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What are the advantages of HVOF spraying?

Advantages of HVOF spraying over other thermal spray processes primarily relate to improved coating quality, such as:

  • Higher density (lower porosity) due to greater particle impact velocities
  • Higher strength bond to the underlying substrate and improved cohesive strength within the coating
  • Lower oxide content due to less in-flight exposure time
  • Retention of powder chemistry due to reduced time at temperature
  • Smoother as-sprayed surface due to higher impact velocities and smaller powder sizes
  • Better wear resistance due to harder, tougher coatings
  • Higher hardness due to less degradation of carbide phases
  • Improved corrosion protection due to less through thickness porosity
  • Thicker coating due to less residual stresses

Here are some of the disadvantages of HVOF spraying.

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

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