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Effect of Surface Roughness and Sliding Velocity on Tribological Properties of an Oxide-Coated Aluminum Alloy
Technical Paper
2014-01-0957
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Aluminum engines have been successfully used to replace heavy gray cast engines to lighten the car's weight and reduce the fuel consumption. To overcome the aluminum alloys' poor wear resistance, cast iron liners and thermal spraying coatings were used as cylinder bore materials for wear protection. A plasma electrolytic oxidation (PEO) technique had also been proposed to produce an oxide coating on aluminum cylinder bore. The oxide coating can have a low coefficient of friction (COF) and minimum wear shown in the lab tests. To conserve more fuel, the stopping and restarting system was introduced when the vehicle was forced to stop immediately for a short time. When the engine was forced to stop and restart, the reciprocating speed of the piston was very slow, and the friction between the piston and the cylinder was high. In this research, a pin-on-disc tribometer was used to investigate tribological behavior of the oxide coating on an aluminum alloy. The rotational velocity of the tribometer was increased stepwise in a low speed range during the tests. The COF and wear of counterface pins were measured and evaluated corresponding to different combinations of sliding velocities. The results showed that the COF could be affected by many factors such as coating composition, surface roughness, amount of lubricating oil and sliding velocity. With the increase of velocity in the low speed range, the COF decreased. The smoother of the coating surface, the less wear of counterface pin. A proper combination of coating surface roughness and sliding velocity could provide a significant lower COF and less wear.
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Citation
Wang, G. and Nie, X., "Effect of Surface Roughness and Sliding Velocity on Tribological Properties of an Oxide-Coated Aluminum Alloy," SAE Technical Paper 2014-01-0957, 2014, https://doi.org/10.4271/2014-01-0957.Also In
References
- Nie X. , Wang L. , Konca E. , Alpas A.T. Surface & CoatingsTechnology 188 189 207 213 2004
- Su J.F. , Nie X. , and Hu H. , Tjong J. Friction and counterface wear influenced by surface profiles of plasma electrolytic oxidation coatings on an aluminum A356 alloy Vacuum Science and Technology A 30 061302 11 2012
- Sarkar A. D. Friction and Wear Academic London 1980 10.1016/0043-1648(80)90120-9
- Zhang P. , Nie X. , Henry H. , and Zhang J. Surface &Coatings Technology 205 1689 2010 10.1166/jnn.2010.1668
- Tian S.F. , Jiang L.T. , Guo Q. , Wu G.H. Effect of surface roughness on tribological properties of TiB2/Al composites Materials and Design 53 129 136 2014 10.1016/j.matdes.2013.02.074
- Bayer R , Sirico J The influence of surface roughness on wear Wear 35 251 60 1975 10.1016/0043-1648(75)90074-5
- Wang A , Rack H Dry sliding wear in 2124 Al-SiCw/17-4 PH stainless steel systems Wear 147 355 74 1991
- Natarajan S , Narayanasamy R , Babu SPK , Dinesh G et al Sliding wear behaviour of Al6063/TiB2 in situ composites at elevated temperatures Mater Des 30 2521 31 2009
- Nie X. , Wilson A. , Leyland A. , Matthews A. Surface &Coatings Technology 121 506 2000
- Martina J. , Melhema A. , Shchedrinaa I. , Duchanoya T. et al Effects of electrical parameters on plasma electrolytic oxidation of aluminium Surface & Coatings Technology 221 70 76 2013 10.1016/j.surfcoat.2013.01.029
- Nie X. , Wang L. , Yao Z.C. , Zhang L. et al Sliding wear behaviour of electrolytic plasma nitrided cast iron and steel Surface & Coatings Technology 200 1745 1750 2005 10.1016/j.surfcoat.2005.08.046
- Hussein R.O. , Zhang P. , Nie X. , Xia Y. et al The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62 Surface & Coatings Technology 206 1990 1997 2001 10.1016/j.surfcoat.2011.08.060
- Dunham Bob October 1974 Automatic on/off switch gives 10-percent gas saving Popular Science 170