التفاصيل البيبلوغرافية
| العنوان: |
Enhancement Mechanisms of Hydrogen on Metallothermic Reduction of TiO2 and Anti-oxidation of Titanium Hydride. |
| المؤلفون: |
Wang, Zhuo, Wei, Yonggang, Zheng, Yongxing, Zhou, Shiwei, Li, Bo, Xu, Haoyuan |
| المصدر: |
Metallurgical & Materials Transactions. Part B; Aug2024, Vol. 55 Issue 4, p2901-2915, 15p |
| مصطلحات موضوعية: |
TITANIUM hydride, TITANIUM oxidation, TITANIUM powder, HYDROGEN, SOLID solutions, TITANIUM alloys, OXYGEN |
| مستخلص: |
Titanium is a metal with excellent physical and chemical properties. Although it is highly abundant in the earth's crust, the difficulty of its extraction makes it expensive and restrict its application on a large scale. It has become a world problem to develop a titanium smelting method with low cost and short process. In this research, TiH1.924 powder with a low oxygen content was produced by hydrogen-assisted magnesiothermic reduction at 650 °C for 2 hours. By optimizing the thermodynamic calculation method of Ti–O–H solid solution, the thermodynamic data of Ti–O, Ti–H, and Ti–O–H with different oxygen contents have been calculated. The results showed that the hydrogen in Ti–O–H has destabilizing effect on the oxygen in Ti–O lattice. Therefore, under hydrogen atmosphere, Mg can break the thermodynamic limit of deoxidation of Ti–O solid solution, obtaining a low oxygen content reduction product. In order to further reduce the oxygen content in the product, the mechanism of secondary oxidation of the titanium hydride product was investigated, leading to the conclusion that higher hydrogen content in titanium hydride can obviously enhance its anti-oxidation property. The research can provide theoretical support for the deep reduction of TiO2 using low-cost Mg powder to obtain titanium powder with a low oxygen content. [ABSTRACT FROM AUTHOR] |
|
Copyright of Metallurgical & Materials Transactions. Part B is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Springer Verlag. 
Full Text Finder