Evaluation of Activity Coefficients of Oxygen and Nitrogen in Molten Alloy and Its Dominant Factors Based on Solvation Shell Model

Masanori Suzuki, Yusuke Omi, Masashi Nakamoto, Takeshi Yoshikawa

Tetsu-to-Hagane　2024　Research paper (scientific journal)

Quantification of nitrogen in heavily doped silicon carbide by soft X-ray emission spectroscopy

Sakiko Kawanishi, Takeshi Mitani, Masaru Takakura, Takeshi Yoshikawa, Hiroyuki Shibata

Journal of Crystal Growth　Vol. 619　p. 127345-127345　2023/06　Research paper (scientific journal)

Contribution of Dislocations in SiC Seed Crystals on the Melt-Back Process in SiC Solution Growth

Sakiko Kawanishi, Hiroyuki Shibata, Takeshi Yoshikawa

Materials　Vol. 15　No. 5　2022/03/01　Research paper (scientific journal)

A sessile drop approach for studying 4H-SiC/liquid silicon high-temperature interface reconstructions

Xinming Xing, Takeshi Yoshikawa, Olga Budenkova, Didier Chaussende

Journal of Materials Science　Vol. 57　No. 2　p. 972-982　2022/01　Research paper (scientific journal)

Suppressing solvent compositional change during solution growth of SiC using SiC/C gradient crucible

Sakiko Kawanishi, Hironori Daikoku, Hiroyuki Shibata, Takeshi Yoshikawa

Journal of Crystal Growth　Vol. 576　2021/12/15　Research paper (scientific journal)

Density, surface tension, and viscosity of liquid Si–Cr alloys and influence on temperature and fluid flow during solution growth of SiC

Hironori Daikoku, Sakiko Kawanishi, Takehiko Ishikawa, Takeshi Yoshikawa

Journal of Chemical Thermodynamics　Vol. 160　2021/09　Research paper (scientific journal)

In Situ Interferometry for ppm-Order Solubility Analysis at High Temperatures: A Case Study of Carbon Solubility in Molten Silicon

Sakiko Kawanishi, Takeshi Yoshikawa, Didier Chaussende, Hiroyuki Shibata

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 52　No. 4　p. 2619-2625　2021/08　Research paper (scientific journal)

Effects of High-Concentration Cu and Sn on the Nucleation and Growth Behavior of Graphite on Rare-Earth Compounds During the Solidification of Cast Iron

Kok Long Ng, Hideaki Sasaki, Hisao Kimura, Takeshi Yoshikawa, Masafumi Maeda

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science　Vol. 52　No. 3　p. 902-913　2021/03　Research paper (scientific journal)

Availability of Cr-rich Cr-Si solvent for rapid solution growth of 4H-SiC

Sakiko Kawanishi, Yoichiro Nagamatsu, Takeshi Yoshikawa, Hiroyuki Shibata

Journal of Crystal Growth　Vol. 549　2020/11/01　Research paper (scientific journal)

Measurement and thermodynamics of carbon solubilities in molten Si–Fe, Si–Ni, and Si–Cr–Fe Alloys at 2 073 K

Sakiko Kawanishi, Takeshi Yoshikawa

ISIJ International　Vol. 60　No. 10　p. 2123-2128　2020/10/15　Research paper (scientific journal)

3C-, 4H-, and 6H-SiC crystal habitus and interfacial behaviours in high temperature Si-based solvents

Taka Narumi, Didier Chaussende, Takeshi Yoshikawa

CrystEngComm　Vol. 22　No. 20　p. 3489-3496　2020/05/28　Research paper (scientific journal)

Effect of Calcium on Thermodynamic Properties of Boron in Molten Silicon

Gen Inoue, Takeshi Yoshikawa, Kazuki Morita

High Temperature Materials and Processes　Vol. 22　No. 3-4　p. 221-226　2020　Research paper (scientific journal)

Dynamic changes in interfacial tension between liquid fe alloy and molten slag induced by chemical reactions

Toshihiro Tanaka, Hiroki Goto, Masashi Nakamoto, Masanori Suzuki, Masahito Hanao, Masafumi Zeze, Hideaki Yamamura, Takeshi Yoshikawa

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 106　No. 3　p. 133-142　2020　Research paper (scientific journal)

Molecular dynamics study of the effect of carbon atoms on the surface tension of silicon–carbon alloy

Taka Narumi, Yasushi Shibuta, Takeshi Yoshikawa

ISIJ International　Vol. 60　No. 2　p. 199-204　2020　Research paper (scientific journal)

Thermomigration of molten Cr-Si-C alloy in 4H-SiC at 1873–2273 K

Sakiko Kawanishi, Takeshi Yoshikawa, Hiroyuki Shibata

Journal of Crystal Growth　Vol. 518　p. 73-80　2019/07/15　Research paper (scientific journal)

Passivation of Cu–Sb anodes in H <inf>2</inf> SO <inf>4</inf> −CuSO <inf>4</inf> aqueous solution observed by the channel flow double electrode method and optical microscopy

