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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-2015-3-11-17</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-135</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 порошков тантала восстановлением комплексных оксифторидных соединений натрием</article-title><trans-title-group xml:lang="en"><trans-title>Preparation of tantalum powders by reduction of complex oxyfluoride compounds by sodium</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>Колосов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolosov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, вед. науч. сотрудник ИХТРЭМС КНЦ РАН (184209, Мурманская обл., г. Апатиты, Академгородок, 26а), профессор кафедры химии и строительного материаловедения Апатитского филиала Мурманского государственного технического университета</p></bio><email xlink:type="simple">lab26@chemy.kolasc.net.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>Мирошниченко</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Miroshnichenko</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, науч. сотрудник ИХТРЭМС КНЦ РАН</p></bio><email xlink:type="simple">tantal@chemy.kolasc.net.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>Прохорова</surname><given-names>Т. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Prokhorova</surname><given-names>T. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, ст. науч. сотрудник ИХТРЭМС КНЦ РАН</p></bio><email xlink:type="simple">tantal@chemy.kolasc.net.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>Орлов</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlov</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, ст. науч. сотр., зав. лабораторией металлургии редких элементов КНЦ РАН, профессор кафедры обогащения Горного факультета Кольского филиала Петрозаводского государственного университета</p></bio><email xlink:type="simple">orlov@chemy.kolasc.net.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева&#13;
&#13;
Кольского научного центра РАН (ИХТРЭМС КНЦ РАН), г. Апатиты, Мурманская обл.</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>14</day><month>09</month><year>2015</year></pub-date><volume>0</volume><issue>3</issue><fpage>11</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2015</copyright-statement><copyright-year>2015</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/135">https://powder.misis.ru/jour/article/view/135</self-uri><abstract><p>На основе термодинамических и экспериментальных исследований реакций восстановления соединений тантала натрием из расплавов, содержащих комплексные оксифторидные соединения тантала, отобраны вещества (K2Ta2O3F6, K3TaOF6, K2TaOF5 и KTaOF4), наиболее пригодные для использования в качестве кислородсодержащих добавок при натриетермическом получении высокодисперсного танталового порошка. Применение указанных соединений позволяет получать порошки тантала с удельной поверхностью на уровне 3–5 м2/г, что в 8–10 раз выше, чем у порошков, приготовленных в тех же условиях при восстановлении K2TaF7. Показано, что полученные порошки тантала могут быть востребованы в качестве исходного материала для создания конденсаторного порошка с зарядом 70000–100000 мкКл/г.</p></abstract><trans-abstract xml:lang="en"><p>Substances (K2Ta2O3F6, K3TaOF6, K2TaOF3, and KTaOF4) most suitable for the use as oxygen-containing additives in the sodiumthermal fabrication of finely dispersed tantalum powder are selected from the melts containing complex oxyfluoride compounds of tantalum based on thermodynamic and experimental investigations of reduction reactions of tantalum compounds with sodium. The application of mentioned compounds gives the opportunity to fabricate the tantalum powders with the specific surface at a level of 3–5 m2/g, which is higher by a factor of 8–10 compared with powders prepared under the same conditions upon reducing K2TaF7. It is shown that the prepared tantalum powders can be demanded as the initial material to create the capacitor powder with the charge of 70000–100000 μC/g.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оксифторидное соединение</kwd><kwd>тантал</kwd><kwd>порошок</kwd><kwd>натриетермическое восстановление</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oxyfluoride compound</kwd><kwd>tantalum</kwd><kwd>powder</kwd><kwd>sodium-thermal reduction</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">Balaji Т., Govindaiah R., Sharma M.K. et al. 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