Low-pressure plasma spraying

Low-pressure plasma spraying is a surface technology process that is used to coat surfaces. A plasma consisting of ionized gases is generated and this plasma is used to apply coating materials to the substrate.

The process of low-pressure plasma spraying begins by feeding a gas mixture into a vacuum chamber where it is ionized under low pressure, typically by applying radio frequency energy or microwaves. This creates a plasma consisting of positively charged ions, free electrons and neutral molecules.

The coating material, often in the form of powder, wire or wire sheet, is introduced into the plasma where it is melted and sprayed onto the substrate in the form of fine particles. These particles hit the surface of the substrate and form an even coating.

Low-pressure plasma spraying offers a number of advantages over other coating processes. For example, the low pressure in the plasma enables precise control of the coating thickness and composition. In addition, materials with high melting points and thermal properties can also be applied using this process.

This technology is used in various industries, including automotive, aerospace, power generation and medical technology. Applications include the coating of engine components, turbine blades, seals and medical implants. Overall, low-pressure plasma spraying is a versatile and effective surface engineering process that enables high-quality coatings with improved properties on a wide range of substrates.