The activation of hydroxyapatite (HA) powder treated by shock wave was analyzed and the dissoluble properties of two kinds of ceramics made from the shocked- and unshocked-treatment HA powders were compared in this paper. The grain size refinement, homogenization and dislocation of lattice in shocked HA powders analyzed by XRD and SEM can promote sintering of HA ceramics, which can obviously enhance the strength of HA ceramics. Weight changes of HA powders from the shocked HA powders after immersing in simulated body fluid (SBF) were smaller, Ca2+ concentrations and pH values changes of SBF are also smaller than those of HA ceramics from the unshocked HA powders. The HA ceramics from the shocked HA powders were more stable in the SBF.
Journal of Functional Materials
Scanning electron microscopy
X ray diffraction analysis