Structure and Properties of Composite Materials Sintered at High Pressure and Reinforced with Amorphous Boron Particles

I. N. Lukina; Лукина И. Н.; O. P. Chernogorova; Черногорова О. П.; E. I. Drozdova; Дроздова Е. И.; E. A. Ekimov; Екимов Е. А.

doi:10.31857/S0044453723010193

Structure and Properties of Composite Materials Sintered at High Pressure and Reinforced with Amorphous Boron Particles

作者: Lukina I.N.¹, Chernogorova O.P.¹, Drozdova E.I.¹, Ekimov E.A.²
隶属关系:
1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
2. Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences
期: 卷 97, 编号 1 (2023)
页面: 21-25
栏目: ПАМЯТИ Н.А. БУЛЬЕНКОВА
##submission.dateSubmitted##: 27.02.2025
##submission.datePublished##: 01.01.2023
URL: https://kld-journal.fedlab.ru/0044-4537/article/view/668860
DOI: https://doi.org/10.31857/S0044453723010193
EDN: https://elibrary.ru/BCKIXS
ID: 668860

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详细

Metal matrix composite materials (CMs) reinforced with boron particles are synthesized from powders of amorphous boron and metal (Ni, Ti) at a pressure of 8 GPa and temperatures of 500–1000°C. It is established that amorphous boron crystallizes during synthesis at temperatures above 800°С. Amorphous boron particles are characterized by a hardness of ~30 GPa, an indentation modulus of elasticity of up to 270 GPa, and an elastic recovery of more than 60%. The patterns of boride formation during high-pressure synthesis are studied. It is shown that the wear resistance of a Ni–B CM synthesized at 600°С grows by more than 30 times, relative to the wear resistance of pure nickel. Reinforcing titanium with 30% amorphous boron increases wear resistance by more than two orders of magnitude, but the coefficient of friction of CMs is reduced slightly.

关键词

composite materials, amorphous boron, thermobaric synthesis, crystallization, hardness, tribological properties

参考

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