Anti-tarnish silver alloys in system Ag-Cu-Zn-Si with the addition of aluminum

Metallurgical & Materials Engineering

article

Marija Korać¹  Stevan Dimitrijević²  Kemal Delijić³  Željko Kamberović 

[1] Faculty of Technology and Metallurgy, University of Belgrade;Innovation center of the Faculty of Technology and Metallurgy in Belgrade Ltd.;Faculty of Metallurgy and Technology, University of Montenegro

关键词: anti-tarnish silver;    alloy;    corrosion resistance;    sulfidization;    Ag-Cu-Zn-Al-Si system;   

DOI  :  10.30544/386

学科分类：医学（综合）

来源: Association of Metallurgical Engineers of Serbia

【 摘 要 】

This paper presents investigations of aluminum addition influence on the corrosion characteristics of the sterling silver Ag-Cu-Zn-Si alloys. The procedure for obtaining Ag-Cu-Zn-Al-Si alloys in small ranges of predefined composition was also presented. Open circuit potential measurements, linear polarization resistance method and potentiodynamic polarization tests were employed to determine corrosion characteristics of the alloys. The materials were tested in a 0.01M sodium sulfide solution. It was shown that the addition of aluminum improves sulfidization resistance and corrosion characteristics. Best results are achieved for the alloy with the following composition 92.5% Ag, 1.9% Cu, 3.7% Zn, 1.6% Al and 0.3% Si.

【 授权许可】

CC BY