CHARACTERIZATION OF POLYPHOSPHATE GLASSES PREPARATION USING CRTA

We used CRTA for the study of both the elaboration and characterizatio n of several polyphosphate glasses. We show that controlled transforma tion rate thermal analysis is able to remove a systematic error presen t in classical thermal analysis, in the study of the precursor of the phosphate glass. We show too that in CRTA, water release in the phosph ate glasses can take place by diffusion phenomena at low temperature a nd that it is not due to the crystallization. These two examples illus trate some interests of this inverse method in the study of the decomp osition of inorganic compounds with water release.