Paper Title:
Synergistic Corrosion Resistance of Cerium Film and Silane Film on Hot-Dip Galvanized Steel
  Abstract

This work aims at developing a new environmental-friendly treatment for hot-dip galvanized (HDG) steel as alternative to the classic systems based on chromates. A double layer film on the HDG steel sheets was prepared by immersing the sheets in 5 g/L Ce(NO3)3 aqueous solution and 5 vol.% silane solution in turn. The morphology of the cerium conversion film was analyzed using scanning electron microscopy (SEM). The corrosion resistance of the films was investigated by linear polarization (LPR) and natural salt spray (NSS) tests. The results show that the surface morphology of cerium conversion film appears on a “dry-mud” structure, which is favorable to enhance the combined strength between the cerium conversion and the silane film. The corrosion protection efficiency of the double layer films increases greatly, especially both the anodic and cathodic processes of zinc corrosion on the samples are suppressed conspicuously, and the synergistic protection effect of the single cerium film and the single silane film is evident.

  Info
Periodical
Edited by
Shengyi Li, Yingchun Liu, Rongbo Zhu, Hongguang Li, Wensi Ding
Pages
2021-2025
DOI
10.4028/www.scientific.net/AMM.34-35.2021
Citation
H. J. Wu, F. Y. Yang, "Synergistic Corrosion Resistance of Cerium Film and Silane Film on Hot-Dip Galvanized Steel", Applied Mechanics and Materials, Vols. 34-35, pp. 2021-2025, 2010
Online since
October 2010
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$35.00
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