fwjТрение и и износTitle in english0000-00000000-0000AGU10.32864/0202-4977-2025-46-4-354-362fwj-71Research ArticleСтатьиТриботехнические характеристики композитов БрА7–W–WC, полученных методом электронно-лучевого аддитивного производстваTribotechnical Characteristics of CuAl7–W–WC Composites Fabricated by Electron Beam Additive ManufacturingМосквичевЕ. Н.MoskvichevE. N.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

em_tsu@mail.ruШамаринН. Н.ShamarinN. N.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

СавченкоН. Л.SavchenkoN. L.

пр. Академический, 2/4, г. Томск 634055 

pr. Akademicheskii, 2/4, Tomsk 634055 

Институт физики прочности и материаловедения Сибирского отделения Российской академии наукРоссияInstitute of Strength Physics and Materials Science Siberian Branch of Russian Academy of SciencesRussian Federation202529092026464354362Copyright © AGU, 20262026AGUAGUhttps://fwj.ejournal.by/jour/about/submissions#copyrightNoticehttps://fwj.ejournal.by/jour/article/view/71

В работе представлено исследование по созданию и оценке трибологических характеристик металло-матричных композиционных материалов (ММК) на основе алюминиевой бронзы БрА7, армированных частицами вольфрама (W) и карбида вольфрама (WC), с использованием технологии электронно-лучевого аддитивного производства (ЭЛАП).Цель работы — получение износостойких материалов на основе алюминиевой бронзы со сформированным приповерхностным композиционным слоем CuAl7–W–WC, изучение их триботехнических характеристик в условиях трения без смазочного материала при комнатных и повышенных температурах в воздушной среде.Авторы применили комбинированный проволочно-порошковый метод подачи материала, что позволило получить композитные покрытия с равномерным распределением армирующей фазы. Были изготовлены образцы из чистой бронзы (CuAl7), и композиты, содержащие 10 об. % (CuAl7–W5–WC5) и 20 об. % (CuAl7–W10–WC10) армирующих частиц в составе. Установлено, что добавление W и WC существенно снижает интенсивность изнашивания по сравнению с чистой бронзой. В то же время коэффициенты трения композитов сопоставимы с таковыми у исходного материала.Выявлен характер износа полученных ММК, который носит преимущественно окислительный характер с формированием многослойной трибоплёнки, содержащей оксиды меди и железа, действующей как сухая смазка. Присутствие армирующих частиц ограничивает контакт с контртелом и подавляет пластическую деформацию матрицы, что положительно сказывается на износостойкости материала. Работа демонстрирует потенциал ЭЛАП-технологий в прецизионной модификации поверхностных свойств изделий и расширяет представление о механизмах износа ММК при высокотемпературном трении. Полученные материалы могут быть использованы при изготовлении деталей с повышенными требованиями к износостойкости, например, в машиностроении и авиации.

This work presents a study on the development and evaluation of the tribological characteristics of metal matrix composites (MMCs) based on aluminum bronze CuAl7, reinforced with tungsten (W) and tungsten carbide (WC) particles, produced using electron beam additive manufacturing (EBAM).The aim of the study is to obtain wear-resistant materials based on aluminum bronze with a surfaceengineered composite layer of CuAl7–W–WC and to investigate their tribological performance under dry sliding conditions at room and elevated temperatures in air.The authors employed a combined wire–powder feed method, which enabled the fabrication of composite coatings with a uniform distribution of the reinforcing phase. Samples were produced from pure bronze (CuAl7), as well as composites containing 10 vol. % (CuAl7–W5–WC5) and 20 vol. % (CuAl7–W10–WC10) of reinforcing particles. It was established that the addition of W and WC significantly reduces the wear rate compared to pure bronze, while the friction coefficients of the composites remain comparable to those of the base material.The wear mechanisms of the obtained MMCs were identified as predominantly oxidative, with the formation of a multilayered tribofilm containing copper and iron oxides, acting as a solid lubricant. The presence of reinforcing particles limits direct contact with the counterbody and suppresses plastic deformation of the matrix, thereby enhancing wear resistance. This study demonstrates the potential of EBAM technology for precise surface modification and provides new insights into the wear mechanisms of MMCs under hightemperature sliding conditions. The developed materials can be used in the manufacturing of components with enhanced wear resistance, such as those used in mechanical engineering and aerospace applications.

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The authors declare that there are no conflicts of interest present.