Abstract
H11 steel discs were tested by considering sliding/rolling friction under dry and lubricated conditions. The H11 discs were plasma nitrided at 500°C and 550°C for 9h. Wear tests were conducted at different slip ratios of 1.79%, 10.53% and 22.22%. The test loads were 100N, 150N and 200N. It was determined that plasma-nitrided H11 discs had a surface hardness of 1200–1400HV0.1. Plasma nitriding produced wear performance much higher than those of the un-nitrided but hardened samples. The wear mechanism of the plasma-nitrided discs was a mixture of adhesive wear, abrasive wear and plastic yielding.
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