Influence of Cr and Co on hardness and corrosion resistance CoCrMo alloys used on dentures

• Autorzy: Dobrzański L. A. , Reimann Ł.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The goal of the study is to try find the relationship between cobalt content on hardness and chromium content on corrosion resistance on the basis of base cobalt alloys CoCrMo used in prosthodontia. Design/methodology/approach: To investigation was choose five base cobalt alloys with different concentration of cobalt and additions. Hardness test were obtained by use the microhardness FM ARS 9000 FUTURE TECH with load 1 kg. Structure observation was made after surface preparation by light microscope LEICA MEF4A with the magnification range 100-1000x. Corrosion resistance test were carried out at room temperature and use of the VoltaLab® PGP201 system for electrochemical tests. The examination were made in water center which simulated artificial saliva environment. The evaluation of pitting corrosion was realized by recording of anodic polarization curves with use the potentiodynamic methods. Findings: The cobalt content in CoCrMo alloys in one of the possible parameters which influence on hardness. The highest value of hardness were obtain for alloy with the highest Co content. All of the research alloys characterized dendritic crystals in structure. Chromium content in one of the most important factor which influence on corrosion resistance, due to that alloy with the highest Cr content characterized the higher repassivation potential. Practical implications: Research materials are used on dentures so it’s demand that their characterized corrosion resistance and result of this work make up an information on what element should be pay attention in chemical composition of CoCrMo alloys. Originality/value: The paper present influence of chemical composition especially cobalt and chromium, on the most important criteria CoCrMo alloys use on dentures.

