Obtention et etudes des verres refractaires a base d'alumine et de sesquioxyde de neodyme

Abstract The amorphous phase obtained by rapid quenching with an hammer-anvil device of solar furnace melted binary mixture (1−x)Al 2 O 3 -xNd 2 O 3 was investigated by thermal analysis and optical methods. By this way the domain of this amorphous phase obtention is determined. It is concluded that the amorphous phase is indeed a glass exhibiting no short range order which recristallizes circa 900°C in the two equilibrium phases βAl 2 O 3 and NdAlO 3 .