Plasma spraying is a thermal spray coating process that uses a high-temperature plasma jet to melt and propel materials onto a surface. This technique is commonly used to apply coatings for wear resistance, thermal insulation, and corrosion protection. The materials, often in powder form, are injected into the plasma jet, where they are heated to a molten state before being sprayed onto the target surface. The process involves generating a plasma arc using argon or helium gases, which creates temperatures exceeding 10,000 degrees Celsius. As the molten particles cool and solidify upon contact, they form a strong bond with the substrate, resulting in a durable coating. Plasma spraying is widely used in industries such as aerospace, automotive, and manufacturing.