THE EFFECT OF HEAT TREATMENT ON THE MICROSTRUCTURE AND PROPERTIES OF THE CORROSION RESISTANCE OF THE PROSTHETIC ALLOY WIRONIT EXTRAHART (Co-Cr-Mo)

Joanna Augustyn-Nadzieja, Sylwia Pełka, Joanna Loch-Zawrotniak

Abstract


The presented study performs an analysis of the effect of thermal treatment on the microstructure and corrosion resistance of the commercial prosthetic alloy Wironit ExtraHart (Co-Cr-Mo). Experiments of thermal treatment, homogenization, oversaturation as well as oversaturation with ageing of the alloys were carried out. Metallographic tests, hardness measurements, EDS analyses and electrochemical investigations were performed. For the examined samples, the corrosion potential (OCP) and polarization curve (LSV) were determined, based on which the corrosion properties in the simulated solution of artificial saliva were established. The results of the obtained tests made it possible to evaluate the effect of the performed thermal treatment on the changes in the properties (hardness) as well as the microstructure and corrosion resistance of the examined alloy Co-Cr-Mo.

Keywords


Co-Cr-Mo alloys; heat treatment; dendritic microstructure; corrosion resistance

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References


Górny Z.: Odlewnicze stopy kobaltu. Instytut Odlewnictwa, Kraków 2008

Augustyn-Pieniążek J., Kurtyka P., Sulima I., Stopka J.: Selected properties and tribological wear alloys Co-Cr-Mo and Co-Cr-Mo-W used in dental prosthetics. Archives of Metallurgy and Materials, 60, 3A (2015), 1569–1574

Surowska B., Beer K., Borowicz J., Veremchuk I.: Wpływ technologii odlewania na jakość stomatologicznego stopu kobaltu. Postępy Nauki i Techniki 11 (2011), 81–88

Augustyn-Pieniążek J., Wilkosz K.: Qualitative assessment of the defects in metal casting prosthetic restorations. Archives of Foundry Engineering, 14, 4 (2014), 7–12

Kajima Y., Takaichi A., Kittikundecha N., Nakamoto T., Kimura T., Nomura N., Kawasaki A., Hanawa T., Takahashi H., Wakabayashi N.: Effect of heat-treatment temperature on microstructures and mechanical properties of Co-Cr-Mo alloys fabricated by selective laser melting. Materials Science and Engineering: A, 726 (2018), 21–31

Minciuña M.G., Vizureanu P., Achitei D.C., Ghiban N.: Structural characterization of some CoCrMo alloys with medical applications. Revista de Chimie (Bucharest), 65, 3 (2014), 335

Clemow A.J.T., Daniell B.L.: Solution treatment behavior of Co-Cr-Mo alloy. Journal of Biomedical Materials Research, 13, 2 (1979), 265–279

https://usa.bego.com/fileadmin/BEGO-USA/user_downloads/MediaLibrary/Conventional-Solutions/Alloys/Wironit-Extrahard/de_14071_0016_ga_en.pdf [8.10.2018]

ISO 10271:2001 Dental metallic materials – Corrosion test mesthods (2001)

Dobbs H.S., Robertson J.L.M.: Heat treatment of cast Co-Cr-Mo for orthopaedic implant use. Journal of Materials Science, 18, 2 (1983), 391–401

Surowska B.: Biomateriały metalowe oraz połączenia metal-ceramika w zastosowaniach stomatologicznych. Wydawnictwo Politechniki Lubelskiej, Lublin 2009

Łukaszczyk A., Augustyn-Pieniążek J.: Corrosion resistance of Co-Cr-Mo alloy used in dentistry. Archives of Metallurgy and Materials 60, 1 (2015), 523–528

Giacchi J.V., Morando C.N., Fornaro O., Palacio H.A.: Microstructural characterization of as-cast biocompatible Co-Cr-Mo alloys. Materials Characterization, 62, 1 (2011), 53–61

Loch J., Krzykała A., Łukaszczyk A., Augustyn-Pieniążek J.: Corrosion resistance and microstructure of recasting cobalt alloys used in dental prosthetic. Archives of Foundry Engineering, 17, 2 (2017), 63–68

Lashgari H.R., Zangeneh S., Hasanabadi F., Saghafi M.: Microstructural evolution during isothermal aging and strain-induced transformation followed by isothermal aging in Co-Cr-Mo-C alloy: A comparative study. Materials Science and Engineering: A, 527,16–17 (2010), 4082–4091

Mineta S., Namba S., Yoneda T., Ueda K.: Carbide formation and dissolution in biomedical Co-Cr-Mo alloys with different carbon contents during solution treatment. Metallurgical and materials transactions A, 41, 8 (2010), 212–2138

Milošev I., Strehblow H.-H.: The composition of the surface passive film formed on CoCrMo alloy in simulated physiological solution. Electrochimica Acta, 48, 19 (2003), 2767–2774

Vidal C.V., Muñoz A.I.: Study of the adsorption process of bovine serum albumin on passivated surfaces of CoCrMo biomedical alloy. Electrochimica Acta, 55, 28 (2010), 8445–452

Hodgson A.W.E., Kurz S., Virtanen S., Fervel V., Olsson C.-O.A., Mischler S.: Passive and transpassive behaviour of CoCrMo in simulated biological solutions. Electrochimica Acta, 49, 13 (2004), 2167–2178




DOI: https://doi.org/10.7494/mafe.2018.44.4.181

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