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Mechanical Properties and Oxidation Resistance of Hot Pressed B4C Ceramics Material

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Abstract:

B4C ceramics were obtained using hot-pressing method. The effect of different sintering temperatures on the microstructures and mechanical properties of B4C ceramics were investigated. Oxidation resistances were studied over the range 600-850°C. The experimental results showed that the relative density, bending strength and fracture toughness all increased first and then decreased with increasing the sintering temperature. The Vickers-hardness increased as the sintering temperature increasing. When the sintering temperature was 1950°C, the B4C ceramics showed the optimized properties. The values of its relative density, Vickers-hardness, bending strength and fracture toughness were 99.1%, 34.0 GPa, 524.6 MPa and 6.56 MPa·m1/2, respectively.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

2272-2275

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.2272

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Online since:

May 2011

Authors:

Xin Yan Yue, Bi Shuang Chen, Jing Zhao, Hong Qiang Ru, Wei Wang

Keywords:

Hot Pressed B4C, Microstructure, Oxidation Resistance

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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