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The Mechanism of Sulphide Film Growth on Copper in Anaerobic Sulphide Solutions Under Natural Corrosion Conditions

[ Vol. 8 , Issue. 2 ]

Author(s):

J. Chen*, Z. Qin and D.W. Shoesmith   Pages 95 - 99 ( 5 )

Abstract:


Background and Method: The growth mechanism of sulphide films formed on copper in anaerobic 0.1 M NaCl + 5 x 10-4 M Na2S solution has been investigated under natural corrosion conditions for exposure periods up to 1691 hours using scanning electron microscopy, focused ion beam cross-sectioning, and a Au marker procedure.

Results: The film formed by a chemical deposition process via an outward growth mechanism. This process was controlled by cuprous ion transport in the film combined with sulphide diffusion in solution.

Keywords:

Sulphide film, copper, corrosion, diffusion, crystal growth, microscopy.

Affiliation:

Department of Chemistry and Surface Science Western, Western University, London, Ontario, Department of Chemistry and Surface Science Western, Western University, London, Ontario, Department of Chemistry and Surface Science Western, Western University, London, Ontario



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