Microstructural features and hardness of Al2O3-Cu composites obtained by high-energy ball milling and spark plasma sintering

Microstructural features and hardness of Al2O3-Cu composites obtained by high-energy ball milling and spark plasma sintering Научная публикация

Журнал

Materials Letters
ISSN: 0167-577X

Вых. Данные

Год: 2026, Номер статьи : 141608, Страниц : 5 DOI: 10.1016/j.matlet.2026.141608

Ключевые слова

Copper, Alumina, Spark plasma sintering, High-energy ball milling, Composite, Hardness

Авторы

Dudina Dina V. ¹ , Esikov Maksim A. ¹ , Bokhonov Boris B. ² , Batraev Igor S. ¹ , Shutov Alexey V. ¹

Организации

1	Lavrentyev Institute of Hydrodynamics SB RAS, Lavrentyev Ave. 15, Novosibirsk 630090, Russia
2	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630090, Russia

The present work was aimed to demonstrate the potential of high-energy ball milling (HEBM) combined with spark plasma sintering (SPS) to fabricate 50 vol% Al2O3–Cu composites with enhanced mechanical performance. After HEBM of the Al2O3-Cu mixture for only 10 min, the particle size of alumina decreased from 10-40 μm to <5 μm. The HEBM powder agglomerates featured uniform distribution of the phases. Nearly fully dense composites were obtained by SPS of the HEBM mixture at 950 ◦C for 20 min. In the composites sintered from the HEBM mixture, the densification was accompanied by the formation of thin Cu-rich layers between the Al2O3-Cu agglomerates. The structural refinement induced by HEBM allowed obtaining composites with a hardness of 300 HV, which is five times the hardness of unreinforced copper.

Dudina D.V. , Esikov M.A. , Bokhonov B.B. , Batraev I.S. , Shutov A.V.
Microstructural features and hardness of Al2O3-Cu composites obtained by high-energy ball milling and spark plasma sintering
Materials Letters. 2026. 141608 :1-5. DOI: 10.1016/j.matlet.2026.141608 WOS Scopus OpenAlex

Поступила в редакцию:	31 авг. 2026 г.
Принята к публикации:	7 сент. 2026 г.
Опубликована online:	9 сент. 2026 г.

≡ Web of science:	WOS:001875448900001
≡ Scopus:	2-s2.0-105050237867
≡ OpenAlex:	W7212033881