Metal members

Abstract

The invention provides metal members having liquid-repellent and corrosion-resistant surfaces, without the need for SAM surface treatment. A metal member of the disclosure has a porous surface, having the porous surface directly covered by a hydrocarbon-based oil comprising zinc dialkyldithiophosphate (ZnDTP). The porous surface may be an oxidized surface, and especially an anodized surface. The metal member may be a member of Al, Ti, Fe or Mg, or an alloy of any of these metals, or stainless steel. The concentration of the zinc dialkyldithiophosphate (ZnDTP) may be 0.1 mass % to 30.0 mass % with respect to the hydrocarbon-based oil.

1 . A metal member having a porous surface, wherein the porous surface is directly covered by a hydrocarbon-based oil comprising zinc dialkyldithiophosphate (ZnDTP). 
     
     
         2 . The metal member according to  claim 1 , wherein the porous surface is an oxidized surface. 
     
     
         3 . The metal member according to  claim 2 , wherein the porous surface is an anodized surface. 
     
     
         4 . The metal member according to  claim 1 , wherein the metal member is a member of Al, Ti, Fe or Mg, or an alloy of these metals, or stainless steel. 
     
     
         5 . The metal member according to  claim 1 , wherein the concentration of the zinc dialkyldithiophosphate (ZnDTP) is 0.1 mass % to 30.0 mass % with respect to the hydrocarbon-based oil. 
     
     
         6 . The metal member according to  claim 1 , wherein the hydrocarbon-based oil is an engine oil. 
     
     
         7 . The metal member according to  claim 1 , which is a member for an automobile. 
     
     
         8 . The metal member according to  claim 7 , which is to be used for a part to which an engine oil is to be supplied. 
     
     
         9 . The metal member according to  claim 7 , which is a member for an intercooler.