Mechanical properties of surface composite particles coated with finer particles

被引：3
|
作者：
Uchiyama, T [1 ]
Otani, M [1 ]
Otomura, Y [1 ]
Shinohara, K [1 ]
机构：
[1] HOKKAIDO UNIV,GRAD SCH,DIV MAT SCI & ENGN,SAPPORO,HOKKAIDO 060,JAPAN
来源：
KAGAKU KOGAKU RONBUNSHU | 1996年 / 22卷 / 03期
关键词：
composite particle; cohesive force; tensile strength; coefficient of internal friction; shear strength; angle of repose;
D O I：
10.1252/kakoronbunshu.22.655
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effect of the coated composite surface of particles on the mechanical properties of the powder bed was investigated. Polyethylene-silica surface composite powder was prepared at several coating ratios with Hybridizer. Various tests on mechanical properties of the powder bed were carried out with the prepared powder, and the following results were obtained: The ultimate tensile strength depends only on the conhesive force between particles, and the contact probability model of composite particles led to good agreement between the experimental and calculated values. The coefficient of internal friction and cohesive shear strength were influenced due to the interlocking effect of the surface roughness of composite particles. The effects of coating particles became small with dynamic properties like angle of repose. It is possible to control the mechanical properties in a stepwise fashion by changing the coating ratio of the particles.
引用
收藏
页码：655 / 661
页数：7
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