Yuma Ninomiya, Hideaki Sasaki, Masao Kamiko, Takeshi Yoshikawa, Masafumi Maeda

Electrochimica Acta　Vol. 309　p. 300-310　2019/06/20　Research paper (scientific journal)

Measurement of interaction parameter between titanium and silicon in molten iron using its double saturation with Ti <inf>3</inf> O <inf>5</inf> and Ti <inf>2</inf> O <inf>3</inf> phases

Takeshi Yoshikawa

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 105　No. 3　p. 65-67　2019/03　Research paper (scientific journal)

Measurement and thermodynamics of carbon solubilities of molten Si-Fe, Si-Ni and Si-Fe-Cr alloys at 2073 K

Sakiko Kawanishi, Takeshi YoshiKawa

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 105　No. 3　p. 47-52　2019/03　Research paper (scientific journal)

Direct Observation of Pure Cu and Cu-Ag Anode Passivation in H<inf>2</inf>SO<inf>4</inf>-CuSO<inf>4</inf> Aqueous Solution by Channel Flow Double Electrode and Optical Microscopy

Yuma Ninomiya, Hideaki Sasaki, Takeshi Yoshikawa, Masafumi Maeda

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 50　No. 1　p. 407-415　2019/02/15　Research paper (scientific journal)

Ultrafast synthesis of AFX-Type zeolite with enhanced activity in the selective catalytic reduction of NOx and hydrothermal stability

Anand Chokkalingam, Watcharop Chaikittisilp, Kenta Iyoki, Sye Hoe Keoh, Yutaka Yanaba, Takeshi Yoshikawa, Tetsuro Kusamoto, Tatsuya Okubo, Toru Wakihara

RSC Advances　Vol. 9　No. 29　p. 16790-16796　2019　Research paper (scientific journal)

Temperature-controlled, two-stage synthesis of ZSM-5 zeolite nanoparticles with Al atoms tetrahedrally coordinated in the framework

Makiko Deguchi, Kenta Iyoki, Chokkalingam Anand, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo, Toru Wakihara

Microporous and Mesoporous Materials　Vol. 270　p. 200-203　2018/11/01　Research paper (scientific journal)

Formation of a dense non-crystalline layer on the surface of zeolite Y crystals under high-temperature steaming conditions

Kenta Iyoki, Yudai Yamaguchi, Akira Endo, Yasuo Yonezawa, Tadashi Umeda, Hiroki Yamada, Yutaka Yanaba, Takeshi Yoshikawa, Koji Ohara, Kaname Yoshida, Yukichi Sasaki, Tatsuya Okubo, Toru Wakihara

Microporous and Mesoporous Materials　Vol. 268　p. 77-83　2018/09/15　Research paper (scientific journal)

Molecular dynamics simulation of interfacial growth of SiC from Si–C solution on different growth planes

Taka Narumi, Yasushi Shibuta, Takeshi Yoshikawa

Journal of Crystal Growth　Vol. 494　p. 36-43　2018/07/15　Research paper (scientific journal)

Mechanism of Replicating 4H-SiC Polytype during Solution Growth on Concave Surface

Hironori Daikoku, Sakiko Kawanishi, Takeshi Yoshikawa

Crystal Growth and Design　Vol. 18　No. 7　p. 3820-3826　2018/07/05　Research paper (scientific journal)

In Situ Interface Observation of 3C-SiC Nucleation on Basal Planes of 4H-SiC During Solution Growth of SiC from Molten Fe-Si Alloy

Sakiko Kawanishi, Takeshi Yoshikawa

JOM　Vol. 70　No. 7　p. 1239-1247　2018/07/01　Research paper (scientific journal)

Directing Aluminum Atoms into Energetically Favorable Tetrahedral Sites in a Zeolite Framework by Using Organic Structure-Directing Agents

Koki Muraoka, Watcharop Chaikittisilp, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Angewandte Chemie - International Edition　Vol. 57　No. 14　p. 3742-3746　2018/03/26　Research paper (scientific journal)

Innentitelbild: Directing Aluminum Atoms into Energetically Favorable Tetrahedral Sites in a Zeolite Framework by Using Organic Structure-Directing Agents (Angew. Chem. 14/2018)

Koki Muraoka, Watcharop Chaikittisilp, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Angewandte Chemie　Vol. 130　No. 14　p. 3582-3582　2018/02　Research paper (scientific journal)

Inside Cover: Directing Aluminum Atoms into Energetically Favorable Tetrahedral Sites in a Zeolite Framework by Using Organic Structure-Directing Agents (Angew. Chem. Int. Ed. 14/2018)

Koki Muraoka, Watcharop Chaikittisilp, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Angewandte Chemie International Edition　Vol. 57　No. 14　p. 3522-3522　2018/02　Research paper (scientific journal)

Directing Aluminum Atoms into Energetically Favorable Tetrahedral Sites in a Zeolite Framework by Using Organic Structure-Directing Agents

Koki Muraoka, Watcharop Chaikittisilp, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Angewandte Chemie　Vol. 130　No. 14　p. 3804-3808　2018/02　Research paper (scientific journal)

