ヨウ化銀系超イオン伝導ガラスの転移領域における粘性挙動と熱的性質

概要

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Differential scanning calorimetric measurements were performed for the superionic glasses in the systems AgI-Ag_2O M_xO_y(M_xO_y=B_2O_3, G_eO_2, P_2O_5, M_oO_3). Since the heat capacity change (A C_p) in glass transition was decreased with an increase in the Agl content in all of the systems, the fragility seemed superficially to be decreased with the Agl content from a viewpoint of ΔC_p. Transformation range Viscosities were also measured for the same glasses above by using a beam bending method. The fragility was not changed with an increase in the AgI content from a viewpoint of Eη/T_g, where Eη and T_g are respectively the activation energy for viscous flow and the glass transition temperature. It is thus concluded that only network part in the glass structure contributes to the value of ΔC_p and thus the decrease of ΔC_p with increasing AgI content is caused by the fact that the portion of the glass net work is decreased with increasing Agl content.
社団法人日本セラミックス協会の論文
1994-01-01