Properties of phosphate glasses containing transition metals oxides

Amamoto, Ippei; Myochin, Munetaka; Yano, Tetsuji*; Akagi, Naoto*; Segawa, Hiroyo*; Shibata, Shuichi*

Phosphate glasses have received much attention for the development of new low-melting glasses with low environmental load. However, their low chemical durability prevents their application for practical use. Recently, the addition of FeO was found to improve their chemical durability. Due to their high durability and high capacity of solution of dopants, iron phosphate glass system has been suggested to be utilized as new materials. In this work, the effect of the addition of other transition metal oxides on the properties of iron phosphate glass was investigated. In addition, the pseudo fission products as nuclear waste was added and their glass formation and chemical durability were investigated. All the glass batches formed homogenous melts at 1250 in the centigrade scale and vitrified without crystallization by pouring on the carbon plate. It was found that the substitution of a part of FeO by MnO or CoO did not cause large changes in the thermal properties.