Abstract
We have designed a procedure for calculating strength criterion K n as a parameter determining the mean strength of structure of silicate glasses and melts. The infrared spectra of silicate glasses used as coatings to protect low-alloy and low-carbon steels against high-temperature gas-phase corrosion in process heating are studied. Aluminum cations in the glasses under study are four-coordinate, while boron ions may be both fourand three-coordinated. The latter fact has a significant effect on the K n values. The K n values are calculated at operating temperatures of the studied glassy coatings. The correlation ratio between protective effect Δg of the glassy coatings and their K n is analyzed. For glassy coatings with an operating temperature that lies within their vitrification range, there exists a nonlinear correlation between Δg and K n ; the correlation ratio between these parameters increases with temperature. Regression equations (significance level p = 0.05) describing the relationship between Δg and K n are obtained for temperatures of 900 and 1000°C.
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Original Russian Text © K.Yu. Frolenkov, D.V. Tsymai, 2015, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2015, Vol. 51, No. 5, pp. 547–554.
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Frolenkov, K.Y., Tsymai, D.V. The effect of structural and energy parameters of glassy melts on the protective performance of coatings made of these glassy melts. Prot Met Phys Chem Surf 51, 835–841 (2015). https://doi.org/10.1134/S2070205115030077
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DOI: https://doi.org/10.1134/S2070205115030077