Abstract
Relations between the pore constitution and the mechanical properties of sintered copper compacts, especially the changes in the elastic modulus and yield strength are investigated, and then the contact electrical resistance of the porous body against the other metal surface is measured.
How the pore constitution is related to the change of the real contact area with the increase of contact pressure is studied.
It is well known that the elastic modulus and yield strength increase with the density, and change considerably with the grain size, form and blending constitution for equal density.
The elastic modulus of the product made from electrolytic powder is smaller as the par-ticle size of powder decreases, and the increase of blending percentage of spherical powder induces the decrease of elastic modulus. The surface contact is easily improved with smaller elastic modulus of porous product.
