Characterization of the Electrochemical Corrosion of a Beryllium-Bronze Alloy

Abstract

Selective and efficient electrochemical analytical methods for the characterization of the corrosion behavior of beryllium bronze alloys are significant and necessary. These electrochemical methods are based on open-circuit chronopotentiometry curves, potentiodynamic polarization, and electrochemical impedance spectroscopy. From the electrochemical analysis, the results show that the corrosion reaction of the untreated samples became more severe as the NaCl concentration was increased. However, the corrosion reaction was not obvious when the alloy was treated by commercial latex paint and laboratory-produced latex paint. Furthermore, the corrosion potential has the same variation tendencies and the value of the corrosion potential was more positive when the alloy surface was treated by the laboratory-produced latex paint. The maximum and minimum of the corrosion potential were found for conditions using the untreated samples and samples treated with the laboratory-produced latex paint. The corrosion current, the charge transfer resistance, and the radius of capacitive resistance all decreased with increasing NaCl concentration. The above results suggest that the corrosion rate increased as the NaCl concentration was increased. Better anti-corrosion technology was found through various experimental analyses. The innovative electrochemical methods applied in the electrochemical corrosion behavior of beryllium bronze alloy are accurate, efficient, and reliable.