Erosion Wear Analysis of Coated and Uncoated Ductile Materials at Different Velocities and Angles

Abstract

Wear is the gradual, layer-by-layer destruction of the surface of metallic materials by mechanical action of erodents,or passage of slurry. The wear of metals occurs upon the frictional rubbing of surfaces, wear, and cavitations, as well as upon the action of strong gas or liquid currents upon a surface, especially at high temperatures and pressures. Various parts of jet engines, nuclear reactors, and steam turbines boilers and pipes in the thermal power plants and cement industries where the pipe carries the slurry were subjected to destruction by erosion. Increased resistance of parts against erosion can be achieved by improving process technology or unit design and by selecting more suitable material; heat treatment also increases resistance against erosion. Structural materials have been developed that provide durable operation of parts under erosive conditions, such as some niobium and molybdenum alloys. In the present work the effect of erosion wear on 18Cr8Ni based steel strip coated with Epoxy polyester and powder coating has been investigated experimentally. Comparison of the erosion resistance and loss of metal for different mass flow rate and angle’s are done.