Heterogeneous nucleation of graphite on rare earth compounds during solidification of cast iron

Kok Long Ng, Hideaki Sasaki, Hisao Kimura, Takeshi Yoshikawa, Masafumi Maeda

ISIJ International　Vol. 58　No. 1　p. 123-131　2018　Research paper (scientific journal)

Solution growth of silicon carbide using unary chromium solvent

Ryo Miyasaka, Sakiko Kawanishi, Taka Narumi, Hideaki Sasaki, Takeshi Yoshikawa, Masafumi Maeda

Journal of Crystal Growth　Vol. 460　p. 23-26　2017/02/15　Research paper (scientific journal)

Ultrafast, OSDA-free synthesis of mordenite zeolite

Jie Zhu, Zhendong Liu, Akira Endo, Yutaka Yanaba, Takeshi Yoshikawa, Toru Wakihara, Tatsuya Okubo

CrystEngComm　Vol. 19　No. 4　p. 632-640　2017　Research paper (scientific journal)

Reassessment of solid solubilities and thermodynamic properties of magnesium and calcium in silicon

Sakiko Kawanishi, Takeshi Yoshikawa

Materials Transactions　Vol. 58　No. 3　p. 450-452　2017　Research paper (international conference proceedings)

Thermodynamic property of tellurium in molten iron measured by the transpiration method

Shun Ueda, Shumpei Suzuki, Takeshi Yoshikawa, Kazuki Morita

ISIJ International　Vol. 57　No. 3　p. 397-403　2017　Research paper (scientific journal)

Organic-free synthesis of zincoaluminosilicate zeolites from homogeneous gels prepared by a co-precipitation method

Natsume Koike, Watcharop Chaikittisilp, Kenta Iyoki, Yutaka Yanaba, Takeshi Yoshikawa, Shanmugam Palani Elangovan, Keiji Itabashi, Tatsuya Okubo

Dalton Transactions　Vol. 46　No. 33　p. 10837-10846　2017　Research paper (scientific journal)

Measurement and thermodynamic analysis of carbon solubility in Si–Cr alloys at SiC saturation

Hironori Daikoku, Sakiko Kawanishi, Takeshi Yoshikawa

Materials Transactions　Vol. 58　No. 10　p. 1434-1438　2017　Research paper (scientific journal)

Thermodynamics and kinetics of direct synthesis of solar grade silicon from metallurgical silicon wafer by liquid phase migration in solid silicon

Sakiko Kawanishi, Kunitoshi Matsunaga, Takeshi Yoshikawa, Kazuki Morita

Materials Transactions　Vol. 58　No. 11　p. 1571-1580　2017　Research paper (scientific journal)

Continuous flow synthesis of ZSM-5 zeolite on the order of seconds

Zhendong Liu, Kotatsu Okabe, Chokkalingam Anand, Yasuo Yonezawa, Jie Zhu, Hiroki Yamada, Akira Endo, Yutaka Yanaba, Takeshi Yoshikawa, Koji Ohara, Tatsuya Okubo, Toru Wakihara

Proceedings of the National Academy of Sciences of the United States of America　Vol. 113　No. 50　p. 14267-14271　2016/12/13　Research paper (scientific journal)

Analysis of the Spiral Step Structure and the Initial Solution Growth Behavior of SiC by Real-Time Observation of the Growth Interface

Sakiko Kawanishi, Masao Kamiko, Takeshi Yoshikawa, Yoshitaka Mitsuda, Kazuki Morita

Crystal Growth and Design　Vol. 16　No. 9　p. 4822-4830　2016/09/07　Research paper (scientific journal)

Ultrafast and continuous flow synthesis of silicoaluminophosphates

Zhendong Liu, Toru Wakihara, Naoki Nomura, Takeshi Matsuo, Chokkalingam Anand, Shanmugam P. Elangovan, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Chemistry of Materials　Vol. 28　No. 13　p. 4840-4847　2016/07/12　Research paper (scientific journal)

Effect of aluminum during the high temperature solution growth of Si-face 4H-SiC

Didier Chaussende, Lucile Parent-Bert, Yun Ji Shin, Thierry Ouisse, Takeshi Yoshikawa

Materials Science Forum　Vol. 858　p. 37-40　2016　Research paper (international conference proceedings)

Fundamental studies on oxidizing roasting of the "bioselenium"

Osamu Otsuka, Yutaka Yanaba, Takeshi Yoshikawa, Mitsuo Yamashita

Materials Transactions　Vol. 57　No. 7　p. 1183-1191　2016　Research paper (scientific journal)

Dynamic changes in interfacial tension between liquid fe alloy and molten slag induced by chemical reactions

Toshihiro Tanaka, Hiroki Goto, Masashi Nakamoto, Masanori Suzuki, Masahito Hanao, Masafumi Zeze, Hideaki Yamamura, Takeshi Yoshikawa

ISIJ International　Vol. 56　No. 6　p. 944-952　2016　Research paper (scientific journal)

