Patent ID: 9404172
Filing Date: 2016-08-02
CPC Classification: B64C,C23C,F01D,F04D,F05D,Y02T

Claim Text:
1. An airfoil blade comprising: an airfoil blade component body comprising a polymer matrix composite and a metal sheath covering the polymer matrix composite; a metallic erosion strip disposed on a leading edge of the airfoil blade component body and comprising opposite terminal strip portions proximate to the leading edge at opposite sides of the airfoil blade component body; and a cermet coating disposed on a leading edge surface of the strip, the cermet coating having a compressive residual stress of about 90-110 ksi and comprising opposite terminal coating portions that are respectively associated with the opposite terminal strip portions and respectively recessed toward the leading edge of the airfoil blade component from the opposite terminal strip portions.