海水冷却管内衬共聚物后的电偶腐蚀

Galvanic Corrosion of Seawater Cooling Pipe Lined Copolymers

采用海水浸泡、电偶腐蚀、模拟腐蚀和扫描电镜分析等方法,研究了脱氧铜(TUP)紫铜冷却水管内壁内衬共聚物后的电偶腐蚀性能。结果表明,内衬乙烯-丙烯酸共聚物(EAA)或涂敷环氧玻璃鳞片后,TUP紫铜管与高电位金属连接引起的电偶腐蚀能够得到有效抑制,内衬EAA的性能优于涂敷环氧玻璃鳞片。

Galvanic corrosion of copper cooling pipes lined with copolymer were tested by seawater immersed test, galvanic corrosion test, simulated pipe test and scanning electron microscopy. The results showed that the galvanic corrosion between red copper and high potential metal was efficiently controlled by lining ethylene acrylic ocid （EAA） copolymer or overlaying epoxy glass flakes, the effect of lining ethylene acrylic acid （EAA） eopolymer was more excellent than that of overlaying epoxy glass-flakes.