Paper Title:
Properties of Carbide-Metal Cermets Prepared from Composite Powders by Direct Reduction and Carburization Process
| Periodical | Key Engineering Materials (Volumes 368 - 372) |
|---|---|
| Main Theme | High-Performance Ceramics V |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 1099-1103 |
| DOI | 10.4028/www.scientific.net/KEM.368-372.1099 |
| Citation | Li Yan et al., 2008, Key Engineering Materials, 368-372, 1099 |
| Online since | February, 2008 |
| Authors | Li Yan, Gang Qin Shao, Z. Xiong, Xiao Liang Shi, Xing Long Duan, T.G. Wang |
| Keywords | Carbide-Metal Cermet, Composite Powders, Direct Carburization, Direct Reduction |
| Price | US$ 28,- |
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Abstract
The transition-metal carbide cemented by metal has excellent combined properties. In this study, cermets were prepared by vacuum sintering from carbide-metal composite powders. The transition- metal oxides (Cr2O3, MoO3, V2O5, Nb2O5 and TiO2), cementing-metal oxides (Co3O4 and NiO), and carbon black were used as raw materials to pre-synthesize composite powders such as Cr3C2-Co, Mo2C-Co, VC-Co, NbC-Co and TiC-Ni, by a direct reduction and carburization process in vacuum. Results show that the participation of Co3O4 and NiO as well as the vacuum circumstance were greatly propitious to the carburization of transition-metal oxides into carbides. The carbothermal condition was greatly improved by the direct reduction and carburization process.
