GASKET WITH HIGH TEMPERATURE COATING

摘要

A method of making a gasket (110) having a high temperature coating (150) that includes obtaining a substrate (120) formed from a metallic material and having the shape of a gasket, applying a nanoparticle suspension over the outer surfaces (124, 126) of the substrate (120), and heating the substrate (120) or to a first elevated temperature to form an undercoat layer (160) of a self-protective oxide coating (162). The method also includes applying a liquid comprising boron nitride over the undercoat layer (160) and drying the boron nitride liquid at a second elevated temperature to form an overcoat layer (170).