Chemistry & Chemical Technology. – 2015. – Vol. 9, No. 1

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The scientific-technical journal

It is the scientific-technical journal in English in Ukraine discussing actual problems of chemistry and chemical technology. Compared with other chemical journals Ch&ChT is publishing materials of both theoretical and practical values in such fields as analytical, general organic, physical and inorganic chemistry; chemistry of high molecular compounds; materials science and engineering; chemical kinetics and catalysis; technology of inorganic substances; technology of organic synthesis products; chemical technology of processing of combustible minerals; processes and apparatus of chemical and food productions; biotechnology and ecology.

Chemistry & Chemical Technology : [the scientific-technical journal] / Lviv Polytechnic National University ; editor-in-chief M. Bratychak. – Lviv : Publishing House of Lviv Polytechnic National University, 2015. – Volume 9, number 1. – 133 p. : ill.

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Author: search.filters.author.Bragina, LyidmylaSubject: search.filters.subject.окиснення

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    Glass coatings on the basis of Na2O-B2O3-SiO2 system for tin bronze protection during melting
    (Publishing House of Lviv Polytechnic National University, 2015) Bragina, Lyidmyla; Sobol, Yuliya
    Requirements to properties of protectivetechnological coatings for the tin bronze melting from secondary raw materials were formulated in the work. The choice of model glasses compositions in the initial Na2OB2O3-SiO2 system on the basis of the melting parameters values was made. Non-scarce and inexpensive raw materials for protective coatings were selected. Also the best glass composition was determined based on the complex of chosen properties. The formation mechanism of the selected composition glassy melting by using DTА and XRDА was studied. Сформульовано вимоги до властивостей захисно-технологічних покриттів для виплавлення олов’яних бронз з вторинної сировини. За значеннями плавкісних показників здійснено вибір складів модельних стекол в вихідній системі Na2O-B2O3-SiO2 та підібрано недефіцитні та невартісні сировинні матеріали для захисних покриттів, а також знайдено кращий за комплексом обраних властивостей склад склокомпозиції. За допомогою ДТА та РДА вивчено механізм формування склорозплаву обраної композиції.