白云石内衬材料在人造金刚石合成中的机理研究  

Mechanism study on dolomite lining for the artificial synthetic diamond

作　　者：武艳强 林玉 郑文萍 李效政 

机构地区：[1]郑州华晶金刚石股份有限公司,郑州450001 [2]郑州人造金刚石及制品工程技术研究中心有限公司,郑州450001

出　　处：《超硬材料工程》2013年第4期1-5,共5页Superhard Material Engineering

基　　金：国家自然科学基金项目(50572032)

摘　　要：通过X射线粉末衍射仪(XRD)、扫描电子显微镜(SEM)对高温高压前后白云石内衬的晶相以及形貌进行分析。结果表明白云石内衬材料中的白云石相在高温高压前后没有发生相变,但是科石英相在高温高压后发生相变。与此同时,白云石内衬的形貌也发生变化,并且不同区域的形貌也不同,形貌的变化是与温度、压力的变化同步的。分析表明这主要是由于白云石内衬不同区域的温度、压力分布不同造成的。The phases of dolomite lining before and after high temperature and pressure were studied by X-ray powder diffraction （XRD）, while the morphologies were analyzed by scanning electron microscope （SEM）. The results indicated that the dolomite phase in dolomite lining has not changed, but coesite phase has changed after high temperature and pressure. At the same time, the morphologies of the dolomite lining were changed with the different regions which were synchronized with the changes of temperature, pressure. The analysis showed that this is mainly due to dolomite lining with different temperature, pressure distribution in the different areas.

关 键 词：人造金刚石 白云石内衬 温度 压力 

分 类 号：TQ164[化学工程—高温制品工业]