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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Engineering Research</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Engineering Research</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Инженерные исследования</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-8143</issn><issn publication-format="electronic">2312-8151</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">18913</article-id><article-id pub-id-type="doi">10.22363/2312-8143-2018-19-2-165-176</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Mechanical engineering and power-plant</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Машиностроение и материаловедение</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">INFLUENCE OF ENERGY ON PHASE COMPOSITION OF END-PRODUCT OBTAINED BY VACUUM-FREE ELECTRIC ARC SYNTHESIS OF CUBIC SILICON CARBIDE</article-title><trans-title-group xml:lang="ru"><trans-title>ВЛИЯНИЕ ЭНЕРГИИ НА ФАЗОВЫЙ СОСТАВ ПРОДУКТА БЕЗВАКУУМНОГО ЭЛЕКТРОДУГОВОГО СИНТЕЗА КУБИЧЕСКОГО КАРБИДА КРЕМНИЯ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pak</surname><given-names>Aleksandr Y</given-names></name><name xml:lang="ru"><surname>Пак</surname><given-names>Александр Яковлевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Associate Professor of the automation and robotics department of the information technology and robotics engineering school, Tomsk Polytechnic University. Research interests: powder materials, carbides, carbon materials, electricdischarge methods of synthesis, phase transformations</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент отделения автоматизации и робототехники инженерной школы информационных технологий и робототехники, Томский политехнический университет. Область научных интересов: порошковые материалы, карбиды, углеродные материалы, электроразрядные методы синтеза, фазовые превращения</p></bio><email>ayapak@tpu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mamontov</surname><given-names>Gennadii Ya</given-names></name><name xml:lang="ru"><surname>Мамонтов</surname><given-names>Геннадий Яковлевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Physics and Mathematics, Professor of automation and robotics department of the information technology and engineering school, Tomsk Polytechnic University. Research interests: thermodynamics, mathematical statistics, high-temperature processes, fast processes</p></bio><bio xml:lang="ru"><p>доктор физико-математических наук, профессор отделения автоматизации и робототехники инженерной школы информационных технологий и робототехники, Томский политехнический университет. Область научных интересов: термодинамика, математическая статистика, высокотемпературные процессы, быстропротекающие процессы</p></bio><email>gmamontov@tpu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bolotnikova</surname><given-names>Ol’ga A</given-names></name><name xml:lang="ru"><surname>Болотникова</surname><given-names>Ольга Александровна</given-names></name></name-alternatives><bio xml:lang="en"><p>student of electric power and electrical engineering department, Tomsk Polytechnic University. Research interests: silicon carbide, electric discharge methods of synthesis.</p></bio><bio xml:lang="ru"><p>студентка отделения электроэнергетики и электротехники, Томский политехнический университет. Область научных интересов: карбид кремния, электроразрядные методы синтеза</p></bio><email>bolotnikovaoa@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tomsk Polytechnic University</institution></aff><aff><institution xml:lang="ru">Томский политехнический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>19</volume><issue>2</issue><issue-title xml:lang="en">VOL 19, NO2 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 19, №2 (2018)</issue-title><fpage>165</fpage><lpage>176</lpage><history><date date-type="received" iso-8601-date="2018-07-19"><day>19</day><month>07</month><year>2018</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Pak A.Y., Mamontov G.Y., Bolotnikova O.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Пак А.Я., Мамонтов Г.Я., Болотникова О.А.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Pak A.Y., Mamontov G.Y., Bolotnikova O.A.</copyright-holder><copyright-holder xml:lang="ru">Пак А.Я., Мамонтов Г.Я., Болотникова О.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/engineering-researches/article/view/18913">https://journals.rudn.ru/engineering-researches/article/view/18913</self-uri><abstract xml:lang="en"><p>The paper describes the scientific and technical basis of the vacuum-free plasma method for obtaining silicon carbide realized by DC arc discharge between graphite electrodes. In a series of experiments the energy supplied to the system was changed by increasing the duration of arc discharge with the constant value of current intensity (165 A); two precursor types were used: a mixture of silicon powder with X-ray amorphous carbon in the microfiber form in the first case and with carbon powder in the second case; the mass ratio in the initial mixture was Si:C = 2:1. As a result of the evaluation of the synthesis product quantitative composition, the experimental parameters that allow to achieve the maximum content of the target silicon carbide phase (up to 45%) are determined. Moreover, it was possible to determine the parameters when the only impurity phase in the product was graphite; as a result, the purification of the product from unbound carbon and thereby obtaining silicon carbide with ~99% content was successfully performed by atmospheric furnace heating at a temperature of 900 °C. This result is ensured by two factors: the presence of carbon fibers in the initial reagents mixture and a sufficient level of the supplied energy of about 216 kJ/g.</p></abstract><trans-abstract xml:lang="ru"><p>Изложены научно-технические основы безвакуумного плазменного метода получения карбида кремния, реализуемого при помощи дугового разряда постоянного тока между графитовыми электродами. В ходе серии экспериментов изменялась подведенная к системе энергия путем увеличения длительности горения дугового разряда при неизменном значении силы тока (165 А). В работе использовались два типа прекурсоров: 1) смесь порошкового кремния с рентгеноаморфным углеродом в виде микроразмерных волокон; 2) с порошковым углеродом; соотношение масс в исходной смеси составляло Si:C = 2:1. В результате оценки количественного состава продукта синтеза определены параметры эксперимента, которые позволяют добиться максимального содержания искомой фазы карбида кремния (до 45%). Определены параметры, при которых единственной примесной фазой в продукте является графит; в результате удалось отжигом в атмосферной печи при температуре 900 °С обеспечить очистку продукта от несвязанного углерода и тем самым получить карбид кремния с содержанием около 99%. Этот результат обеспечивают два фактора: наличие в составе смеси исходных реагентов углеродных волокон и достаточный уровень подведенной энергии порядка 216 кДж/г.</p></trans-abstract><kwd-group xml:lang="en"><kwd>silicon carbide</kwd><kwd>vacuum-free method</kwd><kwd>electric arc synthesis</kwd><kwd>precursor influence</kwd><kwd>X-ray diffractometry</kwd><kwd>electron microscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>карбид кремния</kwd><kwd>безвакуумный метод</kwd><kwd>электродуговой синтез</kwd><kwd>влияние прекурсоров</kwd><kwd>рентгеновская дифрактометрия</kwd><kwd>электронная микроскопия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Andrievskii R.A. Nanorazmernyi karbid kremniya: sintez, struktura i svoistva [Nanosize silicon carbide: synthesis, structure and properties]. Uspekhi Khimii [Russian Chemical Reviews]. 2009. No. 78. P. 889—900. 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