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Thermal Shock Resistance of Laminated ZrB 2 –SiC Ceramic Evaluated by Indentation Technique
Author(s) -
Zhou Peng,
Wang Zhi,
Fan Youhua,
Hu Ping,
Zhang Xinghong,
Han Wenbo
Publication year - 2015
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.13697
Subject(s) - thermal shock , materials science , ceramic , indentation , composite material , quenching (fluorescence) , residual stress , shock (circulatory) , medicine , physics , quantum mechanics , fluorescence
In this work, the thermal shock behavior of laminated ZrB 2 –SiC ceramic has been evaluated using indentation‐quench method based on propagation of Vickers cracks and compared with the monolithic ZrB 2 –SiC ceramic. The results showed that the laminated ZrB 2 –SiC ceramic exhibited better resistance to crack propagation and thermal shock under water quenching condition, and the critical temperature difference (Δ T c ) of laminated ZrB 2 –SiC ceramic (Δ T c ≈ 590°C) was much higher than that of monolithic ceramic (Δ T c ≈ 290°C). The significant improvement in thermal shock resistance was attributed to residual stresses enhancing the resistance to crack growth during thermal shock loading.