Volume 17 No. 3
Apr.  2015
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Citation:

Shock-Activating and Sintering of Hydroxyapatite Agglomerate

  • Corresponding author: LIAO Qi-Long; 
  • Received Date: 2002-12-25
    Accepted Date: 2003-04-12
  • Hydroxyapatite (HA) is an effective material used in bone prostheses. The activating and sintering characteristics of hydroxyapatite agglomerate treated by shock wave were studied. Using XRD and SEM the grain size refinement, homogenization and lattice deformation were observed in shocked HA powders, which can promote sintering of HA ceramics. The extra energy stored in shocked powders will be released during sintering process. The temperature of maximum shrink rate of shocked sample is about 70 lower than that of unshocked one. The strength and density of HA ceramics from the shocked sample can be enhanced. HA ceramics with high strength used for artificial bone materials can be made with the shock-activating method.
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  • [1] Hench L L. Bioceramics [J]. J Am Cera Soc, 1998, 81(7): 1705-1728.
    [2] Jarcho M. Calcium Phosphate Ceramics as Hard Tissue Prosthetics [J]. Clinic Orthop, 1981, 157: 259-267.
    [3] Batsanov S S. Effects of Explosion on Materials: Modification and Synthesis under High Pressure Shock Compression [M]. New York: Spring-Verlag, 1994.
    [4] Bergman O R, Barrington J. Effect of Explosive Shock Wave on Ceramics Powders [J]. J Am Cera Soc, 1996, 49(8): 502-507.
    [5] Yang S Y, Jin X G, Dong Y B. Grain Size Refinement and Homogenization of Multicomponent Powders by Shock Treatment [J]. Chinese Journal of High Pressure Physics, 2001, 15(1): 48-53. (in Chinese)
    [6] 杨世源, 金孝刚, 董玉斌. 冲击波作用下多组分粉体的细化与均化研究 [J]. 高压物理学报, 2001, 15(1): 48-53.
    [7] Lu F Y, Cai Q Y, Zhou X G, et al. Studies of Shock-Activation of Silicon Nitride Powders [J]. Chinese Journal of High Pressure Physics, 1999, 13(2): 115-119. (in Chinese)
    [8] 卢芳云, 蔡清裕, 周新贵, 等. 氮化硅粉末的冲击波活化研究 [J]. 高压物理学报, 1999, 13(2): 115-119.
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Shock-Activating and Sintering of Hydroxyapatite Agglomerate

    Corresponding author: LIAO Qi-Long; 
  • 1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621002, China;
  • 2. Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China;
  • 3. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China

Abstract: Hydroxyapatite (HA) is an effective material used in bone prostheses. The activating and sintering characteristics of hydroxyapatite agglomerate treated by shock wave were studied. Using XRD and SEM the grain size refinement, homogenization and lattice deformation were observed in shocked HA powders, which can promote sintering of HA ceramics. The extra energy stored in shocked powders will be released during sintering process. The temperature of maximum shrink rate of shocked sample is about 70 lower than that of unshocked one. The strength and density of HA ceramics from the shocked sample can be enhanced. HA ceramics with high strength used for artificial bone materials can be made with the shock-activating method.

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