Surface engineering deals with the surface of the solid matter and it is sub-discipline of materials science. Solids are composed of a bulk material covered by a surface and it is called surface phase. The surface phase of a solid interacts with the surrounding environment. This interaction can degrade the surface phase over time, may result in loss of material from its surface. Environmental degradation of the surface phase over time can be caused by wear, corrosion, creep, fatigue loads, shear loads, tensile loads, cutting forces or when exposed to higher temperature. Major types of wear include abrasion, friction, erosion and corrosion. Wear can be minimized by modifying the surface properties of solids by surface finishing or by use of lubricants.