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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2023-67-4-331-339</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1145</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Анализ процесса превращения в алмаз тонкого слоя графитоподобного углерода на поверхности детонационного наноалмаза</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of transformation of a thin graphite-like carbon layer on the detonation nanodiamond surface into diamond</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9950-2120</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Витязь</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vityaz</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Витязь Петр Александрович – академик, д-р техн. наук, профессор, главный научный сотрудник</p><p>ул. Академическая, 12, 220072, Минск</p></bio><bio xml:lang="en"><p>Vityaz Petr A. – Academician, D. Sc. (Engineering), Professor. Chief Researcher</p><p>12, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">vitiaz@presidium.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1595-8516</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сенють</surname><given-names>В. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Senyut</surname><given-names>V. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Cенють Владимир Тадеушевич – кандидат технических наук, доцент, старший научный сотрудник</p><p>ул. Академическая, 12, 220072, Минск</p></bio><bio xml:lang="en"><p>Senyut Vladimir T. – Ph. D. (Engineering), Associate Professor, Leading Researcher</p><p>12, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">vsenyut@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-2162-2488</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парницкий</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Parnitskiy</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парницкий Александр Михайлович – кандидат технических наук, доцент, старший научный сотрудник</p><p>ул. Академическая, 12, 220072, Минск</p></bio><bio xml:lang="en"><p>Parnitskiy Alexander M. – Ph. D. (Engineering), Associate Professor, Senior Researcher</p><p>12, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">europacorp@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Объединенный институт машиностроения Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>09</month><year>2023</year></pub-date><volume>67</volume><issue>4</issue><fpage>331</fpage><lpage>339</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Витязь П.А., Сенють В.Т., Парницкий А.М., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Витязь П.А., Сенють В.Т., Парницкий А.М.</copyright-holder><copyright-holder xml:lang="en">Vityaz P.A., Senyut V.T., Parnitskiy A.M.</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://doklady.belnauka.by/jour/article/view/1145">https://doklady.belnauka.by/jour/article/view/1145</self-uri><abstract><p>Рассмотрен процесс получения наноструктурных алмазных материалов за счет фазового превращения в алмаз тонких пленок на основе неалмазных форм углерода, сформированных на поверхности наноалмаза. Для синтеза наноструктурного алмазного поликристаллического сверхтвердого материала предложены различные варианты исходной шихты на основе наноалмаза с неалмазным углеродом на поверхности (поверхностно-графитизированный наноалмаз, поверхностно-графитизированный наноалмаз с добавкой очищенного наноалмаза, детонационная алмазосодержащая шихта с поверхностным слоем «аморфного» углерода, в т. ч. с добавкой очищенного наноалмаза). Выявлено влияние структуры тонкого неалмазного слоя на параметры перехода графита в алмаз. Для углеродной пленки с неупорядоченной структурой (так называемый аморфный углерод) давление перехода в алмаз составит порядка 10–15 ГПа, что существенно выше давления фазового превращения для тонких пленок графита в данном температурном диапазоне. Показано, что рост давления превращения тонкого слоя «аморфного» углерода вызван его более низкой поверхностной энергией по сравнению с поверхностной энергией графита. Установлено, что область превращения тонкой графитоподобной пленки толщиной порядка 1 нм, сформированной на поверхности наноалмаза размером 2–10 нм, в алмаз будет находиться ниже линии равновесия графит–алмаз в диапазоне температур 1000–2500 °С. Дополнительное введение очищенных частиц наноалмазов приводит к снижению давления превращения тонких слоев неалмазного углерода в алмазную структуру с 10–15 до 2–7 ГПа, что обусловлено влиянием поверхности каталитически активных алмазных наночастиц.</p></abstract><trans-abstract xml:lang="en"><p>The article considers the process of obtaining nanostructured diamond materials due to phase transformation of thin films based on carbon non-diamond forms on the nanodiamond surface into diamond. For the synthesis of nanostructured diamond polycrystalline superhard material, various variants of the initial mixture based on nanodiamond with non-diamond carbon on the surface are proposed (surface-graphitized nanodiamond, surface-graphitized nanodiamond with addition of purified nanodiamond, detonation diamond-containing charge with a surface layer of “amorphous” carbon, including purified nanodiamond additives). The influence of the structure of a thin non-diamond layer on the parameters of graphite to diamond transition is revealed. For a carbon film with a disordered structure (the so-called “amorphous” carbon), the transition pressure to diamond will be about 10–15 GPa, which is significantly higher than the phase transformation pressure for thin graphite films in this temperature range. It is shown that the increase in the pressure of transformation of a thin layer of “amorphous” carbon is caused by its lower surface energy compared to the surface energy of graphite. It has been established that the region of transformation of a thin graphite-like film with a thickness of about 1 nm, formed on the 2–10 nm nanodiamond surface into diamond will be below the graphite-diamond equilibrium line in the temperature range of 1000– 2500 °C. Additional introduction of purified nanodiamond particles leads to a decrease in the pressure of transformation of thin layers of non-diamond carbon into a diamond structure from 10–15 to 2–7 GPa, which is due to the effect of the surface of catalytically active diamond nanoparticles on the thermodynamic stimulus of phase transformation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наноалмаз</kwd><kwd>неалмазные формы углерода</kwd><kwd>диаграмма состояния</kwd><kwd>фазовые превращения</kwd><kwd>химический потенциал</kwd><kwd>наноструктурный поликристаллический материал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanodiamond</kwd><kwd>non-diamond  forms of  carbon</kwd><kwd>state  diagram</kwd><kwd>phase  transformations</kwd><kwd>chemical  potential</kwd><kwd>nanostructured polycrystalline material</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке БРФФИ (проект № Т23КИТГ-001)</funding-statement><funding-statement xml:lang="en">The work was carried out with the financial support of the BRFFR (project No. Т23КИТГ-001)</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Синтез и спекание сверхтвердых материалов для производства инструмента / Н. 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