Characterization and evolution of the coefficient of friction during pin on disc tribotest: Comparison between C10200 Cu, AA6082-T6 Al and C36000 brass pins under varying normal loads

被引：16

作者：

Ferreira, R. O. ^{[1
,2
]}

Galvani, G. B. ^{[1
]}

Tertuliano, I. S. ^{[2
]}

Rodrigues, A. C. P. ^{[1
]}

Azevedo, C. R. F. ^{[1
]}

机构：

[1] Univ Sao Paulo, Polytech Sch, Dept Met & Mat Engn, Av Prof Mello Moraes 2463, BR-05508030 Sao Paulo, SP, Brazil

[2] Univ Sao Paulo, Polytech Sch, Dept Mech Engn, Surface Phenomena Lab, Av Prof Mello Moraes 2231, BR-05508900 Sao Paulo, SP, Brazil

来源：

TRIBOLOGY INTERNATIONAL | 2019年 / 138卷

关键词：

Sliding friction; Sliding wear; Surface analysis; Electron microscopy; Transfer-layers composition; SURFACE-COMPOSITION; TRIBOFILM FORMATION; LAYER FORMATION; MILD WEAR; 3RD BODY; PARTICLES; BEHAVIOR; DEFORMATION; MECHANISMS; TRANSITION;

D O I：

10.1016/j.triboint.2019.06.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Cu, leaded alpha+beta brass and Al-alloy pins were pin-on-disc (PoD) tested against steel discs using sliding speed of 0.1 m/s and contact pressures from 0.51 to 2.55 MPa. Cu/steel tribopair showed unstable coefficient of friction (CoF) evolution around 0.6, while Al/steel and brass/steel tribopairs featured stable CoF evolution, around 0.42 and 0.30 respectively. The tribosurfaces of the discs and pins were characterized by laser interferometry and microscopy. Cu/steel and Al-alloy/steel tribopairs presented oxide transfer films, but intense adhesion of Cu on the discs produced unstable CoF evolution of the Cu/steel tribopair. Conversely, intense leaded-brass adhesion promoted the lowest and more stable CoF evolution of the brass/steel tribopair.

引用

页码：403 / 414

页数：12

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