Study on Galvanic Corrosion of Tube Sheet of Stainless Steel Condensers

The situation,influential factors,and protective measures of galvanic corrosion of carbon steel tube sheet caused by stainless steel tube in condensers are studied.The comparison of condensers between brass tubes and stainless steel tubes is made.After brass tubes are changed into stainless steel tubes for condensers,the galvanic corrosion of tube sheet is less serious than the brass one in the cases of fresh water and brackish water.An important factor for galvanic corrosion is the area ratio of the galvanic couple.It is suitable to use either cathodic protection or a combination of cathodic protection and coating for tube sheet.The application of corrosion inhibitors is also effective.