Abstract
1. Spray-deposited steel coatings possess an optimum combination of strength and density, which is responsible for their excellent antifriction properties — a low coefficient of boundary friction (Μ=0.1), good running-in characteristics, low sensitivity to load variation during the friction process, and high resistance to seizure. 2. Plasma-sprayed steel coatings are superior, as regards most of the antifriction properties noted above, to both quenched Type 45 steel and electrometallized steel coatings. 3. Under boundary friction conditions, the wear resistance of plasma-sprayed steel coatings is 1.5 times that of electrometallized steel coatings and is comparable to that of quenched Type 45 steel; at the same time, plasma-sprayed coatings induce less wear in their mating parts.
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