Laser glazing of sprayed metal coatings

Abstract

The outer portion of a plasma sprayed, metal film 50 μm thick has been fused by means of laser scanning. The porosity of the film is thus sealed while the high‐power density and rapid quench rates characteristic of laser melting preclude solid solution or compound formation at the film‐substrate interface. The corrosion resistant properties of metals such as titanium may thus be economically imparted to a variety of substrates.