Densification, phase transformation and hardness of mullite-cubic BN composites prepared by spark plasma sintering
Densification, phase transformation and hardness of mullite-cubic BN composites prepared by spark plasma sintering
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放电等离子烧结莫来石-立方氮化硼复合材料的致密化、相变和硬度
DOI：
10.2109/jcersj2.118.157
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发表时间：
2010
影响因子：
1.1
通讯作者：
T. Goto
中科院分区：
文献类型：
--
作者：
Mikinori Hotta;T. Goto
以莫来石和立方氮化硼（cBN）粉末为原料，在100 MPa压力下，于1500-1700 ℃保温600 s，通过放电等离子烧结制备了莫来石-cBN复合材料。研究了莫来石-BN复合材料的致密化、显微结构和硬度以及莫来石-BN复合材料中立方氮化硼向六方氮化硼（hBN）的相变。在1500°C下获得了完全致密的莫来石-cBN复合材料，其初始含量为10-30体积%，相对密度超过95%，而cBN没有相变。当cBN含量为10体积%时，莫来石-BN复合材料的致密化没有受到抑制。当cBN的加入量超过20体积%时，莫来石-BN复合材料的致密化受到抑制。莫来石-BN复合材料中cBN的相变开始于1600-1700°C。在1500°C烧结时，未发生cBN相变的莫来石-BN复合材料的硬度达到最大值16 GPa。
Mullite-cubic boron nitride (cBN) composites were prepared using mullite and cBN powders by spark plasma sintering at temperatures of 1500-1700°C for a holding time of 600 s under a pressure of 100 MPa. Densification, microstructure and hardness of the mullite-BN composites and the phase transformation of cBN to hexagonal BN (hBN) in the mullite-BN composites were studied. Fully dense mullite-cBN composites originally containing 10-30 vol% cBN with relative density of over 95% were obtained at 1500°C without the phase transformation of cBN. At the cBN content of 10 vol%, the densification of the mullite-BN composite was not inhibited. When more than 20 vol% cBN was added to mullite, the densification of the mullite-BN composites was suppressed. The phase transformation of cBN in the mullite-BN composites started at 1600-1700°C. The hardness of mullite-BN composites originally containing 20 vol% cBN sintered at 1500°C without the phase transformation of cBN reached a maximum value of 16 GPa.
“内塔博”
DOI：
--
发表时间：
2019
期刊：
伝え継ぐ 日本の家庭料理12 米のおやつともち
影响因子：
--
作者：
平島円;磯部由香;堀光代;樫下達也・多賀秀紀・小山英恵・笹野恵理子;笹野恵理子;磯部由香
通讯作者：
磯部由香