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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-2020-4-14-21</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-572</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>Процессы получения и свойства порошков</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Production Processes and Properties of Powders</subject></subj-group></article-categories><title-group><article-title>Получение псевдосплавов CuCr осаждением меди из раствора на порошки хрома при одновременной механической активации смеси</article-title><trans-title-group xml:lang="en"><trans-title>Preparation of CuCr pseudo-alloys by deposition of copper from a solution onto chromium powders with simultaneous mechanical activation of the mixture</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>Вадченко</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vadchenko</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат физико-математических наук, старший научный сотрудник лаборатории динамики микрогетерогенных процессов</p><p>142432, Московская обл., Ногинский р-н, г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Cand. Sci. (Phys.-Math.), leading researcher of Laboratory of dynamics of microheterogeneous processes</p><p>142432, Moscow region, Noginsk district, Chernogolovka, Academician Osip’yan str., 8</p></bio><email xlink:type="simple">vadchenko@ism.ac.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>Суворова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Suvorova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Инженер лаборатории динамики микрогетерогенных процессов</p><p>142432, Московская обл., Ногинский р-н, г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Engineer, Laboratory of dynamics of microheterogeneous processes</p><p>142432, Moscow region, Noginsk district, Chernogolovka, Academician Osip’yan str., 8</p></bio><email xlink:type="simple">elsu1@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>Мухина</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhina</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Технолог лаборатории физического материаловедения</p><p>142432, Московская обл., Ногинский р-н, г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Technologist, Laboratory of materials science</p><p>142432, Moscow region, Noginsk district, Chernogolovka, Academician Osip’yan str., 8</p></bio><email xlink:type="simple">muxinanina2012@yandex.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>Ковалев</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalev</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат физико-математических наук, науч. сотрудник лаборатории рентгеноструктурных исследований</p><p>142432, Московская обл., Ногинский р-н, г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Cand. Sci. (Phys.-Math.), researcher, Laboratory of X-ray investigation</p><p>142432, Moscow region, Noginsk district, Chernogolovka, Academician Osip’yan str., 8</p></bio><email xlink:type="simple">i2212@yandex.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>Илларионова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Illarionova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Инженер-исследователь лаборатории динамики микрогетерогенных процессов</p><p>142432, Московская обл., Ногинский р-н, г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Research engineer, Laboratory of dynamics of microheterogeneous processes</p><p>142432, Moscow region, Noginsk district, Chernogolovka, Academician Osip’yan str., 8</p></bio><email xlink:type="simple">alchg@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова РАН (ИСМАН)<country>Россия</country></aff><aff xml:lang="en">Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences (ISMAN)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>14</day><month>12</month><year>2020</year></pub-date><volume>0</volume><issue>4</issue><fpage>14</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2020</copyright-statement><copyright-year>2020</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/572">https://powder.misis.ru/jour/article/view/572</self-uri><abstract><p>Для получения композитных частиц СuCr использован метод осаждения меди из раствора ее сульфата на частицы порошка хрома при одновременной механической активации (МА) смеси в планетарной шаровой мельнице АГО-2 в течение 5 мин. Концентрация CuSO4·5H2O в растворе при полном восстановлении меди обеспечивала молярное соотношение Cu/Cr = 1. Осажденная мелкокристаллическая медь обладает высокой активностью и на воздухе быстро окисляется до оксида Cu2O, поэтому отмывку, сушку и хранение полученных композитных порошков проводили в атмосфере аргона. После сушки дополнительно выполняли МА смеси в течение 5 мин. При МА в растворе начинают формироваться композитные частицы с ламинатной структурой. Из полученных порошков прессовали таблетки диаметром 3 мм, высотой до 1,5 мм и плотностью 4,2–4,5 г/см3. Образцы спекали в атмосфере аргона при температуре 700–1400 °С. Для сравнения микроструктур также спекали образцы из смесей порошков металлов Cr и Cu с объемным соотношением хрома и меди 50 : 50, полученных простым смешением в фарфоровой ступке в течение 20 мин и МА длительностью 10 мин. В зависимости от температуры нагрева можно выделить три области формирования структуры сплава. При температурах нагрева ниже температуры плавления эвтектики композитные частицы спекаются в отдельных точках. При температурах нагрева выше температуры ликвидуса осуществляются плавление и фазоразделение сплава; одна часть образца состоит из меди, обогащенной хромом, другая – из хрома, обогащенного медью. При промежуточных температурах нагрева происходит жидкофазное спекание, сопровождающееся фазоразделением. Частицы хрома, обогащенные медью, приобретают сферическую форму и находятся в медной матрице, обогащенной хромом. Сравнение спеченных в одинаковых условиях образцов из смесей порошков, полученных разными способами, показало, что более равномерную и мелкозернистую структуру имеют образцы с осажденной медью.</p></abstract><trans-abstract xml:lang="en"><p>CuCr composite particles were obtained using the method of copper deposition from the solution of its sulfate onto chromium powder particles with the simultaneous mechanical activation (MA) of the mixture in an AGO-2 planetary ball mill for 5 minutes. CuSO4·5H2O concentration in the solution with complete copper reduction provided a molar ratio of Cu/Cr = 1. Since deposited fine crystalline copper is highly active and rapidly oxidizes to Cu2O oxide in air, the obtained composite powders were washed, dried, and stored in an argon atmosphere. After drying, the mixture was subjected to additional MA for 5 minutes. Composite particles with a laminate structure begin to form in the solution during MA. Tablets were pressed with a diameter of 3 mm, height of up to 1.5 mm, and density of 4.2–4.5 g/cm3 from the powders obtained. Samples were sintered in an argon atmosphere at 700– 1400 °С. For comparison of microstructures, samples were also sintered from mixtures of Cr and Cu metal powders with a volume ratio of chromium to copper of 50 : 50 obtained by simple mixing in a porcelain mortar for 20 minutes and MA for 10 minutes. Three areas of the alloy structure formation can be distinguished depending on the heating temperature. At heating temperatures below the eutectic melting point, composite particles are sintered at certain points. At heating temperatures above the liquidus temperature, the alloy melts with its phases separated; one part of the sample consists of copper enriched in chromium, and the other part consists of chromium enriched in copper. At intermediate heating temperatures, liquid phase sintering occurs accompanied by phase separation. Copper-enriched chromium particles become spherical and are located in a chromium-enriched copper matrix. Comparison of samples sintered under the same conditions from powder mixtures obtained by different methods showed that a more uniform and fine-grained structure is obtained in samples with deposited</p></trans-abstract><kwd-group xml:lang="ru"><kwd>псевдосплавы</kwd><kwd>осаждение меди</kwd><kwd>механическая активация</kwd><kwd>спекание</kwd><kwd>фазоразделение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pseudo-alloys</kwd><kwd>copper deposition</kwd><kwd>mechanical activation</kwd><kwd>sintering</kwd><kwd>phase separation</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта № 18-03-00438</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The study was carried out under financial support of the Russian Foundation for Basic Research as part of Project № 18-03-00438</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">Kojima H., Nishimura R., Okudo H., Sato H., Saito H., Noda Y. 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