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Tribological assessment of rice husk ash in eco-friendly brake friction materials

2022; Elsevier BV; Volume: 516-517; Linguagem: Inglês

10.1016/j.wear.2022.204613

1873-2577

Gustavo da Silva Gehlen, Ana Paula Gomes Nogueira, Davide Carlevaris, L.Y. Barros, Jean Carlos Poletto, Germano Lasch, Giovanni Straffelini, Ney Francisco Ferreira, Patric Daniel Neis,

Vehicle Dynamics and Control Systems

The tribological behavior of new green friction materials with rice husk (RH) and rice husk ash (RHA) is discussed in the current paper. Two formulations developed, one with 6% RH and one with 6% RHA, were compared with a reference formulation with alumina under the AK Master test, through a braking tribometer. Formulation with RHA showed tribological performance equal to or better than the reference material, especially in high temperature applications where the RHA particles assisted in the building of the contact plateaus. Adding RH reduced the abrasive action of the composite, allowing the formation of a more homogeneous tribofilm on the disc than in the other formulations.