Tribological Behavior of PPS Composite with Different Counterpart Materials in Antifreeze
Polyphenylene sulfide composite materials reinforced with short cut carbon fiber were prepared by hot em-bossing.Tribological behaviors of the composites against 4Cr13,SiC and Al2O3 counterparts in the automotive antifreeze un-der different loads were studied.The wettability and corrosion resistance of the friction pairs in the automotive antifreeze were compared.The worn surfaces of the composites and the counterparts were observed with laser confocal microscopy and scanning electron microscopy.The friction and wear mechanism of the composites was investigated by EDS and XRD analy-sis.The results show that the SiC counterpart demonstrates the best anti-corrosion ability and the Al2O3 counterpart has the best wettability.When paired with 4Cr13,the wear rate of the composite is the lowest under the same loads,but the friction coefficient has the fastest growing with load increasing,and the counterpart has the highest wear rate and severe abrasive wear.When paired with SiC or Al2O3,the wom surface of the composite exhibits typical grinding characteristics.Under the same loads,the wear rate of the composite is the highest and the wear debris deposits on the counterpart surface when paired with Al2O3,while the friction coefficient of the composite is the lowest and the counterpart has the lowest wear rate when paired with SiC.It can be concluded that the combination of PPS composite materials and SiC is a suitable friction pair for long service life sliding bearing in antifreeze.
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