Surface Treatments for Turbine Components to Reduce Particle Accumulation During Use Thereof

A method for substantially preventing micropitting on a surface of a turbine engine component, comprising:

• treating the surface of the turbine engine component to provide an average roughness (Ra) of less than 12 microinches;
• and
• depositing a nitride and/or a carbide coating onto the treated surface at a thickness of less than 50 microns by electron beam physical vapor deposition, cathodic arc evaporation, or magnetron sputtering.

A method for substantially preventing micropitting on a surface of a turbine engine component, comprising:

• depositing a nitride and/or a carbide coating onto the surface at a thickness of less than 50 microns by electron beam physical vapor deposition, cathodic arc evaporation, or magnetron sputtering;
• and
• treating the coated surface of the turbine engine component to provide an average roughness (Ra) of less than 12 micro inches.