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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-2025-3-15-24</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-1001</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>Теория и процессы формования и спекания порошковых материалов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Theory and Processes of Formation and Sintering of Powder Materials</subject></subj-group></article-categories><title-group><article-title>Разработка гранулята на полиформальдегидном связующем на основе порошка нержавеющей стали 09Х16Н4Б для MIM-технологии</article-title><trans-title-group xml:lang="en"><trans-title>Development of a polyoxymethylene-based feedstock for metal injection molding using 09Cr16Ni4Nb stainless steel powder</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-0442-0044</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пархоменко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Parkhomenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Валерьевич Пархоменко – аспирант кафедры «Металловедение, порошковая металлургия, наноматериалы» (МПМН)</p><p>Россия, 443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Andrei V. Parkhomenko – Graduate Student of the Department of Metallurgy, Powder Metallurgy, Nanomaterials (MPMN)</p><p>244 Molodogvardeiskaya Str., Samara 443100, Russia</p></bio><email xlink:type="simple">parhomandr@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1994-5672</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амосов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Amosov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Петрович Амосов – д.ф.-м.н., проф., заведующий кафедрой МПМН</p><p>Россия, 443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Aleksandr P. Amosov – Dr. Sci. (Phys.-Math.), Professor, Head of the Department of MPMN</p><p>244 Molodogvardeiskaya Str., Samara 443100, Russia</p></bio><email xlink:type="simple">egundor@yandex.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/0009-0003-6566-9872</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пастухов</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Pastukhov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Михайлович Пастухов – аспирант кафедры «Информационно-измерительная техника и метрология»</p><p>Россия, 440026, г. Пенза, ул. Красная, 40</p></bio><bio xml:lang="en"><p>Alexandr M. Pastukhov – Graduate Student of the Department of Information and Measuring Equipment and Metrology</p><p>40 Krasnaya Str., Penza 440026, Russia</p></bio><email xlink:type="simple">alexpastuch@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Пензенский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Penza State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>06</month><year>2025</year></pub-date><volume>19</volume><issue>3</issue><fpage>15</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">НИТУ "МИСИС"</copyright-holder><copyright-holder xml:lang="en">НИТУ "МИСИС"</copyright-holder><license xlink:href="https://powder.misis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://powder.misis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://powder.misis.ru/jour/article/view/1001">https://powder.misis.ru/jour/article/view/1001</self-uri><abstract><p>Металлические порошки нержавеющей стали являются наиболее распространенными исходными материалами, применяемыми для производства малогабаритных высокоточных машиностроительных деталей по технологии инжекционного формования металлических порошков с расплавами полимеров (MIM-технологии). Настоящая работа посвящена разработке состава и технологических режимов изготовления исходного сырья (гранулята) для производства деталей по МIM-технологии из отечественных компонентов: порошка нержавеющей стали мартенситного класса 09Х16Н4Б, связующего на основе полиформальдегида и технологических добавок (стеариновой кислоты, пчелиного воска и полиэтилена высокого давления). Исходный порошок нержавеющей стали имел сферическую форму частиц с размером основной массы частиц в диапазоне от 8 до 23 мкм. С применением сканирующей электронной микроскопии, метода определения показателя текучести расплава термопластов и пикнометрического метода исследовались микроструктуры, реологические и физические свойства полученных гранулятов. Установлены зависимости показателя текучести расплава (ПТР) от содержания исходных компонентов гранулята, соотношения металлической и полимерной частей, количества и вида технологических добавок, гранулометрического состава металлической части. Опытным путем определена оптимальная рецептура гранулята. Приведены результаты исследования микроструктуры и физических свойств опытных образцов, изготовленных по MIM-технологии, в сравнении со спеченными образцами из импортного гранулята марки Catamold®. Показано, что для изделий, полученных по MIM-технологии, целесообразно использовать типовые режимы термообработки, поскольку схемы фазовых превращений не отличаются от традиционных для данного вида стали. Установлено, что образцы из разработанного гранулята соответствуют требованиям нормативных документов на применяемый материал и не уступают по физическим показателям гранулятам импортного производства.</p></abstract><trans-abstract xml:lang="en"><p>Stainless steel powders are among the most widely used raw materials for the production of small, high-precision engineering components by metal injection molding (MIM), a process that combines metal powders with molten polymer binders. This study focuses on the development of feedstock composition and processing parameters for MIM production using domestically sourced components: a martensitic stainless steel powder grade 09Cr16Ni4Nb, a polyoxymethylene-based binder, and processing additives including stearic acid, beeswax, and low-density polyethylene. The starting stainless steel powder had a spherical morphology with a predominant particle size range of 8–23 μm. Scanning electron microscopy, melt flow index (MFI) testing, and helium pycnometry were employed to investigate the microstructure, rheological behavior, and physical properties of the resulting feedstock granules. Dependencies of MFI on the feedstock composition, metal-to-polymer ratio, type and content of additives, and particle size distribution of the metallic phase were established. The optimal feedstock formulation was determined experimentally. The microstructure and physical properties of sintered samples produced from the developed feedstock were evaluated and compared with those made from imported Catamold® feedstock. It was demonstrated that standard heat treatment modes are suitable for MIM-fabricated parts, as the phase transformation behavior of the studied steel does not differ from that of conventionally processed materials. The results confirm that components manufactured from the in-house feedstock comply with relevant regulatory standards and match the performance of their imported counterparts.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>MIM-технология</kwd><kwd>инжекционное формование</kwd><kwd>литье под давлением</kwd><kwd>гранулят</kwd><kwd>фидсток</kwd><kwd>порошок нержавеющей стали</kwd><kwd>связующее</kwd><kwd>полиформальдегид</kwd><kwd>спекание</kwd><kwd>состав</kwd><kwd>структура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>MIM technology</kwd><kwd>injection molding</kwd><kwd>powder injection molding</kwd><kwd>feedstock</kwd><kwd>stainless steel powder</kwd><kwd>binder</kwd><kwd>polyoxymethylene</kwd><kwd>sintering</kwd><kwd>composition</kwd><kwd>structure</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">German R.M., Bose A. Injection molding of metals and ceramics. 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