Wear/Friction Reduction

Wear Resistant and Friction Reducing Coatings – Wear-SP3EC™

Wear-SP3EC™ is a species of the SP3EC™ nanocrystalline diamond thin film family, which has been engineered specifically to reduce friction and increase wear resistance between two surfaces.

Surface modifications using the SP3EC™ coating on engineering materials provides many benefits for applications under high load; including decreased friction coefficient, improved load capability and opportunity to decrease overall weight. Other diamond-like coatings typically use a non-carbon interfacial layer to increase the adhesion of the film to the surface, but at the same time increasing the chance of failure under load. UPT uses a proprietary method developed in conjunction with the military to eliminate the need for a non-carbon interfacial layer which provides pure film adhesion to the surface allowing for increased wear prevention and film durability.

Application of SP3EC™ coatings have demonstrated up to a 10x improvement in surface hardness for a wide range of materials at thicknesses as small as 250 nanometers.

Wear-SP3EC™ coatings can be tailored to improve durability against the following failure modes:

  • Fretting
  • Galling
  • Scratching
  • Erosion
  • Corrosion


  • Improved wear and abrasion resistance
  • Direct bonding provides maximum adhesion, no interfacial layers
  • Up to 10X improvement in surface hardness
  • Resistant to fretting and galling
  • Provides corrosion protection
  • Dramatic decrease in friction

Potential engineering benefits from application of Wear-SP3EC™ coatings:

  • Decreased power consumption
  • Improved efficiency
  • Increased contact load capability
  • Opportunity to decrease component weight
  • Secondary lubrication
  • Preserved dimensional and thermal treatment tolerances

Proven Applications:

  • Gears
  • Internal Engine Components
  • Bearing Races
  • Shaft Seals
  • Compressor Components

The coating is applied using a Plasma-Enhanced Chemical Vapor Deposition (PECVD) chamber at room temperature. The coating is conformal and can be applied to complex geometries.

Compatible Substrates:

  • 4340, 9310, M2, C-300 and other Iron based alloys
  • 718, 625, Invar and other Nickel based alloys
  • 6-4, 6-2-4-2, CP and other Titanium based alloys
  • Nitinol
  • Carbides
  • Aluminum Alloys
  • Magnesium
  • Polymers
  • Silicon, Germanium

If your substrate is not listed above please contact Jordan Larson at 704-888-2470 ext. 27.