Investigation of the Tribological Behaviour of Various AMC Surfaces against Brake Lining Material

被引:3
|
作者
Hirsch, Sarah Johanna [1 ]
Eiselt, Patrick [2 ]
Ozdemir, Ismail [1 ]
Grund, Thomas [1 ]
Nestler, Andreas [2 ]
Lampke, Thomas [1 ]
Schubert, Andreas [2 ]
机构
[1] Tech Univ Chemnitz, Inst Mat Sci & Engn, Mat & Surface Engn Grp, Erfenschlager Str 73, D-09125 Chemnitz, Germany
[2] Tech Univ Chemnitz, Inst Machine Tools & Prod Proc, Professorship Micromfg Technol, Reichenhainer Str 70, D-09126 Chemnitz, Germany
关键词
aluminium matrix composites; brake disc; facing; friction; surface engineering; tribology; wear; ALUMINUM-MATRIX COMPOSITES; WEAR BEHAVIOR; SLIDING WEAR; ROTOR;
D O I
10.3390/ma16031001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
AlSi7Mg/SiCp aluminium matrix composites (AMCs) with a high ceramic content (35 vol.%) that were produced by using the field-assisted sintering technique (FAST) were subjected to tribological preconditioning and evaluated as a potential lightweight material to substitute grey cast iron brake discs. However, since an uncontrolled running-in process of the AMC surface can lead to severe wear and thus to failure of the friction system, AMC surfaces cannot be used directly after finishing and have to be preconditioned. A defined generation of a tribologically conditioned surface (tribosurface) is necessary, as was the aim in this study. To simulate tribological conditions in automotive brake systems, the prepared AMC samples were tested in a pin-on-disc configuration against conventional brake lining material under dry sliding conditions. The influence of the surface topography generated by face turning using different indexable inserts and feeds or an additional plasma electrolytic treatment was investigated at varied test pressures and sliding distances. The results showed that the coefficient of friction remained nearly constant when the set pressure was reached, whereas the initial topography of the samples studied by SEM varied substantially. A novel approach based on analysing the material ratio determined by 3D surface measurement was developed in order to obtain quantitative findings for industrial application.
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页数:18
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