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| Study on the Tribological Properties of Polyetheretherketone Composites Reinforced by ZrO2 Particles and Short Carbon Fibers under Water Lubrication |
| ZHONG Yingjie, XIE Guangyou, SUN Zhaosong, SUI Guoxin |
| Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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Cite this article:
ZHONG Yingjie XIE Guangyou SUN Zhaosong SUI Guoxin. Study on the Tribological Properties of Polyetheretherketone Composites Reinforced by ZrO2 Particles and Short Carbon Fibers under Water Lubrication. Chin J Mater Res, 2010, 24(6): 625-630.
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Abstract PEEK matrix composites filled with short carbon fibers (CF) and ZrO2 particles were compounded using a twin-screw extruder followed by injection molding. The tribological properties of the
PEEK/CF/ZrO2 composites under the water lubrication were systematically studied. It was revealed that the hybrid composites exhibit excellent wear-resistance in the water conditions. The friction coefficients of the composites slightly changed with increasing of the applied load, while the wear rates of the hybrid composites decreased with increasing applied load. Main wear mechanism of the composites in water was mild abrasive wear and fatigue wear. The high wear resistance of the composites should be attributed to the existence of the carbon fibers: the carbon fibers carried the main load between the contact surfaces and protected the soft polymer matrix from further severe impact and abrasion of the counterpart. The incorporation of the ZrO2 particles could effectively inhibit the carbon fiber failure and debonding, which resulted in a better wear resistance property of the hybrid PEEK composites compared with sole CF reinforced PEEK composites. However, high loading of the particles would also aggravate the fatigue wear of the composites and lead to a deterioration of the wear resistance of the composites.
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Received: 18 May 2010
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