Study on influence of alumina nanoparticles on automotive brake friction materials Online publication date: Thu, 09-Nov-2023
by Liping Ma; Yanping Zhao
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 16, No. 6, 2023
Abstract: In this paper, the changes of porosity, density, hardness, wear rate, impact strength and compression ratio of resin matrix friction materials when alumina nanoparticles are 2%, 4%, 6%, 8% and 10% of the mass of resin matrix friction materials are studied. With the help of SEM, the surface appearance is observed, and the Rockwell hardness tester, fixed speed friction testing machine, and simple support beam impact testing machine are used to complete the test. The results show that with the increase of alumina nanoparticle content, the porosity, density, hardness and impact resistance of friction materials are improved, and the compression ratio is reduced. The wear rate of friction materials increases during the increase of friction temperature, but under the condition of a maximum friction temperature of 350°C, resin-based friction materials with alumina nanoparticle content of 6% have the lowest wear rate.
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