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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-2022-4-25-33</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-743</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>Теория и процессы формования и спекания порошковых материалов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Theory and Processes of Formation and Sintering of Powder Materials</subject></subj-group></article-categories><title-group><article-title>Синтез MAX-фазы Ti2AlN реакционным спеканием в вакууме</article-title><trans-title-group xml:lang="en"><trans-title>MAX phase Ti2AlN synthesis by reactive sintering in vacuum</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>Линде</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Linde</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. хим. наук, ст. науч. сотр. науч.-иссл. лаборатории «Макрокинетики процессов СВС в реакторах» </p><p>142432, Московская обл., Ногинский р-н, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p> Cand. Sci. (Chem.), senior researcher of the Laboratory of macrokinetics of SHS-processes in chambers</p><p>142432,  Moscow Region, Noginsk district, Academician Osip’yan str., 8 </p></bio><email xlink:type="simple">alex-linde@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>Кондаков</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondakov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> науч. сотр. науч.-иссл. лаборатории «Макрокинетики процессов СВС в реакторах» </p><p>142432, Московская обл., Ногинский р-н, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p> researcher of the Laboratory of macrokinetics of SHS-processes in chambers  </p><p>142432,  Moscow Region, Noginsk district, Academician Osip’yan str., 8 </p></bio><email xlink:type="simple">kondakov_aleks@list.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>Студеникин</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Studenikin</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> науч. сотр. науч.-иссл. лаборатории «Макрокинетики процессов СВС в реакторах»</p><p>142432, Московская обл., Ногинский р-н, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p> researcher of the Laboratory of macrokinetics of SHS-processes in chambers  </p><p>142432,  Moscow Region, Noginsk district, Academician Osip’yan str., 8 </p></bio><email xlink:type="simple">stivan@bk.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>Кондакова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondakova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> мл. науч. сотр. науч.-иссл. лаборатории «Макрокинетики процессов СВС в реакторах»</p><p>142432, Московская обл., Ногинский р-н, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p> junior researcher of the Laboratory of macrokinetics of SHS-processes in chambers </p><p>142432,  Moscow Region, Noginsk district, Academician Osip’yan str., 8 </p></bio><email xlink:type="simple">natik1985@bk.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>Грачев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grachev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. физ.-мат. наук, вед. науч. сотр., зав. науч.-иссл. лабораторией «Макрокинетики процессов СВС в реакторах» </p><p>142432, Московская обл., Ногинский р-н, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p> Cand. Sci. (Phys.-Math.), leading researcher, head of the Laboratory of macrokinetics of SHS-processes in chambers </p><p>142432,  Moscow Region, Noginsk district, Academician Osip’yan str., 8 </p></bio><email xlink:type="simple">grachev@ism.ac.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова РАН (ИСМАН)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences (ISMAN)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>08</day><month>12</month><year>2022</year></pub-date><volume>0</volume><issue>4</issue><fpage>25</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2022</copyright-statement><copyright-year>2022</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/743">https://powder.misis.ru/jour/article/view/743</self-uri><abstract><p>Проведены исследования процесса синтеза MAX-фазы Ti2AlN спеканием в вакууме различных смесей порошков в зависимости от фазового состава исходных реагентов и режимов их термической обработки в вакуумной электропечи. На примере смеси порошков титана и нитрида алюминия в мольном соотношении Ti : AlN = 2 : 1 (состав 1) прослежена последовательность изменения фазового состава смеси при увеличении температуры изотермической выдержки длительностью 60 мин при t = 1100÷1500 °С с шагом 100 °С и определено значение температуры 1400 °С, при которой в продуктах спекания достигается максимальное значение содержания MAX-фазы Ti2AlN – 94 мас.%. При этой температуре изотермической выдержки для исходной смеси TiAl : TiN = 1 : 1 (состав 2) содержание MAX-фазы составило 93 мас.%. Наилучший результат по синтезу MAX-фазы (100 мас.% Ti2AlN) был получен для смеси Ti : Al : TiN = 1 : 1 : 1 (состав 3). На примере смеси данного состава массой 500 г при определенном режиме термовакуумной обработки экспериментально показана принципиальная возможность масштабирования процесса получения однофазного продукта состава Ti2AlN спеканием в вакууме. Эксперименты проводились с двумя типами образцов: с закрытой и открытой боковой поверхностью. К образцам с закрытой боковой поверхностью относились образцы в кварцевых трубках, заполненных исходной смесью порошков с насыпной плотностью, и образец массой 500 г, помещенный в молибденовый тигель с крышкой. Образцы с открытой боковой поверхностью – это цилиндрические таблетки, спрессованные из исходной порошковой смеси. Было показано, что закрытие боковой поверхности образца из смеси Ti : Al : TiN (состав 3) блокирует выход паров алюминия из порового пространства образца при нагреве, благодаря чему образуется только Ti2AlN.</p></abstract><trans-abstract xml:lang="en"><p>The synthesis of MAX phase Ti2AlN from several mixtures of Ti, Al, TiN, and AlN powders by vacuum sintering of greensamples in the form of dense compacts, bulk powder in silica tubes, and plain layer in a closed rectangular molybdenum boat was studied upon variation in charge composition and sintering temperature Ts. The sintering of 2 : 1 Ti–AlN mixture was carried out at 1100, 1200, 1300, 1400, and 1500 °С with exposure time of 60 min. The largest MAX phase content (94 wt.%) was reached at Ts = 1400 °С. The sintering of 1 : 1 TiAl : TiN composition at the same temperature gave 93 wt.% Ti2AlN. The best result (singlephase Ti2AlN in a 100-% yield) was achieved upon the sintering of 1 : 1 : 1 Ti–Al–TiN composition at Ts = 1400 °С. The scalability of our process was checked by the fabrication of a large (0.5 kg) and uniform cake of single-phase Ti2AlN. In experiments we used green samples with shielded lateral surface (bulk powder in silica tubes, plain layer in a closed molybdenum boat) and without shield (dense compacts). It has been shown that shielding of Ti–Al–TiN samples restricts the escape of Al vapor from a sintered mixture, thus providing more favorable conditions for the synthesis of single-phase Ti2AlN. Our process can be readily recommended for practical implementation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>MAX-фаза</kwd><kwd>спекание</kwd><kwd>фазовые превращения</kwd><kwd>рентгенофазовый анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>MAX phase</kwd><kwd>sintering</kwd><kwd>phase transitions</kwd><kwd>X-ray diffraction</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">Barsoum M., Brodkin D., El-Raghy T. Layered machinable ceramics for high temperature applications. Scri. Mater. 1997. Vol. 36. No. 5. P. 535—541. DOI: 10.1016/S1359-6462(96)00418-6.</mixed-citation><mixed-citation xml:lang="en">Barsoum M., Brodkin D., El-Raghy T. Layered machinable ceramics for high temperature applications. Scri. Mater. 1997. Vol. 36. No. 5. P. 535—541. 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