As_2Se_3-X (X=S, Te, Tl) 系およびAs_2Se3-As_2S 系ガラスの弾性的性質

概要

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The elastic constants of As_2Se_3-X(X=S, Te, Tl) and As_2Se_3-As_2S_3 glasses have been determined by means of the ultrasonic interferometry technique. The data obtained for isotropic wave velocities, bulk modulus, shear modulus, Young's modulus, Poisson's ratio, Debye temperature are listed in Table II and Table III together with the density and thermal expansion coefficient. It can be seen that the values of isotropic wave velocity for As-Se glasses are lower than those for oxide glasses. The effect of the third component X(X=S, Te, Tl) on the elastic constants is shown in Fig. 2. Assuming that As_2Se_3-X glass is a composite of two phases, i.e., As_2Se_3 and X glassy phases, the experimental data for bulk modulus K_s can be roughly calculated from the formula of the type K_s=y_1K_1+y_2K_2 or 1/K_s= y_1/K_1+y_2/K_2 where K_1, K_2 and y_1, y_2 are the bulk modulus and the volume fraction of each phase, respectively.
社団法人日本材料学会の論文
1973-06-15