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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-2025-5-36-50</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-1037</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>Применение политетрафторэтилена в азидном самораспространяющемся высокотемпературном синтезе высокодисперсной смеси керамических порошков TiN–SiC</article-title><trans-title-group xml:lang="en"><trans-title>Polytetrafluoroethylene-activated azide self-propagating high-temperature synthesis of a highly dispersed TiN–SiC powder composition</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3023-3289</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Уварова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Uvarova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Александровна Уварова – инженер кафедры «Металловедение, порошковая металлургия, наноматериалы» (МПМН)</p><p>Россия, 443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Irina A. Uvarova – Engineer of the Department of Metallurgy, Powder Metallurgy, Nanomaterials (MPMN)</p><p>244 Molodogvardeiskaya Str., Samara 443100, Russia</p></bio><email xlink:type="simple">mr.simple2@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/0000-0003-1994-5672</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амосов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Amosov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Петрович Амосов – д.ф.-м.н., профессор, заведующий кафедрой МПМН</p><p>Россия, 443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Aleksandr P. Amosov – Dr. Sci. (Phys.-Math.), Professor, Head of the Department of MPMN</p><p>244 Molodogvardeiskaya Str., Samara 443100, Russia</p></bio><email xlink:type="simple">egundor@yandex.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/0000-0001-6292-280X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титова</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Titova</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Владимировна Титова – к.т.н., доцент кафедры МПМН</p><p>Россия, 443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Yuliya V. Titova – Cand. Sci. (Eng.), Associate Professor of the Department of MPMN</p><p>244 Molodogvardeiskaya Str., Samara 443100, Russia</p></bio><email xlink:type="simple">titova600@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/0009-0005-6679-7133</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермошкин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermoshkin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антон Александрович Ермошкин – к.т.н., начальник Испытательного центра</p><p>Россия, 443001, г. Самара, ул. Ульяновская/Ярмарочная, 52/55</p></bio><bio xml:lang="en"><p>Anton A. Ermoshkin – Cand. Sci. (Eng.), Head of the Testing Center</p><p>52/55 Ulyanovskaya/Yarmarochnaya Str., Samara 443001, Russia</p></bio><email xlink:type="simple">nerev89@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «ИТ-Сервис»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>IT-Service LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>05</day><month>11</month><year>2025</year></pub-date><volume>19</volume><issue>5</issue><fpage>36</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Уварова И.А., Амосов А.П., Титова Ю.В., Ермошкин А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Уварова И.А., Амосов А.П., Титова Ю.В., Ермошкин А.А.</copyright-holder><copyright-holder xml:lang="en">Uvarova I.A., Amosov A.P., Titova Y.V., Ermoshkin 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/1037">https://powder.misis.ru/jour/article/view/1037</self-uri><abstract><p>Карбид кремния (SiC) и нитрид титана (TiN) относятся к широко используемым неоксидным керамическим материалам с малой плотностью и высокими значениями температуры плавления, твердости, износостойкости, жаропрочности, коррозионной стойкости. Однако керамика из однофазного карбида кремния имеет ряд недостатков, препятствующих ее более широкому применению. Наиболее важная причина создания композиционной керамики TiN–SiC заключается в добавлении электропроводной фазы TiN в неэлектропроводную фазу карбида кремния для существенного снижения его высокого удельного электрического сопротивления с улучшением при этом спекаемости, физических и механичес­ких свойств композиционной керамики на основе SiC. Работа посвящена усовершенствованию простого энерго­сберегающего метода азидного самораспространяющегося высокотемпературного синтеза (СВС) композиций высокодисперсных (&lt;1 мкм) порошков TiN–SiC из смесей исходных порошковых реагентов (шихт) азида натрия (NaN3 ), титана, кремния и углерода за счет использования активирующей и карбидизирующей добавки порошкового политетрафторэтилена (ПТФЭ). Эти шихты в насыпном и прессованном виде сжигались в реакторе с давлением газообразного азота 3 МПа. Измерялись максимальное давление и выход твердых продуктов горения. С применением сканирующей электронной микроскопии и рентгенофазового анализа определялись морфология и фазовый состав продуктов горения. Использование добавки ПТФЭ позволило устранить недостатки традиционного азидного СВС композиций TiN–SiC с применением галоидных солей (NH4)2TiF6 , Na2SiF6 и (NH4)2SiF6 . При сохранении высокой дисперсности синтезированных композиций порошков TiN–SiC их фазовый состав стал значительно ближе к теоретическому составу, существенно увеличилось содержание карбида кремния в синтезированном продукте TiN–SiC при уменьшении содержания или полном устранении примеси побочной фазы нитрида кремния Si3N4 .</p></abstract><trans-abstract xml:lang="en"><p>Silicon carbide (SiC) and titanium nitride (TiN) are widely used non-oxide ceramics characterized by low density and high melting point, hardness, wear resistance, high-temperature strength, and corrosion resistance. However, single-phase silicon carbide ceramics have a number of drawbacks that limit their wider application. The main reason for developing TiN–SiC composite ceramics lies in the introduction of an electrically conductive TiN phase into the electrically non-conductive silicon carbide phase, which makes it possible to significantly reduce the high specific electrical resistivity of SiC while improving the sinterability, as well as the physical and mechanical properties of SiC-based composite ceramics. This study focuses on improving a simple and energy-efficient method of azide self-propagating high-temperature synthesis (SHS) for producing highly dispersed (&lt;1 μm) TiN–SiC powder compositions from charge mixtures consisting of sodium azide (NaN3 ), titanium, silicon, and carbon powders, through the use of powdered polytetrafluoroethylene (PTFE) as an activating and carbiding additive. The bulk and pressed charges were combusted in a reactor under a nitrogen pressure of 3 MPa. The maximum pressure and the yield of solid combustion pro­ducts were measured. The morphology and phase composition of the combustion products were determined using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The use of the PTFE additive eliminated the shortcomings of the traditional azide SHS of TiN–SiC compositions involving halide salts ((NH4 )2TiF6 , Na2SiF6 , and (NH4 )2SiF6 ). While maintaining the high dispersity of the synthesized TiN–SiC powder compositions, their phase composition became much closer to the theoretical one: the silicon carbide content in the synthesized TiN–SiC product increased substantially, while the amount of the secondary phase of silicon nitride (Si3N4 ) decreased or was completely eliminated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нитрид титана</kwd><kwd>карбид кремния</kwd><kwd>композиции порошков</kwd><kwd>самораспространяющийся высокотемпературный синтез</kwd><kwd>азид натрия</kwd><kwd>политетрафторэтилен</kwd><kwd>продукты горения</kwd><kwd>состав</kwd><kwd>структура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>titanium nitride</kwd><kwd>silicon carbide</kwd><kwd>powder compositions</kwd><kwd>self-propagating high-temperature synthesis (SHS)</kwd><kwd>sodium azide</kwd><kwd>polytetrafluoroethylene (PTFE)</kwd><kwd>combustion products</kwd><kwd>composition</kwd><kwd>structure</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Российского научного фонда в рамках гранта № 23-29-00680.</funding-statement><funding-statement xml:lang="en">The work was supported by the Russian Science Foundation under grant No. 23-29-00680.</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">Kim Y.-W., Malik R. 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