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Si3N4/BN composites were fabricated by spark plasma sintering (SPS) through traditional powder mixing process and by a chemical route to Si3N4/BN composite powder, respectively. The SPS-processed Si3N4/BN composites maintain a considerably high bending strength, exhibiting some gradual decrease though with increasing BN content. Given the BN content, the bending strength is enhanced for the composites prepared by powder mixing relative to the chemical route counterparts. Differences in the alpha -＞beta phase transformation of Si3N4 and grain growth during the SPS process play a key role in the variation of strength. Regardless of the preparation method, the Si3N4/BN composites with a BN content up to 30 vol.% can be well machined with WC tools. (C) 2007 Elsevier B.V. All rights reserved.
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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN： 0921-5093
Year： 2008
Volume： 483-84
Page： 207-210
6 . 4 0 0
JCR@2022
ESI Discipline： MATERIALS SCIENCE;
JCR Journal Grade：2
Cited Count：
WoS CC Cited Count： 30
SCOPUS Cited Count： 43
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 8
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