Ⅰb型宝石级金刚石单晶的多晶种合成  

The synthesis of gem diamond crystal with multi-seed under HPHT

作　　者：黄国锋[1] 臧传义[2] 马红安[1] 李尚升[1] 田宇[1] 肖宏宇[1] 张亚飞[1] 马利秋[1] 李勇[1] 陈孝洲[2] 贾晓鹏[1,2] 

机构地区：[1]吉林大学超硬材料国家重点实验室,吉林长春130012 [2]河南理工大学材料科学与工程学院,河南焦作454000

出　　处：《超硬材料工程》2008年第6期9-11,共3页Superhard Material Engineering

基　　金：国家自然科学基金项目(50572032)

摘　　要：高温高压下温度梯度法合成宝石级金刚石时，合成周期较长。单晶种合成效率低下，通过多晶种法可以直接有效地提高合成效率，因此文章对多晶种生长宝石级金刚石进行了研究，在高温高压条件下成功实现了多颗粒2-3mm级金刚石单晶的合成，优质单晶的平均增重速度最快可达1．88mg／h。The synthesis of gem diamond crystal needs a long time by temperature gradient method under high temperature and high pressure. It is inefficient to grow one single crystal with a seed at a time. It will improve the synthesis efficiency to take more crystals as seeds in a reaction cell. Therefore, this paper investigates the synthesis of multi-particle large single crystals using multi-seed in a reaction cell. Multi-particle diamond crystals with 2 - 3mm in size were sy-nthesized successfully in a reaction cell, and the average growth rate of high-quality single crystal increase to 1.88 mg/h.

关 键 词：宝石级金刚石 大单晶 温度梯度法 多晶种 

分 类 号：TQ164[化学工程—高温制品工业]