Studies on the Sliding Wear Performance of Plasma Spray Ni-20Cr and Ni₃Al Coatings

In this study, two metallic powders, Ni-20Cr and Ni3Al, were plasma sprayed on stainless steel substrates in order to compare their sliding wear properties. The coatings exhibited typical splat morphology prior to wear testing. After wear testing, the coatings were again examined along with an uncoated substrate. It was concluded that although either coating can effectively reduce the wear rate of 309 stainless steel, the Ni3Al coating is a better choice.