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ATMOSPHERIC CORROSION OF 304AND 316 STAINLESS STEELS
JSLu,IOdneval,CLeygraf College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,China,
J.S.Lu
,I.Odneval and C.Leygraf College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,China

金属学报(英文版) , 1999,
Abstract: Atmospheric corrosion of 304 and 316 stainless steels was studied by field exposure test, in which rain water was collected and analyzed by atomic absorption spectroscope (AAS). Emphasis was put on the dissolution of chromium and nickel from the stainless steels by atmospheric corrosion and rain runoff. AAS analyses shows that the amounts of yearly chromium and nickel dissolution were less than 150ng/cm 2 and 50ng/cm 2 respectively for both 304 and 316 stainless steels. XPS analysis reveals the marked Cr enrichment on the 316 stainless steel after one year field exposure. SEM shows the morphology of corrosion pits on the steel surfaces.
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