The Effect of Morphology and Particle-Size Distribution of VT20 Titanium Alloy Powders on the Mechanical Properties of Deposited Coatings

The surface morphology of coatings produced from spherical and nonspherical VT20 titanium alloy powders with different particle-size distributions has been studied. The microhardness and plasticity of the coatings have been determined. The coatings deposited with nonspherical powders are characterized by a fine-grained structure and their micromechanical properties are comparable to those of the coatings deposited with spherical powders. The coatings deposited with the powders of the –160+40 μm fraction show an optimum ratio of microhardness, plasticity, and yield stress, regardless of their structural morphology.