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http://dx.doi.org/10.4150/KPMI.2018.25.6.501

Development of Novel Composite Powder Friction Modifier for Improving Wheel-rail Adhesion in High-speed Train  

Oh, Min Chul (Department of Materials Science and Engineering, Ajou University)
Ahn, Byungmin (Department of Materials Science and Engineering, Ajou University)
Publication Information
Journal of Powder Materials / v.25, no.6, 2018 , pp. 501-506 More about this Journal
Abstract
With the recent remarkable improvements in the average speeds of contemporary trains, a necessity has arisen for the development of new friction modifiers to improve adhesion characteristics at the wheel-rail interface. The friction modifier must be designed to reduce slippage or sliding of the trains' wheels on the rails under conditions of rapid acceleration or braking without excessive rolling contact wear. In this study, a novel composite material consisting of metal, ceramic, and polymer is proposed as a friction modifier to improve adhesion between wheels and rails. A blend of Al-6Cu-0.5Mg metallic powder, $Al_2O_3$ ceramic powder, and Bakelite-based polymer in various weight-fractions is hot-pressed at $150^{\circ}C$ to form a bulk composite material. Variation in the adhesion coefficient is evaluated using a high-speed wheel-rail friction tester, with and without application of the composite friction modifier, under both dry and wet conditions. The effect of varying the weighting fractions of metal and ceramic friction powders is detailed in the paper.
Keywords
Adhesion coefficient; Friction modifier; Composites materials; Powder technology; Hot pressing;
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  • Reference
1 M. S. Kim, K. H. Kim and S. J. Kwon: J. Korean Soc. Precis. Eng., 32 (2015) 603.   DOI
2 G. D. Kim, H. Y. Lee, T. K. Ahn, J. S. Hong, S. Y. Han and K. Y. Jeon: J. Korean Soc. Railway, 6 (2003) 257.
3 G. D. Kim, Y. J. Han, H. J. Park, S. Y. Lee and K. H. Han: Trans. Korean Inst. Power Electron., 6 (2001) 299.
4 T. H. Lim, S. S. Kim, J. J. Choi, B. R. Lee and S. Y. Yang: J. Korean Soc. Precis. Eng., 24 (2007) 56.
5 G. C. Jun, D. H. Hwang and D. E. Kim: Tribol. Lubr., 13 (1997) 68.
6 R. M. German: J. Korean Powder Metall. Inst., 20 (2013) 85.   DOI
7 H. K. Kim, K. T. Yang and H. J. Kim: J. Korean Soc. Saf., 22 (2007) 8.
8 W. Wang, H. F. Zhang, Q. Y. Liu, M. H. Zhu and X. S. Jin: Proc. IMechE Part J: J. Engineering Tribology, 230 (2016) 611.   DOI
9 W. S. E. Solyman, H. M. Nagiub, M. A. Alian, N. O. Shaker and U. F. Kandil: J. Radiat. Res. Appl. Sci., 10 (2017) 72.   DOI