| 优质立方六面体金刚石大单晶的生长研究 |
| |
| 引用本文： | 陈奎,臧传义,陈立学,陈孝洲,吴杰,王杰.优质立方六面体金刚石大单晶的生长研究[J].人工晶体学报,2010,39(2):324-327. |
| |
| 作者姓名： | 陈奎 臧传义 陈立学 陈孝洲 吴杰 王杰 |
| |
| 作者单位： | 河南理工大学材料科学与工程学院,焦作,454000;吉林大学超硬材料国家重点实验室,长春,130012 |
| |
| 基金项目： | 河南省教育厅自然科学基金，吉林大学超硬材料国家重点实验室开放课题 |
| |
| 摘 要： | 高温高压静压触媒法合成的金刚石单晶,往往呈现六八面体形貌,因为立方六面体单晶{100}面的生长区间相对较小.本研究利用高温高压温度梯度法,自制Fe-Ni合金触媒,通过对合成组装和工艺进行合理调整后,控制晶体在相对低温适合{100}面生长区域内生长,得到的晶体均呈现完整立方六面体形貌;同时为抑制包裹体和其他杂质的进入,人为的提高晶体的径向平铺生长速度,抑制其轴向生长速度.以在33 h内合成的优质立方六面体晶体为例,晶体最大方向尺寸达到7.3 mm,重1.2克拉,其径向生长速度达到0.22 mm/h,轴向生长速度仅为0.08 mm/h,增重速度为7.3 mg/h.
|
| 关 键 词： | 高温高压温差法 立方六面体 径向生长速度 轴向生长速度 |
Growth of High-quality Large Cubic Gem Diamond Crystals |
| |
| CHEN Kui,ZANG Chuan-yi,CHEN Li-xue,CHEN Xiao-zhou,WU Jie,WANG Jie.Growth of High-quality Large Cubic Gem Diamond Crystals[J].Journal of Synthetic Crystals,2010,39(2):324-327. |
| |
| Authors: | CHEN Kui ZANG Chuan-yi CHEN Li-xue CHEN Xiao-zhou WU Jie WANG Jie |
| |
| Institution: | CHEN Kui1,ZANG Chuan-yi1,CHEN Li-xue2,CHEN Xiao-zhou1,WU Jie1,WANG Jie1(1.School of Material Science , Engineering,Henan Polytechnic University,Jiaozuo 454000,China,2.State Key Laboratory for Superhard Materials,Jilin University,Changchun 130012,China) |
| |
| Abstract: | Under high pressure and high temperature(HPHT),the diamond crystals often show hexoctahedral shape because of the growing region of the cubic {100} surface of a single crystal is very narrow.The diamond crystals were controlled to grow at a relatively low temperature,which is suitable for growth of {100} surface by temperature gradient method(TGM) under HPHT,with self-made Fe-Ni alloy solvent assisted,through adjusting the process of assembling and synthesis appropriately.All the crystals were synthesized t... |
| |
| Keywords: | TGM HPHT cubic hexahedron radial growth rate axial growth rate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《人工晶体学报》浏览原始摘要信息 |
| 点击此处可从《人工晶体学报》下载免费的PDF全文 |
|
