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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ "МИСИС"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2017-5-19-27</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-605</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Металлургия цветных металлов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Metallurgy of Nonferrous Metals</subject></subj-group></article-categories><title-group><article-title>ФАЗОВЫЕ РАВНОВЕСИЯ В ЖИДКОМ МЕТАЛЛЕ СИСТЕМЫ Cu–Al–Cr–O</article-title><trans-title-group xml:lang="en"><trans-title>PHASE EQUILIBRIA IN CU–AL–CR–O SYSTEM LIQUID METAL</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самойлова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Samoilova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. хим. наук, инженер кафедры материаловедения и физико-химии материалов (МиФХМ) ЮУрГУ (НИУ), науч. сотр. управления научной и инновационной деятельности ЮУрГУ (НИУ).</p><p>(454080, г. Челябинск, пр-т им. В.И. Ленина, 76). </p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), engineer of the Department of materials science and physics and chemistry of materials (MSPCM), research scientist of the Management of science and innovation, South Ural State University (National Research University) (SUSU (NRU)).</p><p>(454080, Russia, Chelyabinsk, Lenin av., 76). </p></bio><email xlink:type="simple">samoylova_o@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макровец</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Makrovets</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> инженер кафедры МиФХМ ЮУрГУ (НИУ). </p><p>Челябинск.</p></bio><bio xml:lang="en"><p>engineer of the Department of MSPCM, SUSU (NRU). </p><p>Chelyabinsk.</p></bio><email xlink:type="simple">makrovetcla@susu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлов</surname><given-names>Г. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailov</surname><given-names>G. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф., зав. кафедрой МиФХМ ЮУрГУ (НИУ).</p><p>Челябинск.</p></bio><bio xml:lang="en"><p> Dr. Sci. (Tech.), prof., head of the Department of MSPCM, SUSU (NRU). </p><p>Chelyabinsk.</p></bio><email xlink:type="simple">mikhailovgg@susu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Южно-Уральский государственный университет (национальный исследовательский университет) (ЮУрГУ (НИУ)).<country>Россия</country></aff><aff xml:lang="en">South Ural State University (National Research University) (SUSU (NRU)).<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>04</day><month>11</month><year>2017</year></pub-date><volume>0</volume><issue>5</issue><fpage>19</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Самойлова О.В., Макровец Л.А., Михайлов Г.Г., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Самойлова О.В., Макровец Л.А., Михайлов Г.Г.</copyright-holder><copyright-holder xml:lang="en">Samoilova O.V., Makrovets L.A., Mikhailov G.G.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://cvmet.misis.ru/jour/article/view/605">https://cvmet.misis.ru/jour/article/view/605</self-uri><abstract><p>Проведен термодинамический анализ фазовых равновесий, реализующихся в системе Cu–Al–Cr–O. Выполнено термодинамическое моделирование поверхности ликвидус оксидной фазовой диаграммы Cu2O–Al2O3–Cr2O3. Для описания активностей оксидного расплава использовалось приближение теории субрегулярных ионных растворов, энергетические параметры которой были определены в процессе моделирования. В ходе расчета также оценены характеристики плавления соединения CuCrO2. По результатам выполненного расчета установлены координаты точек нонвариантных равновесий, реализующихся в трехкомпонентной оксидной системе Cu2O–Al2O3–Cr2O3. Также проведено термодинамическое моделирование процессов взаимодействия в системе Cu–Al–Cr–O в условиях существования металлического расплава на основе меди. Определена температурная зависимость для константы равновесия реакции, характеризующей образование твердого соединения CuCrO2 из компонентов металлического расплава системы Cu–Al–Cr–O. Получена температурная зависимость для параметра взаимодействия первого порядка (по Вагнеру) хрома и кислорода, растворенных в жидкой меди. Результаты термодинамического моделирования для системы Cu–Al–Cr–O представлены в виде поверхности растворимости компонентов в металле, которая позволяет связать количественные изменения в концентрации металлического расплава с качественными изменениями в составе образующихся продуктов взаимодействия. По результатам проведенного моделирования определено, что при значимых концентрациях алюминия и хрома в медном расплаве системы Cu–Al–Cr–O будут образовываться частицы твердого раствора |Al2O3, Cr2O3|тв.р в качестве основного продукта взаимодействия. Результаты работы могут быть интересны для совершенствования технологического процесса выплавки хромовых бронз.</p></abstract><trans-abstract xml:lang="en"><p>A thermodynamic analysis of phase equilibria in a Cu–Al–Cr–O system was performed. The study involved thermodynamic modeling of the liquidus surface of the Cu2O–Al2O3–Cr2O3 oxide phase diagram. To describe the thermodynamic activity of the molten oxide, an approximation of the sub-regular ionic solutions theory was used with the energy parameters determined in the modeling process. Melting characteristics of CuCrO2 were also evaluated during calculations. Calculation results were used to determine the coordinates of invariant equilibria points in the Cu2O–Al2O3–Cr2O3 ternary oxide system. The study also involved thermodynamic modeling of interactions in the Cu–Al–Cr–O system in the conditions of a copper-based metal melt. The temperature function of the reaction equilibrium constant was determined for the formation of solid CuCrO2 from the components of the Cu–Al–Cr–O molten metal system. The temperature function was obtained for the first order (Wagner’s) interaction parameter of Cr and O dissolved in liquid copper. The results of thermodynamic modeling for the Cu–Al–Cr–O system are represented as the surface of components solubility in metal, which allows us to relate the quantitative changes in the molten metal concentration to the qualitative changes in the composition of resulting reaction products. As a result of modeling, it was found that the given considerable concentrations of Al and Cr in the Cu–Al–Cr–O molten copper system form the |Al2O3, Cr2O3|ss solid solution particles as primary reaction products. The results of the study may be used to improve the chromium bronze smelting process.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термодинамическое моделирование</kwd><kwd>система Cu2O–Al2O3–Cr2O3</kwd><kwd>система Cu–Al–Cr–O</kwd><kwd>производство хромовых бронз</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermodynamic modeling</kwd><kwd>Cu2O–Al2O3–Cr2O3 system</kwd><kwd>Cu–Al–Cr–O system</kwd><kwd>chromium bronze production</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Осинцев О.Е., Федоров В.Н. Медь и медные сплавы. Отечественные и зарубежные марки: Справ. М.: Машиностроение, 2004.</mixed-citation><mixed-citation xml:lang="en">Osintsev O.E., Fedorov V.N. Med’ i mednye splavy. Otechestvennye i zarubezhnye marki [Copper and copper alloys. Domestic and foreign brands]. 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