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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-2016-4-11-16</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-250</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 РАСТВОРИМОСТИ НАНОПОРОШКОВ СИСТЕМЫ ZrO2–Y2O3–CeO2–Al2O3 В ВОДНОЙ СРЕДЕ ПРИ РАЗЛИЧНОМ pH</article-title><trans-title-group xml:lang="en"><trans-title>STUDYING OF THE DISSOLUTION PROCESS OF ZrO2–Y2O3–CeO2–Al2O3 NANOPOWDERS SYSTEM IN AQUEOUS MEDIA AT DIFFERENT pH</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>Макарова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры «Материалы, технологии и конструирование машин»</p></bio><bio xml:lang="en"><p>postgraduate student, Department «Materials, technologies and design of machines»</p></bio><email xlink:type="simple">Katimak59@gmail.com</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>Анциферова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Antsiferova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, профессор кафедры «Материалы, технологии и конструирование машин», кафедры «Менеджмент и маркетинг»</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof., Department «Materials, technologies and design of machines», Department «Management and marketing»</p></bio><email xlink:type="simple">iranciferova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Пермский национальный исследовательский политехнический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Perm National Research Polytechnic University (PNRPU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>02</day><month>02</month><year>2017</year></pub-date><volume>0</volume><issue>4</issue><fpage>11</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Макарова Е.Н., Анциферова И.В., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Макарова Е.Н., Анциферова И.В.</copyright-holder><copyright-holder xml:lang="en">Makarova E.N., Antsiferova I.V.</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://powder.misis.ru/jour/article/view/250">https://powder.misis.ru/jour/article/view/250</self-uri><abstract><p>Исследованы нанопорошки систем ZrO2–Y2O3–CeO2 и ZrO2–Y2O3–CeO2–Al2O3 с целью изучения влияния pH дисперсионной среды на растворимость частиц нанопорошков сложного состава в водной среде после мембранной фильтрации и центрифугации для получения в дальнейшем стабильных дисперсий, необходимых для токсикологических исследований наночастиц. Методом оптической эмиссионной спектроскопии с индуктивно связанной плазмой измерены концентрации элементов, оставшихся в супернатанте после пробоподготовки, включающей в себя мембранную фильтрацию и центрифугацию. Установлено, что наибольшей агрегативной устойчивости дисперсии нанопорошка без добавки Al2O3 соответствует оптимальный диапазон pH = 5,5÷9,5, а с добавкой Al2O3 – область pH = 7,0. Полученные результаты свидетельствуют, что при диспергировании данных порошков происходит образование гидрозоля оксогидроксида иттрия, который растворяется при pH &lt; 6,0. При растворении в воде порошка с добавкой Al2O3 в нейтральной среде образуется гидроксид алюминия, в кислой (pH &lt; 6) – его заменяют основные растворимые соли алюминия, а в щелочной (pH &gt; 7) – амфотерный гидроксид алюминия растворяется из-за образования алюминатов.</p></abstract><trans-abstract xml:lang="en"><p>The paper examines nanopowders of ZrO2–Y2O3–CeO2 and ZrO2–Y2O3–CeO2–Al2O3 systems in order to study the influence of a dispersion medium pH on the solubility of complex nanopowder particles in aqueous media after filtration and centrifugation for preparation of stable dispersions for further toxicological tests of nanoparticles. The concentration of elements remaining in the supernatant after sample preparation which includes membrane filtration and centrifugation is determined by inductively coupled plasma optical emission spectrometry. The paper defines main characteristics of dispersions of synthesized nanopowders such as the point zero of charge and zeta potential. It is found that the highest aggregate stability of nanopowder dispersion without Al2O3 additive lies in the optimal pH range from 5,5 to 9,5, while the highest aggregate stability of nanopowder dispersion with Al2O3 additive is at pH = 7,0. The obtained results indicate that dispersion of these powders leads to formation of yttrium oxyhydroxide hydrosol dissolved at pH &lt; 6,0. Aluminum hydroxide is formed when the powder with Al2O3 additive is dissolved in neutral aqueous media, while in acidic media (pH &lt; 6) basic soluble salts are formed instead of aluminum hydroxide, and in alkaline media (pH &gt; 7) amphoteric aluminum hydroxide is dissolved due to the formation of aluminates</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наночастицы</kwd><kwd>размер</kwd><kwd>степень агломерации</kwd><kwd>система ZrO2–Y2O3–CeO2–Al2O3</kwd><kwd>биоинертная керамика</kwd><kwd>растворение</kwd><kwd>водные дисперсии</kwd><kwd>гидрозоль оксогидроксида иттрия</kwd><kwd>агрегативная устойчивость</kwd><kwd>метод оптической эмиссионной спектроскопии с индуктивно связанной плазмой</kwd><kwd>токсичность</kwd><kwd>нанотоксикология</kwd><kwd>высокоскоростная седиментация</kwd><kwd>практические рекомендации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanoparticles</kwd><kwd>size</kwd><kwd>agglomeration degree</kwd><kwd>ZrO2–Y2O3–CeO2–Al2O3system</kwd><kwd>bioinert ceramics</kwd><kwd>solubility</kwd><kwd>aqueous dispersions</kwd><kwd>yttrium oxyhydroxide hydrosol</kwd><kwd>aggregate stability inductively coupled plasma optical emission</kwd><kwd>toxicity</kwd><kwd>nanotoxicology</kwd><kwd>differential centrifugal sedimentation</kwd><kwd>practical recommendations</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">Chevalier J., Gremillard L. 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