Effect of titanium plating on wear resistance and corrosion properties of 2195 Al-Li alloy
The wear and electrochemical properties of 2195-T6 Al-Li alloy before and after titanium plating were investigated by friction-wear test and electrochemical measurement,respectively.The corrosion mechanism of immersion experiment was discussed.The results indicate that the surface nanoindentation hardness of Al-Li alloy slightly increases and the surface grains are refined after titani-um plating.The friction coefficients are basically the same before and after titanium plating,and the wear performance is improved.The corrosion potential of Al-Li alloy increases,the corrosion current density reduces,and the impedance spectrum radius enlarges after titanium plating.This is because the titanium film formed on the alloy plays the roles of isolation and protection.
aluminum lithium alloyplating titaniumfriction and wearcorrosion performance
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