Airfoil component having electrochemically insulating layer

摘要

An airfoil component (50) includes an aluminum alloy body (52) having at least an airfoil portion (160) and a root portion (162). A metallic layer (54) is located on at least a portion of the aluminum alloy body (52) and an electrochemically insulating layer (56) is located between and adjoining the aluminum alloy body (52) and the metallic layer (54). The electrochemically insulating layer (56) galvanically separates the metallic layer (54) and the aluminium alloy body (52) to facilitate reducing or eliminating galvanic corrosion.