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Functionalization of alumina particles to improve the performance of eco-friendly brake-pads

friction 2021年第5期9卷 1213-1226页

作者： Vanvirsinh CHAUHAN Jayashree BIJWE Ashish DARPE Centre for Automotive Research and Tribology(formerly ITMMEC) Indian Institute of Technology DelhiHauz-KhasNew Delhi-110016India Mechanical Engineering Department Indian Institute of Technology DelhiHauz-KhasNew Delhi-110016India

Abrasives,such as oxides of alumina(Al),silica(Si),zirconia(Zr),chromium(Cr)etc.,are added to raise the friction level and also to remove the glaze on the disc so that surface will be rejuvenated continuously during braking and will contribute to maintain the desired friction ***,these inorganic particles have less adhesion with the resin/binder and hence are easily dug out during wearing process contributing to higher *** efforts are made to enhance the filler‐matrix adhesion,not only the wear of friction material(FM)should reduce,the particles may stay for a longer time on the tribo‐surface of the pads to contribute fully towards controlling the coefficient of friction(μ).In the present study,alumina particles were selected for siloxane treatment to improve the filler‐matrix *** types of eco‐friendly(free from asbestos and Cu)brake‐pads were developed using alumina as a theme ingredient(treated and untreated)keeping all the parent formulation *** additional type of brake‐pads without alumina particles was also developed to observe the effect of abrasive particles on the tribo‐*** performance properties(physical,mechanical,and tribological)of brake‐pads were compared when evaluated in identical *** tribotesting was done on full‐scale brake inertia dynamometer following the procedure in Japanese automobile standard(JASO C 406).It was observed that siloxane treatment affected both friction and wear of brake‐pads in a beneficial *** resistance got increased 35%for siloxane treated *** surfaces were analysed using scanning electron microscopy(SEM)and energy dispersive X‐ray(EDAX)technique.

关键词： friction materials brake‐pads siloxane treatment friction modifiers inertia brake‐dynamometer

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