In recent decades,China has made rapid progress in the research and production of single crystal diamond and diamond micropowder,and has become the world's largest producer of single crystal diamond and diamond micropowder.More than 50％of the world's synthetic diamond products come from China.Currently the single crystal diamond from ZhongNan Diamond Co.,LTD is used as reference standard in the market,and is di-vided into 1～9 types according to its strength.At present,there are mature and universal characterization methods for single crystal strength,impurity content,particle size and morphology.The evaluation methods of single crystal diamond are relatively all-sided.However,there is a short of evaluation methods for single crystal diamond crushed mi-cropowder,especially the strength test method of diamond powder is still not the charac-terization method generally recognized by the market.Nowadays,the strength test meth-ods of diamond micropowder include Raman spectroscopy,infrared spectroscopy,impact toughness method and cold press crushing method.In this paper,the characteristics of four testing methods are studied and compared,and the Raman spectroscopy testing and analyzing method is introduced in detail.
关键词
金刚石单晶/金刚石微粉/强度/拉曼光谱/冲击韧性
Key words
single crystal diamond/diamond micropowder/strength/raman spectrum/impact toughness
维普
万方数据