Bodycote Metallurgical Coatings

Overlay coatings for corrosion control

Turbine blades and nozzle guide vanes are exposed to high mechanical loads at elevated temperatures and have to contend with hot corrosion, erosion and oxidation. Bodycote Plasma & Thermal employs the latest integrated HVOF coating equipment to apply its range of MCrAlY overlay coatings to alleviate these problems.

These coatings are specifically designed for applications where resistance to oxidation and corrosion in a high temperature environment is required. This group of coatings may be iron based (FeCrAlY); nickel based (NiCrAlY); cobalt based (CoCrAlY) or combinations thereof (NiCoCrAlY, CoNiCrAlY etc.)

Thermal barrier coatings

Thermal barrier protection is required where turbine and combustor related components operate in temperatures approaching the maximum for either the overlay coating or the component material.

Bodycote Plasma & Thermal applies a plasma sprayed, zirconia based ceramic coating to provide a temperature gradient between the gas stream and the substrate. The thickness of the ceramic coating depends on the gas stream temperatures and the degree of cooling available.

Typical thicknesses range from 0.2mm to 0.5mm. In response to current industry needs Bodycote Plasma & Thermal has developed thermal barrier coatings in excess of 1mm thickness for transition pieces and combustion liners.

Bodycote Plasma & Thermal’s TBC coating systems are designed to operate at temperatures up to 1,400°C and are applied to combustors and airfoils to meet the requirements of the following OEMs: Pratt & Whitney Aircraft, Rolls Royce, General Electric, Siemens Westinghouse and Alstom.

Wear control coatings

Bodycote Plasma & Thermal offers a full range of HVOF and plasma applied tungsten carbide, chromium carbide, cobalt based alloys and ceramic coatings to provide wear resistance against high and low temperature abrasion and erosion.

Other coating technologies available

Bodycote Plasma & Thermal is part of the Bodycote Metallurgical Coatings business. This allows us to offer other coating technologies which can be used in a wide range of surface engineering technologies for example K-TECH, Thin Film, Sheradizing and Kolsterising coatings.

Commitment to quality, service and environment

Bodycote Plasma & Thermal is an industry leading supplier of specialist coatings which meet the demanding requirements of its LBGT customers.

Our commitment to this sector is reinforced by our ISO 9001:2000, ISO 14001, OHSAS 18001 and Investors in People (IIP) accreditations. We hold Rolls Royce SABRe 9000, Siemens Westinghouse, SNECMA and NADCAP programme accreditations.