What is plasma spray coating used for?
Plasma spraying is used to apply ceramic, cermet and metal coatings in several industry sectors. These coatings are designed to provide wear and corrosion protection, or to give functional properties such as thermal insulation or biocompatibility.
What is thermal spray Equipment?
Thermal spraying is a technology which improves or restores the surface of a solid material. The process can be used to apply coatings to a wide range of materials and components, to provide resistance to: Wear, erosion, cavitation, corrosion, abrasion or heat.
What is plasma arc spraying?
Plasma spraying is a coating process in which powders of the coating materials are fed into the plasma jet at around 10 000K, at which the coating materials melt and are sprayed over the substrate to be coated.
What are the requirements for plasma spray coating?
Ceramic plasma spray coatings provide: High Temperature Resistance. Extreme Wear Resistance. Inert Chemical Resistance….Availability of Materials Makes Plasma Coating a Versatile Process
- Aluminum Oxide.
- Chrome Oxide.
- Zirconium Oxide.
- and others.
What is thermal spray process?
Thermal spraying is an industrial coating process that consists of a heat source (flame or other) and a coating material in a powder or wire form which is literally melted into tiny droplets and sprayed onto surfaces at high velocity.
How does plasma thermal spray work?
Plasma spray coatings are applied using a high temperature process that involves injecting powdered coating material into a plasma flame. The material is rapidly heated and then accelerated toward the substrate. Once it reaches the surface it begins to cool, forming a hard coating on the substrate.
Is a transferred arc is used for plasma spraying?
The plasma jet is formed by a transferred arc between a non-consumable cathode and the wire. After atomization, forced gas transports the stream of molten droplets onto the bore wall. The particles flatten when they impinge on the surface of the substrate, due to their high kinetic energy.
How thermal spraying is done?
Thermal spraying techniques are coating processes in which melted (or heated) materials are sprayed onto a surface. The “feedstock” (coating precursor) is heated by electrical (plasma or arc) or chemical means (combustion flame).