Phase transformation behavior of spherical tricalcium phosphate micro-granules prepared by a jet wheel impact atomization and calcination process

•Spherical TCP micro-granules were prepared using an atomization and calcination process.•TCP micro-granules showed a significant phase transformation according to the calcination temperature.•TCP micro-granules were controlled a density and microporosity by phase transformation.

Spherical tricalcium phosphate (TCP) micro-granules were prepared using a jet wheel impact atomization and calcination process. Spherical TCP granules were obtained which can exhibit phase transformation between the alpha and beta polymorphs as a function of the heating temperature. The progressive changes in the phosphate group of TCP granules were attributed to the phase transformation. Consequently, such structural changes in the TCP micro-granules can be used to control the dissolution and degradation of TCP through the controlled density and microporosity of the micro-granules.

Graphical abstractThe TCP micro-granules showed a significant phase transformation, control of density and microporosity according to the relative content of α- and β-phases in the granules and the calcination temperature.Figure optionsDownload full-size imageDownload as PowerPoint slide