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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">powder</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Порошковая металлургия и функциональные покрытия</journal-title><trans-title-group xml:lang="en"><trans-title>Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-308X</issn><issn pub-type="epub">2412-8767</issn><publisher><publisher-name>НИТУ "МИСИС"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1997-308X.2025.579P.1049</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-1049</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>Самораспространяющийся высокотемпературный синтез</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Self-Propagating High-Temperature Synthesis (SHS)</subject></subj-group></article-categories><title-group><article-title>Фазообразование на начальных стадиях алюминотермического синтеза ВЭС из смеси оксидов TiO2, ZrO2, V2O5 и Nb2O5</article-title><trans-title-group xml:lang="en"><trans-title>Phase formation at the initial stages of synthesis of HEA from a mixture of oxides TiO2, ZrO2, V2O5 and Nb2O5</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3418-0911</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Русских</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Russkih</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Сергеевич Русских – мл. науч. сотрудник Института металлургии имени академика Н.А. Ватолина Уральского отделения Российской академии наук</p></bio><bio xml:lang="en"><p>Andrey S. Russkih – Junior Research Scientist</p><p>101 Amundsen Str., Ekaterinburg 620016, Russia</p></bio><email xlink:type="simple">russkih_a_s@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/0000-0002-0539-143X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жилина</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhilina</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатерина Михайловна Жилина – к.х.н., ст. науч. сотрудник</p></bio><bio xml:lang="en"><p>Ekaterina M. Zhilina – Cand. Sci. (Chem.), Senior Research Scientist</p><p>101 Amundsen Str., Ekaterinburg 620016, Russia</p></bio><email xlink:type="simple">ezhilina@bk.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/0000-0003-2860-0377</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гуляева</surname><given-names>Р. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gulyaeva</surname><given-names>R. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роза Иосифовна Гуляева – к.х.н., ст. науч. сотрудник</p></bio><bio xml:lang="en"><p>Roza I. Gulyaeva – Cand. Sci. (Chem.), Senior Research Scientist</p><p>101 Amundsen Str., Ekaterinburg 620016, Russia</p></bio><email xlink:type="simple">gulroza@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/0000-0002-1760-2193</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крылов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Андреевич Крылов – к.х.н., науч. сотрудник</p></bio><bio xml:lang="en"><p>Alersey A. Krylov – Cand. Sci. (Chem.), Research Scientist</p><p>101 Amundsen Str., Ekaterinburg 620016, Russia</p></bio><email xlink:type="simple">a020294@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии им. академика Н.А. Ватолина Уральского отделения Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Vatolin Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>27</day><month>08</month><year>2026</year></pub-date><volume>0</volume><issue>0</issue><issue-title>Принято в печать</issue-title><elocation-id>1049</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Русских А.С., Жилина Е.М., Гуляева Р.И., Крылов А.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Русских А.С., Жилина Е.М., Гуляева Р.И., Крылов А.А.</copyright-holder><copyright-holder xml:lang="en">Russkih A.S., Zhilina E.M., Gulyaeva R.I., Krylov A.A.