Infrared Spectroscopy Study of Chromium-Containing Insulating Coatings on Silicon Steel
Based on Fourier Transform Attenuated Total Reflection Infrared Spectroscopy(ATR-FTIR),the changes of different curing methods and processes on the properties of non-oriented silicon steel chromium-containing insulating coatings were studied.Effects of coating thickness,infrared heating method and curing degree on the IR spectrum of Cr-coatings were discussed.The results show that ATR-FTIR can be used as an important method for the characterization of Cr-containing insulating coatings on silicon steel,which can avoid the influence of coating thickness and color fluctuations;the absorption peak near 915 cm-1 in the IR spectrum can be used as the basis for judging whether the coating contains[Cr6+];the peak near 1585 cm-1 can be used as reference for the characteristic peak of the film-forming substance of the Cr-coating on silicon steel(acrylic resin cross-linked with trivalent chromium to form a complex salt).
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维普
