Mechanical Properties and Oxidation Resistance of Hot Pressed B4C Ceramics Material

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 233-235)

Edited by:

Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He

Pages:

2272-2275

DOI:

10.4028/www.scientific.net/AMR.233-235.2272

Citation:

X. Y. Yue et al., "Mechanical Properties and Oxidation Resistance of Hot Pressed B4C Ceramics Material", Advanced Materials Research, Vols. 233-235, pp. 2272-2275, 2011

Online since:

May 2011

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Price:

$35.00

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