| 添加剂Li8SiN4对cBN晶体形貌的影响 |
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| 引用本文： | 周艳平,阎学伟.添加剂Li8SiN4对cBN晶体形貌的影响[J].高压物理学报,1996,10(1):56-62. |
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| 作者姓名： | 周艳平 阎学伟 |
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| 作者单位： | 中国科学院长春应用化学研究所 |
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| 基金项目： | 国家自然科学重点基金资助 |
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| 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。
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| 关 键 词： | Li8SiN4 cBN 形貌 等积形晶体 |
| 收稿时间： | 1994-12-27; |
EFFECTS OF ADDITIVE Li 8SiN 4 ON cBN CRYSTAL MORPHOLOGY |
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| Zhou Yanping,Yan Xuewei,Ma Xianfeng,Zhao Tinghe,Xie Yunfen.EFFECTS OF ADDITIVE Li 8SiN 4 ON cBN CRYSTAL MORPHOLOGY[J].Chinese Journal of High Pressure Physics,1996,10(1):56-62. |
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| Authors: | Zhou Yanping Yan Xuewei Ma Xianfeng Zhao Tinghe Xie Yunfen |
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| Institution: | Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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| 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. |
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| Keywords: | cBN Li 8SiN 4 crystal morphology |
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