Synthesis and Consolidation of Diamond Podwer with Explosives

在1997年的研究项目中，完成了在原炸药合成实验装置上安装新设计的消声装置。因此，可以使周围区域的噪声降低到低于85 ab的程度。据悉，该公司将于1998年4月对这一每月可生产10万克拉钻石的新设备进行试验，并于10月开始实际生产。随着该降噪装置的研制，金刚石微粉的规模化生产将成为可能，沿着实际操作，应从化学处理系统的设计着手，如大型酸处理、分级处理等。介绍了冲击合成金刚石的基本原理、冲击合成金刚石的工艺流程、冲击合成金刚石的环境污染防治设施。计划综合确认在 关于我们 最终每月生产10万克拉金刚石的生产系统。由熊本大学藤田教授领导的高温下冲击压实金刚石粉末的研究课题得以实施。该实验的主要特点在于将金刚石粉末置于高温气氛（真空中1000 ℃左右）中，使金刚石颗粒的塑性变形能降低，然后利用高能炸药爆轰产生的超高压，在不使用任何粘合剂的情况下直接固结金刚石粉末。本学年尝试用HMX型炸药（爆速8.5km/sec）进行冲击压实实验，取得了较好的效果。1997年11月在熊本大学召开的爆炸、冲击波和高压现象的工业应用国际研讨会上公开展出了这一成果。目前，人们已经认识到铝合金作为硬盘材料的加工所面临的一些困难。但在超硬钢的磨削加工方面却表现出了很好的独特性。有关磨削性能的论文发表计划在1998年完成。少

In the research project of the 1997 year, it was accomplished the installation of a newly designed noise-absorbing facility on the original experimental assembly for explosive synthesis. Consequently, it is possible to make the noise decreased to an extent of below 85 ab at the surrounding areas. The plan has been decided that in April of 1998 a testing experiment will be conducted on this newly equipped assembly which is capable of producing 100,000 carats diamond per month and in October the practical operation will be started. With the development of this noise-absorbing facility, the large-scale production of diamond powder will possibly be realizable.Along with the practical operation, it should be started on the designs of chemical treatment system, such as large-scale acid-treatment and grading treatment etc., of shock-synthesized diamond, as well as of the facilities against the environmental pollution. It is planed that the comprehensive confirmation will be determined on the … More production system for the final outcome of 100,000 carats diamond per month.The research subject on shock compaction of diamond powder under high-temperature, led by Prof.Fujita, at Kumamoto University, was carried out. The major characteristic of the experiment lies on that the diamond powder is subject to a high-temperature atmosphere (1000ﾟC or so in vacuum) to have the plastic deformation energy of the diamond particle decreased, then, by ultra-high pressure from the detonation of high explosive the diamond powder is directly consolidated without any adhesives. In this academic year, the shock compaction experiment was conducted as a try using HMX-type high explosive (detonation velocity 8.5km/sec) and a quite excellent result has been reached. The achievement was publicly exhibited at the International Workshop on Industrial Applications of Explosion, Shock Wave and High Pressure Phenomena, held at Kumamoto University, November, 1997.On the grinding properties of the refined and graded diamond powder to various substances, it is only at the stage of experiment. At present, it has been realized that a few difficulties confronted us on the processing of aluminum alloys, which used as hard disk substance. However, it exhibits a very good uniqueness on the grinding of super-hard steel.The presentations of papers on the grinding properties are scheduled to accomplish in the 1998 year. Less