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

被引：4

作者：

Feldshtein, E. E. ^{[1
]}

Devojno, O. G. ^{[2
]}

Kardapolava, M. A. ^{[2
]}

Lutsko, N. I. ^{[2
]}

Zurek, D. ^{[1
]}

Michalski, M. ^{[1
]}

机构：

[1] Zielona Gora Univ, Ul Prof Z Shafrana 4, PL-65516 Zielona Gora, Poland

[2] Belarusian Natl Tech Univ, Pr Nezavisimosti 65, Minsk 220013, BELARUS

来源：

JOURNAL OF FRICTION AND WEAR | 2016年 / 37卷 / 05期

关键词：

laser cladding; composite coating; nickel alloy; bronze; coefficient of friction; wear rate; WEAR BEHAVIOR;

D O I：

10.3103/S1068366616050056

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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 45A degrees. 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.

引用

页码：454 / 461

页数：8

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