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Effect Of Stand-Off Distance On Structure And Mechanical Properties Of Hydroxyapatite Coatings Plasma-Sprayed Onto Carbon/Carbon Composites

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  • JIN-LING SUI

    (Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing 102617, P. R. China)

  • WU BO

    (Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing 102617, P. R. China)

  • ZHOU HAI

    (Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing 102617, P. R. China)

  • NING CAO

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, P. R. China)

  • MU-SEN LI

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, P. R. China)

Abstract

Plasma-spraying parameters are of crucial importance to the fabrication of high-quality hydroxyapatite (HA) coating for biomedical use. In this paper, hydroxyapaptite was coated onto carbon fiber reinforced carbon composites (C/Ccomposites) by a plasma spraying method. The effect of stand-off distances on the microstructure, phase composition and shear strength of hydroxyapatite coatings was studied. X-ray diffraction (XRD) was used to characterize the phase composition and scanning electron microscopy (SEM) examined the morphology of the sprayed surface and polished cross-sections. The shear strength of the HA coatings–C/Csubstrates was detected on a RGD-5 electric tension machine. The interface of the HA coating–C/Ccomposites was also detected. Results showed that the extent of melting of particles increased with increasing stand-off distances, while the crystallinity of the HA decreased at a power level of 30 kW. Mechanical bonding plays a dominant role at the interface of the rough substrate and the deformed HA particles.

Suggested Citation

  • Jin-Ling Sui & Wu Bo & Zhou Hai & Ning Cao & Mu-Sen Li, 2007. "Effect Of Stand-Off Distance On Structure And Mechanical Properties Of Hydroxyapatite Coatings Plasma-Sprayed Onto Carbon/Carbon Composites," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(03), pages 371-376.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:03:n:s0218625x07009633
    DOI: 10.1142/S0218625X07009633
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