What types of coating can I apply with flame spraying?

Frequently Asked Questions

Flame spraying is the oldest of the thermal spraying processes. A wide variety of materials can be deposited and the majority of components are sprayed manually. Powder and wire feed variants exist. Flame spraying has distinct advantages, including ease of application and low cost, compared with other spraying processes. These benefits make it a widely used process. Flame spraying can be used to apply coatings of various carbides, oxide ceramics, cermets, metal alloys and polymers. Porosity is in the range 5-15%, oxide content between 2 and 10%, and typical coating thicknesses are in the range 0.2-10 mm. Bond strength values usually vary between 30-60 MPa.

Commonly used coating materials include:

• Cermets (e.g. WC/Co, WC/Co/Cr, Cr₃C₂/NiCr, NiCrSiBC)
• Ceramics (e.g. Cr₂O₃, Al₂O₃, ZrO₂)
• Metal alloys (e.g. steels, nickel, chromium and cobalt alloys)
• Pure metals (e.g. Ni, Cu, Al, Mo, Ti)
• Polymers (e.g. polyester, nylon)

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