The glass formation regions of the seven Aluminofluoropho sphate ternary systems [R

1

(PO

3

)

2

-AlF

3

-R

2

F

2

(R

1

: Mg、Sr; R

2

: Zn、Cd、Pb)and Mg(H

2

PO

4

)

2

-AlF

3

-ZnF

2

etc

]have been studied. FT-IR

Raman

XRD

DTA and ESCA techniques are used to investigate the fundamental properties

structure and crystalli-sation mechanism of Mg(PO

3

)

2

-AlF

3

-PbF

2

systems. A new for-mula used to calculate the activation energy and the Avrami exponent is derived.