Patent ID: 7998238

Claim:
A sintered sliding member comprising a back metal and a ferrous sintered sliding body, the ferrous sintered sliding body being connected to the back metal, wherein said ferrous sintered sliding body comprises martensite phase having a solid soluble carbon concentration of 0.15 to 0.5 wt % and contains carbide in a content of 5 to 50% by volume, wherein said ferrous sintered sliding body includes a sliding surface, wherein said ferrous sintered sliding body is formed with at least one of recesses and closed pores at the sliding surface in an area ratio of 1 to 10%, and wherein a composition of said ferrous sintered sliding body contains at least one carbide selected from the group consisting of Cr7C3 carbide, M6C carbide and MC carbide, said at least one carbide being coarsened to have an average grain size of at least 40 μm, dispersed and precipitated therein in a content of at least 5% by volume by adding Cr powder, Mo powder, W powder, V powder or ferrous alloy powder contained high alloying element.