Quantitative Study of Magnetic, Physical Properties And Microstructural Composition of Tungsten Carbide

Abstract

Tungsten Carbide is a hard and dense material with very high rigidity. The density is about 15.0g/cm3 with thermal conductivity of 110w/moc and coefficient of thermal expansion of 6.2µm-1K-1. The melting and decomposition point is about 2,560oc and boiling point of 6,200oc. It is hardness varies with WC grain size and co content. The poisson’s ratio is 0.31 and the compressive strength at 20oc is about 6200N/mm2 with young’s modulus ranging from 400 to 630 GPa. Tungsten Carbide is slightly magnetic and as an alloy, the magnetic property depends upon either mixed with cobalt or nicked. It is combination with other metals as an alloy make it so strong and durable as well as shiny and expensive looking. Tungsten Carbide is prepared by heating powered Tungsten with carbon black in the presence of hydrogen at 1600oc (2,900oF). Tungsten Carbide is an important material for metal machining, rock drilling, coal cutting, metal mixing and oil drilling due to an excellent combination of hardners, strength, wear resistance and fracture toughness.