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I n S itu T i C Ceramic Particles Locally Reinforced A l‐ S i Matrix Composites Prepared by SHS‐Casting Method from the A l‐ S i‐ T i‐ C System
Author(s) -
Zhang Mengxian,
Huo Yanqiu,
Ma Li,
Huang Bin,
Hu Qiaodan
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12097
Subject(s) - materials science , composite material , ceramic , casting , matrix (chemical analysis) , dissolution , precipitation , ceramic matrix composite , chemical engineering , physics , meteorology , engineering
Using A l‐ S i‐ T i‐ C powder mixtures, T i C grains locally reinforced A l‐ S i matrix composites were produced through self‐propagating high‐temperature synthesis and casting method. The formation of T i C could be ascribed to the dissolution–reaction–precipitation mechanism. The T i C grains were uniformly distributed in the locally reinforced regions of the A l‐ S i matrix. With increasing A l‐ S i content, the size of T i C grains decreased. No pores and cracks were present at the interface between the A l‐ S i matrix and the reinforced regions. Wear resistance of the locally reinforced regions is significantly improved compared with that of the A l‐ S i matrix.