Synthesis and Consolidation of Diamond Podwer with Explosives

金刚石粉末与炸药的合成与固结

• 批准号: 07045031
• 负责人: FUJITA Masahiro
• 金额: $ 2.75万
• 依托单位: KUMAMOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07045031/
• 关键词: Absorbing; Explosive synthesis; Granding treatmen; high temperature shock compaction; High explosive; Grinding; Consolidation; 水中衝撃波

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

在1997年的研究项目中，完成了在原爆炸合成实验装置上安装新设计的吸声装置。因此，可以使周围地区的噪音降低到85ab以下的程度。计划于1998年4月对这一月产10万克拉钻石的新装置进行测试试验，并于10月开始实际运行。随着该吸声装置的发展，有可能实现金刚石粉的规模化生产。结合实际操作，应从冲击合成金刚石的大规模酸处理、分级处理等化学处理系统的设计以及环境污染防治设施的设计入手。计划在…上确定综合确认更多的生产系统，最终每月生产10万克拉的钻石。熊本大学藤田教授领导的研究课题是高温下金刚石粉末的冲击压实。实验的主要特点是将金刚石粉末置于高温气氛中(真空中1000ﾟC左右)，使金刚石颗粒的塑性变形能降低，然后通过炸药爆轰产生的超高压使金刚石粉末在没有任何粘结剂的情况下直接固化。本学年对HMX型高能炸药(爆速8.5公里/秒)进行了冲击压实试验，取得了较好的效果。这一成果于1997年11月在熊本大学举行的爆炸、冲击波和高压现象的工业应用国际研讨会上公开展出。关于精炼和分级的金刚石粉末对各种物质的研磨性能，目前仅处于实验阶段。目前，人们已经认识到，作为硬盘材料的铝合金在加工过程中面临着一些困难。然而，它在超硬钢的磨削方面表现出了非常好的独特性。关于磨削性能的论文预计将在1998年完成。较少

项目成果

藤田 昌大、伊東 繁 他: "水中集束衝撃波を利用した高温粉末衝撃固化装置の開発" 塑性と加工. 38. 382-384 (1997)

Masahiro Fujita、Shigeru Ito 等人：“利用水下聚焦冲击波开发高温粉末冲击固化装置”，《塑性与加工》，38. 382-384 (1997)。

Masahiro Hujita, Shigeru Itoh, et al.: "On Generation of Ultra-High Pressure by Converging of Underwater Shock Waves" Journal of Pressure Vessel Technology (Transactions of the ASME). vol.120. 51-55 (1998)

Masahiro Hujita、Shigeru Itoh 等人：“On Generation of Ultra-HighPressure by Converging of Underwater Shock Waves”《压力容器技术杂志》（ASME 汇刊）。

Masahiro Fujita, Shigeru Itoh, et al.: "High-Temperature Shock Consolidation of Hard Ceramic Powder" Physica B. vol.239. 1-5 (1997)

Masahiro Fujita、Shigeru Itoh 等人：“硬质陶瓷粉末的高温冲击固结”Physica B. vol.239。

伊東繁、藤田昌大: "収束された水中衝撃波を利用した衝撃固化装置の特性(第2報 磁性粉末の形態式と衝撃圧縮過程の数値計算)" 日本機械学会論文集(B編). 63巻605号. 209-215 (1997)

Shigeru Ito、Masahiro Fujita：“使用聚焦水下冲击波的冲击固化设备的特性（第二次报告：磁粉的形态和冲击压缩过程的数值计算）”日本机械工程学会会刊（B版）63卷605。 209-215（1997）

伊東 繁, 藤田 昌大 他: "On Generation of Ultra-High Pressure by Converging of Underwater Shock Waves" Journal of Pressure Vessel Technology. 120. 51-55 (1998)

Shigeru Ito、Masahiro Fujita 等人：“论水下冲击波汇聚产生超高压”《压力容器技术杂志》120. 51-55 (1998)。