Tribological characteristics of composite coatings formed by laser cladding of powders of nickel self-fluxing alloy and bronze


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

Microstructures, coefficients of friction, and relative wear of composite coatings based on the PG-12N-01 nickel self-fluxing alloy and PG-19M-01 bronze have been considered. It has been found that composite coatings have a complex structure. The bronze coating, which is deposited on the fillets of the nickel alloy, crystallizes in a form of dendrites with axes arranged under an angle of 45°. The nickel alloy has a globular-dendritic structure with the eutectic component crystallizing between its branches. Momentary coefficients of friction in conditions of the concentrated load are independent of the cladding rate, and their values are 0.08–0.12 depending on the load. In this case, the wear rate of coatings depends substantially on the laser cladding. Under conditions of the distributed contact, bilayer coatings have a considerable advantage, and the relative wear is reduced by several tens of times compared with single-layer ones.

Sobre autores

E. Feldshtein

Zielona Góra University

Autor responsável pela correspondência
Email: E.Feldsztein@ibem.uz.zgora.pl
Polônia, ul. prof. Z. Shafrana 4, Zielona Góra, 65-516

O. Devojno

Belarusian National Technical University

Email: E.Feldsztein@ibem.uz.zgora.pl
Belarus, pr. Nezavisimosti 65, Minsk, Belarus, 220013

M. Kardapolava

Belarusian National Technical University

Email: E.Feldsztein@ibem.uz.zgora.pl
Belarus, pr. Nezavisimosti 65, Minsk, Belarus, 220013

N. Lutsko

Belarusian National Technical University

Email: E.Feldsztein@ibem.uz.zgora.pl
Belarus, pr. Nezavisimosti 65, Minsk, Belarus, 220013

D. Żurek

Zielona Góra University

Email: E.Feldsztein@ibem.uz.zgora.pl
Polônia, ul. prof. Z. Shafrana 4, Zielona Góra, 65-516

M. Michalski

Zielona Góra University

Email: E.Feldsztein@ibem.uz.zgora.pl
Polônia, ul. prof. Z. Shafrana 4, Zielona Góra, 65-516

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Allerton Press, Inc., 2016