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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Surface Characterization of Al Coated Steel Treated with Cerium Nitrate

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2001, v.14 no.6, pp.494-498
Lee, Do-Hyung
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Abstract

In this study, cerium nitrate was used as an alternative to chromate for the surface-treatment of Al coated steel to improve the corrosion resistance. The surface of Al coated steel was characterized by means of a X-ray photoelectron spectroscopy(XPS). It was found that cerium on the surface of Al coated steel had a mixture of oxidation states such as Ce(+4) and Ce(+3), and the relative concentration of each state was 57 % and 43 %, respectively. The surface film consisting of these cerium compounds played an important role for achieving the corrosion resistance of Al coated steel.

keywords
AI coated steel, cerium nitrate, surface characterization


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