摘要
FeNiCo触媒作为一种合成金刚石的新型触媒材料,在金刚石制造业中有着广泛的应用。而板状宝石级金刚石大单晶由于具有诸多优异性能,在各个领域具有很重要的应用价值。本研究在高温高压条件下,利用温度梯度法在FeNiCo触媒中生长板状的Ⅰb型宝石级金刚石。实验表明,调整晶床高度使金刚石具有适宜的生长速度0.34 mg/h;沿﹛100﹜面生长优质板状Ⅰb型宝石级金刚石的最佳温度区间为1 209～1 216℃;在此基础上合成出尺寸达3 mm的优质板状Ⅰb型宝石级金刚石大单晶。
FeNiCo alloy, as applications in the diamond a new type of solvent material for diamond synthesizing, has a wide range of manufacturing industry. Tabular large diamond crystals have many excellent properties and are used in various fields. In this research, tabular large diamond crystals were grown in FeNiCo- C system by using the temperature gradient method under high temperature and high pressure. The results showed that the appropriate growth rate of diamond was 0.34 rag/h, which can be got by changing the crystal bed height. Along the ｜ 100｜ growth facets, the best growth temperature for high-quality tabular Ⅰ b-type large diamond crystal was from 1 209 ℃ to 1 216 ℃. Under these parameters, a large Ⅰ b-type high-quality tabular large diamond crystal with the size of 6 mm was synthesized.
出处
《金刚石与磨料磨具工程》
CAS
2012年第2期15-19,共5页
Diamond & Abrasives Engineering
基金
国家自然基金项目(51172089)
河南理工大学博士基金项目(B2010-32)
