Title: Corrosion resistance of Cr-Ni-Mo steel intended for urological stents

Authors: W. Kajzer, W. Chrzanowski, J. Marciniak

Addresses: Division of Structural and Special Materials Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44–100 Gliwice, Poland. ' Division of Structural and Special Materials Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44–100 Gliwice, Poland. ' Division of Structural and Special Materials Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44–100 Gliwice, Poland

Abstract: This work presents the influence of the surface treatment and plastic strain of Cr-Ni-Mo stainless steel, intended for implants applied in urogenital surgery, on the steel|s corrosion resistance. Tests were carried out in simulated urine at a temperature of 37 ± 1°C and pH = 6–6,4. In particular, pitting and crevice corrosion resistance tests were carried out. Furthermore, through the applied technique of stent implantation, the deformability of the passive layer was evaluated. The deformability tests of the passive layer were carried out with the use of a bend test followed by a corrosion test.

Keywords: pitting corrosion; crevice corrosion; biomaterials; urological stents; artificial urine; corrosion resistance; stainless steel; surface treatment; plastic strain; implants; urogenital surgery; biomedical engineering; materials properties; deformation.

DOI: 10.1504/IJMMP.2007.014285

International Journal of Microstructure and Materials Properties, 2007 Vol.2 No.2, pp.188 - 201

Published online: 30 Jun 2007 *

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