Wear mechanical and corrosion behaviour of copper fly ash tungsten hybrid composites

Abstract

Copper is one of the important nonferrous metal that has been usedwidely in various industries such as heat exchangers, microelectronics, waterdistribution networks, materials for nozzles of gas turbines, contact breakersand neutron target materials, liners of combustion chamber walls and alsoemployed highly for sculptures, monuments, outdoor decorative buildingmaterials etc. The above application requires properties like good wearresistance, corrosion resistance, good strength, hardness, porosity, goodthermalconductivity etc. . Pure copper failed because of its poor wearresistance, soft and ductility. Hence copper based composite materials areevolved with different fabrication and processing techniques. Each method offabrication or processing or reinforcement in copper has certain advantagesand disadvantages. Another important aspect of which industries look for theabove said application is the amount of reduction in weight and its cost withan appropriate strength, wear, hardness, and its related properties etc. Thereduction in cost and weight of the material also depends on the density of thereinforcing material and its cost. One such reinforcement material that has alow density and cheaper is Fly ash (FA) which is a residue obtained byburning coal. Many developing countries are utilizing coal as the main sourceof energy for producing electricity. In India, the Gazette, Ministry ofEnvironment and Climate Change (MoECC), India. has published anotification on 27th January 2016 that all the coal based power plants have toutilize the FA by 100 % which is produced by them. Hence many industriesstarted to utilize the FA in various sectors. newline