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Improved Strength Recovery of a Titanium Carbide/Silicon Nitride Composite from Thermal Shock Damage via Microwave Heating
Author(s) -
Li Jianbao,
Kong Xiangyang,
Xie Zhipeng,
Huang Yong
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01959.x
Subject(s) - materials science , thermal shock , titanium carbide , microwave , ceramic , silicon carbide , composite number , composite material , sintering , silicon nitride , carbide , titanium , degradation (telecommunications) , microwave heating , shock (circulatory) , metallurgy , medicine , physics , layer (electronics) , quantum mechanics , telecommunications , computer science
Microwave processing has been used to heat treat a TiC/Si 3 N 4 ceramic composite. The strength degradation from thermal shock was substantially recovered. The recovery rate was much greater with microwave heating than with conventional heat treatment at equivalent average temperature. The mechanism of strength recovery was hypothesized to be microwave radiation, which caused selective heating of TiC particles, enhanced the reaction of grain boundaries, and resulted in the sintering of microcracks around TiC particles.