Abstract
Semimetallic friction composites with and without bionic non-smooth structure were prepared and then tested to evaluate their friction wear properties. The variation of friction coefficients of the friction composites is relatively steady. The friction coefficients of the testing sample with bionic non-smooth structure of NO.2, NO.3 and NO.4 were lower than that without bionic structure. The wear rate of the friction composites greatly increased under a temperature increasing procedure, especially when the temperature exceeds 250°C. The wear rates of the testing samples of NO.2 and NO.3 are the lowest compared with others (NO.1 and NO.4) at various temperatures except for 100°C. The worn morphology of the friction composites after the friction testes was observed using the scanning electron microscope for analysing the worn characteristics. The results showed that the bionic structure of testing samples of NO.2 and NO.3 had better wear resistance and provide stable friction coefficient compared with others.
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