Preparation of β SiAlON-cBN Composites by Spark Plasma Sintering

摘要:

文章预览

SiAlON-cubic boron nitride (cBN) composite was prepared by spark plasma sintering (SPS) using -SiAlON and cBN powders as starting materials, and the effect of holding time on densification, phase transformation and hardness of the composite was investigated. The SiAlON-cBN composite containing 20 vol% cBN sintered at 1650oC for 60s was densified to >97% of theoretical density. cBN phase transformed to hexagonal boron nitride (hBN) in the SiAlON-cBN composite with increasing holding time at 1650oC. Vickers hardness of the SiAlON-20vol%cBN composite sintered at 1650oC for 60-300s was 17.7GPa, and the hardness decreased with increasing holding time.

信息:

期刊:

编辑:

Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo

页数:

241-242

引用:

M. Hotta and T. Goto, "Preparation of β SiAlON-cBN Composites by Spark Plasma Sintering", Key Engineering Materials, Vol. 403, pp. 241-242, 2009

上线时间:

December 2008

输出:

价格:

$38.00

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[4] M. Hotta and T. Goto: Materials Science Forum, Vol. 561-565 (2007), p.599 Fig. 1 Effect of holding time on the hardness of βSiAlON-20vol%cBN composite sintered at 1650 o C by SPS.

DOI: https://doi.org/10.4028/www.scientific.net/msf.561-565.599

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