Effect of solidification conditions on the silicon growth and refining using Si-Sn melt

Xiaodong Ma, Yun Lei, Takeshi Yoshikawa, Baojun Zhao, Kazuki Morita

Journal of Crystal Growth　Vol. 430　p. 98-102　2015/11/15　Research paper (scientific journal)

Structure-Directing Behaviors of Tetraethylammonium Cations toward Zeolite Beta Revealed by the Evolution of Aluminosilicate Species Formed during the Crystallization Process

Takaaki Ikuno, Watcharop Chaikittisilp, Zhendong Liu, Takayuki Iida, Yutaka Yanaba, Takeshi Yoshikawa, Shinji Kohara, Toru Wakihara, Tatsuya Okubo

Journal of the American Chemical Society　Vol. 137　No. 45　p. 14533-14544　2015/10/28　Research paper (scientific journal)

A top-down methodology for ultrafast tuning of nanosized zeolites

Zhendong Liu, Naoki Nomura, Daisuke Nishioka, Yuusuke Hotta, Takeshi Matsuo, Kazunori Oshima, Yutaka Yanaba, Takeshi Yoshikawa, Koji Ohara, Shinji Kohara, Takahiko Takewaki, Tatsuya Okubo, Toru Wakihara

Chemical Communications　Vol. 51　No. 63　p. 12567-12570　2015/08/14　Research paper (scientific journal)

Highly nanoporous silicas with pore apertures near the boundary between micro- and mesopores through an orthogonal self-assembly approach

Koki Muraoka, Watcharop Chaikittisilp, Yutaka Yanaba, Takeshi Yoshikawa, Tatsuya Okubo

Chemical Communications　Vol. 51　No. 53　p. 10718-10721　2015/07/07　Research paper (scientific journal)

Investigation of selenium recovery on oxidizing roasting of "Bio-Selenium"

Osamu Otsuka, Yutaka Yanaba, Takeshi Yoshikawa, Mitsuo Yamashita

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 79　No. 6　p. 330-337　2015/06/01　Research paper (scientific journal)

Widening synthesis bottlenecks: Realization of ultrafast and continuous-flow synthesis of high-silica zeolite SSZ-13 for NO<inf>x</inf> removal

Zhendong Liu, Toru Wakihara, Kazunori Oshima, Daisuke Nishioka, Yuusuke Hotta, Shanmugam P. Elangovan, Yutaka Yanaba, Takeshi Yoshikawa, Watcharop Chaikittisilp, Takeshi Matsuo, Takahiko Takewaki, Tatsuya Okubo

Angewandte Chemie - International Edition　Vol. 54　No. 19　p. 5683-5687　2015/05/04　Research paper (scientific journal)

Thermodynamics of boron distribution in solvent refining of silicon using ferrosilicon alloys

Leili Tafaghodi Khajavi, Kazuki Morita, Takeshi Yoshikawa, Mansoor Barati

Journal of Alloys and Compounds　Vol. 619　p. 634-638　2015/01/15　Research paper (scientific journal)

Synthesis of (silico)aluminophosphate molecular sieves using an alkanolamine as a novel organic structure-directing agent

Xiying Li, Watcharop Chaikittisilp, Zhendong Liu, Yutaka Yanaba, Takeshi Yoshikawa, Toru Wakihara, Tatsuya Okubo

Chemistry Letters　Vol. 44　No. 10　p. 1300-1302　2015　Research paper (scientific journal)

Thermodynamic evaluation of the C-Cr-Si, C-Ti-Si, and C-Fe-Si systems for rapid solution growth of SiC

Taka Narumi, Sakiko Kawanishi, Takeshi Yoshikawa, Kazuhiko Kusunoki, Kazuhito Kamei, Hironori Daikoku, Hidemitsu Sakamoto

Journal of Crystal Growth　Vol. 408　p. 25-31　2014/12/15　Research paper (scientific journal)

Interfacial phenomena in Fe/Stainless steel-TiC systems and the effect of Mo

Miia Kiviö, Lauri Holappa, Takeshi Yoshikawa, Toshihiro Tanaka

High Temperature Materials and Processes　Vol. 33　No. 6　p. 571-584　2014/12/06　Research paper (scientific journal)

Removal of Boron from Silicon by Solvent Refining Using Ferrosilicon Alloys

Leili Tafaghodi Khajavi, Kazuki Morita, Takeshi Yoshikawa, Mansoor Barati

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 46　No. 2　p. 615-620　2014/11/14　Research paper (scientific journal)

Purification of metallurgical grade Si combining Si-Sn solvent refining with slag treatment

Xiaodong Ma, Takeshi Yoshikawa, Kazuki Morita

Separation and Purification Technology　Vol. 125　p. 264-268　2014/04　Research paper (scientific journal)

Surface reaction of blast furnace slag under hydrothermal conditions

Masaru Hosokawa, Takeshi Yoshikawa, Toshihiro Tanaka, Nakamichi Yamasaki

ISIJ International　Vol. 54　No. 3　p. 548-552　2014　Research paper (scientific journal)

