期刊
CERAMICS INTERNATIONAL
卷 48, 期 16, 页码 23258-23265出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.04.310
关键词
Ceramic-matrix composites; Intragranular particles; Mechanical properties; Microstructures; Residual stress
资金
- Program of the Innovation Center of Nuclear Materials for National Defense Industry of China [ICNM-2021-ZH-09]
- Chinese Academy of Sciences [XDA21010202]
- National Natural Science Foundation of China [U1832206, 11505246, 11505247, 11605256]
Al2O3/SiC ceramic composites with different SiC contents were prepared using powder metallurgy method. The effect of second phase particles on the microstructure and mechanical properties of the composites was studied. The results showed that increasing SiC particle content led to a decrease in grain size of the alumina matrix, as well as a significant enhancement in strength and toughness.
Al2O3/SiC ceramic composites with different SiC contents have been prepared by powder metallurgy at 1600 degrees C for 120 min at 30 MPa pressure. The effect of second phase particles on the microstructure and mechanical properties of composites have been studied. The results show that SiC particle has a significant impact on the matrix subjected to residual stress, and on the microstructure of the composites as well. The average grain size of alumina matrix decreases as the SiC particle content increases. Simultaneously, it has been found that the mechanical properties of the material are significantly enhanced in comparison with monolithic Al2O3. The highest strength and toughness are obtained when the SiC content is 15 vol%, and the values are 1237 MPa and 5.68 MPa m1/2, respectively. The mechanisms of strengthening and toughening have been discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据