TPWJ, 2019, #1, 15-24 pages
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #1, 2019 (February)
Dependence of hygroscopicity of coatings of low-hydrogen electrodes on composition and structure of liquid glass
A.E. Marchenko1, V.V. Trachevsky2 and N.V. Skorina1
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
Technical Center of the NAS of Ukraine
13 Pokrovskaya Str., 04070 Kyiv, Ukraine. E-mail:email@example.com
Presented were the results of investigation of hygroscopicity of coatings of low-hydrogen electrodes depending on composition of liquid Li-, Na- and K-glasses as well as their binary mixtures, which were interpreted from point of view of evolution of a silicon-oxygen structure in the process of glass formation under effect of changing type and relationship of cations of alkali metals. Carried diagnostics of structure-functional self-organization of the silicon-oxygen anions in composition of the liquid glasses was performed based on data of a nuclear magnetic resonance. The spectra of nuclear magnetic resonance 29
Si were used. Generalized data were considered taking into account dominance of polycondensation mechanism. Correlation between the indices of coating hygroscopicity and relationship of bridge Q4
and nonbridge Q1
connectivities in structure of the silicon-oxygen anions were determined. 19 Ref., 2 Tables, 12 Figures.
arc welding, welding electrodes, coating hygroscopicity, production technology, liquid glass, structure of liquid metal, spectroscopy of nuclear magnetic resonance
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