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- Title
Electrolytic Production of TiSi/TiC Composites by Solid Oxide Membrane Technology.
- Authors
Zheng, Kai; Zou, Xingli; Xie, Xueliang; Lu, Changyuan; Chen, Chaoyi; Xu, Qian; Lu, Xionggang
- Abstract
This paper investigated the electrolytic production of TiSi/TiC composites from TiO/SiO/C in molten CaCl. The solid-oxide oxygen-ion-conducting membrane tube filled with carbon-saturated liquid tin was served as the anode, and the pressed spherical TiO/SiO/C pellet was used as the cathode. The electrochemical reduction process was carried out at 1273 K and 3.8 V. The characteristics of the obtained cathode products and the reaction mechanism of the electroreduction process were studied by a series of time-dependent electroreduction experiments. It was found that the electroreduction process generally proceeds through the following steps: TiO/SiO/C → TiO, CaTiO, CaSiO, SiC → TiSi, TiC. The morphology observation and the elemental distribution analysis indicate that the reaction routes for TiSi and TiC products are independent during the electroreduction process.
- Subjects
SILICIDES; YTTRIA stabilized zirconium oxide; CREEP (Materials); FRACTURE mechanics; ARTIFICIAL membranes; SCANNING electron microscopy
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2018, Vol 70, Issue 2, p138
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2693-z