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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-2018-3-4-10</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-379</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>Объемное восстановление расплава FeCl2–CaCl2 кальцием, растворенным в хлориде кальция</article-title><trans-title-group xml:lang="en"><trans-title>FeCl2–CaCl2 melt volumetric reduction by calcium dissolved in calcium chloride</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>Поляков</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант кафедры металлургии цветных металлов (МЦМ) УрФУ.</p><p>620000, Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Postgraduate student, Department of metallurgy of non-ferrous metals UrFU.</p><p>620002, Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">aheon@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>Бабин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Babin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент кафедры МЦМ УрФУ.</p><p>620000, Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Cand. Sci. (Tech.), Assistant prof., Department of metallurgy of non-ferrous metals UrFU.</p><p>620002, Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">babinav@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>Лебедев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор химических наук, профессор кафедры МЦМ УрФУ.</p><p>620000, Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chem.), Prof., Department of metallurgy of non-ferrous metals UrFU.</p><p>620002, Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">v.a.lebedev@urfu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет (УрФУ) имени первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University n.a. the First President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>16</day><month>09</month><year>2018</year></pub-date><volume>0</volume><issue>3</issue><fpage>4</fpage><lpage>10</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2018</copyright-statement><copyright-year>2018</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/379">https://powder.misis.ru/jour/article/view/379</self-uri><abstract><p>Цель данного исследования – получение высокодисперсного порошка, пригодного для сфероидизации, с последующим использованием его в аддитивных технологиях. Объемным восстановлением расплава FeCl2–CaCl2 кальцием, растворенным в CaCl2, получен мелкодисперсный порошок железа. Процесс состоял из трех стадий: приготовление расплавов, содержащих FeCl2 и Са, их смешение и высокотемпературная выдержка при 800 °С в течение 1 ч. По окончании процесса застывший плав разделяли на верхнюю и придонную части. Продукт из верхней части имел удельную поверхность 7,60 м2/г, а из нижней – 5,38 м2/Средний размер частиц в первом случае составлял 157 мкм, а в последнем – 124 мкм. После ультразвукового диспергирования он уменьшился до 26 и 71 мкм соответственно. Количественный рентгенофазовый анализ показал, что основная фаза порошка – металлическое железо (более 97 мас.%). Таким образом, оригинальность исследования состоит в применении объемного, интенсивного восстановления железа из хлоридных расплавов кальцием, растворенным в его хлориде. Уникальность работы заключается в полученном продукте – основная часть восстановленного железа находится в объеме расплава в виде линейных сростков длиной 40–600 мкм, диаметром 10–50 мкм, легко разрушающихся при ультразвуковом диспергирования на отдельные кристаллы, средний размер которых составляет 26 мкм. Результаты исследования показали возможность реализации процесса кальцийтермического получения мелкодисперсного железного порошка.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of this study is to obtain highly dispersed powder suitable for spheroidization for further application in additive technologies. Volumetric reduction of the FeCl2–CaCl2 melt by calcium dissolved in CaCl2 produced fine iron powder. The process consisted of three stages: preparation of melts containing FeCl2 and Ca, their mixing and high-temperature aging at 800 °C for 1 hour. At the end of the process the frozen melt was divided into upper and bottom parts. The product from the upper part had a specific surface area of 7,60 m2/g, and for the lower part it was 5,38 m2/g, Average particle size was 157 μm for the former and 124 μm for the latter. After ultrasonic dispersion, it was reduced to 26 μm and 71 μm, respectively. Quantitative X-ray phase analysis showed that the main phase of powder is metallic iron (more than 97 wt.%). Therefore, research originality is the use of volumetric, intensive reduction of iron from chloride melts by calcium dissolved in its chloride. The uniqueness of the study consists in the product obtained, i.e. the main part of reduced iron is in the melt volume as linear aggregates 40 to 600 μm in length, 10 to 50 μm in diameter that are easily broken by ultrasonic dispersion into individual crystals with an average size of 26 μm. The results of the study demonstrated the feasibility of calcium-thermal production of fine iron powder.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>расплав Ca–CaCl2</kwd><kwd>расплав FeCl2–CaCl2</kwd><kwd>смешение расплавов</kwd><kwd>кальцийтермическое восстановление</kwd><kwd>микрофотографии</kwd><kwd>рентгенофазовый анализ</kwd><kwd>гранулометрия</kwd><kwd>ультразвуковое измельчение</kwd><kwd>аддитивные технологии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Ca–CaCl2 melt</kwd><kwd>FeCl2–CaCl2 melt</kwd><kwd>melt mixing</kwd><kwd>calcium-thermal reduction</kwd><kwd>microphotographs</kwd><kwd>X-ray phase analysis</kwd><kwd>granulometry</kwd><kwd>ultrasonic grinding</kwd><kwd>additive technologies</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Лыков П.А. 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