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Effect of SiO2 Particle Concentration on the Tribological Properties of PTFE Sealing Material

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Abstract:

Oil suspension was made with different concentrations of SiO2 particles.The effects of SiO2 with different concentrations on frictional pairs 45# -PTFE under different velocities is investigated on MRH-3 abrasion tester. The worn of PTFE surfaces was investigated by scanning electron microscopy (SEM).The results show that the friction coefficient increases with increasing SiO2 concentrations. The wear rate increases with the increasing particle concentration and then decreases a bit. Meanwhile the degree of wear increases with increasing particle concentrations. Furthermore, as shown in SEM micrographs, the main machenism of PTFE is furrowing wear.

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Periodical:

Advanced Materials Research (Volume 500)

Pages:

617-622

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.500.617

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Online since:

April 2012

Authors:

Yan Liang Zhang, Jun Zhou, Jian Xin Deng

Keywords:

Particle Concentration, Sealing, Wear

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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