Effect of Calcining Temperature of Ceramic Powders Prepared from TEOS/Boehmite Sol-Gel on Tribological Behavior of Brake Lining Materials

Abstract:

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This study is to investigate tribological behavior of brake lining materials by hot pressing commercial friction powders with ceramic powders prepared by TEOS / boehmite sol-gel. The stoichiometric ratios of TEOS / boehmite sol-gel were kept constant but calcinated at different temperature to fabricate different homemade ceramic powders. The various phases of ceramic powders such as γ-Al2O3, δ-Al2O3, θ-Al2O3, α-Al2O3, cristobalite and mullite were formed during the preparation process starting from TEOS / boehmite sol-gel solution. The XRD observations reveal the final compositions of these homemade powders were strongly related to the calcining temperature. The brake lining specimens made from TEOS / boehmite sol-gel calcinated at higher temperature show better tribological performance. The brake lining specimen with α-Al2O3 and mullite which were transformed from TEOS / boehmite sol-gel calcinated at 1300°C shows the most stable friction coefficient and the lowest mass loss during wear tests.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

950-955

DOI:

10.4028/www.scientific.net/MSF.638-642.950

Citation:

K.J. Lee et al., "Effect of Calcining Temperature of Ceramic Powders Prepared from TEOS/Boehmite Sol-Gel on Tribological Behavior of Brake Lining Materials", Materials Science Forum, Vols. 638-642, pp. 950-955, 2010

Online since:

January 2010

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$35.00

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