Department of Applied Physics, Amity School of Engineering and Technology, Bijwasan, New Delhi-110 061, India
Adv. Mater. Lett., 2011, 2 (2), pp 157-162
DOI: 10.5185/amlett.2010.12190
Publication Date (Web): Apr 08, 2012
Copyright © IAAM-VBRI Press
E-mail: pkyadawa@aset.amity.edu
The ultrasonic properties of the hexagonal closed packed structured Ag-Zn alloys have been studied at room temperature for their characterization. For the investigations of ultrasonic properties, I have also computed second order elastic constants using Lennard–Jones Potential. The velocities V1 and V2 have minima and maxima respectively with 450 with unique axis of the crystal, while V3 increases with the angle from unique axis. The inconsistent behaviour of angle dependent velocities is associated to the action of second order elastic constants. Debye average sound velocities of these alloys are increasing with the angle and has maximum at 550 with unique axis at room temperature. Hence when a sound wave travels at 550 with unique axis of these alloys, then the average sound velocity is found to be maximum. Ag0.2Zn0.8 alloy is more suitable for industrial and other uses, as it having highest elastic constants and lowest attenuation in comparison to other Ag-Zn samples. The mechanical and ultrasonic properties of these alloys will not be better than pure Ag and Zn due to their low SOEC and high ultrasonic attenuation. Achieved results have been discussed and compared with available experimental and theoretical results.
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