</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://powder.misis.ru/jour/article/view/1049">https://powder.misis.ru/jour/article/view/1049</self-uri><abstract><p>Повышенный интерес к созданию материалов с исключительными свойствами – таких, как высокоэнтропийные сплавы, требует разработки способов их получения, одним из которых является алюминотермический синтез. В настоящей работе исследованы процессы, сопутствующие получению легкого тугоплавкого высокоэнтропийного сплава Al1,5TiZr0,25VNb, для последующего его синтеза алюминотермическим способом из смеси TiO2, ZrO2, V2O5 и Nb2O5. В неизотермических условиях изучено фазообразование при низких температурах (нагрев до 1500 °C) на начальных стадиях восстановления в инертной атмосфере. Методами дифференциально-термического и рентгенографического анализов исследованы взаимодействия в системе с соотношением реагентов, мас. %: 30Al–18TiO –14ZrO2–15V2O5–23 Nb2O5 – при использовании порошков алюминия различной крупности (≤ 0,160 и ≤ 0,630 мкм). Показано, что при непрерывном нагреве порошковой смеси TiO2, ZrO2, V2O5 и Nb2O5 с алюминием крупностью ≤ 0,630 мкм процесс восстановления протекает не полно. На рентгенограмме продуктов зафиксированы исходные ZrO2, TiO2, Nb2O5, непрореагировавший алюминий, а также промежуточные оксиды TiO, V2O3, следы NbO2 и интерметаллическое соединение Al3Ti. Уменьшение размера частиц алюминия (≤ 0,160 мкм) в реакционной смеси повышает полноту протекания экзотермических реакций, снижая температуру их начала. При этом взаимодействие реагентов приводит к образованию в продуктах нагрева интерметаллидов AlTi, AlV3, AlNb3, промежуточных оксидов TiO, V2O3, а также непрореагировавшего ZrO2. Выявлен стадийный характер процесса, для завершения которого необходимо повышение температуры нагрева или проведение изотермической выдержки. Оценка адиабатической температуры показала возможность получения высокоэнтропийного сплава Al1,5TiZr0,25VNb методами самораспространяющегося высокотемпературного синтеза (СВС).</p></abstract><trans-abstract xml:lang="en"><p>Increased interest in the creation of materials with exceptional properties, such as high-entropy alloys, necessitates the develop­ment of production methods, one of which is aluminothermic synthesis. This study investigates the processes involved in the production of the lightweight refractory high-entropy alloy Al1.5TiZr0.25VNb, for subsequent synthesis of this alloy via the joint aluminothermic reduction from a mixture of TiO2 , ZrO2 , V2O5 and Nb2O5 . Under non-isothermal conditions, phase formation at low temperatures (heating up to 1500 °C) in the initial stages of reduction in an inert atmosphere was examined. Differen­tial thermal analysis and X-ray diffraction analysis were employed to study the interactions in the system with a reactant ratio of 30Al–18TiO2–14ZrO2–15V2O5–23Nb2O5 by weight, using aluminum powders of different grain sizes (≤0.160 and ≤0.630 μm). The results indicate that during continuous heating of a powder mixture of TiO2 , ZrO2 , V2O5 , and Nb2O5 with aluminum particles sized ≤0.630 μm, the reduction process remains incomplete. The X-ray diffraction pattern of the products reveals the presence of initial charge components ZrO2 , TiO2 , Nb2O5 , unreacted aluminum, as well as intermediate oxides TiO, V2O3 , traces of NbO2 , and the intermetallic compound Al3Ti. Reducing the aluminum particle size to ≤0.160 μm enhances the completeness of exothermic reactions and lowers their onset temperature. Furthermore, the interaction of reactants leads to the formation of intermetallic compounds AlTi, AlV3 , AlNb3 , intermediate oxides TiO, V2O3 , and unreacted ZrO2 among the heating products. Joint aluminothermic reduction going through several stages and requiring an increase in heating tempera­ture or isothermal holding to complete. An adiabatic temperature assessment demonstrated the feasibility of obtaining the high-entropy Al1.5TiZr0.25VNb alloy using self-propagating high-temperature synthesis (SHS) methods.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэнтропийный сплав</kwd><kwd>алюминотермический синтез</kwd><kwd>начальные стадии восстановления</kwd><kwd>дифференциально-термический анализ</kwd><kwd>фазообразование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>high entropy alloy</kwd><kwd>aluminothermic synthesis</kwd><kwd>initial stages reduction</kwd><kwd>differential thermal analysis</kwd><kwd>phase formation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по государственному заданию ИМЕТ УрО РАН с использованием оборудования ЦКП «Урал-М».</funding-statement><funding-statement xml:lang="en">The work was carried out according to the state assignment for IMET UB RAS using equipment of the Collaborative usage centre “Ural-M”.</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">Li G., Wu Z., Dong Y., Hu Z., Jia Y., Wu S., Mu Y., Sun K., Jia Y., Wang G. 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