Reactions between Ti and Ti₃SiC₂ in temperature range of 1 273-1 573 K

来源期刊：中国有色金属学报(英文版)2006年第6期

论文作者：李保松 周延春

文章页码：1281 - 1288

Key words：Ti₃SiC₂; Ti; high-temperature reaction

Abstract: The reactions of Ti₃SiC₂ and Ti in the temperature range of 1 273-1 573 K under a pressure of 20 MPa were investigated. The results confirm that Ti reacts with Ti₃SiC₂ above 1 273 K and new phases like TiC_x, Ti₅Si₃ and TiSi₂ are identified. The reactions are closely related to temperature and content of Ti₃SiC₂ in Ti. During the reaction process, Ti₃SiC₂ decomposes in two different modes. The first is caused by the de-intercalation of Si from it and the TiC_x is formed by the remained titanium and carbon; the second is that the carbon is separated from the Ti₃SiC₂ and reacts with titanium furthermore. The diffusing of silicon is believed to be the determinant ingredient of the reaction.

基金信息：the National Outstanding Young Scientist Foundation
the National Natural Science Foundation of China