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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2019-85-11-19-25</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1100</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>АНАЛИЗ ВЕЩЕСТВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SUBSTANCES ANALYSIS</subject></subj-group></article-categories><title-group><article-title>Изменение микроструктуры и оптических свойств допированного натрий-кальциевого силикатного стекла в процессе вторичной термообработки</article-title><trans-title-group xml:lang="en"><trans-title>Changes in the microstructure and optical properties of doped sodium-calcium silicate glass upon secondary heat treatment</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>Андреев</surname><given-names>М Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreev</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Николаевич Андреев - химический факультет.</p><p>119899, Москва, Ленинские горы, д. 1, корп. 3</p></bio><bio xml:lang="en"><p>Maksim N. Andreev - Department of Chemistry.</p><p>1 bld. 3 Leninskiye Gory, Moscow, 119899</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дроздов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Drozdov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Анатольевич Дроздов - химический факультет.</p><p>119899, Москва, Ленинские горы, д. 1, корп. 3</p></bio><bio xml:lang="en"><p>Andrei A. Drozdov - Department of Chemistry.</p><p>1 bld. 3 Leninskiye Gory, Moscow, 119899</p></bio><email xlink:type="simple">camertus@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>Козлов</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Игоревич Козлов - химический факультет.</p><p>119899, Москва, Ленинские горы, д. 1, корп. 3</p></bio><bio xml:lang="en"><p>Maksim I. Kozlov - Department of Chemistry.</p><p>1 bld. 3 Leninskiye Gory, Moscow, 119899</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайцев</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaitsev</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Борисович Зайцев - физический факультет.</p><p>119899, Москва, Ленинские горы, д. 1, корп. 2</p></bio><bio xml:lang="en"><p>Vladimir B. Zaitsev - Department of Physics.</p><p>1 bld. 2 Leninskiye Gory, Moscow, 119899</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Климонский</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Limonskii</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Олегович Климонский - химический факультет.</p><p>119899, Москва, Ленинские горы, д. 1, корп. 3</p></bio><bio xml:lang="en"><p>Sergei O. Klimonskii - Department of Chemistry.</p><p>1 bld. 3 Leninskiye Gory, Moscow, 119899</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>28</day><month>11</month><year>2019</year></pub-date><volume>85</volume><issue>11</issue><fpage>19</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Андреев М.Н., Дроздов А.А., Козлов М.И., Зайцев В.Б., Климонский С.О., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Андреев М.Н., Дроздов А.А., Козлов М.И., Зайцев В.Б., Климонский С.О.</copyright-holder><copyright-holder xml:lang="en">Andreev M.N., Drozdov A.A., Kozlov M.I., Zaitsev V.B., limonskii S.O.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.zldm.ru/jour/article/view/1100">https://www.zldm.ru/jour/article/view/1100</self-uri><abstract><p>В работе рассмотрены процессы фазового разделения, происходящие в системе Na2O–CaO–SiO2 (NCS), содержащей одновременно четыре различных микрокомпонента (Fe2O3, P2O5, Ag, Au). Синтезировали два стекла близкого состава с одним и тем же набором микрокомпонентов, но с различным содержанием золота и серебра. Варку стекла проводили в открытом платиновом тигле в электропечи при 1400 °C в течение 3 ч. Стекло вырабатывали на чугунную плиту с ограничителями и отжигали при 520 °C 1 ч. Формирование наночастиц происходило при вторичной термообработке при 550 – 600 °C. Показано, что фазовое разделение в образце, состав которого лежит на линии предела несмешиваемости в NCS-системе, происходит через образование наночастиц золота – серебра, построенных по типу ядро – оболочка: они служат центрами образования капель второй стеклофазы, обогащенной кремнеземом. Со временем внутри капель происходит кристаллизация кварца. Обсуждено влияние этих процессов на оптические свойства материала, в том числе дихроизм. Фазовое разделение подтверждено методом РЭМ, образование кварца доказано методом рентгенофазового анализа. Размер наночастиц рассчитан из электронных спектров методом компьютерного моделирования. Железо в полученных стеклах находится в степенях окисления +2 и +3, что определяет окраску стекла до вторичной термообработки и окраску термообработанного стекла в отраженном свете. Окраска стекла в проходящем свете после вторичной термообработки обусловлена поглощением света наночастицами. Показана зависимость формы наночастиц от соотношения золото – серебро в стекле: при исследуемых соотношениях она представляет собой удлиненный или сплюснутый эллипсоид.</p></abstract><trans-abstract xml:lang="en"><p>The phase separation in Na2O-CaO-SiO2 system containing four different microcomponents (Fe2O3, P2O5, Ag, Au) is studied. Two glass samples of close composition have been synthesized with the same set of the microcomponents and different content of gold and silver. Both glass samples have been melted in an open platinum crucible in an electric furnace at 1400°C for three hours and then poured and quenched on a cast iron plate and annealed at 520°C for one hour. Formation of the nanoparticles occurred upon secondary heat treatment at 550 – 600°C. The phase separation in the glass sample with a composition corresponding to the immiscibility limit in the NCS system occurs through formation of the core – shell type gold-silver nanoparticles, which serve as nucleation centers for the droplets of the second glass phase enriched in silica. Eventually, quartz crystallizes inside the droplets. The impact of these processes on the optical properties of the material including dichroism is discussed. The phase separation and quartz formation are confirmed by SEM and X-ray analysis data, respectively. The size of the nanoparticles was calculated from electron spectra using computer simulation. Iron in the glass samples thus obtained is in oxidation states +2 and +3, which determines the color of the glass before and after the secondary heat treatment in reflected light. The glass color in the transmitted light after the secondary heat treatment is attributed to the light absorption by nanoparticles. The dependence of the nanoparticle shape on the gold-silver ratio in glass is presented. The shape of nanoparticle is close to oblong or oblate ellipsoid within the range of the gold – silver ratios considered in the study.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>силикатные стекла</kwd><kwd>оптические свойства</kwd><kwd>дихроизм</kwd><kwd>наночастицы</kwd><kwd>фазовое разделение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>silicate glass</kwd><kwd>optical properties</kwd><kwd>dichroism</kwd><kwd>nanoparticles</kwd><kwd>phase separation</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">Romero M., Rincon J. Ma., Acosta A. Effect of iron oxide content on the crystallization of a diopside glass-ceramic glaze / J. Eur. Ceram. Soc. 2002. Vol. 2. P. 883 – 890. DOI: 10.1016/S0955-2219(01)00395-8.</mixed-citation><mixed-citation xml:lang="en">Romero M., Rincon J. Ma., Acosta A. 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