Influence of electrolytic polishing on electrochemical behaviour of austenitic steel

• Autorzy: Baron, A. , Simka, W. , Nawrat, G. , Szewieczek, D. , Krzyżak, A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper deals with investigations on the influence of the parameters of the electrochemical treatment of austenitic steel on their electrochemical behaviour in Tyrod solution. Design/methodology/approach: Electrochemical investigations concerning the corrosion resistance of austenitic steel samples were carried out by means of the potentiodynamic and elektrochemical impedance spectroscopy method. Findings: The analysis of the obtained results leads to the conclusion that chemical passivation affects also the chemical composition of the passive layer of steel and changes its resistance to corrosion. Electrolytic polishing improves corrosion resistance, as can be proved by the shift of the value of the corrosion potential and breakdown potential of the passive layer and the initiation of pittings. Practical implications: In result of the presented investigations it has been found that the best corrosion resistance can be achieved thanks to the application of electrolytic polishing of the steel in a special bath and chemical passivation in nitric (V) acid with an addition of chromic (VI) acid temperature t = 60°C for one hour. Originality/value: The enormous demand for metal implants has given rise to a search for cheap materials with a good biotolerance and resistance to corrosion. Most commonly used are steel implants assigned to remain in the organism for some limited time only. It was compare two electrochemical methods: potentiodynamic polarization and electrochemical impedance spectroscopy.

Słowa kluczowe

PL

biomateriały; korozja; obróbka powierzchniowa; EIS

EN

biomaterials; corrosion; surface treatment; EIS

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 55--58
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Baron, A.

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

autor

Simka, W.

• Department of Chemistry and Inorganic Technology, Silesian University of Technology, ul. B. Krzywoustego 6, 44-100 Gliwice, Poland

autor

Nawrat, G.

• Department of Chemistry and Inorganic Technology, Silesian University of Technology, ul. B. Krzywoustego 6, 44-100 Gliwice, Poland

autor

Szewieczek, D.

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

autor

Krzyżak, A.

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

Bibliografia

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• [2] D. Wallinder, J. Pan, C. Leygraf, A. Delblanc-Bauer: “Electrochemical investigation of pickled and polished 304L stainless steel tubes”, Corrosion Science 41 (1999) 275-289
• [3] I. Ozbek, B.A. Kondukb, C. Bindala, A.H. Ucisik: Characterization of borided AISI 316L stainless steel implant: Vacuum 65 (2002) 521–525
• [4] G. Nawrat., Research on the electropolishing methods of stainless steel, doctoral dissertation in Polish, Gliwice, Poland, (1980), (in Polish)
• [5] J. Marciniak , G. Nawrat , A. Korczyński, J. Czernie: Electropolishing and passivating methods of Cr-Ni-Mo steel, polish patent no 153 639, (1991)
• [6] G. Nawrat., J. Marciniak, Z. Paszenda, A. Korczyński: “Electrolytic surface processing of implants used in surgery”, Polish Journal of Applied Chemistry, (1995), 39, 3, 477-480
• [7] J. Marciniak, Biomaterials in bone surgery, edited by Silesian University of Technology, Gliwice (1992), (in Polish)
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• [9] J. Marciniak: Biomaterials, Edited by Silesian University of Technology, Gliwice (2002) (in Polish)
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• [11] A. Krauze, A. Ziębowicz, J. Marciniak: Journal of Materials Processing and Technology 162-163 (2005) 209-212
• [12] A. Baron: Electrochemical corrosion of amorphous and nanocrystalline Fe78Si9B13 and Fe73,5Si13,5B9Nb9Cu1 alloys: doctoral desirtation in Polish, Gliwice, Poland, (2004) (in Polish)
• [13] A. Baron, D. Szewieczek, G. Nawrat: Proceedings of the 11th Scientific Conference on Materials, Mechanical and Manufacturing Engineer’05, Gliwice-Zakopane 2005,
• [14] C. Gabrielli: Identification of Electrochemical Processes by Frequency Response, Report no.004/83, France, 1998