Słowa kluczowe

EN

biomaterials; corrosion; Co-Cr-Mo alloys; prosthodontia

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 49, nr 2
• Strony: 193--199
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Dobrzański L. A.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Reimann Ł.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] S.H. Tuna, N.Ö. Pekmez, F. Keyf, F. Canli, The influence of the pure metal components of four different casting alloys on the electrochemical properties of the alloys, Dental Materials 25/9 (2009) 1096-1103.
• [2] J. Supady, Types of tooth fillings used in dental treatment in 19th century, Journal of Stomatology 63/4 (2010) 273-281 (in Polish).
• [3] Ł. Reimann, L.A. Dobrzański, Microstructure and hardness of base coblat alloys used in dentistry engineering, Works of XXXIX Materials Engineering School, Monograph (editor: J. Pacyna), Krakov - Krynica (2011) 198-202 (in Polish).
• [4] J.C. Wataha, Alloys for prosthodontic restorations, Journal of Prosthetic Dentistry 87/4 (2002) 351-363.
• [5] J. Qiu, Wei Yu., Fu Zhang, Effects of the porcelain-fused-to-metal firing process on the surface and corrosion of two Co-Cr dental alloys, Journal of Materials Science 46/5 (2011) 1359-1368.
• [6] J.C. Wataha, Biocompatibility of dental casting alloys, A review, The Journal of Prosthetic Dentistry 83/2 (2000) 223-234.
• [7] L.A. Dobrzański, Metallography of non ferrous metals alloys, The Silesian University of Technology Publishing, Gliwice, 2007 (in Polish).
• [8] D.M. Sarantopoulos, K.A. Beck, R. Holsen, D. W. Berzins, Corrosion of CoCr and NiCr dental alloys alloyed with palladium, The Journal of Prosthetic Dentistry 105/1 (2011) 35-43.
• [9] J.C. Setcos, A. Babaei-Mahani, L.D. Silvio, I.A. Mjor, N.H.F. Wilson, The safety of nickel containing dental alloys, Dental Materials 22/2 (2006) 1163-1168.
• [10] V.S. Saji, H.C. Choe, Preferential dissolution behaviour in Ni-Cr dental cast alloy, Bulletin of Materials Science 33/4 (2010) 463-468.
• [11] M. Sharma, A.V. Ramesh Kumar, N. Singh, N. Adya, B. Saluja, Electrochemical corrosion behavior of dental/implant alloys in artificial saliva, Journal of Materials Engineering and Performance 17/5 (2008) 695-701.
• [12] W. Walke, Z. Paszenda, J. Tyrlik-Held, Corrosion resistance and chemical composition investigations of passive layer on the implants surface of Co-Cr-W-Ni alloy, Journal of Achievements in Materials and Manufacturing Engineering 16/1-2 (2006) 74-79.
• [13] L.A. Dobrzański, A.J. Nowak, W. Błażejewski, R. Rybczyński, Non-standard test methods for long-fibrous reinforced composite materials, Archives of Materials Science and Engineering 47/1 (2011) 5-10.
• [14] M. Kiel, A. Krauze, J. Marciniak, Corrosion resistance of metallic implants used in bone surgery, Archives of Materials Science and Engineering 30/2 (2008) 77-80.
• [15] D. Mareci, D. Sutiman, A. Cailean, G. Bolat, Comparative corrosion study of Ag-Pd and Co-Cr alloys used in dental applications, Bulletin of Materials Science 33/4 (2010) 491-500.
• [16] A. Włodarczyk-Fligier, M. Adamiak., L.A. Dobrzański, Corrosion resistance of the sintered composite materials with the EN AW-AlCu4Mg1(a) alloy matrix reinforced with ceramic particles Journal of Achievements in Materials and Manufacturing Engineering, 42/1-2 (2010) 120-126.
• [17] A. Kurc, M. Kciuk, M. Basiaga, Influence of cold rolling on the corrosion resistance of austenitic steel, Journal of Achievements in Materials and Manufacturing Engineering 38/2 (2010) 154-162.
• [18] T. Tański, K. Labisz, L.A. Dobrzański, Effect of Al additions and heat treatment on corrosion properties of Mg-Al based alloys, Journal of Achievements in Materials and Manufacturing Engineering 44/1 (2011) 64-72.
• [19] D. Upadhyay, M.A. Panchal, R.S. Dubey, V.K. Srivastava, Corrosion of alloys used in dentistry: A review, Materials Science & Engineering A 432/1-2 (2006) 1-11.
• [20] C. Manaranche, H. Hornberger, A proposal for the classification of dental alloys according to their resistance to corrosion, Dental Materials 23/11 (2007) 1428-1437.
• [21] R. Zupancic, A. Legat, N. Funduk, Tensile strength and corrosion resistance of brazed and laser-welded cobalt-chromium alloy joints, The Journal of Prosthetic Dentistry 96/4 (2006) 273-282.
• [22] A.J. Novinrooz, N. Afshari, H. Seyedi, Improvement of hardness and corrosion resistance of SS-420 by Cr+TiN coatings2O3-ZrO2(nano) (12 mol% CeO2) ceramics, Journal of Achievements in Materials and Manufacturing Engineering, 23/1 (2007) 43-46.
• [23] E. Kobayashi, T.J. Wang, H. Doi, Mechanical properties and corrosion resistance of Ti-6Al-7Nb alloy dental castings, Journal of Materials Science: Materials in Medicine 9/10 (1998) 567-574.
• [24] W. Kajzer, M. Kaczmarek, J. Marciniak, Influence of medium and surface modification on corrosion behaviour of the cobalt alloy, Journal of Achievements in Materials and Manufacturing Engineering, 26/2 (2008) 131-134.
• [25] Polish Standards PN-EN ISO 10271:2004: Dental metallic materials - Corrosion test methods.
• [26] S. Hiromoto, E. Onodera, A. Chiba, K. Asami, T. Hanawa, Microstructure and corrosion behaviour in biological environments of the new forged low-Ni Co-Cr-Mo alloys, Biomaterials 26/24 (2005) 4912-4923.
• [27] L.A. Dobrzański, A.D. Dobrzańska-Danikiewicz, Engineering materials surface treatment, Open Access Library 5 (2011) 1-480 (in Polish).