Selective transfer phenomenon in lubricated sliding surfaces with copper and its alloy coatings made by electro-pulse spraying

被引：27

作者：

Padgurskas, J

Snitka, V

Jankauskas, V

Andriusis, A

机构：

[1] Lithuanian Univ Agr, Dept Mech Engn, LT-53356 Akademija, Kauno R, Lithuania

[2] Kaunas Univ Technol, Res Ctr Microsyst & Nanotechnol, LT-51369 Kaunas, Lithuania

来源：

WEAR | 2006年 / 260卷 / 06期

关键词：

selective transfer; electro-pulse spraying; metal-film; friction;

D O I：

10.1016/j.wear.2005.03.033

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The decrease of the coefficient of friction and wear are characteristics of the selective transfer phenomenon caused by the self-formation of a non-oxidising metal film in the friction zone. In this paper, the possibility of providing the selective transfer phenomenon by electro-pulse spraying (EPS) will be discussed. The analysed copper and brass coatings were manufactured by an electric pulse at 5 kV and an energy density of about 4.7-5 MJ/kg. EPS manufactured coatings have a fine-grained, multi-layer structure with a small share of voids and non-metal inclusions. The analysis (tribological test, microscopy) of such conditioned friction pairings has shown that a protecting metal film will be formed by itself, even at marginal lubricated test conditions. As a consequence, a low coefficient of friction (f = 0.003-0.004) occurs in the contact zone, which is similar to those, which indicate viscous friction. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：652 / 661

页数：10