Abstract
XPS analysis of nanolayer formed on AISI 304L SS after High-Voltage Electropolishing (HVEP)
Highlights
Austenitic stainless steels such as AISI 304L and AISI 316L, like the titanium, niobium and their alloys, have been continually used as metallic biomaterials
The Authors present the X-ray Photoelectron Spectroscopy (XPS) analysis of the passive surface layer formed on AISI 304L stainless steel, obtained after this novel High-Voltage Electropolishing
The proposed method is similar to the Plasma Electrolytic Oxidation PEO [27,28,29,30,31,32], which is mostly used for the electrochemical treatment of titanium, niobium, zirconium, tantalum and their alloys
Summary
Austenitic stainless steels such as AISI 304L and AISI 316L, like the titanium, niobium and their alloys, have been continually used as metallic biomaterials. The proposed method is similar to the Plasma Electrolytic Oxidation PEO (known as the Micro Arc Oxidation) [27,28,29,30,31,32], which is mostly used for the electrochemical treatment of titanium, niobium, zirconium, tantalum and their alloys. These materials undergo electropolishing up to about 80 V and plasma is created under higher voltages, say 180 V and above. A micrometer-thick porous layer is formed under these PEO treatments at higher voltages
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