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Effect of the porosity and particle size of materials on sound-wave velocity

  • S. S. Sekoyan
  • V. R. Shlegel’
  • S. S. Batsanov
  • S. M. Gavrilkin
  • K. B. Poyarkov
  • A. A. Gurkov
  • A. A. Duro
Article

Abstract

Methods were developed to measure longitudinal and transverse sound velocities in porous materials — various Zn-S mixtures and KBr samples. It is shown that, on exposure to ultrasound with a wavelength far exceeding the pore size in pressed samples, a porous body behaves as a continuous medium. Sound velocity in a porous material was found to depend on the quantitative ratio of vacuum, air, and toluene in the pores. Bulk sound velocities estimated using an additive method agree with experimental data within an error not more than 10%. It was found that removal of moisture traces from porous samples led to significant absorption of sound waves.

Key words

longitudinal shear and bulk sound velocities porous body elastic modulus 

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References

  1. 1.
    S. S. Batsanov, Experimental Foundations of Structural Chemistry, Moscow Univ. Press, Moscow (2008).Google Scholar
  2. 2.
    O. Yeheskel, R. Chaim, Z. Shen, and M. Nygren, “Elastic moduli of grain boundaries in nanocrystalline MgO ceramics,” J. Mater. Res., 20, No. 3, 719–725 (2005).CrossRefADSGoogle Scholar
  3. 3.
    Y. Ma, Q. Cui, L. Cui, and Zh. He, “X-ray diffraction study of nanocrystalline tungsten nitride and tungsten to 31 GPa,” J. Appl. Phys., 102, No. 1, 013525 (2007).CrossRefADSGoogle Scholar
  4. 4.
    L. H. Shen, X. F. Li, Y. M. Li, et al., “Pressure-induced structural transition in AlN nanowires,” Appl. Phys. Lett., 89, No. 14, 141903 (2006).Google Scholar
  5. 5.
    D. L. Guriev, Yu. A. Gordopolov, S. S. Batsanov, et al., “Solid-state detonation in the zinc-sulfur system,” Appl. Phys. Lett., 88, No. 2, 024102 (2006).Google Scholar
  6. 6.
    M. P. Shaskol’skaya, Acoustic Crystals [in Russian], Nauka, Moscow (1982).Google Scholar
  7. 7.
    S. S. Batsanov, “Additive method for calculating sound velocity in porous materials,” Neorg. Mater., 43, No. 10, 1195–1197 (2007).CrossRefGoogle Scholar

Copyright information

© MAIK/Nauka 2009

Authors and Affiliations

  • S. S. Sekoyan
    • 1
  • V. R. Shlegel’
    • 1
  • S. S. Batsanov
    • 1
    • 2
  • S. M. Gavrilkin
    • 1
    • 2
  • K. B. Poyarkov
    • 3
  • A. A. Gurkov
    • 3
  • A. A. Duro
    • 3
  1. 1.All-Russia Research Institute of Physicotechnical and Radio Engineering MeasurementsMendeleevoRussia
  2. 2.Institute of Structural Macrokinetics and Materials ScienceRussian Academy of SciencesChernogolovkaRussia
  3. 3.Moscow State Institute of Electronic Engineering (Technical university)MoscowRussia

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