Investigation into the Peculiarities of Structure Formation and Properties of Copper-Based Powder Pseudoalloys Modified by ZnO and TiN Nanoparticle Additives
URI (для ссылок/цитирований):
https://link.springer.com/article/10.3103/S1067821219010048https://elib.sfu-kras.ru/handle/2311/128871
Автор:
Gordeev, Yu. I.
Abkaryan, A. K.
Surovtsev, A. V.
Lepeshev, A. A.
Коллективный автор:
Политехнический институт
Кафедра машиностроения
Дата:
2019-05Журнал:
REFRACTORY, CERAMIC,AND COMPOSITE MATERIALSКвартиль журнала в Scopus:
Q2Квартиль журнала в Web of Science:
Q4Библиографическое описание:
Gordeev, Yu. I. Investigation into the Peculiarities of Structure Formation and Properties of Copper-Based Powder Pseudoalloys Modified by ZnO and TiN Nanoparticle Additives [Текст] / Yu. I. Gordeev, A. K. Abkaryan, A. V. Surovtsev, A. A. Lepeshev // REFRACTORY, CERAMIC,AND COMPOSITE MATERIALS. — 2019. — Т. 60 (№ 1). — С. 68-75Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
Comprehensive investigations into Cu–ZnO (nano) and Cu–TiN (nano) copper-based materials
by standard methods in combination with metallographic and electron microscopy investigations using
energy-dispersive and thermal analyses make it possible to identify stable correlation relations between the
content of nanoparticle additives, microstructural parameters, and mechanical-and-physical properties of
pseudoalloys. Process procedures of increasing the distribution uniformity of modifying additives of ZnO and
TiN nanoparticles over the pseudoalloy bulk excluding their conglomeration are developed and substantiated.
Novel original methods of nanoparticle introducing into a matrix material in the form of a master alloy made
of Cu–Al–ZnO or copper powders coated with TiN nanoparticles are proposed. A high specific surface and
reactivity of nanopowders make it possible to lower the ceramic phase in electrocontact materials (down to
2.0–3.0% instead of 10–15% when compared with known commercial brands). This results in the conservation
of the main properties characteristic of the matrix material (copper) such as thermal and electrical conductivity
at a rather high level, while the general level of physicomechanical characteristics (hardness,
strength, and wear resistance) and operational properties of composite pseudoalloys simultaneously
increases. The main characteristics of copper-based composite materials are as follows: electrical resistance
(ρ = 0.025 μΩ m), bonding strength to the contact support material (σ ~ 2 MPa), and dispersed ceramic
phase inclusions. They reduce the electroerosive wear (up to a factor of 2.5) when compared with conventional
materials.