Structure characterization of calcium polyphosphate bioceramics during sintering process.
- Author:
Xiahong GAO
1
;
Linghong GUO
;
Hui LI
Author Information
1. Department of Chemical Engineering, Sichuan University, Chengdu 610065, China.
- Publication Type:Journal Article
- MeSH:
Biocompatible Materials;
Biodegradation, Environmental;
Bone Substitutes;
chemistry;
Calcium;
chemistry;
Humans;
Polyphosphates;
chemistry;
Stress, Mechanical
- From:
Journal of Biomedical Engineering
2004;21(6):991-994
- CountryChina
- Language:Chinese
-
Abstract:
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).
