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Electrophysical andmechanical propertiesof SnO2–Sb2O3–Cceramic-basedcomposite material :научное издание Dobromyslov S.S.Kirko V.I.Razumovskaya V.A.2020 год

Electrophysical and mechanical properties of SnO2–Sb2O3–C ceramic-based composite material : научное издание
статья из журнала

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База данных: Каталог библиотеки СФУ
Библиографическое описание: Electrophysical and mechanical properties of SnO2–Sb2O3–C ceramic-based composite material : научное издание / S. S. Dobromyslov, V. I. Kirko, V. A. Razumovskaya. - Текст : непосредственный // Nanotechnology Perceptions. - 2020. - Т. 16, № 3. - P. 261-266. - ISSN 1660-6795, DOI 10.4024/N21DO19A.ntp.16.03.
Аннотация: Materials based on tin oxide and antimony oxide are of great interest as they are conductive at high temperatures and possess high corrosion resistance in corrosive environments such as the electrolytes used in aluminium electrolysis. Hence these tin dioxide-based materials can find wide application as current-carrying anodes in aluminium production. In this work the electrophysical and mechanical properties of SnO2–Sb2O3–C ceramics have been studied. Materials have been synthesized by: preparing the mixture, pressing with polyvinyl alcohol, drying and firing at 1573 K. Specific electrical resistivity in the range 20–1000 °C was measured by a four-contact method. Thermophysical characteristics were obtained by a laser flash method. Material phase composition was determined by X-ray analysis, and microstructure by electron microscopy. It was demonstrated that the specific electrical resistance of 96%SnO2–2%Sb2O3–2%MnO2–2%C at 600–700 °C is practically temperatureindependent. Above 700 °C the specific electrical resistivity of the material begins to increase catastrophically due to carbon oxidation. At temperatures 700–1200 °C the specific electrical resistivity becomes the same as that of a classical semiconductor and practically the same as that of carbon-free ceramics with composition 96%SnO2–2%Sb2O3–2%MnO2. The replacement of MnO2 by Al2O3 allows enlarging the temperature range of the electrical resistivity stability up to 1200 °C.
Год издания: 2020
Авторы: Dobromyslov S.S. , Kirko V.I. , Razumovskaya V.A.
Источник: Nanotechnology Perceptions
Выпуск: Т. 16, № 3
Номера страниц: 261-266
Держатель оригинала документа: Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science, Krasnoyarsk State Pedagogical University named after V.P. Astafyev, Siberian Federal University
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