水库闸门用阳极电极腐蚀性能研究

Study on corrosion performance of anode electrode for reservoir gate

针对水库闸门长期处于水环境下易受水腐蚀的问题,开发了一种能够保护水库闸门防止腐蚀的牺牲阳极镁合金材料。通过铸态、固溶态和时效态Mg17.5Gd2.5Zn0.7Zr合金腐蚀试验测量,铸态、固溶态和时效态合金的腐蚀速率分别为0.896,3.318,3.689 mm/年。根据不同的水环境,结合合金的腐蚀速率,可以选择合适的材料作为防护水库闸门的牺牲阳极,从而提升水库闸门的使用寿命。

In order to solve the issue of reservoir gate corrosion due to prolonged exposure to water,a sacrificial anode magnesium alloy material has been developed to protect the reservoir gate from such corrosion.Corrosion experiments were conducted to measure the corrosion rates of as-cast,solution-treated,and aged Mg17.5Gd2.5Zn0.7Zr alloys in different water environments.The corrosion rates for the as-cast,solution-treated,and aged alloys were found to be 0.896,3.318 and 3.689 mm/year respectively.Based on these results,and combining with various water environments,Mg17.5Gd2.5Zn0.7Zr alloys with different heat treatment conditions can be selected as sacrificial anodes for protecting reservoir gates,and then enhancing their operational lifespan.