ABSTRACT
Electro-discharge machining, among other nonconventional machining processes, is known for its capability to machine materials regardless of hardness. In addition to its contactless and zero-force nature of machining, this process is reported to contribute to surface alteration and modification. Literature reveals surface modification through powder mixed EDM; modification through electrode materials, modification through electrical discharge (ED) coating process as some of the imperative surface modification techniques that can alter surface microstructure and therefore, enhances its properties such as microhardness, surface finish, wear, and corrosion resistance. This chapter will present a comprehensive discussion on these surface modification practices implemented to improve the functional characteristics of the surface machined by micro-EDM.
