Journal
CORROSION SCIENCE
Volume 89, Issue -, Pages 21-29Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.07.055
Keywords
Brass; XPS
Funding
- Russian Foundation of Basic Researches [13-003-00354]
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The surface of brass (Cu80/Zn20) exposed in water and different aqueous solutions and 2-mercaptobenzothiazole (MBT) is studied by XPS. The leaching of zinc (dezincification) is observed in pure water and in borate solutions. On the contrary, if brass is exposed in 0.5 M NaCl or Na2SO4 solutions copper is removed from the surface layer leaving brass surface covered by oxidized zinc, thus decuprification occurs. Exposure of brass in 0.05 mmol/l MBT solution reduces results oxide growth and forms mix complex CuZnMBT layer, which thickness increases with time. Adding 0.5 M NaCl to this solution does not remove copper from the surface. (C) 2014 Elsevier Ltd. All rights reserved.
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