期刊
ADVANCES IN APPLIED CERAMICS
卷 113, 期 3, 页码 184-188出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743676114Y.0000000142
关键词
MAX ceramics; Pulverisation; Al4C3; Microstructure; Mechanism
资金
- National Natural Science Foundation of China [51172015, 51372015]
- SRF for ROCS
- SRF for SEM
- 'Hongguoyuan' Talent Foundation of Beijing Jiaotong University
The deleterious effect of Al4C3 on the performance of MAX ceramics has not attracted much attention. In the present study, Al4C3 containing Cr2Al(Si) C and SiC/Cr2AlC ceramics have been prepared. It was found that spontaneous pulverisation of the as synthesised samples took place at room temperature after exposure in air and water for various durations. Volume expansion induced by the interaction of Al4C3 with moisture is held responsible for the disintegration of Al4C3 containing MAX ceramics. Preventive measures to avoid the formation of Al4C3 upon preparing MAX ceramics were herein proposed.
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