Among the many benefits of pure platinum plating, it does not oxidize when exposed to pure laboratory air, with or without water vapor, until it reaches high temperatures.
The oxidation and hot corrosion resistance of high temperature nickel-base superalloy components can be improved by aluminide coating. Further improvements can be achieved by the use of platinum in these coatings
Surface Products provides both platinum plating and platinum aluminide diffusion coatings
Platinum Plating Services
Platinum in Aluminide Diffusion Coatings