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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">10.17073/0021-3438-2019-1-50-58</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-866</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 Non-Ferrous Metals</subject></subj-group></article-categories><title-group><article-title>Температурная зависимость теплоемкости и изменение термодинамических функций сплава АЖ4.5 с оловом</article-title><trans-title-group xml:lang="en"><trans-title>Temperature dependence of specific heat and thermodynamic functions of Al + 4,5 % Fe alloys doped with tin</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>Ганиев</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ganiev</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор химических наук, академик АН Респ. Таджикистан, профессор, заведующий лабораторией «Коррозионно-стойкие материалы».</p><p>734063, Душанбе, ул. Айни, 299/2</p></bio><bio xml:lang="en"><p>Ganiev I.N. — Dr. Sci. (Chem.), acad. of the Academy of Sciences of the Republic of Tajikistan, prof., head of Laboratory «Corrosion-resistant materials».</p><p>734063, Dushanbe, Aini str., 299/2</p></bio><email xlink:type="simple">ganiev48@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>Сафаров</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Safarov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат химических наук, ведущий научный сотрудник.</p><p>734064, Душанбе, ул. Айни, 299/1</p></bio><bio xml:lang="en"><p>Safarov A.G. — Cand. Sci. (Chem.), leading researcher.</p><p>734064, Dushanbe, Aini str., 299/1</p></bio><email xlink:type="simple">amirsho71@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Одинаев</surname><given-names>Ф. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Odinaev</surname><given-names>F. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ведущий научный сотрудник.</p><p>Душанбе</p></bio><bio xml:lang="en"><p>Odinaev F.R. — leading researcher.</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якубов</surname><given-names>У. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakubov</surname><given-names>U. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Докторант.</p><p>Душанбе</p></bio><bio xml:lang="en"><p>Yakubov U.Sh. — PhD student.</p></bio><email xlink:type="simple">yakubovumarali@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кабутов</surname><given-names>К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kabutov</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Руководитель Центра исследования и использования возобновляемых источников энергии.</p><p>Душанбе</p></bio><bio xml:lang="en"><p>Kabutov K. — head of the Centre for research and use of renewable energy.</p><p>Dushanbe</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии им. В.И. Никитина, Академия наук Респ.Таджикистан</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Institute of Chemistry n.a. V.I. Nikitin of the Academy of Sciences of the Republic of Tajikistan</institution><country>Tajikistan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Физико-технический институт им. С.У Умарова,  Академия наук Респ. Таджикистан</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Physical-Technical Institute n.a. S .U. Umarov of the Academy of Sciences of the Republic of Tajikistan</institution><country>Tajikistan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Физико-технический институт им. С.У Умарова,  Академия наук Респ. Таджикистан</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Physical-Technical Institute n.a. S.U. Umarov of the Academy of Sciences of the Republic of Tajikistan</institution><country>Tajikistan</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт химии им. В.И. Никитина, Академия наук Респ.Таджикистан</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Institute of Chemistry n.a. V.I. Nikitin of Academy of Sciences of the Republic of Tajikistan</institution><country>Tajikistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>22</day><month>02</month><year>2019</year></pub-date><volume>0</volume><issue>1</issue><fpage>50</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ганиев И.Н., Сафаров А.Г., Одинаев Ф.Р., Якубов У.Ш., Кабутов К., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Ганиев И.Н., Сафаров А.Г., Одинаев Ф.Р., Якубов У.Ш., Кабутов К.</copyright-holder><copyright-holder xml:lang="en">Ganiev I.N., Safarov A.G., Odinaev F.R., Yakubov U.S., Kabutov K.</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://cvmet.misis.ru/jour/article/view/866">https://cvmet.misis.ru/jour/article/view/866</self-uri><abstract><p>Известно, что технический алюминий с повышенным содержанием железа, кремния и других примесей из-за низких эксплуатационных характеристик не может найти применение в промышленности. Отсюда разработка новых составов сплавов на основе такого металла весьма актуальна. На диаграмме Al—Fe перспективными являются эвтектика (a-Al + + Al3Fe) и заэвтектические составы, которые, имея минимальный интервал кристаллизации, соответствуют содержанию железа 2—5 мас.%. Сплав состава Al + 4,5 % Fe (АЖ4.5) был принят нами в качестве модельного и подвергался модифицированию оловом. Была экспериментально определена температурная зависимость теплоемкости сплава АЖ4.5, легированного оловом, и выполнен расчет изменений его термодинамических функций. Исследования проводились в режиме охлаждения с применением компьютерной техники и программы «Sigma Plot». Установлены полиномы температурной зависимости теплоемкости и изменения термодинамических функций (энтальпии, энтропии и энергии Гиббса) сплава АЖ4.5, легированного оловом, и эталона (Cu), характеризуемые коэффициентом корреляции Rкорр = 0,999. Установлено, что с ростом содержания олова теплоемкость исходного сплава уменьшается, а с увеличением температуры — повышается. Энтальпия и энтропия сплава АЖ4.5 с ростом содержания олова и температуры растут, а значения энергии Гиббса — снижаются.</p></abstract><trans-abstract xml:lang="en"><p>It is known that commercial aluminum with a high content of iron, silicon and other impurities has no industrial application because of low performance. Hence, the development of new alloy compositions based on such a metal is a very urgent task. Promising compositions in the Al—Fe diagram are the (a-Al + A3Fe) eutectic and hypereutectic compositions that correspond to an iron content of 2—5 wt.% due to a minimum range of crystallization temperature. An alloy with the composition Al + 4,5 % Fe (AlFe4,5) was taken as a model alloy and subjected to modification with tin. The paper experimentally determined the dependence of specific heat of the Al + 4,5 % Fe alloy doped with tin with the calculation of changes in its thermodynamic functions. Studies were carried out in a «cooling» mode using computer equipment and the Sigma Plot program. The polynomials of the temperature dependence of the specific heat and changes in thermodynamic functions (enthalpy, entropy, and Gibbs energies) were determined for Al + 4,5 % Fe alloys doped with tin and basic reference standard (Cu) defined by the correlation coefficient Rcorr = 0,999. It was found that the heat capacity of the initial alloy decreases with an increasing tin content and increases as temperature rises. The enthalpy and entropy of the Al + 4,5 % Fe alloy increase with rising tin content and temperature, while the Gibbs energy decreases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплав АЖ4.5</kwd><kwd>олово</kwd><kwd>режим охлаждения</kwd><kwd>теплоемкость</kwd><kwd>термодинамические функции</kwd><kwd>энтальпия</kwd><kwd>энтропия</kwd><kwd>энергия Гиббса</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Al + 4</kwd><kwd>5 % Fe alloy</kwd><kwd>tin</kwd><kwd>cooling mode</kwd><kwd>specific heat capacity</kwd><kwd>thermodynamic functions</kwd><kwd>enthalpy</kwd><kwd>entropy</kwd><kwd>Gibbs energy</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">Луц А.Р., Суслина А.А. Алюминий и его сплавы. Самара: Самарский гос. техн. ун-т, 2013.</mixed-citation><mixed-citation xml:lang="en">Luts A.R., Suslina A.A. Alyuminy and his alloys. 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