Comparative evaluation of dry sliding wear behaviour of plasma transferred arc hardfaced surfaces by the pin-on-roller method

Abstract

Dry sliding wear occurs when two bodies are in sliding contact. During the process of sliding, fragments may be pulled out from one surface and they may stick on to the other. Later on, these may get transferred back or may become loose wear particles. This article reports the effects of different experimental conditions on the dry sliding wear behaviour of iron-based alloy (stainless steel), cobalt-based alloy (stellite), and nickel-based alloy (colmonoy) surfaces produced by the plasma transferred arc hardfacing process. The wear test was conducted using a pin-on-roller wear testing machine. The dry sliding wear behaviour of the hardfaced surfaces was compared and it was found that the wear resistance of nickel-based alloy is 5 times higher than the base metal. Similarly, cobalt-based alloy exhibits 3 times higher wear resistance and iron-based alloy shows 1.5 times higher wear resistance compared to base metal.