牙科用Au50-Ag25-Pd25和Ni88.6-Cr11.4合金的腐蚀行为比较

IF 2.9 Q2 ELECTROCHEMISTRY Journal of Electrochemical Science and Engineering Pub Date : 2023-07-29 DOI:10.5599/jese.1931

Irfan Liaquat, A. Ziya, Athar Ibrahim, Urva Malik, Gao Qilong, Muhammad Danial

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引用次数: 0

摘要

采用开路电位、电化学阻抗谱和动电位极化测量等方法研究了Au50-Ag25-Pd25和Ni88.6-Cr11.4合金在pH 6.5和37℃条件下在Fusayama人工唾液中的电化学行为。用等效电路对电化学阻抗谱结果进行了模拟。在人工唾液中浸泡后，用扫描电镜结合能量色散光谱对样品进行表面表征。结果表明，Au50-Ag25-Pd25合金具有比Ni88.6-Cr11.4更高的电阻性，可推荐用于具有金属框架的修复体患者的有效治疗。

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Comparative corrosion behavior of Au50-Ag25-Pd25 and Ni88.6-Cr11.4 alloys utilized in dental applications

The electrochemical behaviour of alloys (Au50-Ag25-Pd25 and Ni88.6-Cr11.4) was studied in Fusayama's artificial saliva at pH 6.5 and 37 °C by using open circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization measurements. Electrochemical impedance spectroscopy results were simulated with an equivalent electrical circuit. After immersion in artificial saliva, surface characterization of samples was done using scanning electron microscopy connected with energy-dispersive spectroscopy. All obtained results revealed that Au50-Ag25-Pd25 alloy is much more resistive than Ni88.6-Cr11.4 and can be recommended for the effective treatment of patients with dental prosthetics that have metal frameworks. s.

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