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  • Title: Corrosion and metallurgical study of some porcelain fused to metal alloys.
    Author: Metwally WA, Habib AN, Katamish HA.
    Journal: Egypt Dent J; 1995 Apr; 41(2):1159-66. PubMed ID: 9497652.
    Abstract:
    In order to evaluate the corrosion behaviour of some dental alloys to be applied as base-metal for PFM, electrochemical technique and metallurgical investigation were used. Potentiodynamic and potentiostatic tests were carried out under deaerated and aerated conditions in 1% NaCl solution. The results have shown that Ni-Cr alloy has a superior corrosion resistance under deaerated conditions, whereas Co-Cr alloy has a stronger tendency to passivation under aerated conditions. Fe-Cr alloy has demonstrated a poor performance. The results were analyzed on compositional and microstructural bases.
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