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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.12737/10391</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-234</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="en"><subject>MACHINE BUILDING AND MACHINE SCIENCE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАШИНОСТРОЕНИЕ И МАШИНОВЕДЕНИЕ</subject></subj-group></article-categories><title-group><article-title>Study of ferromagnetic nanoparticles effect on tribotechnical lubricating characteristics</article-title><trans-title-group xml:lang="ru"><trans-title>Изучение влияния ферромагнитных наночастиц на триботехнические характеристики смазок</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>Задошенко</surname><given-names>Елена Геннадьевна</given-names></name><name name-style="western" xml:lang="en"><surname>Zadoshenko</surname><given-names>Elena Gennadyevna</given-names></name></name-alternatives><email xlink:type="simple">zadoshenkoq@rambler.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>Бурлакова</surname><given-names>Виктория Эдуардовна</given-names></name><name name-style="western" xml:lang="en"><surname>Burlakova</surname><given-names>Victoria Eduardovna</given-names></name></name-alternatives><email xlink:type="simple">vburlakova@donstu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донской государственный технический университет, г. Ростов-на-Дону, Российская Федерация</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University, Rostov-on-Don, Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2015</year></pub-date><volume>15</volume><issue>1</issue><fpage>85</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zadoshenko E.G., Burlakova V.E., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Задошенко Е.Г., Бурлакова В.Э.</copyright-holder><copyright-holder xml:lang="en">Zadoshenko E.G., Burlakova V.E.</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.vestnik-donstu.ru/jour/article/view/234">https://www.vestnik-donstu.ru/jour/article/view/234</self-uri><abstract><p>The research objective is to study tribological properties of the lubricating compositions based on the Castrol oil and ZIATIM -201 plastic lubricant modified by the ferromagnetic nanosuspension. A qualitative X-ray phase analysis by the diffractometry method is conducted on the ARL X´TRA computerized system to specify the compound of the synthesized ferromagnetic nanoparticles. An aqueous suspension of ferromagnetic nanoparticles is studied on CPS Disk Centrifuge Model DC24000 to determine the particle sizes. The investigation has been conducted by determining the tribological characteristics using four-ball machine. The preparation of lubricating compositions based on a number of sequence operations - ferromagnetic particles synthesis, their stabilization, and paste concentrate preparation - is described. On the basis of the X-ray data, it is found that the ferromagnetic particles composition corresponds to FeFe2 O4 magnetite. The sedimentation analytical data processing has shown the polydisperse nature of the derived magnetite nanoparticles. Based on the tribological studies, the antiwear properties are evaluated in wear scar diameter, the load wear index value is calculated, and the bearing capacity of the lubricant according to the welding load and critical load for the lubricants under study is identified. Thus, it is found that the lubricant compositions with magnetite additives based on ZIATIM -201 plastic lubricant and Castrol oil with magnetite content of 0.1% wt. offer high antiwelding and antiwear properties. Increase in the magnetite content in lubricants leads to the degradation of their antiwear properties.</p></abstract><trans-abstract xml:lang="ru"><p>Для уточнения состава синтезированных ферромагнитных частиц проводили качественный рентгенофазовый анализ методом дифрактометрии на автоматизированном приборе ARL X´TRA . Для определения размеров частиц изучена водная суспензия ферромагнитных наночастиц на дисковой центрифуге CPS Disk Centrifuge Model DC 24000. Исследования проводились методом определения трибологических характеристик с использованием четырехшариковой машины трения. На основе данных рентгенограмм в работе установлен состав ферромагнитных частиц, соответствующий магнетиту FeFe2 O4. Обработка результатов седиментационного анализа показала полидисперсный характер полученных наночастиц магнетита. На основе трибологических исследований проведена оценка противоизносных свойств по величине диаметра пятна износа, расчет величин индекса задира, установлена несущая способность смазки по нагрузке сваривания и критической нагрузке для исследуемых смазок. Таким образом установлено, что смазочные композиции с добавками магнетита на основе пластической смазки «Циатим-201» и масла Castrol с содержанием магнетита 0,1 % мас. обладают высокими противозадирными и противоизносными свойствами. Увеличение содержания магнетита в смазках приводит к снижению их противоизносных свойств.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитные наночастицы</kwd><kwd>химическая конденсация</kwd><kwd>магнетит</kwd><kwd>смазка</kwd><kwd>трение</kwd><kwd>износ</kwd><kwd>противоизносные и противозадирные свойства</kwd><kwd>ferromagnetic nanoparticles</kwd><kwd>chemical condensation</kwd><kwd>magnetite</kwd><kwd>lubricant</kwd><kwd>friction</kwd><kwd>wear</kwd><kwd>antiwear and antiwelding properties</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">Lu, A.-H. Magnetic nanoparticles: synthesis, protection, functionalization and application / A.-H. Lu, E.-L. Salabas, F. Schuth // Angewandte Chemie International Edition. - 2007. - Vol. 46, iss. 8. - P. 1222-1244.</mixed-citation><mixed-citation xml:lang="en">Lu, A.-H., Salabas, E.-L., Schuth, F. 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