Effects of electrolyte solution (i.e., KOH, NaOH, NaCl, and HCl) with various concentrations (from 0 to 0.71 M) on corrosion and mechanical properties of the copper alloys were investigated. Experimental results showed that the increases in the concentration of electrolytes allowed faster corrosion process. However, too high concentration of electrolytes has no further impacts on the corrosion profile due to the existence of the passivity phenomena on the surface of the material, preventing the material to get more corroded. Acidic (HCl) and salt (NaCl) electrolytes gave more impacts on the corrosion compared to the alkaline solution (i.e., NaOH and KOH) since the acidic and salt ions are able to destroy the formed passivation layer. The correlation of the corrosion rate and the mechanical properties was also presented, in which the increases in the corrosion rate were in line with the decreases in the mechanical properties (i.e., tensile and yield strength). During the corrosion, the atomic structure in the material received attacks from the electrolyte ions, making the structure inside the copper alloys to be less strong and easily fatigued. Understanding the corrosion process and mechanical properties is important for further applications of copper-related alloys in extreme and severe conditions.

研究了各种浓度（0至0.71 M）的电解质溶液（如KOH，NaOH，NaCl和HCl）对铜合金腐蚀和力学性能的影响。实验结果表明，电解质浓度的增加允许更快的腐蚀过程。但是，由于材料表面上存在钝化现象，电解质浓度过高对腐蚀曲线没有进一步影响，从而防止了材料受到更多腐蚀。与碱性溶液（即NaOH和KOH）相比，酸性（HCl）和盐（NaCl）电解质对腐蚀的影响更大，因为酸性和盐离子能够破坏所形成的钝化层。还提出了腐蚀速率与机械性能的关系，其中腐蚀速率的增加与机械性能（即拉伸强度和屈服强度）的下降一致。在腐蚀过程中，材料中的原子结构受到电解质离子的侵蚀，使铜合金内部的结构强度降低，容易疲劳。了解腐蚀过程和机械性能对于在极端和恶劣条件下进一步应用铜相关合金非常重要。