Electrolytic production of Ti-Ge intermetallics from oxides in molten CaCl 2-NaCl

Yin-shuai Wang, Xing-li Zhou, Xiong-gang Lu, Shang-shu Li, Kai Zheng, Shu-juan Wang, Qian Xu, Zhongfu Zhou

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7 Citations (SciVal)

Abstract

Titanium germanium intermetallics (TixGey) were directly prepared from titanium oxide (TiO2) and germanium oxide (GeO2) powders mixture by using an electrodeoxidation process. The electrochemical experiment was carried out in a molten flux CaCl2-NaCl at 800 °C with a potential of 3.0 V. The results show that monolithic germanide Ti5Ge3 intermetallic can be directly produced from TiO2-GeO2 or CaTiO3-GeO2 precursors (both molar ratios are 5:3), and the obtained Ti5Ge3 powders exhibit homogenous particle structure. In addition, the phase composition of the final product can be dramatically affected by the initial molar ratio of TiO2 to GeO2. The reaction mechanism of the electrodeoxidation process was discussed based on the experimental results. It is suggested that the electrodeoxidation process is an environmentally friendly method for the preparation of Ti-Ge intermetallics
Original languageEnglish
Pages (from-to)2351-2359
Number of pages9
JournalTransactions of Nonferrous Metals Society of China
Volume28
Issue number11
DOIs
Publication statusPublished - 01 Nov 2018

Keywords

  • Ti-Ge intermetallics
  • electrodeoxidation
  • molten salt
  • oxides

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