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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">Himičeskaâ fizika</journal-id><journal-title-group><journal-title xml:lang="en">Himičeskaâ fizika</journal-title><trans-title-group xml:lang="ru"><trans-title>Химическая физика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0207-401X</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">674962</article-id><article-id pub-id-type="doi">10.31857/S0207401X24040087</article-id><article-id pub-id-type="edn">VEKQMH</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Combustion, explosion and shock waves</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Горение, взрыв и ударные волны</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">The effect of cobalt content and mechanical activation on combustion in the Ni + Al + Co system</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние содержания кобальта и механической активации на горение в системе Ni + Al + Co</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kochetov</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Кочетов</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kolyan_kochetov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kovalev</surname><given-names>I. D.</given-names></name><name xml:lang="ru"><surname>Ковалев</surname><given-names>И. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kolyan_kochetov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2024</year></pub-date><volume>43</volume><issue>4</issue><fpage>66</fpage><lpage>73</lpage><history><date date-type="received" iso-8601-date="2025-02-28"><day>28</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0207-401X/article/view/674962">https://transsyst.ru/0207-401X/article/view/674962</self-uri><abstract xml:lang="en"><p>The effect of mechanical activation (MA) and cobalt content on the combustion velocity and maximum combustion temperature, elongation of samples during synthesis, the size of composite particles of the mixture after MA, phase composition and morphology of combustion products in the Ni + Al + Co system is investigated in this work. Activation of the Ni + Al + <italic>x</italic>Co mixture allowed the samples to burn at room temperature, with a cobalt content of up to 50 wt. %. An increase in the cobalt content in Ni + Al + <italic>x</italic>Co mixtures led to a decrease in the size of composite particles after MA, elongation of product samples and the maximum synthesis temperature. After MA, the elongation of the product samples and combustion velocity increased many times, the maximum synthesis temperature increased. With an increase in the cobalt content in the Ni + Al + Co mixture, combustion velocity first increases (at 10% Co), then decreases. Solid solutions based on NiAl and Ni<sub>3</sub>Al intermetallides were synthesized by the SHS method.</p></abstract><trans-abstract xml:lang="ru"><p>В работе исследовано влияние механической активации (МА) и содержания кобальта на скорость и максимальную температуру горения, удлинение образцов в процессе синтеза, размер композитных частиц смеси после МА, фазовый состав и морфологию продуктов горения в системе Ni + Al + Co. Активация смеси Ni + Al + <italic>x</italic>Co позволила реализовать горение образцов при комнатной температуре и содержании кобальта до 50 мас. %. Увеличение содержания кобальта в смесях Ni + Al + <italic>х</italic>Co приводило к уменьшению размера композитных частиц после МА, удлинения образцов продуктов и максимальной температуры синтеза. После МА многократно возросли удлинение образцов продуктов и скорость горения, увеличилась максимальная температура синтеза. С увеличением содержания кобальта в смеси Ni + Al + Co скорость горения сначала возрастает (при содержании Со 10%), а затем убывает. Методом самораспространяющегося высокотемпературного синтеза синтезированы твердые растворы на основе интерметаллидов NiAl и Ni<sub>3</sub>Al.</p></trans-abstract><kwd-group xml:lang="en"><kwd>combustion</kwd><kwd>mechanical activation</kwd><kwd>intermetallides</kwd><kwd>nickel aluminide</kwd><kwd>Ni + Al + Co</kwd><kwd>SHS</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>горение</kwd><kwd>механическая активация</kwd><kwd>интерметаллиды</kwd><kwd>алюминид никеля</kwd><kwd>система Ni + Al + Co</kwd><kwd>самораспространяющийся высокотемпературный синтез</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">S. C. Kelly, N.N. Thadhani, J. Appl. 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