Chrome / Cadmium Replacement

Featured Product from Praxair Surface Technologies, Inc.

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The coating applications and associated coatings below are developed to effectively replace chrome and cadmium plating and ultimately improve the performance of your most critical components.

APPLICATION PROCESS PERFORMANCE CHARACTERISTICS

Diffusion

Our SermaLoy® J CF chrome-free diffusion coating offers protection against hot corrosion and oxidation attack in the combustor and turbine sections. Compatible with austenitic stainless steel and nickel- and cobalt-based superalloys, the diffusion SermaLoy J CF treatment can be tailored to each alloy and application. With a relatively low diffusion temperature, the post-coating heat treatment process is eliminated, which allows components to be refurbished without risking damage to brazed joints.

Engineered Slurries

Looking for unsurpassed protection against aqueous corrosion and heat scaling, as well as erosion and abrasion resistance? Our SermeTel™ CF chrome-free coatings systems offers that and more. SermeTel™ 2F-1 CF coating is designed to provide protection from severely corrosive conditions. Suitable applications include bearing supports, cases, shafts, compressor blades and vanes. SermeTel™ 6F-1 CF coating provides corrosion protection in high-temperature conditions and meets stringent OEM gas turbine specifications. SermeTel™ 5380 CF coating offers advanced corrosion protection with a smoother surface finish that improves efficiency for compressor components.

Thermal Spray Coatings

Tungsten carbide-cobalt (WC-Co) and tungsten carbide-cobalt chromium (WC-CoCr) coatings offer extraordinary hardness, wear protection and comparable corrosion protection to that of hard chrome plating for hard face coating or dimensional restoration of many airframe components such as landing gear, flight actuators, thrust reversers and tracks. And, select your level of protection based on the thermal spray application process that is right for you: detonation gun (D-Gun) or Super D-Gun™, high-velocity oxy fuel (HVOF) or plasma. For thermal barrier protection, our Zircoat™ ytrria-stabilized zirconia coating outperforms low-density thermal barrier coatings (TBCs) with its superior thermal shock resistance and virtually unlimited thickness capability. As combustion temperatures increase to improve engine efficiency, you need additional thermal protection that low-density TBCs can’t provide. Get four times the thickness and improve thermal shock resistance with a Zircoat coating.

Zinc-Nickel Plating

As a proven cadmium plating replacement, zinc-nickel plating (ZnNi) offers excellent sacrificial corrosion protection for steel and very good protection against white rust formation. The coating's high hardness combined with low hydrogen embrittlement makes it a viable replacement solution.