Move to a new phase | New, views and much more, Unlike other types of coatings, Plasma spray coating needs a great deal of safety and a controlled environment. It is not easy to achieve the environment required for this procedure. A high voltage electric arc is used in a plasma spray coating. Image credit The warm cycle makes the coating by showering material as a powder into a 14,000 K plasma fire. The material quickens because of the extraordinary warmth and shows desirable effects on a substrate material. Uses of plasma sprays: Automotive.