THERMAL BARRIER COATINGS USING INTERMEDIATE TCE NANOCOMPOSITES

摘要

An intermediate thermal expansion coefficient coating includes an NiCoCrAlY alloy. The coating contains nanoparticles of the alloy and alumina (14). A nanocomposite coating is placed on metals to protect them from high gas temperatures by providing thermal insulation. The nanocomposite coating includes a bond coating (16), an intermediate thermal expansion coefficient coating (14), and ceramic top coat (12). The intermediate thermal expansion coefficient coating comprises a NiCoCrAlY alloy and alumina nanoparticles and has a cermic top coat which is based on zirconia or high purity alumina.