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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2021-10-768-777</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2195</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>ФИЗИКО-ХИМИЧЕСКИЕ ОСНОВЫ МЕТАЛЛУРГИЧЕСКИХ ПРОЦЕССОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICO-CHEMICAL BASICS OF METALLURGICAL PROCESSES</subject></subj-group></article-categories><title-group><article-title>Термодинамический анализ раскислительной способности стронция в жидком железе в присутствии алюминия</article-title><trans-title-group xml:lang="en"><trans-title>Thermodynamic analysis of strontium deoxidizing ability in liquid iron at presence of aluminum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8581-1475</contrib-id><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>Макровец Лариса Александровна - инженер кафедры материаловедения и физико-химии материалов.</p><p>454080, Челябинск, пр. Ленина, 76.</p></bio><bio xml:lang="en"><p>Larisa A. Makrovets - Engineer of the Chair of Materials Science and Physical Chemistry of Materials, South Ural State University.</p><p>76 Lenina Ave., Chelyabinsk 454080.</p></bio><email xlink:type="simple">makrovetcla@susu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9514-3201</contrib-id><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>Самойлова Ольга Владимировна – кандидат химических наук, старший научный сотрудник, доцент кафедры материаловедения и физико-химии материалов.</p><p>454080, Челябинск, пр. Ленина, 76.</p></bio><bio xml:lang="en"><p>Ol'ga V. Samoilova - Cand. Sci. (Chem.), Senior Researcher, Assist. Prof. of the Chair of Materials Science and Physical Chemistry of Materials, South Ural State University.</p><p>76 Lenina Ave., Chelyabinsk 454080.</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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5535-4875</contrib-id><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>Михайлов Геннадий Георгиевич – доктор технических наук, профессор кафедры материаловедения и физико-химии материалов.</p><p>454080, Челябинск, пр. Ленина, 76.</p></bio><bio xml:lang="en"><p>Gennadii G. Mikhailov - Dr. Sci. (Eng.), Prof. of the Chair of Materials Science and Physical Chemistry of Materials, South Ural State University.</p><p>76 Lenina Ave., Chelyabinsk 454080.</p></bio><email xlink:type="simple">mikhailovgg@susu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0825-717X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бакин</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakin</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бакин Игорь Валерьевич - аспирант кафедры материаловедения и физико-химии материалов, ЮУрГУ; начальник отдела инновации, модернизации и технического развития, ООО НПП Технология.</p><p>454080, Челябинск, пр. Ленина, 76; 454901, Челябинск, п. Водрем 40, 25.</p></bio><bio xml:lang="en"><p>Igor' V. Bakin - Postgraduate of the Chair of Materials Science and Physical Chemistry of Materials, South Ural State University, Head of the Division of Innovation, Modernization and Technical Development, LLC SPE Technology.</p><p>76 Lenina Ave., Chelyabinsk 454080; 25 Vodrem Vil. - 40, Chelyabinsk 454901.</p></bio><email xlink:type="simple">igor.npp.bakin@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет; ООО НПП Технология</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University; LLC SPE Technology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2021</year></pub-date><volume>64</volume><issue>10</issue><fpage>768</fpage><lpage>777</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Макровец Л.А., Самойлова О.В., Михайлов Г.Г., Бакин И.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Макровец Л.А., Самойлова О.В., Михайлов Г.Г., Бакин И.В.</copyright-holder><copyright-holder xml:lang="en">Makrovets L.A., Samoilova O.V., Mikhailov G.G., Bakin I.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://fermet.misis.ru/jour/article/view/2195">https://fermet.misis.ru/jour/article/view/2195</self-uri><abstract><p>Впервые построена диаграмма состояния тройной оксидной системы FeO - SrO -Al2O3 , в которой могут образовываться следующие соединения: герцинит FeAl2O4 и пять алюминатов стронция Sr4Al2O7 , Sr3Al2O6 , SrAl2O4 , SrAl4O7 , SrAl12O19 . Согласно проведенным расчетам в этой системе не образуются твердые растворы оксидов, что подтверждается литературными данными. В ходе моделирования подобраны оптимальные энергетические параметры теории субрегулярных ионных растворов для компонентов оксидного расплава (FeO, SrO, Al2O3 ). Термодинамический анализ раскислительной способности стронция в жидком железе в присутствии алюминия проведен с использованием методики построения поверхности растворимости стронция и алюминия в металле для температур сталеварения (1550 и 1600 °С) и концентраций углерода 0,1 и 0,4 %. Рассчитаны константы равновесия реакций образования алюминатов стронция Sr3Al2O6 и SrAl2O4 из компонентов металлического расплава для интервала температур 1550 - 1650 °С. Установлено, что остальные алюминаты стронция могут образовываться в жидком металле только при температурах выше 1750 °С. Приводится база термодинамических данных для изучаемых систем: температурные зависимости констант равновесия реакций, протекающих между компонентами; значения параметров взаимодействия первого порядка (по Вагнеру) для элементов в жидком железе; значения энергетических параметров теории субрегулярных ионных растворов (для оксидного расплава). Из расчетов следует, что в качестве продуктов взаимодействия в системах Fe -Al - Sr - O и Fe - Al - Sr - С - O наиболее вероятно образование моноалюмината стронция SrAl2O4 и корунда Al2O3 .</p></abstract><trans-abstract xml:lang="en"><p>Phase diagram of the ternary oxide system FeO - SrO -Al2O3 was constructed for the first time. In this system, the following compounds can be formed: hercynite FeAl2O4 and five strontium aluminates - Sr4Al2O7 , Sr3Al2O6 , SrAl2O4 , SrAl4O7 , SrAl12O19 . According to the calculations performed, solid solutions of oxides are not formed in the system, as it is confirmed by the literature data. In the course of modeling, the optimal energy parameters of the theory of subregular ionic solutions were selected for the components of the oxide melt (FeO, SrO, Al2O3 ). Thermodynamic analysis of strontium deoxidizing ability in liquid iron at presence of aluminum was carried out using the technique for constructing the surface of solubility of strontium and aluminum in metal for steelmaking temperatures (1550 and 1600 °C) and carbon concentrations of 0.1 and 0.4 %. The equilibrium constants of the reactions of formation of strontium aluminates Sr3Al2O6 and SrAl2O4 from the components of the metal melt were calculated for the temperature range of 1550 - 1650 °C. It was found that the rest of strontium aluminates can be formed in liquid metal only at temperatures above 1750 °C. The base of thermodynamic data for the studied systems is given: temperature dependences of equilibrium constants for reactions occurring between components; values of interaction parameters of the first order (according to Wagner) for elements in liquid iron; values of energy parameters of the theory of subregular ionic solutions (for oxide melt). It follows from the calculations that the formation of strontium monoaluminate SrAl2O4 and corundum Al2O3 is most probable as the interaction products in Fe -Al - Sr - O and Fe -Al - Sr - C - O systems.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термодинамика</kwd><kwd>раскисление</kwd><kwd>стронций</kwd><kwd>алюминий</kwd><kwd>диаграмма состояния</kwd><kwd>моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermodynamics</kwd><kwd>deoxidation</kwd><kwd>strontium</kwd><kwd>aluminum</kwd><kwd>phase diagram</kwd><kwd>modeling</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Правительства РФ (Постановление № 211 от 16.03.2013 г.), соглашение № 02.A03.21.0011.</funding-statement><funding-statement xml:lang="en">The work was supported by the Government of the Russian Federation (Resolution No. 211 of March 16, 2013), agreement No. 02.A03.21.0011.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Gokcen N.A., Chipman J. 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