Paper Title:
The Research of SiC and Si3N4 Whiskers Reinforced Si3N4 Composites to Improve its Wear and Mechanical Properties
  Abstract

To improve the wear and mechanical properties, SiC and Si3N4 whiskers reinforced Si3N4 composites were sintered by hot press sintering technique at 1800 and 1900°C for 1 h. The Friction and wear behaviors of Si3N4-SiC whisker reinforced Si3N4 composites have been studied by using a reciprocating sliding apparatus. The results show that Si3N4-SiC whisker can greatly improve the hardness, fracture toughness and wear resistance of Si3N4. Lower sintering temperature can make both the grain dimension and interface area of the whiskers with the matrix decrease, resulting in relatively uneasy fracture of the whiskers. This uneasy fracture of the whiskers is the main reason for improvement in fracture toughness, and thus, the decrease in wear rate compared with those of the samples sintered at higher temperature and Si3N4 material.

  Info
Periodical
Key Engineering Materials (Volumes 474-476)
Edited by
Garry Zhu
Pages
1881-1886
DOI
10.4028/www.scientific.net/KEM.474-476.1881
Citation
L. W. Yang, J. H. Li, R. J. Wang, "The Research of SiC and Si3N4 Whiskers Reinforced Si3N4 Composites to Improve its Wear and Mechanical Properties", Key Engineering Materials, Vols. 474-476, pp. 1881-1886, 2011
Online since
April 2011
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$32.00
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