Erratum: Preface 100th volume memorial special issue on steelmaking (Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan (2014) 100:4 (433))

Takeshi Yoshikawa

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 100　No. 5　2014　Research paper (scientific journal)

Dissolution behavior of platinum in Na<inf>2</inf>O-SiO<inf>2</inf>-based slags

Chompunoot Wiraseranee, Takeshi Yoshikawa, Toru H. Okabe, Kazuki Morita

Materials Transactions　Vol. 55　No. 7　p. 1083-1090　2014　Research paper (scientific journal)

Dissolution behavior of MgO and Al<inf>2</inf>O<inf>3</inf>in FeS-Na <inf>2</inf>S fluxes

Yun Lei, Yu Ichi Uchida, Takeshi Yoshikawa, Charles Q. Jia, Kazuki Morita

ISIJ International　Vol. 54　No. 6　p. 1218-1221　2014　Research paper (scientific journal)

Elemental properties of si: Si-Sn solid solution and diffusion coefficient in the Si-Sn melt

Xiaodong Ma, Takeshi Yoshikawa, Kazuki Morita

Science of Advanced Materials　Vol. 6　No. 8　p. 1697-1701　2014　Research paper (scientific journal)

Real-time observation of the interface between SiC and a liquid alloy and its application to the dissolution behavior of SiC at 1573 K

Sakiko Kawanishi, Takeshi Yoshikawa, Kazuki Morita, Kazuhiko Kusunoki, Kazuhito Kamei, Hiroshi Suzuki, Hidemitsu Sakamoto

Journal of Applied Physics　Vol. 114　No. 21　2013/12/07　Research paper (scientific journal)

Interfacial Convection and Its Effect on Material Processing

Piotr R. Scheller, Takeshi Yoshikawa

Treatise on Process Metallurgy　Vol. 2　p. 95-109　2013/11　Part of collection (book)

Removal of boron from silicon-tin solvent by slag treatment

Xiaodong Ma, Takeshi Yoshikawa, Kazuki Morita

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 44　No. 3　p. 528-533　2013/06　Research paper (scientific journal)

Measurement of Thermodynamic Properties of Tellurium in Molten Iron by Transpiration Method

Shumpei Suzuki, Takeshi Yoshikawa, Takayuki Nishi, Kazuki Morita

REWAS 2013 Enabling Materials Resource Sustainability　p. 140-144　2013/02/25　Part of collection (book)

Real-time observation of high temperature interface between SiC substrate and solution during dissolution of SiC

Sakiko Kawanishi, Takeshi Yoshikawa, Kazuki Morita

Materials Science Forum　Vol. 740-742　p. 35-38　2013　Research paper (international conference proceedings)

Investigation on solution growth of SiC by temperature difference method using Fe-Si solvent

Takeshi Yoshikawa, Sakiko Kawanishi, Kazuki Morita, Toshihiro Tanaka

Materials Science Forum　Vol. 740-742　p. 31-34　2013　Research paper (international conference proceedings)

Purification of silicon using the liquid phase migration techniqueunder temperature gradient

Kunitoshi Matsunaga, Takeshi Yoshikawa, Kazuki Morita

Materials Science Forum　Vol. 750　p. 240-243　2013　Research paper (international conference proceedings)

Reductive removal of phosphorus in silicon using CaO-CaF<inf>2</inf> slag

Hiroaki Kawamura, Yutaka Yanaba, Takeshi Yoshikawa, Kazuki Morita

TMS Annual Meeting　Vol. 750　p. 229-236　2013　Research paper (international conference proceedings)

Solar grade silicon purification using liquid phase migration technique

Kunitoshi Matsunaga, Takeshi Yoshikawa, Kazuki Morita

TMS Annual Meeting　p. 193-200　2013　Research paper (international conference proceedings)

Activity coefficient of Cu in the Fe-C-Cu-S alloy saturated with graphite at 1 473 K

Yun Lei, Takeshi Yoshikawa, Kazuki Morita

ISIJ International　Vol. 53　No. 3　p. 538-540　2013　Research paper (scientific journal)

Si growth by directional solidification of Si-Sn alloys to produce solar-grade Si

Xiaodong Ma, Takeshi Yoshikawa, Kazuki Morita

Journal of Crystal Growth　Vol. 377　p. 192-196　2013　Research paper (scientific journal)

Effect of Al<inf>2</inf>O<inf>3</inf>, MgO and CuO<inf>x</inf> on the dissolution behavior of rhodium in the Na<inf>2</inf>O-SiO<inf>2</inf> slags

C. Wiraseraneea, T. Yoshikawa, T. H. Okabe, K. Morita

Journal of Mining and Metallurgy, Section B: Metallurgy　Vol. 49　No. 2　p. 131-138　2013　Research paper (scientific journal)

Thermodynamic properties of the FeS-MnS-CuS<inf>0.5</inf> ternary system at 1 473 K

Yun Lei, Takeshi Yoshikawa, Shengping He, Kazuki Morita

ISIJ International　Vol. 53　No. 6　p. 966-972　2013　Research paper (scientific journal)

