Metwally W A, Habib A N, Katamish H A
Corrosion Dept., Central Metallurgical Research and Development Institute, Helwan, Cairo, Egypt.
Egypt Dent J. 1995 Apr;41(2):1159-66.
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.
为了评估一些用作烤瓷熔附金属（PFM）基底金属的牙科合金的腐蚀行为，采用了电化学技术和金相研究方法。在1%氯化钠溶液中，于脱气和通气条件下进行了动电位和恒电位测试。结果表明，镍铬合金在脱气条件下具有优异的耐腐蚀性，而钴铬合金在通气条件下具有更强的钝化倾向。铁铬合金表现不佳。基于成分和微观结构对结果进行了分析。
