摘要
在4.5~5.0GPa,1500~1800℃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。
After adding Li 8SiN 4 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 4.5~5.0GPa and 1500~1800℃ respectively.The morphology of cBN crystals is studied.The result shows that the percentage of blocky cBN crystals synthesized with Li 8SiN 4 increase obviously,and except the partial tuncated tetragonal erystals,the most of them are tuncated octahedral crystals.The edges and corners of cBN crystals are accurate and sharp,and surfarces of them are dense and smooth.
出处
《高压物理学报》
CAS
CSCD
北大核心
1996年第1期56-62,共7页
Chinese Journal of High Pressure Physics
基金
国家自然科学重点基金资助