Consolidation of diamond and related material powders using hot dynamic compaction

使用热动态压实固结金刚石和相关材料粉末

• 批准号: 12555201
• 负责人: HOKAMOTO Kazuyuki
• 金额: $ 3.84万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555201/
• 关键词: Powder compaction; Dynamic compaction; Diamond; High-temperature shock consolidation; Diamond and related materials

A new system for hot dynamic compaction is developed and used for consolidating diamond and related material powders.For designing the system, the recovery of the sample is considered seriously due to the difficulty of its recovery at high temperature condition. Using a high explosive PBX whose detonation velocity is about 8.5 km/s, as well as using a moderate converging underwater shock wave assembly designed using numerical simulation, various diamond and related materials powders, are tried to be consolidated. The maximum pressure applied to the powders is estimated about 50 GPa and the optimum temperature for consolidation is ranging from 1150 to 1200 ℃. Graphitization above the temperature makes decrease the hardness of the recovered compacts.Under the optimum condition, the bulk materials of diamond and related materials show quite high hardness ranging from 60 to 100 GPa, Few cracks are observed but some blocks in the order of a few mm size are available. A sample of the mixture of diamond and c-BN powders shows a reaction between these materials keeping the diamond structure so called heterodiamond.

研制了一种新型的热动态压实系统，用于金刚石及相关材料粉末的压实。在设计系统时，由于样品在高温条件下难以回收，因此对样品的回收率进行了认真的考虑。利用起爆速度约为8.5 km/s的高爆PBX，以及采用数值模拟设计的适度会聚水下冲击波组件，尝试对各种金刚石及相关材料粉末进行固结。施加在粉末上的最大压力约为50 GPa，固结的最佳温度范围为1150至1200℃。温度以上的石墨化使回收的压块硬度降低。在最佳条件下，金刚石及相关材料的块体材料表现出较高的硬度，硬度范围在60 ~ 100gpa之间，几乎没有裂纹，但出现了几mm大小的块体。金刚石和c-BN粉末的混合物样品显示了这些材料之间的反应，保持了金刚石的结构，即所谓的异质金刚石。

项目成果

外本和幸 他: "衝撃粉末成形に及ぼす熱エネルギーの効果とその工業的利用の可能性"第51回塑性加工連合講演会講演論文集. 19-20 (2000)

Kazuyuki Tonomoto 等人：“热能对冲击粉末压制的影响及其工业应用的可能性”第 51 届塑料工作联盟会议记录（2000 年）。

K. Hokamoto et al.: "Advantages in the Use of Underwater Shock Wave for Dynamic Compaction"Proc. IMPLAST '03. 723-728 (2003)

K. Hokamoto 等人：“使用水下冲击波进行强夯的优点”Proc。

外本 和幸 他: "高温衝撃圧縮法によるダイヤモンド関連物質粉末の固化成形"第9回機械材料・材料加工技術講演会講演論文集. No.01-26. 101-102 (2001)

Kazuyuki Tonomoto等：“高温冲击压缩法对金刚石相关材料粉末的固化成型”第九届机械材料与材料加工技术会议论文集第01-26号（2001年）。

K.Hokamoto et al.: "The Use of High-Temperature Shok Consolidation Technique for Making Vavious Novel Bulk Materials"Proc.THERMEC'2000'. (CD-ROM, A3). 1-6 (2001)

K.Hokamoto 等人：“使用高温 Shok 固结技术制造 Vavious Novel Bulk 材料”Proc.THERMEC2000。

K. Hokamoto et al.: "Optimization of the Experimental Conditions for high-temperature shock Consolidation"Int. J. Impact Eng.. 24. 631-640 (2000)

K. Hokamoto 等人：“高温冲击固结实验条件的优化”Int。