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Investigation of Thermal Shock Behaviors for Machinable SiC/h-BN Ceramic Composites

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Abstract:

The SiC/h-BN ceramic composites with different h-BN size were fabricated by Plasma Active Sintering (PAS) method. For the SiC/ nano-sized h-BN ceramic composites, when the h-BN content was increased, because the nano-sized h-BN crystals were homogeneously dispersed around the SiC grains of the matrix, the bending strength and fracture toughness of the composites decreased slowly, but the hardness decreased sharply, therefore the machinability and thermal shock resistance were improved noticeable.

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Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

391-394

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.391

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Online since:

May 2007

Authors:

Hai Yun Jin, Guan Jun Qiao, Ji Qiang Gao

Keywords:

Machinability, Mechanical Behavior, PAS, SiC/h-BN Nano-Composites, Thermal Shock Resistance

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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