添加剂Li8SiN4对cBN晶体形貌的影响

周艳平; 阎学伟; 马贤锋; 赵廷河; 谢云芬

doi:10.11858/gywlxb.1996.01.009

添加剂Li8SiN4对cBN晶体形貌的影响

doi: 10.11858/gywlxb.1996.01.009

中国科学院长春应用化学研究所，吉林长春 130022

详细信息

通讯作者:
周艳平

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出版历程
- 收稿日期: 1994-12-27
- 修回日期: 1995-09-12
- 发布日期: 1996-03-05

Effects of Additive Li8SiN4 on cBN Crystal Morphology

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

More Information

Corresponding author: ZHOU Yan-Ping

摘要

摘要: 在4.5~5.0 GPa，1 500~1 800 ℃范围内，在Li基复合氮硼化物的催化体系中添加Li8SiN4后，得到了具有光泽的棕色透明的cBN单晶。研究了cBN晶体的形貌，结果表明，添加Li8SiN4后得到的等积形cBN晶体的百分比明显增多，除部分截角四面体外，多为截角八面体晶体，且棱角尖锐，晶面致密光滑。
- Li8SiN4 /
- cBN /
- 形貌 /
- 等积形晶体
Abstract: After adding Li8SiN4 into the catalytic system of Li-complex borom nitrides, the glossy transparent cBN brown crystals were synthesized under the conditions of high pressure and high temperature in the range 4.5～5.0 GPa and 1 500～1 800 ℃ respectively. The morphology of cBN crystals is studied. The result shows that the percentage of blocky cBN crystals synthesized with Li8SiN4 increases obviously, and except the partial tuncated tetragonal crystals, the most of them are tuncated octahedral crystals. The edges and corners of cBN crystals are accurate and sharp, and surfaces of them are dense and smooth.
- Li8SiN4 /
- cBN /
- morphology /
- crystal

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