Plasma spray coating is the sprinkling of heat or molten softened material on a surface to give the right coating layer. The material begins in the form of powder and is injected into a high-temperature flame, where it is quickly heated and increased to a high velocity. The role of this hot material is it adheres to the surface and quickly cools to form a coating.
When properly executed, this process is referred to as the “cold process” as the substrate temperature will be kept low throughout to avoid certain damages, distortion to the substrate material, and metallurgical changes. This method is commonly used in ordinary atmospheric conditions and is known as the APS. The sprayed coatings in APS are much stronger, cleaner, and denser.
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