| 高温高压生长宝石级金刚石单晶的表面特征研究 |
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| 引用本文： | 臧传义,陈奎,胡强,黄国锋,陈孝洲,贾晓鹏. 高温高压生长宝石级金刚石单晶的表面特征研究[J]. 人工晶体学报, 2009, 38(3): 677-680 |
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| 作者姓名： | 臧传义 陈奎 胡强 黄国锋 陈孝洲 贾晓鹏 |
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| 作者单位： | 河南理工大学材料学院,焦作,454000;吉林大学超硬材料国家重点实验室,长春,130012 |
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| 基金项目： | 国家自然科学基金,河南省教育厅自然科学研究计划项目,吉林大学超硬材料国家重点实验室开放课题 |
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| 摘 要： | 本文利用高温高压温度梯度法,NiMnCo合金作为触媒,分别采用籽晶{100}和{111}作为生长面,合成了Ib型宝石级金刚石单晶,对其表面特征进行了分析和讨论.结果发现,宝石级金刚石单晶的表面特征不具有唯一性,多数情况下,晶体{111}面明显较{100}面平整,而且{100}面生长台阶的棱角不清晰,经常会出现经触媒融融过的痕迹,并且这种现象的出现跟籽晶生长面不同和合成温度条件高低无关;{111}面有时也会出现明显的生长台阶,棱角清晰,并且形状较为规则.宝石级金刚石晶体表面特征的不唯一性说明晶体表面特征对生长条件稳定性有更高的要求.
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| 关 键 词： | 表面特征 宝石级金刚石 温度梯度法 高温高压 |
Study on Surface Characters of Gem Diamond Crystals Grown by HPHT |
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| ZANG Chuan-yi,CHEN Kui,HU Qiang,HUANG Guo-feng,CHEN Xiao-zhou,JIA Xiao-peng. Study on Surface Characters of Gem Diamond Crystals Grown by HPHT[J]. Journal of Synthetic Crystals, 2009, 38(3): 677-680 |
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| Authors: | ZANG Chuan-yi CHEN Kui HU Qiang HUANG Guo-feng CHEN Xiao-zhou JIA Xiao-peng |
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| Affiliation: | 1.School of Materials Science and Engineering;Henan Polytechnic University;Jiaozuo 454000;China;2.Key Laboratory for Superhard Materials;Jilin University;Changchun 130012;China |
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| Abstract: | Ib gem diamond crystals wewe synthesized by temperature gradient method(TGM) under high temperature and high pressure(HPHT),with NiMnCo alloy as solvent metal,{100} and {111} surfaces as the growth facets,the surface characters of the samples were discussed and analyzed in this paper.It is found that,the surface characters are not exclusive;Generally,{111} surfaces are more smooth than {100} surfaces,and {100} surfaces often show not-sharp steps melted by solvent alloy,regardless of the different growth fac... |
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| Keywords: | surface character gem diamond temperature gradient method HPHT |
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