Metallurgy, Vol. 50 No. 3, 2011.
Preliminary communication
Physicochemical properties of passive layer on the surface of guide wire used in endourology
W. Walke
; Faculty Of Mechanical Engineering, The Silesian University of Technology, Gliwice, Poland
J. Przondziono
; Faculty of Materials Science and Metallurgy, The Silesian University of Technology, Katowice, Poland
Abstract
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.
Keywords
X2CrNiMo 17-12-2 steel; passive layer; artificial urine; corrosion resistance; XPS
Hrčak ID:
64385
URI
Publication date:
1.7.2011.
Visits: 1.136 *