Corrosion resistance of Cr-Ni-Mo steel after sterilization process

• Autorzy: Marciniak J. , Tyrlik-Held J. , Walke W. , Paszenda Z.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the work was to evaluate how the process of high pressure steam sterilization influences the pitting corrosion resistance of Cr-Ni-Mo steel used for implants production. Design/methodology/approach: Surfaces of samples were prepared by electrolytic polishing and chemical passivation. Samples were sterilized in steam with the use of different parameters of temperature, pressure and time. Corrosion resistance investigations were carried out with the use of potentiodynamic method. The test were realized in solution simulating human blood environment (artificial plasma) at the temperature of 37 ± 1 °C and pH=7.2. Parameters describing the corrosion resistance have been determined on the basis of analysis of anodic polarization curves. Findings: High pressure steam sterilization process improves all parameters relating to pitting corrosion resistance of Cr-Ni-Mo implantation steel that is: corrosion potential Ecorr, breakdown potential Eb, polarization resistance Rp, corrosion current density icorr and corrosion rate. The increase of sterilization time for constant parameters of temperature and pressure of steam was the important factor which improved significantly the corrosion resistance of tested samples. Research limitations/implications: Further investigations of chemical composition of the layers formed during sterilization process are planed. Originality/value: The obtained results show the advantageous influence of passivation and high pressure steam sterilization on the pitting corrosion resistance of Cr-Ni-Mo steel in solution simulating human blood environment (artificial plasma).

Słowa kluczowe

EN

corrosion; biomaterials; steam sterilization

PL

korozja; biomateriały; sterylizacja parą wodną

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 5
• Strony: 289--292
• Opis fizyczny: Bibliogr. 17 poz., wykr.

Twórcy

autor

Marciniak J.

autor

Tyrlik-Held J.

autor

Walke W.

autor

Paszenda Z.

• Division of Biomedical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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• [3] J. Marciniak, et al., Stents in minimalny invasive surgery. Printing House of the Silesian University of Technology, Gliwice, 2006 (in Polish).
• [4] Z. Paszenda, J. Tyrlik-Held: Surgical Instruments. Printing House of the Silesian University of Technology, Gliwice, 2003, (in Polish).
• [5] J. Marciniak, W. Chrzanowski, A. Krauze, Intrame-dullary nailing in osteosynthesis. Printing House of the Silesian University of Technology, Gliwice 2006.
• [6] J. Marciniak, Biomaterials. Printing House of the Silesian University of Technology, Gliwice 2002.
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• [14] PN-EN 554:1999, Sterylization of medical products (in Polish).
• [15] PN-ISO 5832-1:1997 Implants for Surgery. Metallic materials. Wrought stainless steel (in Polish).
• [16] ASTM G 48-03, Pitting and crevice Corrosion resistance of stainless Steels, USA 2003.
• [17] PN-EN ISO 10993-15, Biological evaluation of medical products (in Polish).