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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2019-2-115-122</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1583</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>ФИЗИКО-ХИМИЧЕСКИЕ ОСНОВЫ МЕТАЛЛУРГИЧЕСКИХ ПРОЦЕССОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICO-CHEMICAL BASICS OF METALLURGICAL PROCESSES</subject></subj-group></article-categories><title-group><article-title>ИСПОЛЬЗОВАНИЕ УГЛЕРОДНОГО МАТЕРИАЛА С РАЗВИТОЙ ПОВЕРХНОСТЬЮ ДЛЯ СИНТЕЗА ВЫСШЕГО КАРБИДА ХРОМА</article-title><trans-title-group xml:lang="en"><trans-title>USE OF CARBON MATERIAL WITH DEVELOPED SURFACE FOR SYNTHESIS OF HIGHER CHROMIUM CARBIDE</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>Крутский</surname><given-names>Ю. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Krutskii</surname><given-names>Yu. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры химии и химической технологии</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair “Chemistry and Chemical Technology”</p></bio><email xlink:type="simple">j_krutskii@rambler.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>Дюкова</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyukova</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>инженер аналитической лаборатории</p></bio><bio xml:lang="en"><p>Engineer of analytical Laboratory</p></bio><email xlink:type="simple">dyukova_kx701@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузьмин</surname><given-names>Р. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuz′min</surname><given-names>R. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры материаловедения в машиностроении</p></bio><bio xml:lang="en"><p>Postgraduate of the Chair “Materials Science in Mechanical Engineering”</p></bio><email xlink:type="simple">kuzmin.2010@corp.nstu.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>Максимовский</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maksimovskii</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., старший научный сотрудник лаборатории эпитаксиальных слоев</p></bio><bio xml:lang="en"><p>Cand. Sci (Eng.), Senior Researcher of the Laboratory of Epitaxial Layers</p></bio><email xlink:type="simple">eugene@niic.nsc.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Веселов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Veselov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры материаловедения в машиностроении</p></bio><bio xml:lang="en"><p>Cand. Sci (Eng.), Assist. Professor of the Chair “Materials Science in Mechanical Engineerig”</p></bio><email xlink:type="simple">veselov@corp.nstu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Новосибирский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State Technical University, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Международный научный центр по теплофизике и энергетике»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC “International Research Center for Thermal Physics and Energy”, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт неорганической химии им. А.В. Николаева СО РАН;&#13;
Новосибирский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk;&#13;
Novosibirsk State University, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2019</year></pub-date><volume>62</volume><issue>2</issue><fpage>115</fpage><lpage>122</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Крутский Ю.Л., Дюкова К.Д., Кузьмин Р.И., Максимовский Е.А., Веселов С.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Крутский Ю.Л., Дюкова К.Д., Кузьмин Р.И., Максимовский Е.А., Веселов С.В.</copyright-holder><copyright-holder xml:lang="en">Krutskii Y.L., Dyukova K.D., Kuz′min R.I., Maksimovskii E.A., Veselov S.V.</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://fermet.misis.ru/jour/article/view/1583">https://fermet.misis.ru/jour/article/view/1583</self-uri><abstract><p>Представлены результаты исследования процесса синтеза высокодисперсного порошка карбида хрома состава Cr3C2 . Карбид хрома был получен восстановлением оксида хрома Cr2O3 нановолокнистым углеродом (НВУ) в индукционной печи в среде аргона. НВУ – продукт каталитического разложения легких углеводородов. Основной характеристикой НВУ является высокое значение удельной поверхности (~150  000  м2/кг), что существенно выше, чем у сажи (~50  000  м2/кг). Содержание примесей в НВУ находится на уровне 1  % (по массе). На основе анализа диаграммы состояния системы Cr – C