Solution growth behavior of SiC by a temperature difference method using Fe-Si solvent

Sakiko Kawanishi, Takeshi Yoshikawa, Kazuki Morita, Nobuhiro Okada, Kazuhiko Kusunoki, Kazuhito Kamei

Journal of Crystal Growth　Vol. 381　p. 121-126　2013　Research paper (scientific journal)

Surface tensions of Fe-(30-40 mol%) Si-C Alloys at 1523-1723K

Takeshi Yoshikawa

Materials Transactions　Vol. 54　No. 10　p. 1968-1974　2013　Research paper (scientific journal)

Effect of Fe addition on the activity coefficient of Si in Cu-Fe-Si melt at 1 623 K

Yuichi Kato, Takeshi Yoshikawa, Yutaka Kagawa, Kazuki Morita

ISIJ International　Vol. 53　No. 8　p. 1320-1324　2013　Research paper (scientific journal)

Interfacial phenomena in Fe-TiC systems and the effect of Cr and Ni

Miia Kiviö, Lauri Holappa, Takeshi Yoshikawa, Toshihiro Tanaka

High Temperature Materials and Processes　Vol. 31　No. 4-5　p. 645-656　2012/10　Research paper (scientific journal)

The rate of boron removal from molten silicon by CaO-SiO<inf>2</inf> slag and Cl<inf>2</inf> treatment

Hiroshi Nishimoto, Youngjo Kang, Takeshi Yoshikawa, Kazuki Morita

High Temperature Materials and Processes　Vol. 31　No. 4-5　p. 471-477　2012/10　Research paper (scientific journal)

An evolving method for solar-grade silicon production: Solvent refining

Takeshi Yoshikawa, Kazuki Morita

JOM　Vol. 64　No. 8　p. 946-951　2012/08　Research paper (scientific journal)

Phase relations and thermodynamic property of boron in the silicon-tin melt at 1673 K

Xiaodong Ma, Takeshi Yoshikawa, Kazuki Morita

Journal of Alloys and Compounds　Vol. 529　p. 12-16　2012/07/15　Research paper (scientific journal)

The effect of Fe addition on the activity of Si in liquid Cu-Si alloys

Yuichi Kato, Takeshi Yoshikawa, Kazuki Morita

TMS Annual Meeting　p. 87-94　2012　Research paper (international conference proceedings)

Effects of porous surface layer on lubrication evaluated by ring compression friction test

Yukiya Oyachi, Hiroshi Utsunomiya, Tetsuo Sakai, Takeshi Yoshikawa, Toshihiro Tanaka

ISIJ International　Vol. 52　No. 5　p. 858-862　2012　Research paper (scientific journal)

Thermodynamic properties of the MnS-CuS<inf>0.5</inf> binary system

Yun Lei, Takeshi Yoshikawa, Charles Q. Jia, Kazuki Morita

ISIJ International　Vol. 52　No. 7　p. 1206-1210　2012　Research paper (scientific journal)

Erratum: Effects of porous surface layer on lubrication evaluated by ring compression friction test (ISIJ International (2012) 52:5 (858-862))

Yukiya Oyachi, Hiroshi Utsunomiya, Tetsuo Sakai, Takeshi Yoshikawa, Toshihiro Tanaka

ISIJ International　Vol. 52　No. 6　2012　Research paper (scientific journal)

Fabrication of porous glass supporting silver ultrafine particles after hydrothermal treatment and microwave heating

Takeshi Yoshikawa, Kei Kasamatsu, Takafumi Kanata, Nobumitsu Hirai, Toshihiro Tanaka, Kohsuke Mori

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 75　No. 12　p. 665-670　2011/12　Research paper (scientific journal)

Reduction behavior of SiCl <inf>4</inf> during its aluminothermic reduction

Tadatoshi Kawabe, Takeshi Yoshikawa, Kunio Saegusa, Kazuki Morita

High Temperature Materials and Processes　Vol. 30　No. 4　p. 379-385　2011/08　Research paper (scientific journal)

Thermodynamic evaluation of new metallurgical refining processes for SOG-silicon production

Kazuki Morita, Takeshi Yoshikawa

Transactions of Nonferrous Metals Society of China (English Edition)　Vol. 21　No. 3　p. 685-690　2011/03　Research paper (scientific journal)

Effect of solidification conditions on Si growth from Si-Cu melts

Yosuke Ohshima, Takeshi Yoshikawa, Kazuki Morita

TMS Annual Meeting　Vol. 1　p. 677-684　2011　Research paper (international conference proceedings)

Wetting behaviors of steels containing Al and Al-S on solid CaO

Takeshi Yoshikawa, Kazuya Motosugi, Toshihiro Tanaka, Mitsuru Ueda

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 97　No. 7　p. 361-368　2011　Research paper (scientific journal)

Solution growth of silicon carbide using Fe-Si solvent

Takeshi Yoshikawa, Sakiko Kawanishi, Toshihiro Tanaka

Japanese Journal of Applied Physics　Vol. 49　No. 5 PART 1　p. 0513021-0513026　2010/05　Research paper (scientific journal)

