Patent ID: 7733263

Claim:
A low emittance, camouflage, composite coating system for application to jet engine component surfaces in order to reduce their level of emitted energy to a value on the order of 0.2 in the one to six micron wavelength regime and render them undetectable by missile and ground-base infrared detection systems which comprises: (1) a metal alloy substrate; (2) an intermediate coating of nickel aluminide, diffusion bonded into the top surface of said substrate to form a coating about 1.2 to 1.4 mils in thickness; (3) a layer of a reflective germanium containing, silver metal coating about 0.5 mils thick superimposed on and bonded to said intermediate coating; and (4) a germanium containing, glass-ceramic, protective overlay coating about 2.0 mils thick superimposed on and bonded to said silver reflective coating.