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What types of coating can I apply with HVOF spraying?


Frequently Asked Questions

High velocity oxy-fuel (HVOF) spraying is primarily used to apply high quality coatings of cermets such as WC/Co and WC/Co/Cr. Coating thickness is usually in the range 0.1-2 mm. Characteristic features of HVOF sprayed coatings include their low level of porosity at about 1-2vol% and low oxide content in the range 1-2wt%. The bond strength often exceeds 80MPa. These coatings can be used across a spectrum of engineering and manufacturing applications to enhance the surface properties of components. This allows preparation of cost effective, high performance parts made from low cost or lightweight materials with a functional surface.

HVOF spraying can produce coatings for:

  • Wear protection
  • Low friction surfaces
  • Corrosion protection
  • High temperature oxidation resistance
  • Electrical insulation
  • Repair and restoration of damaged components

Commonly deposited coating materials include:

  • Cermets (e.g. WC/Co, WC/Co/Cr, Cr 3C 2/NiCr, NiCrSiBC)
  • Ceramics (e.g. Cr 2O 3, Al 2O 3, ZrO 2)
  • Metal alloys (e.g. steels, nickel, chromium and cobalt alloys including NiCrSiB and MCrAlY's)
  • Pure metals (e.g. Ni, Cu, Al, Mo, Ti)
  • Polymers (e.g. polyester, nylon)
  • Composites (e.g. Ni-graphite)

See further information about Materials & Corrosion Management or please contact us.

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