определены состав шихты и верхний температурный предел реакции карбидообразования для получения карбида хрома Cr3C2 в порошкообразном состоянии. На основе термодинамического анализа определена температура начала реакции карботермического восстановления оксида хрома Cr2 O3 при различных давлениях СО. Изучены характеристики карбида хрома с использованием рентгенофазового анализа, пикнометрического анализа, сканирующей электронной микроскопии с применением локального энергодисперсионного рентгеновского микроанализа (EDX), низкотемпературной адсорбции азота с последующим определением удельной поверхности по методу БЭТ, седиментационного анализа, синхронной термогравиметрии и дифференциальной сканирующей калориметрии (TГ/ДСК). Полученный при оптимальных параметрах материал представлен одной фазой – карбидом хрома Cr3C2 . Частицы порошка преимущественно агрегированы. Средний размер частиц и агрегатов составляет 6,5 мкм с широким диапазоном распределения по размерам. Удельная поверхность однофазного образца составляет 2400  м2 /кг. Окисление карбида хрома начинается при температуре примерно 640  °С и практически заканчивается при 1000  °С. Оптимальными параметрами синтеза являются соотношение реагентов по стехиометрии на получение карбида состава Cr3C2 при температуре 1300  °С и времени выдержки 20 мин. Показано, что для такого процесса нановолокнистый углерод является эффективным восстановителем и карбидизатором и что оксид хрома Cr2O3 практически полностью восстанавливается до карбида Cr3C2 .</p></abstract><trans-abstract xml:lang="en"><p>The paper presents experimental data on synthesis of finely dispersed powder of chromium carbide Cr3C2 . Chromium carbide was prepared by reduction of chromium oxide Cr2O3 with nanofibrous carbon (NFC) in induction furnace in argon atmosphere. NFC is a product of catalytic decomposition of light hydrocarbons. The main characteristic of NFC is high specific surface area (~150,000  m2 /kg), which is significantly higher than that of carbon black (~50,000  m2 /kg). Content of impurities in NFC is at the level of 1  wt  %. Based on analysis of state diagram of Cr – C system, composition of charge and the upper temperature limit of carbide formation reaction for obtaining chromium carbide in powder state are determined. Based on thermodynamic analysis, temperature of the onset of carbothermic reduction reaction of chromium oxide Cr2O3 was determined at various CO pressures. Characteristics of chromium carbide were studied using X-ray diffraction analysis, pycnometric analysis, scanning electron microscopy using local energy dispersive X-ray microanalysis (EDX), lowtemperature nitrogen adsorption followed by determination of specific surface area by means of BET method, sedimentation analysis, synchronous thermogravimetry and differential scanning calorimetry (TG/DSC). The material obtained at optimal parameters is represented by a single phase – chromium carbide Cr3C2 . Powder particles were predominantly aggregated. Average size of particles and aggregates equaled 6.5  μm within a wide range of size distribution. Specific surface value of the obtained samples was 2200  m2 /kg. Oxidation of chromium carbide began at temperature of ~640  °C and practically ends at ~1000  °C. Optimum parameters of synthesis are provided by ratio of reagents according to carbide of Cr3C2 composition stoichiometry at temperature of 1300  °С and holding time of 20 minutes. It is shown that for this process nanofibrous carbon is an effective reducing agent and that chromium oxide Cr2O3 is almost completely reduced to carbide Cr3C2 .</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокодисперсный порошок</kwd><kwd>синтез</kwd><kwd>карбид хрома</kwd><kwd>нановолокнистый углерод</kwd><kwd>карботермическое восстановление</kwd><kwd>индукционный нагрев</kwd><kwd>распределение размеров частиц</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finely dispersed powder</kwd><kwd>synthesis</kwd><kwd>chromium carbide</kwd><kwd>nanofibrous carbon</kwd><kwd>carbothermic reduction</kwd><kwd>induction heating</kwd><kwd>particle size distribution</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке проекта в рамках государственного задания Министерства образования и науки Российской Федерации, проект № 10.1151.2014 / К.</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">Свойства, получение и применение тугоплавких соединений: Справочник / Под ред. 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