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Corrosion engineering digest
Modulated reflection spectra of passive films on a series of Ni-Cr alloys (5 to 28 mass % Cr) have been measured in 1 kmolm-3 Na2SO4 of pH 6.0. Quantitative relations between the characteristic of spectra and the composition of the films have been derived from spectra for thin composite films of NiO-Cr2O3 artificially prepared on Pt by MO-CVD technique. From these relations, cationic mass fractions of Cr3+ ions, XCr, of passive films on the alloys were determined. It was found that passivedoi:10.3323/jcorr1974.35.1_10 fatcat:wmb3kumlcfbbpc7gj64vwkpolu