Mechanical properties and thermal shock resistance of ZrB2–SiC ceramic toughened with graphite flake and SiC whiskers
Mechanical properties and thermal shock resistance of ZrB2–SiC ceramic toughened with graphite flake and SiC whiskers
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DOI：
10.1016/j.scriptamat.2009.07.001
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发表时间：
2009-10
影响因子：
6
通讯作者：
Xin Zhang;Zhi Wang;Peitao Hu;W. Han;C. Hong
中科院分区：
文献类型：
--
作者：
Xin Zhang;Zhi Wang;Peitao Hu;W. Han;C. Hong
ZrB2-20vol。含10vol的% SiC陶瓷。%石墨片和10vol。采用热压法制备了% SiC晶须（ZSGS）。研究了ZSGS陶瓷的力学性能和抗热震性能。结果表明，ZSGS陶瓷的抗热震性和断裂韧性得到了显著提高，而抗弯强度略有下降。此外，还对ZSGS陶瓷的导热系数、韧性和强度对其抗热震性能的影响进行了研究和讨论。
ZrB2–20vol.% SiC ceramic containing 10vol.% graphite flake and 10vol.% SiC whiskers (ZSGS) was fabricated by hot pressing. The mechanical properties and thermal shock resistance of the ZSGS ceramic were investigated. The results revealed that thermal shock resistance and fracture toughness were significantly improved, whereas slight degradation was attained in the flexural strength of the ZSGS ceramic. Furthermore, the effect of the thermal conductivity, toughness and strength on the thermal shock resistance of the ZSGS ceramic was also investigated and discussed.