Abstract
Thermal spraying techniques are coating processes in which melted or heated materials are sprayed onto a surface [1]. Thermal spray coatings have a wide range of applications, for instance, in repairing machine parts damaged in service or in the production of parts with high wear resistance [2]. 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 [1].The present paper analyze the thermal spray coatings by their structural and microstructural characteristics.
Cuvinte cheie
thermal spray
coatings
microstructure
porosity