Abstract: Glass powder of Si-Al-Ca-P-F-system,which was heat-treated under 673,773,873,973,1 073 and 1 173 K respectively,was prepared by liquid precipitation method,Influence rules of heat-treatment on crystallized state,glass change and precipitation behavior,micromorphology,microstructure of the powder were researched by XRD,DSC,TEM,FT-IR and other test methods.The results show that the hollow nano powder reunites and collapses obviously at 673K,and it appeares the same amorphous as the raw powder at 773 K.The par...

Key words: liquid precipitation; Si-Al-Ca-P-F-glass; fine powder; heat-treatment;