Journal of Inorganic Materials ›› 2010, Vol. 25 ›› Issue (4): 349-353.DOI: 10.3724/SP.J.1077.2010.00349

• Research Paper • Previous Articles     Next Articles

Wear Particles of Carbon/Carbon Composite Artificial Hip Joints

ZHANG Lei-Lei1, HU Tao1,2, LI He-Jun1, LU Jin-Hua1, SHEN Xue-Tao1, CAO Wei-Feng1, WANG Bin1   

  1. 1. School of Materials Science, Northwestern Polytechnical University, Xi’an 710072, China; 2. Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
  • Received:2009-08-10 Revised:2009-10-15 Published:2010-04-20 Online:2010-04-27

Abstract:

The carbon/carbon composite wear particles generated from a hip joint simulator were separated. The size, morphology and thickness of the particles were tested by laser particle size analyzer, scanning electron microscope and 3-D profiler, respectively. The results show that the particles are 0.3-93.9μm in size and the morphology and the thickness of the particles distributes regularly according to their sizes. The particles whose sizes are larger than 30μm are carbon fibers with a constant thickness. The particles whose thicknesses are in a broad range with medium size (3-30μm) show irregular morphology and complex boundary. The particles whose thicknesses are in the range of submicrometers are less than 3μm in size and have a spherical or circular shape. Based on the experimental results, the evolvement of the wear particles in the wear process is explained.

Key words: carbon/carbon composites, wear particles, prosthesis, artificial hip joint

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