In the present research , scanning electron microscope ( sem ) , laser raman spectroscopy ( lrs ) , x - ray photoelectron spectroscopy ( xrs ) , x - ray diffraction ( xrd ) and electron probe micro analysis ( epma ) were utilized to investigate the difference in micro - structure and elements distribution between domestic and foreign pdcs . combined with analysis on current manufacturing process , the mechanism for the difference was discussed . scanning electron microscope ( sem ) , laser granularity analysis , atom emission spectroscopy ( aes ) and plasma emission spectroscopy ( icpaes ) are also utilized to investigate the grain shape and impurities of key material - diamond power 本课题采用扫描电镜、拉曼光谱、光电子能谱、 x -射线衍射分析、电子探针等方法分析了国内外聚晶金刚石-硬质合金复合片在微观组织结构、元素成分分布方面的差异，结合对现有烧结工艺的分析，研讨了造成这些差异的机理；采用扫描电子显微镜、激光粒度分析、原子发射光谱、等离子发射光谱等方法对关键原材料-金刚石微粉的晶形、杂质含量进行了比较分析测试。
