＜Iron Chromium Aluminum Yttrium (FeCrAlY) Alloy Coating＞
The excellent performance of the FeCrAlY alloy is from the property to generate a protective oxide layer that helps to resist chemical attack in aggressive environments. In addition, fusing process for as-sprayed coating will not only promote the corrosion-resistant intermetallic phases but further densify the coating to enhance its protective barrier characteristics at higher temperature.
The addition of yttrium enhances the stability and adhesion of the oxide layer. MCrAlY coating is important for the prolonged life-time of high temperature ceramic coating systems such as TBC coatings and abradable systems. The alumina layer is an oxygen diffusion barrier that will remove oxygen from the coating and substrate. Base on different applications, chromium oxide or other mixed-specie oxide is beneficial to resist hot corrosion and sulfidation.     Moreover, higher ratios of chromium to aluminum typically promote better chromium oxide. Typical uses include oxidation and hot corrosion resistance of industrial gas turbines (IGT) components such as turbine buckets, blades, shrouds...etc. Moreover, the applications include corrosion-resistant bond coat layer for thermal barrier coatings (TBCs), ceramic clearance control (abradable) coatings and ceramic dielectric layer coatings, exhaust manifolds, ducts and components use in flue gas and fly ash industrial systems. Additionally, the MCrAlY coating is also used to restore mismatched and worn parts that are exposed to high temperature oxidizing atmospheres, protect heat-treating fixtures and also perform resistance to corrosion for boiler tubes used in waste-to-energy or digester applications.
Plus Metal Tech (PMT) provides services of protective and functional coatings, such as wear-resistant, corrosion-resistant, erosion-resistant, conductive and insulative coatings. Our thermal coating service is fully customized. Process choices depend on customer’s demands and the chosen materials. For any questions about surface treatment and enhancement, please do not hesitate to give us the message or email. We welcome for the discussion with you.