Effect of gallium on the corrosion susceptibility of an odontological Ni-Cr alloy
DOI:
https://doi.org/10.3989/revmetalm.1996.v32.i5.896Keywords:
Ni-Cr alloys, Ni-Cr-Ga alloys, Odontological alloys, Corrosion susceptiblityAbstract
Due to the high price of gold and its alloys, alternative alloys of non noble metals have been developed for use in fixed dental prosthesis. These are Ni-Cr and Co-Cr alloys. Usually fixed prosthesis are joined and then covered with a ceramic layer and for this purpose good castability and adherence with ceramics are required. The castability of Ni-Cr alloys is good and so is their adherence to the ceramic layer. However, a new Ni-Cr alloy with addition of gallium has been produced. In the present work the corrosion properties of a Ni-Cr-Ga alloy in oral environments are analyzed. The results show that the addition of gallium to a Ni-Cr alloy does not produce a modification on the corrosion properties of Ni-Cr alloys.
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