Dense Calcium Phosphate Bioceramics Sintered by Microwave Plasma
Two kinds of dense calcium phosphate (Ca-P) bioceramics, hydroxyapatite (HA) and β- tricalcium phoshpate/hydroxyapatite (β-TCP/HA), sintered by microwave plasma were investigated. The dense HA and β-TCP/HA bioceramics exhibited higher density, smaller grain size and higher Vickers hardness. The sintering behaviors of HA powder were also significantly different from those of calciumdeficient hydroxyapatite (d-HA) powder by the same microwave plasma sintering route. The sintering efficiency of the former was higher than that of the latter. The results indicate that dense HA and β-TCP/HA bioceramics are of better mechanical strength and might have better bioactivity.
Wei Pan and Jianghong Gong
J. G. Ji et al., "Dense Calcium Phosphate Bioceramics Sintered by Microwave Plasma", Key Engineering Materials, Vols. 368-372, pp. 1181-1183, 2008