KSTLE International Journal

한국트라이볼로지학회 (Korean Tribology Society)
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)
  • 발행 : 2003.12.01
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초록

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.

키워드

참고문헌

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