Room temperature elastic properties of ternary zinc magnesium chloro phosphate by pulse echo ultrasonic technique / Siti Nurulaien Abd Samat.

The study of glasses in ternary zinc magnesium chloro phosphate- (MgCl)x(ZnO)0.2(P2O5)0.8-X system will be carried out at room temperature. In the addition of magnesium chloride (MgCl) to the system it will modified the glass properties in his work the ion magnesium chloride for x=0.1, 0.2 and 0.3 will be doped to the glass system and this will be synthesized by melt quenching technique. The structure of non-crystalline glass will be determined by XRD. Ultrasonic velocity measurements for longitudinal wave velocity and shear wave velocity will be carried out at room temperature with 4Mhz frequency. Then, trough this elastic property it can be used to determine Longitudinal Modulus, Shear Modulus, Bulk Modulus, Young's Modulus, Debye Temperature, micro hardness and Poisson's ratio of the glass sample. Results from the study show that the density of all glass was decrease from 2822 to 2685 kg/m3 and molar volumes decrease from 0.004331 to 0.003917 m3 /mol. Both the longitudinal and shear wave velocity decreased with increase of MgCl composition. The experimental results indicated that the elastic constant was depending upon the composition of the glass.