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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-2023-3-14-21</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-823</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>Тепловой взрыв в смесях (Ti, Zr, Hf, Nb, Ta) с углеродом</article-title><trans-title-group xml:lang="en"><trans-title>Thermal explosions in (Ti, Zr, Hf, Nb, Ta) carbon mixtures</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2360-2114</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вадченко</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vadchenko</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Георгиевич Вадченко – к.ф.-м.н., вед. науч. сотрудник лаборатории динамики микрогетерогенных процессов</p><p>Россия, 142432, Московская обл., г. Черноголовка, ул. Акад. Осипьяна, 8</p></bio><bio xml:lang="en"><p>Sergey G. Vadchenko – Cand. Sci. (Phys.-Math.), Leading Researcher, Microheterogenic Process Dynamics Laboratory</p><p>8 Akademik Osipyan Str., Chernogolovka, Moscow region 142432, Russia</p></bio><email xlink:type="simple">vadchenko@ism.ac.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/0000-0002-4927-8930</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Седегов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sedegov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Сергеевич Седегов – инженер НИЦ «Конструкционные керамические наноматериалы»</p><p>Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Aleksei S. Sedegov – Engineer, Structural Nanoceramics Research Center</p><p>4 bld. 1 Leninskiy Prosp., Moscow 119049, Russia</p></bio><email xlink:type="simple">a.sedegov@misis.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4710-837X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковалев</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalev</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иван Дмитриевич Ковалев – к.ф.-м.н., ст. науч. сотрудник лаборатории рентгеноструктурных исследований</p><p>Россия, 142432, Московская обл., г. Черноголовка, ул. Акад. Осипьяна, 8</p></bio><bio xml:lang="en"><p>Ivan D. Kovalev – Cand. Sci. (Phys.-Math.), Senior Researcher, X-Ray Structural Research Laboratory</p><p>8 Akademik Osipyan Str., Chernogolovka, Moscow region 142432, Russia</p></bio><email xlink:type="simple">i2212@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова РАН<country>Россия</country></aff><aff xml:lang="en">Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Национальный исследовательский технологический университет «МИСИС»<country>Россия</country></aff><aff xml:lang="en">National University of Science and Technology “MISIS”<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>09</month><year>2023</year></pub-date><volume>17</volume><issue>3</issue><fpage>14</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">НИТУ "МИСИС"</copyright-holder><copyright-holder xml:lang="en">НИТУ "МИСИС"</copyright-holder><license xlink:href="https://powder.misis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://powder.misis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://powder.misis.ru/jour/article/view/823">https://powder.misis.ru/jour/article/view/823</self-uri><abstract><p>В работе исследованы закономерности воспламенения и теплового взрыва механически активированных смесей (Ti, Zr, Hf, Nb, Ta) + 5C. Их готовили в 2 этапа – вначале проводили механическую активацию смесей порошков металлов для получения композитных частиц Ti, Zr, Hf, Nb, Ta, затем добавляли углерод и проводили дополнительную активацию. При активации в течение 120 мин при скорости вращения барабанов 347 об/мин формировались твердые растворы на основе входящих в состав металлов и оставались крупные частицы тантала. Из полученных смесей прессовали таблетки, которые нагревали в атмосфере аргона до воспламенения. Процесс воспламенения включает в себя несколько стадий. На первой стадии происходит инертный нагрев. При t = 420÷450 ºC начинается прогрессивный разогрев образца до температур 750–770 °C, при которых происходит фазовый переход, сопровождающийся эндотермическим эффектом. После фазового перехода температура резко повышается, и происходит тепловой взрыв, в результате чего формируются сложные карбиды и остается непрореагировавший тантал. Активированная смесь и высокоэнтропийный твердый раствор (Ti, Zr, Hf, Nb, Ta) C5 нестабильны, и при нагреве выше 1300 °C из них выделяются карбиды. При этом изменяется состав твердого раствора (Ti, Zr, Hf, Nb, Ta)C5 . С использованием последнего для разбавления активированной смеси на 25 % и 50 % для реакции (Ti, Zr, Hf, Nb, Ta) + 5C в интервале температур 1100–1580 °C была определена эффективная энергия активации Eа = 34 кДж/моль.</p></abstract><trans-abstract xml:lang="en"><p>This research focuses on investigating the ignition and thermal explosion behavior of (Ti, Zr, Hf, Nb, Ta) + 5C mixtures that have been mechanically activated. First, we mechanically activated the metal powder mixtures to produce composite particles consisting of Ti, Zr, Hf, Nb, and Ta, followed by the addition of carbon, and re-activation. An activation time of 120 min at 347 rpm resulted in the formation of solid solutions from the metals in the mixture, while large tantalum particles were preserved. The resulting mixtures were then pressed into pellets, which were heated in argon until ignition occurred. The ignition process involves multiple phases, with the first being inert heating, followed by progressive heating at t = 420÷450 °C, and a  subsequent endothermic phase transformation at 750–770 °C. The temperature then rises rapidly, resulting in a thermal explosion that forms complex carbides, leaving some unreacted tantalum behind. The (Ti, Zr, Hf, Nb, Ta)C5 activated mixtures and high entropy solid solution are unstable and  release titanium and zirconium carbides when heated above 1300 °C, causing changes to the composition of the (Ti, Zr, Hf, Nb, Ta)C5 final product. When diluted by adding 25 and 50 % of the final product, the effective activation energy Ea for the (Ti, Zr, Hf, Nb, Ta) + 5C reaction in the 1100–1580 °C temperature range was found to be 34 kJ/mol.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэнтропийные сплавы</kwd><kwd>высокоэнтропийные карбиды</kwd><kwd>керамика</kwd><kwd>механическое активирование</kwd><kwd>тепловой взрыв</kwd></kwd-group><kwd-group xml:lang="en"><kwd>high-entropy alloys</kwd><kwd>high-entropy carbides</kwd><kwd>ceramics</kwd><kwd>mechanical activation</kwd><kwd>thermal explosion</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">Akrami S., Edalati P., Fuji M., Edalati K. High-entropy ceramics: Review of principles, production and applications. 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