Effect of Laser Parameters on the Corrosion Resistance of the ASTM F139 Stainless Steel

摘要

The investigation on the corrosion resistance of biomaterials and the effects of manufacturingprocesses, including marking for traceability, is extremely important to evaluate whether the surfacemodification caused by marking affects the properties of the biomaterial. The engraving process bylaser beam has been used to ensure the identification and traceability of orthopedic implants. Thisstudy evaluates the influence of the laser marking parameters, specifically the pulse energy andengraving rate, on the corrosion resistance of the ASTM F139 austenitic stainless steel, after engravingwith Nd: YAG laser beam by means of electrochemical methods. The electrolyte used was a phosphatebuffered solution, with pH 7.4, and 37 C. The results showed that the laser marking parameters affectthe protective properties of the passive film and influence the susceptibility to corrosion of thisbiomaterial.