TY - JOUR
T1 - Electrochemical Deoxidation of Titanium and Its Alloy Using Molten Magnesium Chloride
AU - Taninouchi, Yu ki
AU - Hamanaka, Yuki
AU - Okabe, Toru H.
N1 - Funding Information:
The authors are grateful to Dr. Tetsushi Deura and Messrs. Daisuke Matsuwaka and Fumiaki Kudo at Kobe Steel, Ltd., for their sample analysis. The authors thank Messrs. Susumu Kosemura, Masanori Yamaguchi, Yuichi Ono, and Yosuke Inoue of Toho Titanium Co., Ltd. for the valuable suggestions and useful information that they provided. The authors are also grateful to Dr. Katsuhiro Nose and Mr. Hisao Kimura at the University of Tokyo for their valuable suggestions and technical assistance. This work was financially supported by the Japan Society for the Promotion of Science (JSPS), through a Funding Program for Next Generation World-Leading Researchers (NEXT Program, Project No. GR019) and a Grant-in-Aid for Scientific Research (S) (KAKENHI Grant No. 26220910).
Publisher Copyright:
© 2016, The Minerals, Metals & Materials Society and ASM International.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Oxygen was directly removed from pure titanium and a Ti-6Al-4V alloy by electrolysis in molten MgCl2 at 1173 K (900 °C), where the metal being refined was the cathode and a graphite rod was used as the anode. By applying a voltage of approximately 3 V between the electrodes, commercially pure titanium, containing 1200 mass ppm oxygen, and the Ti-6Al-4V alloy, containing 1400 mass ppm oxygen, were deoxidized to 500 mass ppm or less. Under certain conditions, extra-low-oxygen titanium (as low as 80 mass ppm oxygen) was obtained using this electrochemical technique. The results obtained in this study indicate that the electrochemical deoxidation of titanium in molten MgCl2 is feasible and applicable not only to the refinement of primary metals, but also for upgrading machined titanium products and recycling metal scraps.
AB - Oxygen was directly removed from pure titanium and a Ti-6Al-4V alloy by electrolysis in molten MgCl2 at 1173 K (900 °C), where the metal being refined was the cathode and a graphite rod was used as the anode. By applying a voltage of approximately 3 V between the electrodes, commercially pure titanium, containing 1200 mass ppm oxygen, and the Ti-6Al-4V alloy, containing 1400 mass ppm oxygen, were deoxidized to 500 mass ppm or less. Under certain conditions, extra-low-oxygen titanium (as low as 80 mass ppm oxygen) was obtained using this electrochemical technique. The results obtained in this study indicate that the electrochemical deoxidation of titanium in molten MgCl2 is feasible and applicable not only to the refinement of primary metals, but also for upgrading machined titanium products and recycling metal scraps.
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U2 - 10.1007/s11663-016-0792-9
DO - 10.1007/s11663-016-0792-9
M3 - Article
AN - SCOPUS:84984622104
VL - 47
SP - 3394
EP - 3404
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
SN - 1073-5615
IS - 6
ER -