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PLASMA ARC SPRAYING • Plasma spraying is part of thermal spraying, a group of processes in which finely divided metallic and non-metallic materials are deposited in a molten or semi-molten state on a prepared substrate. • Powered materials are injected within the plasma jet (dc arcs) where partcles are accelerated and melted, or partally melted, before they faten and solidify onto the substrate The following powders are used in plasma spraying 1. Zirconium oxide 2. Uranium oxide 3. Titanium carbide 4. Zirconium carbide 5. Tit