PCT converts the outer surface of light metals (including aluminum, titanium and magnesium) into a thin ceramic protective layer resulting in a rare combination of hardness, strength and resistance to wear and corrosion. Based on the principles of microarc oxidation (also called plasma electrolytic oxidation), PCT’s breakthrough method differs from traditional plasma anodization in that it enables ceramic surface protection of large-dimension structures. Additionally, PCT has developed a wide range of nano-based secondary sealers and engineers an application-specific solution where exceptionally harsh chemical or wear environments exist, or to address special requirements such as surface finishes, electrical and thermal conductivity, anti-fouling, etc. The unique PCT process provides an effective, economical solution to most forms of mechanical erosion, chemical, pitting, crevice, galvanic, and stress corrosion, unmatched by other conventional surface treatments.