Study on Properties of Carbon Particle Modified Silicon Carbide Composite Ceramics

Author:

Lu You Jun1,Shen Hong Fang2,Wang Yan Ming2

Affiliation:

1. Beifang University of Nationalities

2. The South China University of Technology

Abstract

High-temperature mechanical properties, machinability, oxidation resistance and thermal shock resistance of different content of carbon particles modified silicon carbide composite ceramics (Cp/SiC) prepared by pressureless sintering techniques were studied. Adhesion of Cp/SiC to melted glass under 1000°C was also observed. The results showed that 15-Cp/SiC had the optimum machinability and it also did not adhere to melted glass at high temperature. And flexural strength, hardness, and fracture toughness of 15-Cp/SiC is 136.5MPa, 274.6kgf/mm2, 2.58MPa•m1/2 respectively. The good performance of Cp/SiC made it possible to be used as high temperature glass fixture, which means that Cp/SiC can not only improve the service life of fixture materials, but also broaden the application fields of SiC ceramics.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference10 articles.

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3. PAN Yusong, XU Yongdong, CHEN Zhaofeng, et al. Ablation properties analysis of 2D C/SiC composites [J]. Ordnance Mater Sci Eng (in Chinese), 2006, 29(1): 17–20.

4. BOITIER G, VICENS J, CHERMANT J L. Understanding the creep behaviorof a 2. 5D C/SiC composite I : morphology and microstructure of the as received material[J]. Materials Science and Engineering, 2000, A279: 73-80.

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