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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">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8331-2024-60-2-105-114</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-876</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>ФИЗИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Фазовая диаграмма системы LiCl-PrCl3-KCl эвтектического типа с выклинивающимся ликвидусом бинарного соединения</article-title><trans-title-group xml:lang="en"><trans-title>Phase diagram of the eutectic type LiCl-PrCl3-KCl system with wedging liquidus of binary compound</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>Парфенова</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Parfenova</surname><given-names>М. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парфенова Мария Дмитриевна – аспирант</p><p>ул. Сахьяновой, 6, Улан-Удэ, Республика Бурятия</p></bio><bio xml:lang="en"><p>Parfenova Maria D. – Postgraduate Student</p><p>6, Sakhyanova Str., Ulan-Ude, Republic of Buryatia</p><p> </p></bio><email xlink:type="simple">krygentul@gmail.com</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>Воробьева</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorob’eva</surname><given-names>V. Р.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Воробьева Вера Павловна – доктор физико-математических наук, доцент, ведущий научный сотрудник</p><p>ул. Сахьяновой, 6, Улан-Удэ, Республика Бурятия</p></bio><bio xml:lang="en"><p>Vorob’eva Vera P. – Dr. Sc. (Physics and Mathematics), Associate Professor, Leading researcher</p><p>6, Sakhyanova Str., Ulan-Ude, Republic of Buryatia</p></bio><email xlink:type="simple">vvorobjeva@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>Луцык</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Lutsyk</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Луцык Василий Иванович – доктор химических наук, профессор, заведующий сектором</p><p>ул. Сахьяновой, 6, Улан-Удэ, Республика Бурятия</p></bio><bio xml:lang="en"><p>Lutsyk Vasily I. – Dr. Sc. (Chemistry), Professor, Head of the sector</p><p>6, Sakhyanova str., Ulan-Ude, Republic of Buryatia</p></bio><email xlink:type="simple">vluts@ipms.bscnet.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>Зеленая</surname><given-names>А. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Zelenaya</surname><given-names>А. Е.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зеленая Анна Эдуардовна – кандидат физико-математических наук, старший научный сотрудник</p><p>ул. Сахьяновой, 6, Улан-Удэ, Республика Бурятия, </p></bio><bio xml:lang="en"><p>Zelenaya Anna E. – Ph. D. (Physics and Mathematics), Senior researcher</p><p>6, Sakhyanova Str., Ulan-Ude, Republic of Buryatia</p></bio><email xlink:type="simple">zel_ann@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>Балданов</surname><given-names>В. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Baldanov</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балданов Виктор Дашиевич – аспирант</p><p>ул. Сахьяновой, 6, Улан-Удэ, Республика Бурятия</p></bio><bio xml:lang="en"><p>Baldanov Victor D. – Postgraduate Student</p><p>6, Sakhyanova Str., Ulan-Ude, Republic of Buryatia</p></bio><email xlink:type="simple">victor_baldanov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физического материаловедения Сибирского отделения Российской академии наук</institution></aff><aff xml:lang="en"><institution>Institute of Physical Materials Science Siberian Branch of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>24</day><month>05</month><year>2024</year></pub-date><volume>60</volume><issue>2</issue><fpage>105</fpage><lpage>114</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Парфенова М.Д., Воробьева В.П., Луцык В.И., Зеленая А.Э., Балданов В.Д., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Парфенова М.Д., Воробьева В.П., Луцык В.И., Зеленая А.Э., Балданов В.Д.</copyright-holder><copyright-holder xml:lang="en">Parfenova М.D., Vorob’eva V.Р., Lutsyk V.I., Zelenaya А.Е., Baldanov V.D.</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://vestichem.belnauka.by/jour/article/view/876">https://vestichem.belnauka.by/jour/article/view/876</self-uri><abstract><p>По опубликованным экспериментальным данным (фазовым диаграммам трех бинарных систем, четырем изотермическим разрезам и термограммам 33 сплавов) построена пространственная (трехмерная – 3D) компьютерная модель фазовой диаграммы LiCl-PrCl3-KCl. Показано, что в общем случае ее формируют 66 поверхностей и 27 фазовых областей, однако вследствие пренебрежимо малой растворимости исходных хлоридов и стехиометричности двух бинарных соединений в реальности она состоит из 31 поверхности и 14 фазовых областей. Оценкой качества полученной 3D-модели служит сравнение модельных и исходных изотермических разрезов и расчет функций отклика для 33 сплавов со значениями температур на границах областей первичной кристаллизации, приведенными на термограммах. Геометрическое строение фазовой диаграммы LiCl-PrCl3-KCl рассматривается также как иллюстрация особенностей тройных систем эвтектического типа в зависимости от природы образующихся в них двойных соединений.</p></abstract><trans-abstract xml:lang="en"><p>Based on the published experimental data (phase diagrams of three binary systems, four isothermal sections and DTA curves of 33 alloys), a spatial (three-dimensional – 3D) computer model of the LiCl-PrCl3-KCl phase diagram has been constructed. It is shown that, in the general case, the diagram is formed by 66 surfaces and 27 phase regions; however, due to the negligible solubility of the initial chlorides and the stoichiometry of the two binary compounds in reality, it consists of 31 surfaces and 14 phase regions. The evaluation of the quality of the obtained 3D model is a comparison of model and initial isothermal sections and calculation of response functions for 33 alloys with temperature values at the boundaries of the primary crystallization regions shown on DTA traces. The geometric structure of the LiCl-PrCl3-KCl phase diagram is also considered as an illustration of the features of ternary systems of the eutectic type, depending on the nature of the formed in them binary compounds.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фазовые диаграммы</kwd><kwd>компьютерное моделирование</kwd><kwd>хлориды лития</kwd><kwd>празеодима</kwd><kwd>калия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phase diagrams</kwd><kwd>computer simulation</kwd><kwd>lithium</kwd><kwd>praseodymium</kwd><kwd>potassium chlorides</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в соответствии с госзаданием ФГБУН ИФМ СО РАН, проект № 0270-2021-0002.</funding-statement><funding-statement xml:lang="en">This work has was been performed under the program of fundamental research SB RAS (project 0270-2021-0002).</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">Двойная система LiCl-KCl / А. 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