Abstract
The selection of suitable material having significant property for any structure or a component is an issue for a designer where the material used in fabricating most components is preferred according to their mechanical properties to sustain for various applied loads. Many components, however, fail under either fracture or fatigue loadings which fall below the applied loads before their life expectancy. These loads initiate, propagate and elongate along the cracks, leading to the failure of the component. Protective treatments like coatings are used to enrich the resistance to corrosion and abrasion, improve physical or mechanical properties, or improve the surface finish, improve aesthetic appearance, etc. In various structures in aerospace, automotive, ocean engineering, nuclear power plants, etc., many coated and treated components are used under different service temperatures. Protecting the alloys and metals from damage due to the surrounding medium is the focus of today’s technology. This area of technology for protecting alloys and once considered to be an important field confined to the practical aspects of galvanizing, chromizing, enameling, etc. of certain industrial and household appliances has now gained its practical importance in various fields of engineering and technology which deserves to be treated as an independent aspect of scientific investigation. In this paper, the effect of variable thickness of the copper coating on the plane strain fracture toughness is studied and concluded that the increase or decrease in the fracture toughness of the coated materials depends mainly on the parameters like the coating thickness, the environment under which coating is done, the temperature at which coating process is carried out and the duration of time for which the material is kept under these conditions during coating.
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