在触媒生长cBN区观察到wBN晶粒  

A EMBRYONIC FORM OF wBN CRYSTAL IN ZONE OF cBN GROWTH

作　　者：张铁臣[1] 于三[1] 郭伟力[1] 刘建廷 邹广田[1] 李冬妹[1] 

机构地区：[1]吉林大学超硬材料国家重点实验室

出　　处：《高压物理学报》1996年第2期137-140,共4页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金

摘　　要：用高分辨率（０．２ｎｍ）电子显微镜，对ｈＢＮ－触媒体系经高温高压处理后的产物观察中，看到尺寸约为３０ｎｍ的微小颗粒，经电子衍射方法判定其具有纤锌矿结构，为ｗＢＮ的雏形晶粒。In the present paper,embryonic form of wBN crystal was observed in hBN catalyst system after treatments under static high pressure(～5.0GPa)and high temperature (～1500℃),the size of the embryonic crystal was about 20～30nm.It is larger than the critical nuclei and smaller than the critical crystal.The phase of wBN was determined by the electron diffraction.

关 键 词：电镜观测 雏形 晶粒 氮化硼 

分 类 号：O613.81[理学—无机化学] O766.1[理学—化学]