Sintered sliding member having exceptional corrosion resistance, heat resistance, and wear resistance; and method for producing said member

A method of producing a sintered sliding material with excellent corrosion resistance, heat resistance, and wear resistance, the method comprising the steps of:

• obtaining a mixed powder by mixing a plurality of powders containing one or more among Cu, Ni, Sn, P, and C in such a way that a total composition of the mixed powder becomes:
• 36-86 mass % of Ni;
• ;
• 1-11 mass % of Sn;
• 0.05-1.0 mass % of P;
• 1-9 mass % of C;
• and the Cu balance by using at least one of:
• a Cu—Ni alloy powder in which a C content is 0.6 mass % or less and a Si content is 0.15 mass % or less as inevitable impurities;
• and a Ni—Cu alloy powder in which a C content is 0.6 mass % or less and a Si content is 0.15 mass % or less as inevitable impurities;
• producing a green compact by pressing the mixed powder;
• and
• obtaining a sintered sliding material having a structure containing:
• an integrated matrix;
• and free graphite dispersed in a plurality of pores by sintering the green compact at 960-1140° C. so that a plurality of grains of alloy made of a Cu—Ni alloy or a Ni—Cu alloy disperse in the plurality of pores in the grain boundaries of the plurality of grains of alloy.