偏岭石与变高岭石微结构的区别  

Difference in Microstructures of Pianlinite and Metakaolinite

作　　者：刘钦甫[1] 陈济舟[2] 刘长龄[3] 张鹏飞[1] 王俊桥[2] 孟伟 

机构地区：[1]中国矿业大学资源开发工程系,北京100083 [2]天津理工学院材料物理所,天津300191 [3]天津地质研究院,天津300061

出　　处：《中国矿业大学学报》2000年第6期562-565,共4页Journal of China University of Mining & Technology

基　　金：国家自然科学基金资助项目! (4980 2 0 10 )

摘　　要：采用广角度 X射线衍射 -散射 ( WAXS)测试技术和由此得到的径向分布函数 ( RDF) ,研究了偏岭石与变高岭石的结构差异 .结果表明 ,变高岭石是由非晶相和少量结晶相物质组成的半晶物质 ,而偏岭石是由非晶相和中间序态组成的准晶物质 .虽然两者均以非晶质相为主 ,并具有相似的近程结构模型 ,但在非晶质相中近邻八面体的连结方式和近邻四面体的连结有序性方面仍存在较大差异 .此外 。The microstructure differences between pianlinite and metakaolinite were studied based on the wide angle X ray diffraction scattering technology and the radial distributing function for pianlinite and metakaolinite samples heated at different temperatures. The results show that the metakaolinite is a hemicrystal composed of non crystalline phase and a little crystalline phase, and the pianlinite is a quasicrystal composed of non crystalline and medium ordered phases. Although these two minerals are mainly composed of non crystalline phase and have the similar short range structure models, they still have the differences in the linkage form of adjacent octahedrals[AlO 6] and in the linkage ordering of adjacent tetrahedrals[MO 4]. In addition, the size of crystalline or order phase in the two minerals and the structure changes with temperature are also different.

关 键 词：偏岭石 变高岭石 微结构 广角X射线衍射-散射 WAXS 径向分布函数 

分 类 号：P578.94[天文地球—矿物学]