Abstract
Electrical discharge machining (EDM) is a non-conventional process to machine electrically conductive materials with high hardness properties. Significant amount of heat is generated between tool electrode and workpiece because of discontinuous but rapid electric sparks in the EDM process. Despite the fact that EDM is used to machine hard-to-cut materials, both the workpiece and the tool electrode experience significant erosion. Materials from the tool electrode along with dielectric fluid melt, evaporate, and migrate to the EDMed surface. This phenomenon is almost inexorable resulting in contamination of the machined surface with other constituents. However, numerous studies have been conducted to find out the brighter side of this phenomenon. Some recent studies showed that the corrosion and wear resistance along with cell adhesion and cell proliferation of the EDMed surface improve due to the migration of targeted constituents, thus enhancing the probability of improving biocompatibility. This chapter focuses on the biomedical applications of implant materials surfaces generated by the EDM process. The chapter starts with an introduction to the biomaterials, material removal mechanism and types of EDM. After that, a discussion is included on how the surface modification happens during EDM. The goals as well as overview of this chapter are discussed in the first section of the chapter. In the subsequent section, the effects of different EDM processes on machining biomaterials are discussed. The real-world applications of EDM in the biomedical industry are also delineated. Finally, the chapter ends with providing suggestions on future research directions on the application of EDM for machining implant materials and the scope of EDM in the biomedical field.
Published Version
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