powderИзвестия вузов. Порошковая металлургия и функциональные покрытияPowder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)1997-308X2412-8767НИТУ "МИСИС"10.17073/1997-308X-2025-6-52-64powder-1063Research ArticleТугоплавкие, керамические и композиционные материалыRefractory, Ceramic, and Composite MaterialsВлияние добавки Cu и давления прессования СВС-шихты на инфильтрацию термитной меди и макроструктуру синтезированных керметов TiC–CuEffect of Cu additions and SHS charge compaction pressure on thermite-copper infiltration and the macrostructure of synthesized TiC–Cu cermetshttps://orcid.org/0009-0006-8876-4321КаракичЕ. А.KarakichE. A.

Егор Андреевич Каракич – аспирант, мл. науч. сотрудник кафедры «Металловедение, порошковая металлургия, наноматериалы» (МПМН)

Россия, 443100, г. Самара, ул. Молодогвардейская, 244

Egor A. Karakich – Post-graduate student, Junior Researcher of the Department of Metal Science, Powder Metallurgy, and Nanomate­rials (MSPMN)

244 Molodogvardeyskaya Str., Samara 443100, Russia

maximcaracki4@gmail.comhttps://orcid.org/0000-0002-2050-6899УмеровЭ. Р.UmerovE. R.

Эмиль Ринатович Умеров – к.т.н, вед. науч. сотрудник кафед­ры МПМН

Россия, 443100, г. Самара, ул. Молодогвардейская, 244

Emil R. Umerov – Cand. Sci. (Eng.), Leading Researcher of the Department of MSPMN

244 Molodogvardeyskaya Str., Samara 443100, Russia

umeroff2017@yandex.ruhttps://orcid.org/0000-0002-8052-305XНовиковВ. А.NovikovV. A.

Владислав Александрович Новиков – к.т.н, доцент кафедры МПМН

Россия, 443100, г. Самара, ул. Молодогвардейская, 244

Vladislav A. Novikov – Cand. Sci. (Eng.), Associate Professor of the Department of MSPMN

244 Molodogvardeyskaya Str., Samara 443100, Russia

vladislav_novyi@mail.ruhttps://orcid.org/0000-0003-0577-2889КичаевП. Е.KichaevP. E.

Евгений Петрович Кичаев – к.ф.-м.н, доцент кафедры «Механика»

Россия, 443100, г. Самара, ул. Молодогвардейская, 244

Evgeniy P. Kichaev – Cand. Sci. (Phys.-Math.), Associate Professor of the Department of Mechanics

244 Molodogvardeyskaya Str., Samara 443100, Russia

mech_kaf@samgtu.ruhttps://orcid.org/0000-0002-1510-6567АмосовА. П.AmosovA. P.

Александр Петрович Амосов – д.ф.-м.н, профессор кафедры МПМН

Россия, 443100, г. Самара, ул. Молодогвардейская, 244

Alexander P. Amosov – Dr. Sci. (Phys.-Math.), Head of the Department of MSPMN

244 Molodogvardeyskaya Str., Samara 443100, Russia

egundor@yandex.ruСамарский государственный технический университетРоссияSamara State Technical UniversityRussian Federation2025100120261965264Copyright © НИТУ "МИСИС", 20262026НИТУ "МИСИС"НИТУ "МИСИС"https://powder.misis.ru/jour/about/submissions#copyrightNoticehttps://powder.misis.ru/jour/article/view/1063

В литературных источниках последних лет достаточно широко рассмотрены свойства и структура керамико-металлических композитов (керметов) системы TiC–Cu. Однако условия их образования в большинстве своем затрагивают случаи введения частиц TiC в перегретый расплав Cu. В данной работе образцы синтезировались на открытом воздухе без применения тиглей-реакторов путем сочетания термитной реакции для получения расплава меди, последующей инфильт­рации пористой порошковой шихты Ti + C расплавом и инициации ее горения самораспространяющимся высокотемпературным синтезом (СВС) карбида титана. В результате образовывался кермет состава TiC–Cu. Представлен анализ влияния добавки меди в СВС-шихту Ti + C и давления ее прессования на полноту пропитки медным расплавом, полученным в результате горения медной термитной смеси. Также рассмотрено влияние вышеизложенных факторов на структуру синтезируемого кермета. Проведены исследования по синтезу керметов TiC–Cu при введении 5, 10, 15 мас. % Cu в СВС-шихты, спрессованные под давлением 22, 34, 45, 56, 69 МПа. Полнота инфильтрации определялась по внешнему виду шлифа сечения кермета, микроструктуре и составу. Определены оптимальные условия, при которых получаются композиты с наибольшей плотностью, наименьшим количеством дефектов структуры, заданным фазовым составом и высокими механическими характеристиками. Исследованы микроструктура, состав и физико-механические свойства (плотность, твердость по Бринеллю, прочность при сжатии) новых композитов. Установлено, что наибольшие полнота пропитки и плотность полученных образцов TiC–Cu достигаются при добавке меди в СВС-шихту в количестве 10 мас. % и давлении прессования СВС-шихты 45 МПа. Показано, что с увеличением доли меди в шихте возрастают значения механических свойств (твердость, предел прочности на сжатие).

TiC–Cu ceramic–metal composites (cermets) have been extensively discussed in recent literature in terms of their properties and structure. However, in most cases the formation conditions considered involve the introduction of TiC particles into an overheated Cu melt. In the present work, samples were synthesized in air without crucible reactors by combining a thermite reaction to produce a copper melt for subsequent infiltration of a porous Ti + C powder charge and initiation of its combustion by self-propa­gating high-temperature synthesis (SHS) of titanium carbide. As a result, TiC–Cu cermets were formed. The effect of Cu addition to the Ti + C SHS charge and of compaction pressure on the completeness of infiltration by the copper melt genera­ted during combustion of the copper thermite mixture is analyzed. The influence of these factors on the structure of the synthesized cermets is also examined. TiC–Cu cermets were synthesized with 5, 10, and 15 wt. % Cu added to SHS charges compacted at 22, 34, 45, 56, and 69 MPa. The completeness of infiltration was evaluated from the appearance of polished sections, microstructure, and phase composition. Optimal conditions were identified that provide composites with maximum density, minimal structural defects, the desired phase composition, and enhanced mechanical properties. The microstructure, composition, and physico-mechanical properties (density, Brinell hardness, compressive strength) of the new composites were investigated. It was established that the highest infiltration completeness and density of TiC–Cu samples are achieved at 10 wt. % Cu addition to the SHS charge and a compaction pressure of 45 MPa, while increasing Cu content in the charge leads to higher mechanical properties (hardness and compressive strength).

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