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. Mild steel has considerable importance in the field of engineering due to its high strength, good mechanical properties and low cost. However, its application is restricted in some industries where wear failure is considered as major problem. Wear attacks on the moving components from the upper surface, which proves wear is often a surface phenomenon. Many researchers have used the gas tungsten arc (GTA) cladding process to deposit a thick alloy layer, metal matrix composite layer and ceramic composite layer on low carbon steel substrate due to its high deposition efficiency, inexpensive, easy to operate and good performance. The metal matrix composite (MMC) coating makes the components reusable because of the synergetic effect of the combination of hard reinforcement and ductile matrix. Researchers also investigated that the deposition of hard coating synthesized by the in-situ method gives better properties rather than the ex-situ method due to the mismatch of the wetting properties between the various phases of ceramics materials during the ex-situ method. This review paper summarizes the literature related to the GTA cladding on mild steel and its applications. Further, it was also described here about the effect of coating materials, process parameters of GTA cladding on surface properties of mild steel such as resistance to wear, corrosion resistance and hardness. This review paper will provide reference for the researchers working in the GTA cladding area.

Effect of Various Process Parameter of GTA Cladding on Surface Properties of Mild Steel: A Critical Review