φ36腔体粉末材料合成金刚石工艺的试验和探讨

Experiment and discussion of synthetic technique of diamond in φ36 chamber using powder catalyst

本文对φ36腔体粉末材料合成人造金刚石的工艺设计依据、合成工艺参数设计、试验情况进行了较详细地阐述,对合成试验结果的特点、合成工艺、合成试验中发生的现象进行了简要分析。采用复合传压介质和动态补压、非恒功率加热等工艺进行了合成试验。试验结果表明,利用粉末材料合成的人造金刚石,晶体粒度集中(峰值粒度比例79.1%),高强度单晶料的提取率高(15kgf以上比例45.3%),平均单产比片状材料提高近28%,而且能耗及其它生产成本明显下降。我们认为,粉末材料合成人造金刚石,是一种值得在人造金刚石行业推广的合成技术。

This article elaborated the technological design basis , the synthetic parameter design and the experimental situation of φ36 chamber powder catalyst synthesizing diamond, and analyzed briefly the characteristic of the synthetic experiment, the synthetic technique and the phenomenon which occurred during the experiment. The experiment was carried on by using the compound pressure transmission medium, dynamic compensating pressure and non - permanent power heating. The results of experiment show that, using powder catalyst tO synthesize diamond, the crystal granularity is centralized（ peak value distribution of sizes 79.1% ） , ratio of high strength crystal increased（ ≥ 15kgf 45.3% ） ,and average yield enhanced nearly by 28% compared to disc catalyst method, moreover the energy consumption and other production cost obviously dropped. It is believed that, using powder catalyst to synthesize diamond will be one kind of technology which is worth to promote in the synthetic diamond field.