Plasma spraying, as utilized by Companion’s, is a technique for enhancing and modifying material surfaces to provide properties such as wear resistance, corrosion resistance, high-temperature oxidation resistance, electrical and thermal insulation, radiation protection, abrasion reduction, and sealing. The process involves using a plasma arc, powered by direct current, to melt ceramics, alloys, and metals, which are then sprayed onto the pre-treated workpiece surface to form a durable surface layer.