Mechanical Properties and Microstructure of Plasma Sprayed Ni-Based Metallic Glass Coating

Abstract

Various developmental research works on the metallic glass have been conducted in order to broaden its application field. Thermal spraying method is one of the potential techniques to enhance the excellent properties such as high toughness and corrosion resistance of the metallic glass material. The gas tunnel type plasma spraying is useful to obtain high quality ceramic coatings such as Al2O3 and ZrO2 coatings. In this study, the Ni‐based metallic glass coatings were produced by the gas tunnel type plasma spraying under various experimental conditions, and their microstructure and mechanical properties were investigated. At the plasma current of 200–300 A, the Ni‐based metallic glass coatings of more than 200 μm in thickness were formed densely with Vickers hardness of about Hv = 600.