B-C-N系超硬材料的研究进展

无机材料学报, 2000, 15(4): 577-583. doi: 10.3321/j.issn:1000-324X.2000.04.001

B-C-N系超硬材料的研究进展

张兴旺 ^1, , 邹云娟 ^2, , 严辉 ^3, , 陈光华 ^4, , LU Qing-Ming ^5,

1.中国科学院上海硅酸盐研究所无机功能材料开放实验室, 上海 200050

2.中国科学院上海硅酸盐研究所无机功能材料开放实验室, 上海 200050

3.中国科学院上海硅酸盐研究所无机功能材料开放实验室, 上海 200050

4.中国科学院上海硅酸盐研究所无机功能材料开放实验室, 上海 200050

5.Institue of Chemistry ,Shandong University Jinan 250100,China

关键词：超硬材料 , B-C-N系 , 碳基材料 , 硼基材料

Research Progress for Novel Superhard Materials of B-C-N System

Keywords： KTiOAsO4 crytstal , synchorton radation topography , defect , ferroelectiv domain

超硬材料的合成是目前材料科学研究领域的热门课题之一.近年来，由于碳基和硼基超硬材料的理论设计和发现，引起了人们在实验和理论上对硬度与金刚石接近，甚至超过金刚石的材料研究兴趣.在B-C-N系超硬材料中，除了金刚石和立方氮化硼(c-BN)以外，beta-C3N4、立方氮碳化硼以及富勒烯等材料，也正日益受到国际材料界的重视.本文就B-C-N系超硬材料的最新研究进展做一综述.

It is significant to reearch the growth defects of KTIOAsO4 crystal in order to impprove its optical micrography and applcations The growth growth fefects of KTA were studied by thwe methods of optical micrography and synchrotonn radiation topography .The result indicates that two kinds of etchant produce a marked effect to show the defects of KTA crystal anf the main defects in KTA crystqal are ferroelectric domain growth striation sector boundary sisloaction and inclusion The forming casus of thwe defects was also discussed

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