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In this research, medical grade 316L stainless steel plate was treated by using surface mechanical attrition treatment (SMAT) and electropolishing (EP) to achieve a hard and smooth surface, as required for osteosynthesis plates for bone fracture reconstruction. Surface morphology, roughness and wettability of the plate after a series of treatments by using the SMAT and EP were then characterised, and the results were compared with the surface properties of osteosynthesis plate reported in the literature. The result of this research showed that the SMAT could increase the hardness of the surface and subsurface layer of the plate but could not produce a smooth surface as required for an osteosynthesis plate. Meanwhile, such a smooth surface could be achieved after the EP. With this treatment, surface hydrophobicity of the stainless steel also slightly increased, but with no surface hardening effect such as shown by the SMAT. To deal with this conflicting situation, EP was applied after SMAT to produce stainless steel plate with a smooth and hard surface.

journal of physical science

Surface Morphology, Roughness and Wettability of the Medical Grade 316L Stainless Steel Processed with Surface Mechanical Attrition Treatment and Electropolishing for the Preparation of Osteosynthesis Plate