抄録
The effect of phosphorous and carbon contents and sintering conditions on the wear resistant properties of ferrous sintered materials were investigated. Wear test was conducted using the sintered material as the pin and hard Cr-plated Al-alloy disk as the mating material. By choosing compacting pressure of 490MPa and sintering conditions of 1203 K and 0.3 ks for Fe-5.6mass%P-1.6mass%C alloyed powder, the porosity of 5.5%, the average pore size of 23μm and the average grain size of 15μm were obtained. Proper anti-wear characteristics are obtained after making the fine-grained microstructure. Minimum wear amount was achieved on the Fe-5.5 mass%P-2.0mass%aC-3.0mass%Ni-3.0mass%Mo alloyed powder specimen pressed at 294 MPa, sintered in vacuum at 1203 K for 0.3 ks and heat-treated. The specimen shows 0.7% porosity, the average pore size of 8μm, the average grain size of 15μm, and the macro-hardness of Hv700 with a hardened matrix.
