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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-2023-4-5-15</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-845</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>Исследование физических, химических и технологических свойств порошка титана, полученного термическим дегидрированием в вакууме</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of physical, chemical, and technological properties of titanium powder obtained by thermal dehydrogenation in vacuum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4942-5520</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черезов</surname><given-names>Н. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherezov</surname><given-names>N. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никита Петрович Черезов – мл. науч. сотрудник лаборатории высокоэнергетических методов синтеза сверхвысокотем­пературных керамических материалов</p><p>Россия, 142432, Московская обл., г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Nikita P. Cherezov – Junior Researcher of the Laboratory of high-energy methods of synthesis of ultrahigh-temperature ceramic materials</p><p>8 Akademican Osip'yan Str., Chernogolovka, Moscow Region 142432, Russia</p></bio><email xlink:type="simple">cherezovnikita@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6147-5753</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алымов</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Alymov</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Иванович Алымов – д.т.н., чл.-корр. РАН, директор</p><p>Россия, 142432, Московская обл., г. Черноголовка, ул. Академика Осипьяна, 8</p></bio><bio xml:lang="en"><p>Mikhail I. Alymov – Dr. Sci. (Eng.), Corresponding Member of the Russian Academy of Sciences, Director</p><p>8 Akademican Osip'yan Str., Chernogolovka, Moscow Region 142432, Russia</p></bio><email xlink:type="simple">alymov.mi@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Merzhanov Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2023</year></pub-date><volume>17</volume><issue>4</issue><fpage>5</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2023</copyright-statement><copyright-year>2023</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/845">https://powder.misis.ru/jour/article/view/845</self-uri><abstract><p>В последнее время наблюдается большой интерес к порошковой металлургии – в частности, благодаря активному развитию аддитивного производства, в связи с чем актуальной задачей является разработка методов получения исходных порошков металлов, которые обладали бы низкой стоимостью, но соответствовали высоким требованиям потребителя. Настоящая работа является продолжением исследований титановых порошков, получаемых методом СВС-гидрирования и термического дегидрирования. Полученные ранее порошки гидрида титана по технологии СВС были просеяны на фракции, соответствующие гранулометрическому составу порошка титана марок ПТК, ПТС, ПТМ и ПТОМ. Далее порошковые образцы гидрида титана были дегидрированы с помощью вакуумного отжига в электрической печи сопротивления. В процессе дегидрирования была исследована кинетика выделения водорода из порошка титана в зависимости от размера частиц. Изучены макро- и микроструктура, химические, технологические свойства дегидрированных порошков. Установлено, что порошок титана после дегидрирования сохранил исходную полигональную осколочную форму. Средний размер частиц уменьшился на 5–20 %, на крупных частицах были обнаружены «сателлиты». Химическим анализом выявлено, что крупные образцы содержат большее количество остаточного водорода и газовых примесей (Σ 0,77 мас. %), чем тонкие порошки (около Σ 0,26 мас. %). Согласно исследованиям технологических свойств, получаемые порошки обладают необходимыми характеристиками для применения в порошковой металлургии титана (исключением является низкая текучесть порошков из-за формы частиц и микронеоднородности структуры). Таким образом, показана перспективность метода СВС-гидрирования и термического дегидрирования, который позволяет изготавливать качественные порошки титана.</p></abstract><trans-abstract xml:lang="en"><p>In recent times, there has been significant interest in powder metallurgy, driven primarily by the active development of additive manufacturing. Consequently, a pressing task is the development of methods for producing initial metal powders that are cost-effective while meeting high consumer standards. This research is a continuation of studies on titanium powders obtained through SHS hydrogenation and thermal dehydrogenation. The titanium hydride powders, previously obtained using SHS technology, were sieved, resulting in fractions that matched the granulometric composition of titanium powders of PTK, PTS, PTM, and PTOM grades. Subsequently, the titanium hydride powder samples underwent dehydrogenation through vacuum annealing in an electric resistance furnace. Throughout the dehydrogenation process, the kinetics of hydrogen release from the titanium powder were examined as a function of particle size. The macro- and microstructure, chemical composition, and technological properties of the dehydrogenated powders were thoroughly analyzed. It was determined that the titanium powder maintained its original polygonal fragmented shape after dehydrogenation. The average particle size decreased by 5–20 %, and “satellites” were observed on larger particles. Chemical analysis revealed that larger samples contained a higher level of residual hydrogen and gas impurities (Σ 0.77 wt. %) compared to finer powders (Σ 0.26 wt. %). Regarding the study of technological properties, the resulting powders exhibited the necessary characteristics for use in titanium powder metallurgy, with the exception of low flowability due to the particle shape and microstructural heterogeneity). In conclusion, this research has demonstrated the potential of the SHS hydrogenation and thermal dehydrogenation method in producing high-quality titanium powders.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>титан</kwd><kwd>порошковая металлургия</kwd><kwd>самораспространяющийся высокотемпературный синтез (СВС)</kwd><kwd>дегидрирование</kwd><kwd>морфология</kwd><kwd>химические свойства</kwd><kwd>технологические свойства</kwd></kwd-group><kwd-group xml:lang="en"><kwd>titanium</kwd><kwd>powder metallurgy</kwd><kwd>self-propagating high-temperature synthesis (SHS)</kwd><kwd>dehydrogenation</kwd><kwd>morphology</kwd><kwd>chemical properties</kwd><kwd>technological properties</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Института структурной макрокинетики и проблем материаловедения им. А.Г. Мержанова РАН.</funding-statement><funding-statement xml:lang="en">This work was carried out under the state assignment received by the Merzhanov Institute of Structural Macrokinetics and Materials Science.</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">Мальшин В.М., Завадовская В.Н., Пампушко Н.А. Металлургия титана. М.: Металлургия, 1991. 208 с.</mixed-citation><mixed-citation xml:lang="en">Mal’shin V.M., Zavadovskaya V.N., Pampushko N.A. Metallurgy of titanium. Moscow: Metallurgiya, 1991. 208 p. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Bolzoni L., Ruiz-Navas E.M., Gordo E. Powder metal­lurgy CP–Ti performances: Hydride–dehydride vs. sponge. 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