KSTLE International Journal

Korean Tribology Society (한국트라이볼로지학회)
권호 표지

Frictional Instabilities of Polymer Composite Containing Barite or Potassium Titanate for Brake Linings

  • Kim, Seong-Jin (Department of Advanced Materials Engineering, Korea University) ;
  • Jang, Ho (Department of Advanced Materials Engineering, Korea University)
  • Published : 2003.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Tribological properties of novolac resin composites containing particulate barite (BaSO$_4$) or potassium titanate (K$_2$Oㆍ6(TiO$_2$))whiskers (two typical space fillers for commercial automotive brake linings) were investigated. The emphasis of the current investigation was given to the effect of the two fillers on the propensity of the stick-slip phenomena and formation of stable rubbing surface. A block-on-disk type tribometer was used for friction assessment. Results showed that the BaSO$_4$-filled composite produced large friction force oscillations at slow sliding speeds and created severe damage on the gray iron counter surface. On the other hand, the composite with $K_2$Oㆍ6(TiO$_2$) whiskers formed a stable rubbing surface and showed smooth sliding behavior without large friction force fluctuation. The microscopic observation of the rubbing surface revealed that the $K_2$Oㆍ6(TiO$_2$)whiskers played a key role in the formation of stable rubbing surface and smooth sliding behavior by effectively reinforcing the resin.

Keywords

References

  1. F.P. Bowden and D. Tabor, The Friction and Lubrication of Solids, Oxford Univ. Press, London, 1964
  2. B. Bhushan, Principles and Applications of Tribology, John Wiley & Sons, New York, 1999
  3. E. Rabinowicz, Friction and Wear of Materials, John Wiley & Sons, New York, 1995
  4. C. Gao and D. Kuhlmann-Wilsdorf, On Stick-Slip and the Velocity Dependence of Friction at Low Speeds, Trans. ASME J. Tribo., Vol. 112, pp. 354-360, 1990
  5. B. Feeny, A. Guran, N. Hinrichs and K. Popp, A Historical Review on Dry Friction and Stick-Slip Phenomena, Appl. Mech. Rev., Vol. 51, pp. 321-341, 1998 https://doi.org/10.1115/1.3099008
  6. M.H. Cho, E.G. Bae, H. Jang, G. Jeong, D. Kim and C. Choi, The Role of Raw Material Ingredients of Brake Linings on the Formation of Transfer Film and Friction Characteristics, SAE Tech. Paper, 2001-01-3130, pp. 49-54, 2001
  7. H. Jang, J.S. Lee and J.W. Fash, Compositional Effects of the Brake Friction Material on Creep Groan Phenomena, Wear, Vol.251, pp. 1477-1483, 2001 https://doi.org/10.1016/S0043-1648(01)00786-4
  8. J. Brecht, W. Hoffricchter and A. Dohle, Mechanisms of Brake Creep Groan, SAE Tech. Paper, 973026, pp. 79-85, 1997
  9. H. Jang and S.J. Kim, The Effect of Antimony Trisulfide (Sb_2S_3) and Zirconium Silicate (ZrSiO_4) in the Automotive Brake Friction Material on Friction Characteristics, Wear, Vol. 239, pp. 229-236, 2000 https://doi.org/10.1016/S0043-1648(00)00314-8
  10. H. Jang, J.J. Lee, S.J. Kim and K.Y. Jung, The Effect of Solid Lubricants on Friction Characteristics, SAE Tech. Paper, 982235, pp. 1-8, 1998
  11. S.J. Kim, M.H. Cho, D.-S. Lim and H. Jang, Synergistic Effects of Aramid Pulp and Potassium Titanate Whiskers in the Automotive Friction Material, Wear, Vol. 251, pp. 1484-1491, 2001 https://doi.org/10.1016/S0043-1648(01)00802-X
  12. S.J. Kim, K.S. Kim and H. Jang, Optimization of Manufacturing Parameters for a Brake Lining Using Taguchi Method, J. Mater. Process. Tech., Vol. 136, pp. 202-208, 2003 https://doi.org/10.1016/S0924-0136(03)00159-6
  13. S.J. Kim and H. Jang, Friction and Wear of Friction Materials Containing Two Different Phenolic Resins Reinforced with Aramid Pulp, Tribo. Int., Vol. 33, pp. 477-484, 2000 https://doi.org/10.1016/S0301-679X(00)00087-6
  14. Y. Handa and T. Kato, Effects of Cu Powder, $BaSO_4$, and Cashew Dust on the Wear and Friction Characteristics of Automotive Brake Pads, Tribo. Trans., Vol. 39, pp. 346-353, 1996 https://doi.org/10.1080/10402009608983537