Thermodynamics of impurity elements in solid silicon

Takeshi Yoshikawa, Kazuki Morita, Sakiko Kawanishi, Toshihiro Tanaka

Journal of Alloys and Compounds　Vol. 490　No. 1-2　p. 31-41　2010/02/04　Research paper (scientific journal)

Equilibrium phase relationship between SiC and a liquid phase in the Fe-Si-C system at 1523-1723 K

Sakiko Kawanishi, Takeshi Yoshikawa, Toshihiro Tanaka

Materials Transactions　Vol. 50　No. 4　p. 806-813　2009/04　Research paper (scientific journal)

Refining of silicon during its solidification from a Si-Al melt

Takeshi Yoshikawa, Kazuki Morita

Journal of Crystal Growth　Vol. 311　No. 3　p. 776-779　2009/01/15　Research paper (scientific journal)

Fundamental study for solvent growth of silicon carbide utilizing Fe-Si melt

T. Yoshikawa, S. Kawanishi, T. Tanaka

Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

Hydrothermal metallurgy for recycling of slag and glass

Toshihiro Tanaka, Takeshi Yoshikawa, Nobumitsu Hirai, Shigeru Katsuyama

Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

A fundamental approach for the measurement of solid-liquid interfacial energy

Atsushi Fukuda, Takeshi Yoshikawa, Toshihiro Tanaka

Journal of Physics: Conference Series　Vol. 165　2009　Research paper (international conference proceedings)

Trial for recycling of slag by applying hydrothermal reactions

Toshihiro Tanaka, Takeshi Yoshikawa, Nobumitsu Hirai

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 95　No. 6　p. 353-359　2009　Research paper (scientific journal)

Decomposition of Wüstite in scale layer on iron substrate and fabrication of surface porous layer by reduction of the decomposed layer

Nobuyuki Takahira, Takeshi Yoshikawa, Toshihiro Tanaka

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 72　No. 3　p. 254-260　2008/03　Research paper (scientific journal)

Fabrication of low temperature foaming glass materials using hydrothermal treatment

Takeshi Yoshikawa, Shinsuke Sato, Toshihiro Tanaka

ISIJ International　Vol. 48　No. 2　p. 130-133　2008　Research paper (scientific journal)

Application of hydrothermal treatment on BF slag and waste glass for preparing lubricant materials in high strain rolling for ultrafine-grained steel production

Shinsuke Sato, Takeshi Yoshikawa, Masashi Nakamoto, Toshihiro Tanaka, Jiro Ikeda

ISIJ International　Vol. 48　No. 2　p. 245-250　2008　Research paper (scientific journal)

MgO effect on hydrothermal solidification of blast furnace slag

Takeshi Yoshikawa, Masaru Hosokawa, Toshihiro Tanaka

ISIJ International　Vol. 48　No. 5　p. 557-562　2008　Research paper (scientific journal)

Preparation of porous ceramics by the hydrothermal reaction of blast furnace slag for use in a water-retentive material

Takeshi Yoshikawa, Shota Hirano, Nobumitsu Hirai, Toshihiro Tanaka

ISIJ International　Vol. 48　No. 9　p. 1322-1324　2008　Research paper (scientific journal)

Investigation on Mn distribution between Ti<inf>2</inf>O<inf>3</inf> and austenite-iron

Yoshihiko Oya, Takeshi Yoshikawa, Kazuki Morita

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　Vol. 93　No. 12　p. 769-774　2007/12　Research paper (scientific journal)

Unusual wetting of liquid bismuth on a surface-porous copper substrate fabricated by oxidation-reduction process

Nobuyuki Takahira, Takeshi Yoshikawa, Toshihiro Tanaka, Lauri Holappa

Materials Transactions　Vol. 48　No. 12　p. 3126-3131　2007/12　Research paper (international conference proceedings)

Wettability of liquid in and Bi on flat and porous solid iron substrate

Nobuyuki Takahira, Takeshi Yoshikawa, Toshihiro Tanaka, Lauri Holappa

Materials Transactions　Vol. 48　No. 10　p. 2708-2711　2007/10　Research paper (international conference proceedings)

Growth of β-FeSi<inf>2</inf> layers on Si(100) substrates by exchange reaction between Si and molten salts

Tsuyoshi Yoneyama, Takeshi Yoshikawa, Kazuki Morita

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　Vol. 46　No. 8 A　p. 5233-5237　2007/08/06　Research paper (scientific journal)

Influence of alloying elements on the thermodynamic properties of titanium in molten steel

Takeshi Yoshikawa, Kazuki Morita

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 38　No. 4　p. 671-680　2007/08　Research paper (international conference proceedings)

Fabrication of low temperature foaming glass materials using hydrothermal treatment

Takeshi Yoshikawa, Shinsuke Sato, Toshihiro Tanaka

Materials Science Forum　Vol. 561-565　No. PART 3　p. 1673-1676　2007　Research paper (international conference proceedings)

