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南汇县芦潮港水闸位于上海市东南角,面临东海。在淡海水介质作用下闸门钢板遭受严重锈蚀。虽然采用了涂料保护,闸门的检修保养期也只有3～4年。本文试验了涂料与牺牲阳极联合保护。Al-Zn-In-Sn 阳极证明是一种较好的牺牲阳极材料,它的保护效果达到95%以上。闸门钢板保护电位平均等于-0.80伏(对 Ag/AgCl 参比电极),电位分布均匀。采用的保护电流密度等于15～20毫安/米~2。铝合金牺牲阳极保护有明显的经济效益,而且安装方便,不需要专人管理。因此,这种保护方法对沿海挡潮闸的保护有普遍意义。
Nanhui Luchaogang sluice is located in the southeast corner of Shanghai, facing the East China Sea. Under the effect of light seawater, the gate steel plate suffered serious corrosion. Although the use of paint protection, gate maintenance period of only 3 to 4 years. This article tested the coating and sacrificial anode joint protection. Al-Zn-In-Sn anode proved to be a good sacrificial anode material with a protective effect of more than 95%. Gate plate protection potential average equal to -0.80 volts (for Ag / AgCl reference electrode), potential distribution. The protection current density used is equal to 15-20 mA / m ~ 2. Aluminum sacrificial anode protection has obvious economic benefits, but also easy to install, do not need someone to manage. Therefore, this method of protection has a universal significance for the protection of tidal flats along the coast.