Iron-based sintered sliding product

摘要

An iron-based sintered sliding product having improved contact fitness and resistance to wear, in which 0.1 to 3 wt. % free graphite and Fe-P-C ternary alloy phase of hardness MHv 300 to 850 having over 3% to 20% of area are dispersed into an iron-based matrix containing either one selected from 0.1 to 1 wt. % Sn and 0.1 to 1 wt. % Zn, and 1 to 10 wt. % Cu and 0.3 to 1 wt. % C. As a modified embodiment of the present invention, an alloy containing Fe-Mo as a main component may be dispersed into the iron-based matrix in place of the aforesaid Fe-P-C ternary alloy phase. Said Fe-P-C ternary alloy phase may be prepared by mixing a single metal element, Fe, C and P into the powdered raw material of the iron-based matrix. Alternatively, said Fe-P-C ternary alloy phase may be prepared by mixing Fe-P-C alloy powder into the powdered raw material of the iron-based matrix. Further, an alloy containing Fe-Mo as a main component may be prepared by mixing Fe-Mo-Si alloy powder into the powdered raw material of the iron-based matrix.