Recent Advancements in Surface Modification by Gas Tungsten Arc Cladding Technique: A Review

A technique of surface modification used to produce thick coatings with enhanced surface characteristics by developing highly resistive layers on the substrate is known as cladding. It plays a great role to increase the service life of industrial elements. It is broadly applied in chemical, mining, nuclear, power generation, and marine industries. There were a lot of studies done targeting Gas Tungsten Arc Cladding because of its advantages such as user-friendly, low cost, high deposition rate, low dilution, high reliability, etc. The four key features added to the substrate after claddings are dilution of a substrate, microstructure, microhardness, and tribological properties. Considering these features, the current article presents an overview of the Gas Tungsten Arc Cladding technique. The key goal is to reflect on the investigations conducted in the previous decade based on the wear, oxidation, and corrosion performance of cladding surfaces and their key observations. In addition, the effects of Gas Tungsten Arc Cladding process parameters, the substrate-clad materials combination, microstructural improvements, common advantages, and limitations associated with the technique are also presented. New research and industrial people on weld cladding would benefit from the outcomes of this article.