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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">10.17073/0021-3438-2020-3-4-12</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1127</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>Влияние добавок меди на теплоемкость и термодинамические функции алюминия марки А7Е</article-title><trans-title-group xml:lang="en"><trans-title>The effect of copper additives on the heat capacity and thermodynamic functions of A7E grade aluminum</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>Ganiyev</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор химических наук, акад. АН Респ. Таджикистан, профессор, зав. лабораторией Коррозионно-стойкие материалы.</p><p>734063, Респ. Таджикистан, г. Душанбе, ул. Айни, 299/2</p></bio><bio xml:lang="en"><p>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>Рашидов</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Rashidov</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Старший преподаватель кафедры «Автоматизированный электропривод.</p><p>735162, обл. Хатлон, Бохтариён, ул. Носири Хусрав</p></bio><bio xml:lang="en"><p>Senior teacher of the Department Automated electric drive.</p><p>735162, Khatlon region, Bohtariyon, Nosiri Khusrav str.</p></bio><email xlink:type="simple">rashidov0909@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>Одиназода</surname><given-names>Х. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Odinazoda</surname><given-names>H. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор, чл.-кор. АН Респ. Таджикистан, ректор.</p><p>734042, Душанбе, пр. акад. Раджабовых, 10</p></bio><bio xml:lang="en"><p>Dr. Sci. (Tech.), prof., corr. of Academy of Sciences of the Republic of Tajikistan, rector.</p><p>734042, Dushanbe, Acad. Radjabovs pr., 10</p></bio><email xlink:type="simple">haydar.odinazoda@mail.ru</email><xref ref-type="aff" rid="aff-3"/></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>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-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джайлоев</surname><given-names>Дж. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Jayloev</surname><given-names>J. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Старший научный сотрудник.</p><p>734063, Душанбе, ул. Айни, 299/2</p></bio><bio xml:lang="en"><p>Senior researcher</p></bio><email xlink:type="simple">husenzod85@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии им. В.И. Никитина АН 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>Таджикский технический университет им. М.С. Осими</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Institute of Energy of Tajikistan</institution><country>Tajikistan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт энергетики Таджикистана</institution><country>Таджикистан</country></aff><aff xml:lang="en"><institution>Tajik Technical University n.a. M.S. Osimi</institution><country>Tajikistan</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Физико-технический институт им. С.У Умарова АН 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><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>15</day><month>06</month><year>2020</year></pub-date><volume>0</volume><issue>3</issue><fpage>4</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ганиев И.Н., Рашидов А.Р., Одиназода Х.О., Сафаров А.Г., Джайлоев Д.Х., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Ганиев И.Н., Рашидов А.Р., Одиназода Х.О., Сафаров А.Г., Джайлоев Д.Х.</copyright-holder><copyright-holder xml:lang="en">Ganiyev I.N., Rashidov A.R., Odinazoda H.O., Safarov A.G., Jayloev J.H.</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/1127">https://cvmet.misis.ru/jour/article/view/1127</self-uri><abstract><p>Экономическая целесообразность применения алюминия в качестве проводникового материала объясняется благоприятным соотношением его стоимости (которая в течение многих лет практически не меняется) и стоимости меди. При использовании проводниковых алюминиевых сплавов для изготовления тонкой проволоки, обмоточного провода и др. могут возникнуть определенные сложности в связи с их недостаточной прочностью и малым числом перегибов до разрушения. В последние годы разработаны алюминиевые сплавы, которые даже в мягком состоянии обладают прочностными характеристиками, позволяющими применять их в качестве проводникового материала. Одним из перспективных потребителей алюминия является электротехническая промышленность. Отсюда разработка новых составов сплавов на основе этого металла весьма актуальна. Экспериментально определена температурная зависимость теплоемкости сплавов алюминия марки А7Е с медью и выполнен расчет изменений их термодинамических функций. Исследования проводились в режиме охлаждения с применением компьютерной техники и программы «SigmaPlot». Установлены полиномы температурной зависимости теплоемкости и изменения термодинамических функций (энтальпии, энтропии и энергии Гиббса) указанных сплавов и эталона (Al марки A5N), характеризуемые коэффициентом корреляции Лкорр = 0,992+0,998. Показано, что с ростом содержания меди теплоемкость сплавов алюминия марки А7Е снижается, а с увеличением температуры повышается. Энтальпия и энтропия сплавов алюминия марки А7 с медью с увеличением доли меди уменьшаются, а с ростом температуры повышаются. Для энергии Гиббса характерна обратная зависимость.</p></abstract><trans-abstract xml:lang="en"><p>The economic feasibility of using aluminum as a conductive material is explained by the favorable ratio of its cost to the cost of copper. In addition, one should take into account the factor that the cost of aluminum remains practically unchanged for many years. When using conductive aluminum alloys for the manufacture of thin wire, winding wire, etc. certain difficulties may arise in connection with their insufficient strength and a small number of kinks before fracture. In recent years, aluminum alloys have been developed with strength characteristics that allow them to be used as a conductive material even in a soft state. One of the promising applications of aluminum is the electrical industry. Hence, the development of new alloy compositions based on this metal is very relevant. The temperature dependence of the heat capacity of A7Е grade aluminum alloys with copper was experimentally determined, and changes in their thermodynamic functions were calculated. The studies were carried out in cooling mode using computer hardware and Sigma Plot software. Polynomials were established for the temperature dependence of the heat capacity and changes in thermodynamic functions (enthalpy, entropy, and Gibbs energy) of these alloys and a reference standard (A5N grade Al) characterized by a correlation coefficient Rcorr = 0.992+0.998. It was shown that the heat capacity of A7E grade aluminum decreases with increasing copper content, and increases with rising temperature. The enthalpy and entropy of A7 grade aluminum alloys with copper decrease with increasing copper content, and increase with rising temperature. The value of Gibbs energy is characterized by an inverse relationship.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>алюминий марки А7Е</kwd><kwd>медь</kwd><kwd>эталон (Al марки A5N)</kwd><kwd>теплоемкость</kwd><kwd>режим «охлаждения»</kwd><kwd>энтальпия</kwd><kwd>энтропия</kwd><kwd>энергия Гиббса</kwd></kwd-group><kwd-group xml:lang="en"><kwd>A7E grade aluminum</kwd><kwd>copper</kwd><kwd>reference standard (A5N grade Al)</kwd><kwd>heat capacity</kwd><kwd>«cooling» mode</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">Низомов З., Гулов Б, Ганиев И.Н., Саидов Р.Х., Обидов Ф.У, Эшов Б.Б. Исследование температурной зависимости удельной теплоемкости алюминия марок ОСЧ и А7. Докл. АН Респ. Таджикистан. 2011. Т. 54. No. 1. 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