China Plastics ›› 2022, Vol. 36 ›› Issue (6): 60-68.DOI: 10.19491/j.issn.1001-9278.2022.06.010

• Materials and Properties • Previous Articles     Next Articles

Preparation and performance evaluation of tantalum boride⁃reinforced polyether ether ketone composite coatings

HUANG Suyuan, CAO Lin, LI Wei, LIN Zhidan(), ZHANG Peng()   

  1. Institute of Advances Wear & Corrosion Resistant and Functional Materials,Jinan University,Guangzhou 510632,China
  • Received:2022-01-25 Online:2022-06-26 Published:2022-06-27

Abstract:

PEEK/TaB2 composite coatings were deposited on the surface of pure titanium substrates using a cathodic electrodeposition technique. Transmission electron microscopy, scanning electron microscopy, X?ray diffractometer, and friction and wear tester were used to characterize the suspension dispersion, surface morphology, microstructure, crystallinity, and tribological and biological properties of the composite coatings. The results indicated that there were a uniform morphology and a certain thickness for the composite coatings through adjusting the electrodeposition parameters. After thermal sintering at 390 ℃, the resulting coating became uniform and dense. Thermal sintering improved the crystalline properties of the PEEK/TaB2 composite coatings, and the addition of TaB2 particles led to a higher crystalline degree for the composite coatings. When a lower content of TaB2 particles was added, the composite coatings showed good tribological properties in a medium of fetal bovine serum. Their wear rates decreased by 48.1 %and 69.1 %compared to the pure PEEK coating. However, there was an evident aggregation of TaB2 particles at an excessive loading in the PEEK matrix, resulting in an increase in friction coefficient and wear rate. Cell experimental results indicated that TaB2 had a good bioactivity to promote cell proliferation on the sample surface.

Key words: electrodeposition, polyetheretherketone, tantalum boride, tribology

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