To use all functions of this page, please activate cookies in your browser.
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
Thermal Spray techniques are coating processes which involve spraying melted (or heated) materials onto a surface. As such thermal spraying is a line-of-sight process. The energy to heat the feedstock (coating precursor) is supplied by electrical (plasma or arc) or chemical means (combustion flame). Coating thicknesses range between approximately 20 micrometers (μm) and several millimetres (mm) depending on the process and feedstock.
Additional recommended knowledge
The materials to be deposited as the coating are typically fed into the spray gun in powder or wire form where they may be atomized before being accelerated towards the substrate, or material to be coated. "As the sprayed particles impinge upon the surface, they cool and build up, splat by splat, into a laminar structure forming the thermal spray coating."
Coating quality is usually assessed by measuring its porosity, oxide content, macro and microhardness, bond strength and surface roughness. Generally, the coating quality increases with increasing particle velocities.
Spray coatings may either be applied manually or by machine, depending on complexity, cost, and environmental and safety concerns.
Some common reasons for spray coating are:
Some common types of thermal spray are:
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Thermal_spray". A list of authors is available in Wikipedia.|