采用电化学工作站和扫描电子显微镜等研究了电脉冲处理对硅黄铜合金耐蚀性 能的影响． 研究结果表明: 经电脉冲处理后，硅黄铜合金的腐蚀电位略有提高，自腐蚀电流 密度下降约一个数量级; 容抗弧直径大小是未处理时的6 ～ 7 倍，其脱锌层厚度由未处理 时的80 ～ 90μm 减小到电脉冲处理后的15 ～ 20μm． 电脉冲处理后硅黄铜合金的耐蚀性优 于未进行电脉冲处理的硅黄铜合金．

The effects of the electric pulse treatment on the corrosion resistance of silicon brass are investigated by using an electrochemical workstation and a SEM. The results show that, after the electric pulse treatment, the corrosion potential of silicon brass increases while the corrosion current density decreases by about one order of magnitude, and that the electric field treatment increases the capacitive reactance diameter of silicon brass by 5~6 times and decreases the thickness of dezincification layer from 80~90 μm to 15~20 μm. It is thus concluded that the corrosion resistance of silicon brass alloy is improved after the electric field treatment.