STUDY ON HIGH DENSITY COMPACTION OF POWDER USING EXPLOSIVE COMPRESSION

爆炸压缩粉末高密度压实研究

• 批准号: 07555523
• 负责人: NISHIDA Minoru
• 金额: $ 0.51万
• 依托单位: EHIME UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555523/
• 关键词: Aluminium and copper and iron powders; Clindrical axisymmetric explosion technique; Detonation pressure; Hardness and melting points; Particle size; Inter-particle bonding; Carbite disparsion type composite material; 高密度成形; 密度; 粒子サイズ; 衝撃波; 粉体間の

(1) Aluminium and copper and iron powders were dynamically compacted using a clindrical axisymmetric explosion technique. The detonation pressure of explosive were varied to examine the effects of hardness and melting point of their metals on compactiom. The aluminium, copper and iron compacts with a specific density of 98% were produced. The detonation pressure of optimum compact were increased with hardness and melting points of metals.(2) The particle size of Co-based powders was varied to examine particle size on compaction. When using S-sized powder (with particle diameters <10mum), the processing parameters which produced high quality compacts were much more restrictive than those for M-sized (from 75mum to 100mum) and L-sized (from 125mum to 150mum) powders. In particular, the L-sized powder produced a cmppact which had only 2.5% porosity and exhibited excellent inter-particle bonding. Is is recommended that the particle size of powders should be 100mum during explosive compaction.(3) The mixing powders of Co-based alloy and Cr_7C_3 powders were compacted using a clindrical axisymmetric explosion technique. The relative density of comoact for the mixing powders was more than 97% without shatter of Cr_7C_3 powders.

(1)采用倾斜轴对称爆炸法对铝粉、铜粉和铁粉进行了动态压制。通过改变炸药的爆压，考察了金属的硬度和熔点对炸药压实的影响。生产出比重为98%的铝、铜和铁压坯。最佳压坯的爆轰压力随金属硬度和熔点的升高而增大。(2)改变Co基粉末的粒度以检查压实时的粒度。当使用S尺寸的粉末（粒径<10 μ m）时，生产高质量压坯的工艺参数比M尺寸（从75 μ m到100 μ m）和L尺寸（从125 μ m到150 μ m）粉末的工艺参数限制得多。特别地，L尺寸的粉末产生了仅具有2.5%孔隙率并表现出优异的颗粒间结合的压块。建议爆炸压制时粉末的粒度应控制在100 μ m。(3)采用斜轴对称爆炸技术对钴基合金和Cr_7C_3粉末的混合粉末进行了压制。混合粉末共混物的相对密度大于97%，Cr_7C_3粉末不破碎。

项目成果

西田稔: "Co基合金粉体の爆発圧縮成形に及ぼす粉体粒度の影響" 溶接学会論文集. 11. 162-167 (1993)

Minoru Nishida：“粉末颗粒尺寸对钴基合金粉末爆炸压缩成型的影响”日本焊接学会会议记录11. 162-167 (1993)。

Minoru NISHIDA: "Effect of Particle Size on Explosive Compaction of Co-Based Allot Powder" Trans. of J. W. S.24. 199-204 (1993)

Minoru NISHIDA：“粒度对钴基合金粉末爆炸压实的影响”Trans。

西田稔: "Co基合金粉体の爆発圧縮成形に及ぼす粉体粒度の影響" 溶接学会論文集. 11・1. 162-167 (1993)

Minoru Nishida：“粉末颗粒尺寸对钴基合金粉末爆炸压缩成型的影响”日本焊接学会论文集11・1（1993）。

Minoru NISHIDA: "Effect of Particle size on Exlposive Compaction of Co-Base Alloy Powder" Quarterly Jounal of The Japan Welding Society. Vol.11, No.1. 162-167 (1993)

Minoru NISHIDA：“粒度对钴基合金粉末爆炸压实的影响”日本焊接学会季刊。

Minoru NISHIDA: "Strength and Fracture Morphology Powde Compaction by Explosive Methoda" Jounal of The Soiety of Materials Science. Vol.43, No.488. 533-538 (1994)

Minoru NISHIDA：“爆炸法粉末压实的强度和断裂形态”材料科学学会杂志。