铁基触媒中铁含量对合成金刚石形貌及氮含量的影响(英文)  

EFFECTS OF THE IRON CONTENT IN IRON-BASE CATALYST ON THE MORPHOLOGY AND NITROGEN CONTENT OF THE SYNTHETIC DIAMOND

作　　者：郑友进[1,2] 贾晓鹏[1] 贾洪声[1] 马红安[1] 

机构地区：[1]吉林大学 超硬材料国家重点实验室,长春130012 [2]牡丹江师范学院,黑龙江牡丹江157000

出　　处：《硅酸盐学报》2010年第5期955-958,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(5057032);黑龙江省高等教育青年基金(1154G10)资助项目

摘　　要：利用3种铁基粉末触媒,在国产六面顶压机上进行了金刚石单晶的合成实验,研究了高压高温条件下,铁基粉末触媒随铁含量的改变,石墨碳–铁基触媒体系合成金刚石条件的变化规律以及金刚石单晶的形貌,并利用红外光谱对金刚石中的含氮量进行了检测。结果表明:随着铁基粉末触媒中铁含量的增加,合成金刚石的压力和温度逐渐升高,金刚石生长的"V形区"上移,晶体的透明度变差,所合成晶体的含氮量逐渐减少。The diamond single crystal was synthesized by a China-made cubic apparatus using three kinds of ironbase powder cata-lyst under high temperature and high pressure. The change regularity of diamond synthesis conditions in a graphite-catalyst system and the morphologies of the diamond single crystal were investigated. The nitrogen content in the diamond was detected using a Fou-rier transform infrared spectroscopy. The results indicate that with the increase of iron content, the synthesis pressure and temperature were increased, the V-shape region for diamond formation moved up, and its transparence and the nitrogen content decreased.

关 键 词：高压高温 金刚石 透明度 含氮量 

分 类 号：TQ164[化学工程—高温制品工业]