Performance characterization of cryogenic treated diamond particles
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摘要: 对3种颗粒尺寸的人造金刚石进行深冷处理,并对处理前后的金刚石颗粒进行拉曼光谱、荧光光谱分析及静压强度测试。结果表明:粒度标记30/35的金刚石颗粒处理后静压强度平均值提高了23.2%,内部残余应力下降了25.93%。深冷处理使人造金刚石颗粒磁性降低,颗粒中的缺陷得到修复,内部残余应力释放,静压强度提高。Abstract: Three kinds of synthetic diamond with different particle sizes were treated by cryogenic treatment, and the diamond particles before and after treatment were analyzed by Raman spectrum, fluorescence spectrum and static press tester. The results showed that the average static pressure strength of diamond 30/35 was increased by about 23.2%, while the internal residual stress was reduced by 25.93%. In conclusion, cryogenic treatment could reduce the magnetic properties of synthetic diamond particles and repair their defects. It also helped to release the internal residual stress and increase the static pressure strength.
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