|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Direct Production of Ti-29Nb-13Ta-4.6Zr Biomedical Alloy from Oxide Mixture in Molten CaCl2
| Title: | Direct Production of Ti-29Nb-13Ta-4.6Zr Biomedical Alloy from Oxide Mixture in Molten CaCl2 |
| Authors: | Osaki, Shogo Browse this author | | Sakai, Hiroshi Browse this author | | Suzuki, Ryosuke O. Browse this author →KAKEN DB |
| Keywords: | calcium compounds | | electrolysis | | heat treatment | | niobium alloys | | powder technology | | sintering | | solid solutions | | tantalum alloys | | titanium alloys | | zirconium alloys |
| Issue Date: | 3-Jun-2010 |
| Publisher: | The Electrochemical Society |
| Journal Title: | Journal of the Electrochemical Society |
| Volume: | 157 |
| Issue: | 8 |
| Start Page: | E117 |
| End Page: | E121 |
| Publisher DOI: | 10.1149/1.3435302 |
| Abstract: | A process based on the principle of the Ono-Suzuki process involving electrolysis and the calciothermic coreduction of an oxide mixture consisting of TiO2, Nb2O5, Ta2O5, and ZrO2 for producing Ti-29Nb-23Ta-4.6Zr (TNTZ) was proposed. Ca was produced by the electrolysis of CaO in molten CaCl2 by applying a voltage of 3.2 V between a carbon anode and Ti cathode at 1173 K. The residual oxygen concentration in the obtained powder decreased monotonically with an increase in the supplied electric charge. An oxygen concentration of 0.19 mass % was attained by supplying the electrical charge around 3 times larger than that necessary to generate the stoichiometrically required amount of Ca. This sample consisted of a Ti-based body-centered cubic solid solution and a small amount of hexagonal close-packed (hcp) solid solution. The inhomogeneity in the composition was suppressed to a relatively low level so that it could be easily improved by heat-treatment. After sintering at 1300 K for 54 ks, for example, the Ti- and Zr-rich hcp phase disappeared and the composition achieved the targeted value. The results of this study indicate that the OS process can be applied to directly produce TNTZ alloy from an oxide mixture. |
| Rights: | © The Electrochemical Society, Inc. 2010. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc., 157(8), pp. E117-E121 (2010) |
| Type: | article |
| URI: | http://hdl.handle.net/2115/43282 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 鈴木 亮輔
|
