低合金铸铁在动海水中的腐蚀研究  

Corrosion Behaviour of Low Alloyed Cast Iron Exposed to Running Seawater

作　　者：夏兰廷[1] 黄桂桥 

机构地区：[1]太原科技大学材料科学与工程学院,太原030024 [2]青岛海洋腐蚀研究所,山东青岛266000

出　　处：《中国铸造装备与技术》2010年第2期18-20,共3页China Foundry Machinery & Technology

摘　　要：主要研究了4种低合金铸铁分别在流速为3、7、11m/s动海水中的腐蚀行为。结果表明:低合金铸铁在动海水中的平均腐蚀率明显大于静海全浸区的平均腐蚀率,且随流速的增加而增大。海水流速在3～11m/s时,低合金铸铁的腐蚀形式主要以湍流腐蚀为主。Corrosion behavior of low-alloyed cast irons exposed to running seawater with running speeds of 3,7,11m/s respectively, has been investigated with discussion about the obtained results which have shown that the average corrosion rates in the running seawater were clearly higher than those in static seawater and its average corrosion rates increased obviously with increase of flow speed.The main type of corrosion of low- alloyed cast irons exposed to the running seawater is turbulent-flow corrosion when the running speed of the seawater is higher than 3m/s.

关 键 词：低合金铸铁 动海区 平均腐蚀率 

分 类 号：TG172.5[金属学及工艺—金属表面处理]