The behavior and effect of rare earth CeO2 on in-situ TiC/Al composite

Autor: Liuhe Li, Youming Liu, Wenyi Li, Qiulong Chen, Bofan Xu, Xun Cai
Rok vydání: 2004
Předmět:
Zdroj: Metallurgical and Materials Transactions A. 35:2511-2515
ISSN: 1543-1940
1073-5623
DOI: 10.1007/s11661-006-0231-7
Popis: Rare earth CeO2 was investigated as an additive for in-situ preparation of TiC/Al composites using XD (exothermal dispersion) + casting technology. Experiment results showed that an optimum CeO2 addition of 0.5 wt pct promotes the generation and refinement of TiC particles, prevents the formation of Al3Ti, increases the wettability between the TiC ceramic particles and the Al matrix, and improves the mechanical properties of composite. A corresponding thermodynamic model was proposed for the mechanism.
Databáze: OpenAIRE