Institute of Metals and Technology, Ljubljana, Slovenia.
J Biomed Mater Res B Appl Biomater. 2012 Apr;100(3):799-807. doi: 10.1002/jbm.b.32513. Epub 2012 Feb 14.
A study of oxide layers grown on 2205 duplex stainless steel (DSS) and AISI 316L austenitic stainless steel in simulated physiological solution is presented here in order to establish the possibility of replacement of AISI 316 L with 2205 DSS in biomedical applications. The results of the potentiodynamic measurements show that the extent of the passive range significantly increased for DSS 2205 compared to AISI 316L stainless steel. Cyclic voltammetry was used to investigate electrochemical processes taking place on the steel surfaces. Oxide layers formed by electrochemical oxidation at different oxidation potentials were studied by X-ray photoelectron spectroscopy, and their compositions were analyzed as a function of depth. The main constituents on both the investigated materials were Cr- and Fe-oxides. Atomic force microscopy topography studies revealed the higher corrosion resistance of the DSS 2205 compared to the AISI 316L under the chosen experimental conditions.
本文研究了在模拟生理溶液中生长在 2205 双相不锈钢（DSS）和 AISI 316L 奥氏体不锈钢上的氧化层，以期确定在生物医学应用中用 2205 DSS 替代 AISI 316L 的可能性。动电位测量的结果表明，与 AISI 316L 不锈钢相比，DSS 2205 的钝化范围显著增加。循环伏安法用于研究钢表面发生的电化学过程。通过 X 射线光电子能谱研究了在不同氧化电位下通过电化学氧化形成的氧化层，并分析了它们的组成随深度的变化。在这两种研究材料上的主要成分都是 Cr 和 Fe 氧化物。原子力显微镜形貌研究表明，在所选实验条件下，DSS 2205 的耐腐蚀性高于 AISI 316L。
