[Structure characterization of calcium polyphosphate bioceramics during sintering process].
Calcium polyphosphate (CPP) may be a promising bone substitute with controllably-degraded ability. In this investigation, the effects of sintering temperatures on its phase transformation and structure parameters, such as crystalline size distribution and micro-strain were investigated by X-ray diffraction (XRD). The phase composition was calculated with reference intensity ratio (RIR). The crystalline size distribution and micro-strain were calculated with Warren-Averbach Fourier transfer (W-A/FT) method. The results demonstrated that at the temperature of 585 degrees C-900 degrees C, the phase transformation of amorphous CPP into crystalline gamma-CPP and then into beta-CPP occurred,and the course of such transformation was accompanied with the significant change of the mean crystalline size (D) and the mean micro-strain (epsilon).
Gao
Xiahong
X
Department of Chemical Engineering, Sichuan University, Chengdu 610065, China.
Guo
Linghong
L
Li
Hui
H
D001672:Biocompatible Materials; D001673:Biodegradation, Environmental; D018786:Bone Substitutes / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry*; D006801:Humans; D011122:Polyphosphates / Q000737:chemistry*; D013314:Stress, Mechanical
D001672:Biocompatible Materials; D018786:Bone Substitutes; D011122:Polyphosphates; D002118:Calcium