常用牺牲阳极合金在NaCl溶液中的接触腐蚀行为

来源期刊：中国有色金属在线1997年第2期

论文作者：战广深

文章页码：60 - 64

关键词：牺牲阳极 合金 接触腐蚀 氯离子 浓度

Key words：sacrificial anode alloy galvanic corrosion chlorion concentration

摘    要：研究了作为牺牲阳极材料的Mg-Al-Zn-Mn、Al-Zn-In-Si-Mg和Zn-Al-Cd合金与 A3钢偶接时,溶液中Cl^-浓度和电偶对中阴阳极面积比变化对三种合金接触腐蚀行为的影响。偶对阳极电偶电流密度j_g随Cl^- 浓度增大而增大，j_g与面积比成正比关系。偶对 电偶电势E_g随Cl^- 浓度增大和面 积比减小向负向变化。当偶对中阴极金属材料为302 不锈钢和紫铜时，j_g随Cl^- 浓度增大有不同的变化趋势。

Abstract: The effects of Cl^- concentration and area ratio A_c/A_a have been studied on galvanic corrosion behavior of Mg-Al-Zn -Mn, Al-Zn-In-Si-Mg and Zn-Al-Cd alloys coupled to A3. Results showed that the galvanic current density j_g increases with increasing Cl^- concentration, and j_g is directly proportional to A_c/A_a. The galvanic potential E_g changes in the negative direction with increasing Cl^- concentration and decreasing A_c/A_a. The change of j_g varies with increasing Cl^- concentration for anode alloys coupled to 302 stainless steel and copper.