Physicochemical properties investigations of metallic urological stent after implantation

• Autorzy: Tyrlik-Held J. , Kajzer W. , Walke W. , Szade J. , Winiarski A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the work was to determine the surfaces as well as physicochemical properties changes of the metallic urological stent. The tested stent was made of Co-Cr-Ni-Fe-Mo-Mn alloy and was implanted during four years. Design/methodology/approach: Electrochemical tests have been used for corrosion resistance investigations. They were carried out in the artificial urine solution at the temperature 37 ± 1° C with the use of the VoltaLab ® PGP 201 system. The evaluation of pitting corrosion was realized by recording of anodic polarization curves with the use of the potentiodynamic method. Chemical composition investigations of the surface have been carried out with the use of X-ray Photoelectron Spectroscopy (XPS). The topography of surfaces changes was observed in scanning electron microscope (SEM). Findings: Surface observations haven't showed the signs of pitting corrosion. No decrease of corrosion resistance for metallic material was stated. Furthermore in surface layer the presence of the organic compounds was observed. Practical implications: The time of four years of implantation didn't induce the significant changes in electrochemical properties of metallic material of the tested stent which was in contact with the natural environment of physiological fluids. Originality/value: The results obtained concern to investigations of the metallic material of the stent, which was implanted during the period of four years in human body that mean in natural environment of human tissues and physiological fluids.

Słowa kluczowe

EN

biomaterials; XPS; corrosion resistance

PL

biomateriały; XPS; odporność na korozję

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 27, nr 2
• Strony: 135--138
• Opis fizyczny: Bibliogr. 18 poz., wykr.

Twórcy

autor

Tyrlik-Held J.

autor

Kajzer W.

autor

Walke W.

autor

Szade J.

autor

Winiarski A.

• 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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