In-situ electron-beam synthesis of boride phases FROM LaB6/Ti system

IF 0.4 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Russian Physics Journal Pub Date : 2025-01-09 DOI:10.1007/s11182-024-03338-3

E. V. Yakovlev, A. V. Solovyov, E. A. Pesterev, V. I. Petrov, A. B. Markov

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Abstract

The paper deals with the direct synthesis of titanum borides from lanthanum hexaboride layers deposited onto a titanium substrate followed by processing with a microsecond low-energy high-current electron beam (LEHCEB). It is shown how the electron-beam energy density affects the structure and properties of the obtained surface layer. The latter consists of 54 to 41 at.% B, depending on the LEHCEB processing mode. Microstructure investigations show that the surface layer is a nanostructured composite consisting of a mixture of TiB and TiB₂ particles distributed in the submicrocrystalline α‑Ti matrix. The boride particle size ranges between 10 and 70 nm, depending on the synthesis modes. It is shown that the formation of the composite nanostructure improves the nanohardness and wear resistance of the synthesized surface layer. When the content of boride phases is the highest, the nanohardness grows up to 12.5 GPa or by 3.9 times, while the wear resistance becomes more than 5 times higher than in the initial titanium substrate.

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来源期刊

Russian Physics Journal PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

50.00%

发文量

208

审稿时长

3-6 weeks

期刊介绍： Russian Physics Journal covers the broad spectrum of specialized research in applied physics, with emphasis on work with practical applications in solid-state physics, optics, and magnetism. Particularly interesting results are reported in connection with: electroluminescence and crystal phospors; semiconductors; phase transformations in solids; superconductivity; properties of thin films; and magnetomechanical phenomena.