Unusual wetting behavior of liquid metals on porous layer formed at surface of iron substrate prepared by oxidation-reduction process

Nobuyuki Takahira, Takeshi Yoshikawa, Toshihiro Tanaka

Materials Science Forum　Vol. 561-565　No. PART 3　p. 1699-1701　2007　Research paper (international conference proceedings)

Continuous solidification of Si from Si-AI melt under the induction heating

Takeshi Yoshikawa, Kazuki Morita

ISIJ International　Vol. 47　No. 4　p. 582-584　2007　Research paper (scientific journal)

Activity measurements of Al and Cu in Si-Al-Cu melt at 1273 and 1373 K by the equilibration with molten Pb

Takeshi Yoshikawa, Kazuki Morita

Journal of Alloys and Compounds　Vol. 420　No. 1-2　p. 136-144　2006/08/31　Research paper (scientific journal)

Influence of an alloying element (Cr, Ni, Mn, Mo and Cu) on the thermodynamic properties of titanium in molten iron allloys

Takeshi Yoshikawa, Kazuki Morita

2006 TMS Fall Extraction and Processing Division: Sohn International Symposium　Vol. 2　p. 199-210　2006　Research paper (international conference proceedings)

Boron removal in the solidification refining of Si with Si-Al melt

Takeshi Yoshikawa, Kazuki Morita

2006 TMS Fall Extraction and Processing Division: Sohn International Symposium　Vol. 1　p. 673-684　2006　Research paper (international conference proceedings)

Boron removal by Titanium addition in solidification refining of silicon with Si-Al melt

Takeshi Yoshikawa, Kentaro Arimura, Kazuki Morita

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 36　No. 6　p. 837-842　2005/12　Research paper (scientific journal)

Removal of B from Si by solidification refining with Si-Al melts

Takeshi Yoshikawa, Kazuki Morita

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 36　No. 6　p. 731-736　2005/12　Research paper (scientific journal)

Thermodynamic property of B in molten Si and phase relations in the Si-Al-B system

Takeshi Yoshikawa, Kazuki Morita

Materials Transactions　Vol. 46　No. 6　p. 1335-1340　2005/06　Research paper (scientific journal)

Thermodynamics of solid silicon equilibrated with Si-Al-Cu liquid alloys

Takeshi Yoshikawa, Kazuki Morita

Journal of Physics and Chemistry of Solids　Vol. 66　No. 2-4　p. 261-265　2005/02　Research paper (international conference proceedings)

Thermodynamics on the solidification refining of silicon with Si-Al melts

Takeshi Yoshikawa, Kazuki Morita

TMS Annual Meeting　p. 549-558　2005　Research paper (international conference proceedings)

Refining of Si by the solidification of Si-Al melt with electromagnetic force

Takeshi Yoshikawa, Kazuki Morita

ISIJ International　Vol. 45　No. 7　p. 967-971　2005　Research paper (scientific journal)

Thermodynamic properties of the SiO <inf>2</inf>-GeO <inf>2</inf> and Pt-rich Pt-Ge systems at 1623 and 1723 K

Takeshi Yoshikawa, Indra Astuti, Hiroshi Takahashi, Kazuki Morita

Materials Transactions　Vol. 45　No. 6　p. 1847-1851　2004/06　Research paper (scientific journal)

Thermodynamics of titanium and boron in molten aluminum

Takeshi Yoshikawa, Kazuki Morita

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　Vol. 68　No. 6　p. 390-394　2004/06　Research paper (scientific journal)

Thermodynamic study of the effect of calcium on removal of phosphorus from silicon by acid leaching treatment

Tomohito Shimpo, Takeshi Yoshikawa, Kazuki Morita

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　Vol. 35　No. 2　p. 277-284　2004/04　Research paper (scientific journal)

Development of a Technology for Silicon Production by Recycling Wasted Optical Fiber

Masaru Ogura, Indra Astuti, Takeshi Yoshikawa, Kazuki Morita, Hiroshi Takahashi

Industrial and Engineering Chemistry Research　Vol. 43　No. 8　p. 1890-1893　2004/04　Research paper (scientific journal)

Effect of Calcium on Thermodynamic Properties of Boron in Molten Silicon

Inoue, G., Yoshikawa, T., Morita, K.

High Temperature Materials and Processes　Vol. 22　No. 3-4　2004　Research paper (scientific journal)

Removal of phosphorus by the solidification refining with Si-Al melts

Takeshi Yoshikawa, Kazuki Morita

Science and Technology of Advanced Materials　Vol. 4　No. 6　p. 531-537　2003/11　Research paper (scientific journal)

Solid solubilities and thermodynamic properties of aluminum in solid silicon

Takeshi Yoshikawa, Kazuki Morita

Journal of the Electrochemical Society　Vol. 150　No. 8　2003/08　Research paper (scientific journal)

Carbothermic reduction of MgO by microwave irradiation

Takeshi Yoshikawa, Kazuki Morita

Materials Transactions　Vol. 44　No. 4　p. 722-726　2003/04　Research paper (scientific journal)