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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-2023-2-46-52</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-786</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>Тугоплавкие, керамические и композиционные материалы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Refractory, Ceramic, and Composite Materials</subject></subj-group></article-categories><title-group><article-title>Микроструктура ядро/обод в керметах Ti(C, N) при дефиците никель-молибденовой связки</article-title><trans-title-group xml:lang="en"><trans-title>Core/rim microstructure of Ti(C, N) cermets with low nickel-molybdenum binder content</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1906-7654</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григоров</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigorov</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Георгиевич Григоров – кандидат химических наук, ведущий научный сотрудник лаборатории структурного и фазового анализа, Институт химии твердого тела УрО РАН (ИХТТ УрО РАН).</p><p>620990, Екатеринбург, ул. Первомайская, 91</p></bio><bio xml:lang="en"><p>Igor’ G. Grigorov – Cand. Sci. (Chem.), Research Scientist of Laboratory of Structural and Phase Analysisю ISSC UB RAS.</p><p>91 Pervomayskaya Str., Yekaterinburg 620990</p></bio><email xlink:type="simple">igor.grigorov2012@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/0000-0003-1906-7654</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жиляев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhilyaev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Александрович Жиляев – доктор технических наук, ИХТТ УрО РАН</p><p>620990, Екатеринбург, ул. Первомайская, 91</p></bio><bio xml:lang="en"><p>Viktor. A. Zhilyaev – Dr. Sci. (Eng.), ISSC UB RAS.</p><p>91 Pervomayskaya Str., Yekaterinburg 620990</p></bio><email xlink:type="simple">igor.grigorov2012@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии твердого тела Уральского отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of solid state chemistry, Ural branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>06</day><month>06</month><year>2023</year></pub-date><volume>17</volume><issue>2</issue><fpage>46</fpage><lpage>52</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/786">https://powder.misis.ru/jour/article/view/786</self-uri><abstract><p>По результатам, полученным ранее в работах по безвольфрамовым твердым сплавам (БВТС) марок КНТ3 и КНТ7, проведен анализ влияния компонентов, составляющих их основу, на конечное формирование микроструктуры сплавов. Исследования проводились на керамико-металлических образцах (керметах) при дефиците связующей фазы из никеля с молибденом. Для анализа микроструктуры керметов были использованы изображения поверхности их шлифов, полученных с помощью растровой электронной микроскопии в режиме отраженных электронов. Показано, что особенностью микроструктуры сплавов серии КНТ является наличие у них структуры ядро/обод (Core/ Rim Structure – CRM). Анализ выявил, что с уменьшением в БВТС серии КНТ содержания связующей фазы из Ni–Mo заметно увеличился размер обода в спеченном сплаве вокруг ядра из Ti(C, N). Дополнительно рассмотрена роль пластификатора в процессе формирования микроструктуры ядро/обод БВТС серии КНТ при дефиците связующей фазы. По результатам исследования микроструктуры керметов сделаны выводы, которые позволяют предположить, что в отсутствие зон, обогащенных азотом, возрастает вероятность диффузии молибдена через межфазные границы тугоплавких фаз. Следствием этого является увеличение параметра удельной объемной доли оболочки в микроструктуре кермета.</p></abstract><trans-abstract xml:lang="en"><p>We investigated the influence of the basic component concentration on the microstructure of the KNT3 and KNT3 tungsten-free hard alloys (TFHA), focusing on ceramic-metal samples (cermets) with a low nickel-molybdenum binder content. The microstructure of the sintered cermets was analyzed using reflected electron images of thin sections obtained with a scanning electron microscope. Our analusis revealed that the KNT alloy exhobits a core/rim structure (CRM). We observed that decreasing the Ni–Mo binder content leads to a significantincrease in the rim size isurrounding the Ti(C, N) core in the sintered alloy. We also investigated the effect of the plasticizer on the formation of the core/rim microstructure with a low binder content. Furthermore, we found that the absence of nitrogen-enriched areas in the Ti(C, N) grains increases the molybdenum diffusion rate across the refractory phase interfaces during the cooling stage, resulting in a higher specific volume fraction of the shell in the cermet microstructure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>анализ изображения шлифов</kwd><kwd>керметы</kwd><kwd>карбонитрид титана (Ti(CN))</kwd><kwd>никель-молибденовая связка</kwd><kwd>пластификатор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thin shell micrography</kwd><kwd>cermets</kwd><kwd>titanium carbonitride (Ti(CN))</kwd><kwd>nickel-molybdenum binder</kwd><kwd>plasticizer</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">Панов В.С., Чувилин А.М. Технология и свойства спеченных твердых сплавов и изделий из них. 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