Sliding member

Abstract

An object of the present invention is to provide a sliding member which can slide for a longer period of time even in a dry state. In the present invention, the sliding member is provided with a sliding layer 3 containing 1 to 20 vol % of bismuth powder and/or bismuth alloy powder, 20 to 60 vol % of metal powder, and 1 to 20 vol % of a solid lubricant, the sum thereof being not more than 70 vol %, and the balance being a thermosetting resin. Therefore, a large quantity of metal powder and bismuth powder and/or bismuth alloy powder are mixed with the thermosetting resin in the sliding layer 3 , so that the thermal conductivity in the sliding layer 3 is improved, and hence heat does not accumulate in a sliding layer portion, by which seizure can be prevented.

What is claimed is:  
     
         1 . A sliding member provided with a sliding layer containing 1 to 20 percent by volume of bismuth powder and/or bismuth alloy powder, 20 to 60 percent by volume of metal powder, and 1 to 20 percent by volume of a solid lubricant, the sum thereof being not more than 70 percent by volume, and the balance being a thermosetting resin.  
     
     
         2 . The sliding member according to  claim 1 , wherein said metal powder contains at least one of copper-based alloy and aluminum-based alloy.  
     
     
         3 . The sliding member according to  claim 1 , wherein the solid lubricant contains at least one of polytetrafluoroethylene, graphite, and molybdenum disulfide.  
     
     
         4 . The sliding member according to  claim 2 , wherein the solid lubricant contains at least one of polytetrafluoroethylene, graphite, and molybdenum disulfide.  
     
     
         5 . The sliding member according to  claim 1 , wherein the thermosetting resin contains at least one of phenolic resin, polyimide resin, polyamide-imide resin, and epoxy resin.  
     
     
         6 . The sliding member according to  claim 2 , wherein the thermosetting resin contains at least one of phenolic resin, polyimide resin, polyamide-imide resin, and epoxy resin.  
     
     
         7 . The sliding member according to  claim 3 , wherein the thermosetting resin contains at least one of phenolic resin, polyimide resin, polyamide-imide resin, and epoxy resin.  
     
     
         8 . The sliding member according to  claim 4 , wherein the thermosetting resin contains at least one of phenolic resin, polyimide resin, polyamide-imide resin, and epoxy resin.  
     
     
         9 . The sliding member according to  claim 1 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         10 . The sliding member according to  claim 2 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         11 . The sliding member according to  claim 3 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         12 . The sliding member according to  claim 4 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         13 . The sliding member according to  claim 5 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         14 . The sliding member according to  claim 6 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         15 . The sliding member according to  claim 7 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.  
     
     
         16 . The sliding member according to  claim 8 , wherein the sliding member is used for a swash plate of a swash plate type piston pump.