Ultrasonic Study of Osmium and Ruthenium

Authors: Pandey, D.K.; Singh, Devraj; Yadawa, P.K.

Source: Platinum Metals Review, Volume 53, Number 2, April 2009 , pp. 91-97(7)

Publisher: Johnson Matthey

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Abstract:

Ultrasonic properties of two platinum group metals, osmium and ruthenium, are presented for use in characterisation of their materials. The angle-dependent ultrasonic velocity has been computed for the determination of anisotropic behaviour of these metals. For the evaluation of ultrasonic velocity, attenuation and acoustic coupling constants, the higher-order elastic constants of Os and Ru have been calculated using the Lennard-Jones potential. The nature of the angle-dependent ultrasonic velocity is found to be similar to those of molybdenum-ruthenium-rhodium-palladium alloys, Group III nitrides and lave-phase compounds such as TiCr₂, ZrCr₂ and HfCr₂. The results of this investigation are discussed in correlation with other known thermophysical properties.

Document Type: Research article

DOI: 10.1595/147106709X430927

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