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The roles of nano-SiO2 particles on the tribological behavior of short carbon fiber reinforced PEEK
被引:131
作者:
Zhang, G.
[1
]
Chang, L.
[1
]
Schlarb, A. K.
[1
]
机构:
[1] Univ Kaiserslautern, IVW, D-67663 Kaiserslautern, Germany
关键词:
Nanocomposite;
Short-fiber composite;
Polymer-matrix composites (PMCs);
Friction/wear;
POLYMER COMPOSITES;
MECHANICAL-PROPERTIES;
SLIDING FRICTION;
WEAR-RESISTANCE;
TRANSFER FILM;
PART II;
EPOXY;
NANOCOMPOSITES;
PERFORMANCE;
ENHANCEMENT;
D O I:
10.1016/j.compscitech.2009.01.023
中图分类号:
TB33 [复合材料];
学科分类号:
摘要:
In the present work, the roles of low-loading (1 vol.%) nano-SiO2 particles (13 nm) on the tribological behavior of short carbon fiber (SCF)/PTFE/graphite (micro-sized) filled PEEK were investigated. Tribological tests were carried out at room temperature in extremely wide pressure and sliding velocity ranges, i.e. from 1 MPa to 7 MPa and from 1 m/s to 2 m/s, respectively. Under all conditions studied, the nanopartilces remarkably reduce the friction coefficients. With respect to the wear rates, however, the roles of the nanoparticles show a strong dependence on the sliding conditions. Under 1 MPa, the abrasiveness exerted by possible nano-SiO2 agglomerates seems to accelerate SCIF destructions. Under pressures higher than 2 MPa, however, the nanoparticles remarkably reduce the wear rate. This effect is more pronounced under high pressures and especially at high sliding velocities. The protection of SCF/matrix interface by the nanoparticles is supposed to be the main reason for the enhancement of the wear resistance. (C) 2009 Elsevier Ltd. All rights reserved.
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页码:1029 / 1035
页数:7
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