NOVELTY - A turbine compressor airfoil, comprises: a turbine compressor airfoil having an airfoil surface (32); a sacrificial coating (62) comprising a layer of aluminum (Al), chromium (Cr), zinc (Zn), a nickel (Ni)-Al alloy, an Al-silicon (Si) alloy, an Al-based alloy, a Cr-based alloy or a Zn-based alloy, an Al polymer composite, or a combination, or a layer of a conductive (70) undercoat and an overcoat (72) of an inorganic matrix binder having a set of ceramic particles and conductive particles embedded in it disposed on the undercoat; and an erosion-resistant coating (64).    USE - The turbine compressor airfoil is useful for compressors of industrial gas turbines.    ADVANTAGE - The turbine compressor airfoil has improved corrosion and erosion resistance.    DETAILED DESCRIPTION - A turbine compressor airfoil, comprises: a turbine compressor airfoil having an airfoil surface; a sacrificial coating comprising a layer of aluminum (Al), chromium (Cr), zinc (Zn), a nickel (Ni)-Al alloy, an Al-silicon (Si) alloy, an Al-based alloy, a Cr-based alloy or a Zn-based alloy, an Al polymer composite, or a combination, or a layer of a conductive undercoat and an overcoat of an inorganic matrix binder having a set of ceramic particles and conductive particles embedded in it disposed on the undercoat; and an erosion-resistant coating, where one of the sacrificial coating or the erosion-resistant coating is disposed on the airfoil surface and the other of the sacrificial coating or the erosion-resistant coating is disposed on the respective one, and where the sacrificial coating is more anodic than the airfoil surface or the erosion-resistant coating. An INDEPENDENT CLAIM is a method of making a turbine compressor airfoil, comprising: providing a turbine compressor airfoil having an airfoil surface; disposing one of a sacrificial coating or an erosion-resistant coating on the airfoil surface, the sacrificial coating comprising a layer of Al, Cr, Zn, an Ni-Al alloy, an Al-Si alloy, an Al-based alloy, a Cr-based alloy or a Zn-based alloy, an Al polymer composite, or a combination, or a layer of a conductive undercoat and an overcoat of an inorganic matrix binder having a set of ceramic particles and conductive particles embedded in it disposed on the undercoat; and disposing the other of the sacrificial coating or the erosion-resistant coating on the respective one that is disposed on the airfoil surface, where the corrosion resistant coating is more anodic with reference to the airfoil surface than the erosion-resistant coating.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a turbine compressor airfoil.    Airfoil surface (32)    Sacrificial coating (62)    Erosion-resistant coating (64)    Conductive layer (70)    Overcoat (72)