Authors:-Â M. Muthukumar, K. Vijaylakshmi
Abstract:-Â A coating is a layer of material deposited on a substrate that improves surface properties such as corrosion and wears resistance. There are numerous coating methods available for depositing many different material types at thicknesses ranging from a few microns to several millimetres. The literature on why the PVD process is appropriate, types of PVD methods, their processes, applications, and challenges have been reviewed in this paper. Many coating processes are available, but they are limited to coating only a few materials. PVD coating technology, also known as green coating technology, is highly focused on environmental protection and covers a wide range of coating materials. Many parameters influence PVD (sputtering process) experimental work, such as coating thickness, sputtering gas, gas flow rate, sputtering power, and so on. Carbon nanotubes (CNTs) are a type of carbon that exists between fullerene and flat graphene sheets. It has a structure made up of carbon atoms arranged in one or more cylindrical layers and joined by covalent bonds in a hexagonal pattern to form a hollow tube. CNTs have a very high tensile strength, wear resistance, and thermal conductivity due to their structure.
Keywords:-Â Green coating technique, Carbon nanotubes (CNT), HSS cutting tool, Coating cutting tool, PVD Sputtering process
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