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个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:材料科学与工程学院
学科:航空宇航制造工程. 飞行器设计. 材料学. 航空航天力学与工程
办公地点:综合实验1号楼201B室
联系方式:gdshi@dlut.edu.cn
电子邮箱:gdshi@dlut.edu.cn
The thermal shock resistance of the ZrB2-SiC-ZrC ceramic
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论文类型:期刊论文
发表时间:2011-06-01
发表刊物:MATERIALS & DESIGN
收录刊物:SCIE、EI
卷号:32
期号:6
页面范围:3499-3503
ISSN号:0261-3069
摘要:In the present work, the thermal shock resistance of the ZrB2-SiC-ZrC ceramic was estimated by the water quenching method and the flexural strength of the quenched specimen was measured. The measured critical temperature difference of the ZrB2-SiC-ZrC ceramic was significantly greater than that of the ZrB2-15 vol.% SiC ceramic. The improvement in thermal shock resistance was attributed to its higher fracture toughness (6.7 MPa m(1/2)) and lower flexural strength (526 MPa) relative to the ZrB2-15 vol.% SiC ceramic (4.1 MPa m(1/2) and 795 MPa) based on Griffith fracture criterion. Furthermore, the temperature and thermal stress distributions in the specimen during instantaneous water quenching were simulated by Finite element analysis. (C) 2011 Elsevier Ltd. All rights reserved.