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has been cited by the following article:

• TITLE: Electrochemical and Microstructural Study of Ni-Cr-Mo Alloys Used in Dental Prostheses

  AUTHORS: José W. J. Silva, Lucíola L. Sousa, Roberto Z. Nakazato, Eduardo N. Codaro, Hamilton de Felipe

  KEYWORDS: Corrosion, Metal and Alloys, Microstructure, Nickel-Chrome-Molybdenum

  JOURNAL NAME: Materials Sciences and Applications, Vol.2 No.1, January 25, 2011

  ABSTRACT: Ni-Cr-Mo alloys have been widely used as fixed dental prostheses. Recast process influence on corrosion behavior of Ni-Cr-Mo dental alloy in simulated physiological serum has been investigated using chemical and electrochemical techniques. Ni-Cr-Mo alloy recast by induction (induction) or by blowtorch (torch) has exhibited similar dendritic structures with wide and precipitate grains in their boundaries. The torch alloy has presented good corrosion resistance in physiological serum. Passivation process provides this corrosion resistance. Passivation of Ni-Cr-Mo alloy is often attributed to the formation of a thin and compact layer of chromium oxide (Cr2O3). This film is self-limiting because it acts as a barrier to the oxygen transport and metal ions. This film stability will depend on its solubility to the working temperature. Different recast procedures change electrochemical parameters as stabilizing potential in open circuit, current density and passivation interval.