Corrosion Protection

Oxidation and Galvanic Corrosion Protective Coatings – Galva-SP3EC™
Corrosion causes the breakdown of essential properties in a material due to reactions with its surroundings. In the most common use of the word, this means a loss of ions of metals reacting with water and oxygen. This type of damage usually affects metallic materials, and typically produces oxide(s) and/or salt(s) of the original metal.

The material properties of SP3EC™ coating prevent corrosion and oxidation in several ways. First the structure of SP3EC™ is a crystalline diamond composition making it chemically inert to nearly all environmental threats. SP3EC™ is a dense and smooth low-porosity coating which will obstruct the diffusion of ions and prevent the surface from coming in contact with oxygen molecules which may lead to oxidation of the surface. SP3EC™ coatings can be hydrophobically tailored providing a contact angle greater than 90° furthermore providing a more dominant barrier between water molecules and the surface of the protected material. Finally, corrosion is a redox reaction where energy is produced by a spontaneous reaction which produces electricity, or where electrical current excites a chemical reaction. SP3EC™ is an excellent dielectric material and will deter the transfer of charge with the surrounding environment making it nearly impossible for electrochemical cell formation which leads to the galvanic corrosion.

SP3EC™ coatings can be applied to a wide range of metallic and non-metallic substrates at various thicknesses. SP3EC™ coatings are deposited at room temperature and are typically under 5 microns in thickness, providing no affect to the mechanical properties of the material or machined tolerances between parts. Coatings can be custom engineered for nearly any specification the customer requires, please contact a UPT engineer for more questions about your specific application.

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 or for more information please contact Jordan Larson at 704-888-2470 ext. 27.