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Influence of hot pressing temperature and SiC content on the microstructure and mechanical properties of ZrB2-SiC

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of hot pressing temperature and SiC content on the microstructure and mechanical properties of ZrB2-SiC ceramics was investigated. ZrB2 containing 20 volume percent SiC were prepared by hot pressing at 1850, 1900 and 1950°C for 60 min. Fully dense ceramic was obtained after hot pressing at temperature of 1950°C. In addition, the materials with SiC content of 0, 10vol.%, 15 vol.%, 20 vol.% and 30 vol.% hot pressed at 1950°C were also investigated. Results showed that the grain size of the ZrB2 significantly reduced on adding 10vol.% SiC and then decreased slightly with further increasing SiC content, whereas the grain size of SiC exhibited a opposite trend. The flexural strength of ZrB2-SiC ceramics remarkedly increased on adding 10vol.% SiC due to the significant decrease of ZrB2 particle size and then slightly increased with increasing SiC content up to 20vol.%. However, further increasing SiC content led to a reduction of the flexural strength.

Original languageEnglish
Title of host publicationHigh-Performance Ceramics VI
PublisherTrans Tech Publications Ltd
Pages189-192
Number of pages4
ISBN (Print)0878492747, 9780878492749
DOIs
StatePublished - 2010
Event6th China International Conference on High-Performance Ceramics, CICC-6 - Harbin, China
Duration: 16 Aug 200919 Aug 2009

Publication series

NameKey Engineering Materials
Volume434-435
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference6th China International Conference on High-Performance Ceramics, CICC-6
Country/TerritoryChina
CityHarbin
Period16/08/0919/08/09

Keywords

  • Mechanical properties
  • Microstructure
  • SiC
  • ZrB

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