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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-2022-3-4-23</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-712</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>Кинетика и механизм окисления никелевых сплавов</article-title><trans-title-group xml:lang="en"><trans-title>Oxidation kinetics and mechanism of nickel alloys</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>Агеев</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Aheiev</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>мл. науч. сотрудник </p><p>119049, г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Junior research scientist</p><p>119049, Russia, Moscow, Leninskiy pr., 4</p></bio><email xlink:type="simple">aheievmi@gmail.com</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>Санин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sanin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, мл. науч. сотрудник</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Junior research scientist</p><p>Moscow</p></bio><email xlink:type="simple">sanin@misis.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>Швындина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shvindina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>инженер научного проекта 1-й категории</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Scientific project engineer 1st category</p><p>Moscow</p></bio><email xlink:type="simple">natali19-03@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>Капланский</surname><given-names>Ю. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaplanskii</surname><given-names>Yu. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, науч. сотрудник</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Research scientist</p><p>Moscow</p></bio><email xlink:type="simple">ykaplanscky@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>Левашов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Levashov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, акад. РАЕН, проф., директор НУЦ СВС, МИСиС–ИСМАН; зав. кафедрой порошковой металлургии и функциональных покрытий</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Prof., Acad. of Russian Academy of Natural Science, Head of Scientific-Educational Center of SHS, MISIS–ISMAN; Head of the Department of powder metallurgy and functional coat</p><p>Moscow</p></bio><email xlink:type="simple">levashov@shs.misis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет (НИТУ) «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology (NUST) «MISIS»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>09</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>4</fpage><lpage>23</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/712">https://powder.misis.ru/jour/article/view/712</self-uri><abstract><p>Исследовано влияние легирующих элементов на кинетику и механизм окисления при температуре 1150 °С в течение 30 ч жаропрочных никелевых сплавов, полученных по технологиям центробежной СВС-металлургии (СВС-М), вакуумного индукционного переплава (ВИП), элементного синтеза (ЭС) и горячего изостатического прессования (ГИП). Проведен сравнительный анализ сплавов на основе моноалюминида никеля и стандартных сплавов марок АЖК и ЭП741НП. Выявлено, что кинетические зависимости описываются преимущественно параболической аппроксимацией. Логарифмический закон окисления с быстрым (в течение 3–4 ч) формированием первичного защитного слоя характерен для сплавов, легированных молибденом и гафнием. В случае АЖК и ЭП741НП на начальной стадии (2–3 ч) окисление происходит по параболическому закону, а в дальнейшем – по линейному механизму с объемным окислением и полным разрушением образцов. Диффузия кислорода и азота протекает преимущественно по границам зерен алюминида никеля и лимитируется образованием защитной пленки состава Al2O3 + Cr2O3 + XnOm. Для сплавов, полученных методом СВС-М, характерным является положительное влияние на жаростойкость легирующих добавок циркония и тантала. В межзеренном пространстве образуется фаза Ta2O5, которая снижает скорость и глубину окисления. Цирконийсодержащий верхний слой Al2O3 + Zr5Al3O0,5 блокирует внешнюю диффузию кислорода и азота, тем самым повышая жаростойкость. Легирование гафнием также положительно сказывается на окислительной стойкости сплавов и приводит к образованию субмикронных и наноразмерных включений HfO2, которые подавляют зернограничную диффузию кислорода. В образцах с повышенным содержанием молибдена формируются летучие оксиды MoO3, Mo3O4, CoMoO4, которые разрушают целостность защитного слоя. Сравнительный анализ кинетики и механизма окисления образцов из базового β-сплава с добавками Cr + Co + Hf показал существенное влияние на жаростойкость способа получения образцов. При снижении доли примесного азота и образования подслоя Cr2O3 меняется и механизм окисления.</p></abstract><trans-abstract xml:lang="en"><p>The study covers the effect of alloying elements on the kinetics and mechanism of oxidation at 1150 °С for 30 hours of heat-resistant nickel alloys obtained using such technologies as centrifugal SHS metallurgy (SHS(M)), vacuum induction melting (VIM), elemental synthesis (ES), hot isostatic pressing (HIP). A comparative analysis was carried out for alloys based on nickel monoaluminide and standard AZhK and EP741NP alloys. It was found that kinetic dependences are described mainly by parabolic approximation. The logarithmic law of oxidation with the rapid (within 3–4 hours) formation of the primary protective layer is typical for alloys doped with molybdenum and hafnium. In the case of AZhK and EP741NP, oxidation proceeds according to a parabolic law at the initial stage (2–3 hours), and then according to a linear mechanism with the voloxidation and complete destruction of samples. Oxygen and nitrogen diffusion proceeds predominantly along the nickel aluminide grain boundaries and it is limited by the Al2O3 + Cr2O3 + XnOm protective film formation. SHS(M) alloys feature by a positive effect of zirconium and tantalum added as dopants on heat resistance. The Ta2O5 phase is formed in the intergranular space, which reduces the rate and depth of oxidation. The zirconium-containing top layer Al2O3 + Zr5Al3O0.5 blocks the external diffusion of oxygen and nitrogen, thereby improving heat resistance. Doping with hafnium also has a positive effect on oxidation resistance and leads to the formation of submicron and nanosized HfO2 inclusions that suppress the grain boundary diffusion of oxygen. MoO3, Mo3O4, CoMoO4 volatile oxides are formed in alloys with a high content of molybdenum and compromise the protective layer integrity. A comparative analysis of the oxidation kinetics and mechanism for samples consisting of the base β-alloy with Cr + Co + Hf additives showed a significant effect on the heat resistance of the sample preparation method. As the proportion of impurity nitrogen decreases and the Cr2O3 sublayer is formed, the oxidation mechanism also changes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>никелевые сплавы</kwd><kwd>жаростойкость</kwd><kwd>окисленный слой</kwd><kwd>центробежная СВС-металлургия</kwd><kwd>элементный синтез</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nickel alloys</kwd><kwd>heat resistance</kwd><kwd>oxidized layer</kwd><kwd>centrifugal SHS metallurgy</kwd><kwd>elemental synthesis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской Федерации (проект государственного задания № 0718-2020-0034).</funding-statement><funding-statement xml:lang="en">The research was funded by the Ministry of Science and Higher Education of the Russian Federation (Government Task Project No. 0718-2020-0034).</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">Логунов А.В. 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