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主要论述用牺牲阳极法,特别是采用价格低廉的铝基阳极保护各种港湾及近海工程设施的特点、方法及经济意义。介绍西沙、旅顺、威海等地区大型钢板桩码头、洞门、浮码头、水鼓等的保护状况。所用阳极为铝-锌-铟系,成份为Al(纯度99.7％)—2～5％Zn—0.025％In,分别或同时加入0.01％Cd,0.025％Sn,0.1％Si,2％Mg。在海水中的电流效率可达85～90％,当加入元素含量与原材料中铁、硅含量配比合适时,效率可高达90～95％,电容量≥2500安时/公斤。三年多来已为各种使用环境提供了各种品种和规格的铝阳极100多吨,保护效果均良好。文中还介绍了牺牲阳极保护中几种较好的实施方案和几处港工设施保护实例。
Mainly discusses the sacrificial anode method, especially the use of low-cost aluminum-based anode protection of various harbor and offshore engineering facilities, methods, and economic significance. Introduce Xisha, Lushun, Weihai and other large sheet pile pier, Dongmen, floating pier, water drum protection status. The anode is made of aluminum-zinc-indium with the composition of Al (99.7% purity), 2-5% Zn-0.025% In, 0.01% Cd, 0.025% Sn, 0.1% Si and 2% Mg, respectively. The current efficiency in seawater can reach 85-90%. When the content of iron and silicon in the raw material is suitable, the efficiency can be as high as 90-95% and the capacity can be more than 2500Ahr / kg. Over the past three years, it has provided more than 100 tons of aluminum anodes with various varieties and specifications for various operating environments, and the protection effect is good. The article also introduced several good sacrificial anode protection in the implementation of several examples and several examples of port facilities protection.