Thermal spray

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.