Experimental evaluation of corrosion resistance of the alloys used in the fixed dental prosthesis
| Autor: | Costin Coman, Doina Lucia Ghergic, Facultatea de Medicină Dentară, Universitatea „Titu Maiorescu', Bucureşti, Universitatea Politehnica din Bucureşti Facultatea Ştiinţa şi Ingineria Materialelor, Horia Mihail Barbu, Cosmin Mihai Cotruţ, Violeta Hâncu, Raluca Monica Comăneanu |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Romanian Journal of Stomatology. 61:117-120 |
| ISSN: | 2069-6078 1843-0805 |
| DOI: | 10.37897/rjs.2015.2.1 |
| Popis: | Objectives. In this study we evaluated corrosion resistance of three types of metal alloys (two NiCr and one CoCr). Methods. Samples (coded A, B, C) of circular shape, with dimensions 13 x 1.5 mm, sanded and polished, were introduced in Fusayama Meyer artificial saliva at pH 5.2 and 37 ± 0.5°C and tested in terms of corrosion resistance with a potentiostat/galvanostat (model 4000 PARSTAT, Princeton Applied Research). Results. Open circuit potential EOC [mV] ranged between 21.316 and 5.75. Corrosion potential Ecor [mV] was between -73.536 and -395.662, and the corrosion current density icor [A/cm2] was between 1.237 x 10-6 and 905.13 x 10-9. Conclusion. The best corrosion behavior in Fusayama Meyer artificial saliva at pH 5.2 and at a temperature of 37 ± 0.5°C is the alloy A, followed by the alloy C. |
| Databáze: | OpenAIRE |
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