The effect of electron-beam sintering in the fore-vacuum pressure range (8…10 Pa) on the density, structure, and phase composition of the sintered Al2O3–Cu composite with a component mass ratio of 10:1 was investigated. It was established that the maximum density of the sintered composite (2.85 g/cm3) is achieved at a temperature of 1300 °C. It was also shown that upon heating above 1100 °C, copper migrates to the surface and evaporates, forming a depleted near-surface layer. The metallic Cu phase was detected only at 1100 °C (2 wt. %), whereas at higher temperatures only traces of CuO were present. The obtained results confirm the feasibility of producing gradient Al2O3–Cu structures using this method.
Aleksandr S. Klimov – Doctor of Technical Sciences, Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Ilya Yu. Bakeev – Associate Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Sergey A. Enduraev – student, Department of Physical Electronics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Aleksey A. Zenin – Associate Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Oksana V. Fyodorova – Associate Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
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DOI: 10.14489/glc.2026.07.pp.010-017
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