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Research progress of additive hybrid EDM: current situation and Prospect of surface modification of biomedical implants

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Document pages: 23 pages

Abstract: Surface treatment is still the key solution to many problems in the synthesis of hard tissues. The basic methods of implant surface modification include various physical and chemical deposition techniques. However, most of these technologies have some disadvantages, such as high cost, surface cracks and the need for very high sintering temperature. Additive hybrid EDM (am-edm) is a new machining and surface modification technology. In addition to mold, mold and tool manufacturing, am-edm also realizes the finishing of automotive, aerospace, nuclear and biomedical components through the concept of material migration. The material transfer mechanism of am-edm is similar to electrophoretic deposition, soitives in the AM-EDM dielectric fluids are melted and migrate to the machined surface, forming a mirror-like finishing characterized by extremely hard, nanostructured, and nanoporous layers. These layers promote the bone in-growth and strengthen the cell adhesion. Implant shaping and surface treatment through AM-EDM are becoming a key research focus in recent years. This paper reports and summarizes the current advancement of AM-EDM as a potential tool for orthopedic and dental implant fabrication. Towards the end of this paper, the current challenges and future research trends are highlighted.

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