Physicochemical properties of passive layer on the surface of guide wire used in endourology

The main criterion for austenitic steel X2CrNiMo 17-12-2 suitability for guide wire in endourology is its biotolerance. It is most of all connected with physical and chemical properties of wire surface, which should be adjusted to the characteristics of the environment of human urinary system tissue...

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Bibliographic Details
Published inMetalurgija Vol. 50; no. 3; pp. 201 - 204
Main Authors W. Walke, J. Przondziono
Format Journal Article
LanguageEnglish
Published Croatian Metallurgical Society 01.07.2011
Subjects
artificial urine
corrosion resistance
passive layer
X2CrNiMo 17-12-2 steel
XPS
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Summary:The main criterion for austenitic steel X2CrNiMo 17-12-2 suitability for guide wire in endourology is its biotolerance. It is most of all connected with physical and chemical properties of wire surface, which should be adjusted to the characteristics of the environment of human urinary system tissues. Suitability of the proposed passive layer for purification of wire surface was determined to a great extent by its chemical composition. Therefore, this study included chemical composition tests by means of X-ray Photoelectron Spectroscopy (XPS), during which atomic concentration of elements in tested passive layers was identified and determined. Resistance to pitting corrosion was evaluated on the ground registered anodic polarisation curves by means of potentiodynamic method.
ISSN:0543-5846
1334-2576