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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">rmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Эталоны. Стандартные  образцы</journal-title><trans-title-group xml:lang="en"><trans-title>Measurement Standards. Reference Materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2687-0886</issn><publisher><publisher-name>D. I. Mendeleyev Institute for Metrology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20915/2077-1177-2023-19-4-35-50</article-id><article-id custom-type="elpub" pub-id-type="custom">rmjournal-420</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>Стандартные образцы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Reference materials</subject></subj-group></article-categories><title-group><article-title>Исследование стандартных образцов температуры и удельной энтальпии фазовых переходов металлов и солей металлов</article-title><trans-title-group xml:lang="en"><trans-title>Study of Certified Reference Materials for Temperature and Specific Enthalpy of Phase Transitions of Metals and Metal Salts</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8654-9189</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Непомилуев</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nepomiluev</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Непомилуев Андрей Михайлович – канд. хим. наук, старший научный сотрудник лаборатории термометрии и поверхностной плотности</p><p>620075, г. Екатеринбург, ул. Красноармейская, 4</p></bio><bio xml:lang="en"><p>Andrei M. Nepomiluev – Cand. Sci. (Chem.), Senior Researcher of the laboratory of thermometry and surface density</p><p>4 Krasnoarmeyskaya str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">nepomiluevam@uniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8499-369X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шипицын</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Shipitsyn</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шипицын Артем Павлович – ведущий инженер лаборатории термометрии и поверхностной плотности </p><p>620075, г. Екатеринбург, ул. Красноармейская, 4</p></bio><bio xml:lang="en"><p>Artyom P. Shipitsyn – Leading Engineer of the laboratory of thermometry and surface density</p><p>4 Krasnoarmeyskaya str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">shipitsyn@uniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2032-3427</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюрнина</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyurnina</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюрнина Анастасия Евгеньевна – канд. физ.-мат. наук, заместитель заведующего лабораторией термометрии и поверхностной плотности </p><p>620075, г. Екатеринбург, ул. Красноармейская, 4</p></bio><bio xml:lang="en"><p>Anastasiya E. Tyurnina – Cand. Sci. (Phys.-Math.), Deputy Head of the laboratory of thermometry and surface density</p><p>4 Krasnoarmeyskaya str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">anastasiya.uniim@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">УНИИМ – филиал ФГУП «ВНИИМ им. Д. И. Менделеева»<country>Россия</country></aff><aff xml:lang="en">UNIIM – Affiliated Branch of the D. I. Mendeleyev Institute for Metrology<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>24</day><month>09</month><year>2023</year></pub-date><volume>19</volume><issue>4</issue><fpage>35</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Непомилуев А.М., Шипицын А.П., Тюрнина А.Е., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Непомилуев А.М., Шипицын А.П., Тюрнина А.Е.</copyright-holder><copyright-holder xml:lang="en">Nepomiluev A.M., Shipitsyn A.P., Tyurnina A.E.</copyright-holder><license 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.rmjournal.ru/jour/article/view/420">https://www.rmjournal.ru/jour/article/view/420</self-uri><abstract><p>Разработка процедур калибровки, а также аттестация легкодоступных стандартных образцов (СО) и улучшение их метрологических характеристик являются актуальными вопросами для методов термического анализа.</p><p>В ходе работы обоснована необходимость проведения исследования с целью расширения ассортимента ГСО температуры и энтальпии фазовых переходов. Дано обоснование выбора метода измерений и исходных материалов. Подробно описаны условия проведения экспериментов, а также обоснован выбор данных условий.</p><p>Получены метрологические характеристики исследуемой партии СО: температура фазового перехода (Тфп), удельная энтальпия фазового перехода (Нфп). Аттестованные значения Тфп для разработанных СО на основе высокочистых металлов (Bi, Al, Ag, Au) согласуются с температурами реперных точек МТШ-90 с точностью не хуже ±0,01 °C. Аттестованные значения Нфп СО на основе высокочистых Bi, Al, Ag, Au согласуются с результатами, приведенными в справочных данных в пределах от 0,3 до 1,3 %.</p><p>Разработанные СО прошли метрологическую экспертизу и внесены в Реестр утвержденных типов стандартных образцов ФИФ ОЕИ в качестве комплекта стандартных образцов утвержденного типа температуры и удельной энтальпии фазовых переходов (набор СО СОТСФ-2) ГСО 11890–2022/ГСО 11896–2022.</p><p>Практическая значимость полученных результатов заключается в том, что аттестованные СО позволяют расширить возможности: а) установления и контроля стабильности градуировочной (калибровочной) характеристики установок и средств измерений термического анализа; б) аттестации методик (методов) измерений и контроля точности результатов измерений температуры и удельной энтальпии фазовых переходов в металлах, солях металлов, оксидах металлов, полимерных материалах, органических и неорганических веществах.</p></abstract><trans-abstract xml:lang="en"><p>The development of calibration procedures, as well as the certification of readily available reference materials (RMs) and the improvement of their metrological characteristics, are topical issues for thermal analysis methods. In the course of the work, the necessity of conducting a study in order to expand the range of CRMs for temperature and enthalpy of phase transitions is substantiated. The substantiation of the choice of the measurement procedure and starting materials is given. The conditions for conducting experiments are described in detail, and the choice of these conditions is justified. The developed CRMs passed the metrological examination and were included in the Register of approved types of reference materials FIF EUM as a set of certified reference materials for temperature and specific enthalpy of phase transitions (set SOTSF-2) GSO 11890–2022/GSO 11896–2022. The practical significance of the obtained results is as follows: certified reference materials allow expanding the possibility of establishing and monitoring the stability of the calibration characteristics of thermal analysis installations and measuring instruments; certification of measurement procedures (methods) and accuracy control of the measurement results of the phase transition temperature of metals, metal salts, metal oxides, and polymeric materials, organic and inorganic substances.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>стандартные образцы</kwd><kwd>термический анализ</kwd><kwd>температура фазового перехода</kwd><kwd>удельная энтальпия фазового перехода</kwd><kwd>государственный первичный эталон</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reference material</kwd><kwd>thermal analysis</kwd><kwd>phase transition temperature</kwd><kwd>specific enthalpy of phase transition</kwd><kwd>state primary standard</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Это исследование не получало финансовой поддержки в виде гранта от какой-либо организации государственного, коммерческого или некоммерческого сектора. Все измерения проводились с использованием оборудования ФГУП «ВНИИМ им. Д. И. Менделеева».</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The research did not receive financial support in the form of a grant from any organization in the public, commercial or non-profit sector. All measurements were performed using the equipment of the D. I. Mendeleyev Institute for Metrology.</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">Standards, calibration, and guidelines in microcalorimetry. Part 2. Calibration standards for differential scanning calorimetry (IUPAC Technical Report) / G. D. Gatta [et al.] // Pure and Applied Chemistry. 2006. Vol. 78, № 7. P. 1455–1476. https://doi.org/10.1351/pac200678071455</mixed-citation><mixed-citation xml:lang="en">Gatta G. D., Richardson M. J., Sarge S. M., Stölen S. 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