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Effect of Thermal Treatment on Microstructure and Fracture Strength of SiC Coatings
Author(s) -
Zhang Huixing,
Xiao Ping
Publication year - 2013
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/jace.12148
Subject(s) - materials science , weibull modulus , microstructure , composite material , thermal shock , weibull distribution , flexural strength , isotropy , fracture (geology) , thermal treatment , modulus , statistics , physics , mathematics , quantum mechanics
SiC coatings in tri‐structural isotropic‐coated ( TRISO ) particles were thermally treated at 2000°C for 1 h in argon atmosphere. The fracture strength of the SiC decreased while change in the Weibull modulus of the failure strength is more complex after the thermal treatment. The variation in both fracture strength and Weibull modulus can be explained by the formation of the pores in SiC due to thermal treatments, as annihilation of the stacking faults and diffusion of intrinsic defects lead to the pore formation.