Study on gaseous and solid inclusions in synthetic diamond crystals

The morphology of inclusions in FeNi catalyst synthetic diamond was observed by optical microscopy. It was found that the gaseous inclusions in diamond mainly showed bubbles of different sizes, scattered small bubbles and cloud floating in the crystal; solid inclusions Mainly graphite inclusions and metal inclusions; through the analysis of diamond static pressure strength, TI, TTI, etc. of different inclusion types and contents, it is found that the quality of diamonds without inclusions and almost no inclusions is the best, metal The inclusions have little effect on the quality of synthetic diamond, followed by gaseous inclusions, and graphite inclusions have the greatest impact on the quality of synthetic diamond. (Diamond and Abrasives Engineering, 2009, Issue 3)