TY - JOUR
T1 - Interactions of N,N′-dimethylaminoethanol with steel surfaces in alkaline and chlorine containing solutions
AU - Welle, A.
AU - Liao, J. D.
AU - Kaiser, K.
AU - Grunze, M.
AU - Mäder, U.
AU - Blank, N.
N1 - Funding Information:
M.G. thanks the Deutsche Forschungsgemein-schaft and the DAAD for supporting a sabbatical leave during which this manuscript was completed. U.M. and N.B. would like to thank Sika Finance AG for supporting this work.
PY - 1997/10
Y1 - 1997/10
N2 - Formulations based on dilute aqueous solutions of N,N′-dimethylethanolamine (DMEA) are used to protect reinforcement steel bars ('rebar') in concrete from corrosion. In a previous paper we discussed the usefulness of X-ray photoelectron spectroscopy (XPS) to detect DMEA adsorbed from solution and the application of secondary neutral mass spectrometry (SNMS) to study migration of DMEA through a cement matrix. In this report we present XPS data of DMEA adsorbed on steel surfaces from alkaline and chlorine containing solutions of variable concentration range and discuss models for the interaction of DMEA with the oxidized steel surface and the mechanism of corrosion inhibition of DMEA. DMEA is strongly bonded to the steel surface and displaces ionic species from the substrate/solution interface hence protecting the ironoxide surface from ionic attack.
AB - Formulations based on dilute aqueous solutions of N,N′-dimethylethanolamine (DMEA) are used to protect reinforcement steel bars ('rebar') in concrete from corrosion. In a previous paper we discussed the usefulness of X-ray photoelectron spectroscopy (XPS) to detect DMEA adsorbed from solution and the application of secondary neutral mass spectrometry (SNMS) to study migration of DMEA through a cement matrix. In this report we present XPS data of DMEA adsorbed on steel surfaces from alkaline and chlorine containing solutions of variable concentration range and discuss models for the interaction of DMEA with the oxidized steel surface and the mechanism of corrosion inhibition of DMEA. DMEA is strongly bonded to the steel surface and displaces ionic species from the substrate/solution interface hence protecting the ironoxide surface from ionic attack.
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U2 - 10.1016/s0169-4332(97)00216-x
DO - 10.1016/s0169-4332(97)00216-x
M3 - Article
AN - SCOPUS:0031249341
SN - 0169-4332
VL - 119
SP - 185
EP - 198
JO - Applied Surface Science
JF - Applied Surface Science
IS - 3-4
ER -