Thermal Diffusivity of Ba-MICA and Ba-MICA/Yttria-Stabilized Zirconia Composites

  • V. V. Mirkovich


In search of alternate sources for generating and storing energy, ionically conductive ceramics are being investigated. Stabilized zirconia is one such material. Its thermal shock resistance is, however, relatively low. By preparing ceramic composites of stabilized zirconia with a dispersed second phase — a synthetic Ba-mica in this case — the thermal shock resistance of the basic material can be enhanced.

Previous measurements in this laboratory of thermal transport properties of Ba-mica/yttria-stabilized zirconia composites, as well as the measurements by others on similar composites, have produced somewhat unexpected results. To expand on these measurements, a specimen of solid Ba-mica as well as an additional Ba-mica/yttríastabilized zirconia composite were prepared and their thermal diffusivities determined in the range of 25° to 700°C. Measurements on oxygen deficient Ba-mica/zirconia composite indicate that oxygen vacancy formation appreciably depresses the thermal transport properties.


Thermal Diffusivity Thermal Shock Resistance Graphite Mold Thermal Diffusivity Measurement Thermal Transport Property 
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  1. 1.
    Murphy, D.W. and Christian, P.A. “Solid state electrodes for high energy batteries”; Science; 205: 4407: 651–656; 1979.CrossRefGoogle Scholar
  2. 2.
    Kuikkola, K. and Wagner, C. “Measurements on galvanic cells involving solid electrolytes”; J Electrochem Soc; 102: 6: 379–387; 1957.CrossRefGoogle Scholar
  3. 3.
    Wheat, T.A. “Development of Zirconia Electrolyte for use in a steelmaking oxygen. probe”; CANMET Report 76–13; CANMET, Energy, Mines and Resources Canada; 1975.Google Scholar
  4. 4.
    Hasselman, D.P.H. “Griffith criterion and thermal shock resistance of single-phase versus multi-phase brittle ceramics”; J Am Cer Soc; 52: 5: 288–9; 1969.CrossRefGoogle Scholar
  5. 5.
    Hasselman, D.P.H. “Micromechanical thermal stresses and thermal stress resistance of porous brittle ceramics”; ibid; 52: 4: 215–6; 1969.Google Scholar
  6. 6.
    Hasselman, D.P.H. “Unified theory of thermal shock fracture initiation and crack propagation in brittle ceramics”; ibid; 52: 11; 600–6; 1969.Google Scholar
  7. 7.
    Hasselman, D.P.H. and Shaffer, P.T.B. “Factors affecting thermal shock resistance of polyphase ceramic bodies, Pt. II”; Techn Rept WADD-TR-60–749; Contract AF 33 (616)-6806, 155 pp.; April 1962.Google Scholar
  8. 8.
    Rankin, D.T., Stiglich, J.J., Petrak, D.R. and Ruh, R. “Hot pressing and mechanical properties of Al203 with an Mo-dispersed phase”; J Am Cer Soc; 54: 6: 277–81; 1971.CrossRefGoogle Scholar
  9. 9.
    Lange, F.F. “Fracture energy and strength behaviour of a sodium borosilicate glass–Al203 composite system”; ibid; 54: 12: 614–20; 1971.Google Scholar
  10. 10.
    McCauley, J.W. “Fabrication of novel composites - Part II: fabrication and properties of Ba-mica/Al203 composites”; AMMRC TR 73–32, Army Materials and Mechanics Research Center, Watertown, Massachusetts, U.S.A.; May 1973.Google Scholar
  11. 11.
    Youngblood, G.E., Gentsen, L.D., McCauley, J.W. and Hasselman, D.P.H. “Thermal Diffusivity of Ba-mica/alumina composites”; Am Cer Sec Bull; 58: 6: 620–1; 1979.Google Scholar
  12. 12.
    Tye, R.P. and McCauley, J.W. “The thermal conductivity and linear expansion of Ba-mica/alumina composite materials”; Rev Int Hautes Temp Refract; 12: 6: 100–5; 1975.Google Scholar
  13. 13.
    Markovich, V.V. “Thermal diffusivity of yttria-stabilizied zirconia”; High Temp–High Pressures; 8: 2: 231–5; 1976.Google Scholar
  14. 14.
    Mirkovich, V.V. “Thermal diffusivity of Ba-mica/yttria-stabilized zirconia composites”; to be published in Rev Int Hautes Temp Refract; 1979.Google Scholar
  15. 15.
    Mazdiyasni, K.S., Hynch, C.T. and Smith, J.S. H. “Cubic phase stabilization of translucent yttria-zirconia at very low temperatures”; J Am Cer Soc; 50: 10: 532–37; 1967.CrossRefGoogle Scholar
  16. 16.
    Phillipi, C.M. and Mazdiyasni, K.S. “Infrared and raman spectra of zirconia polymorphs”; ibid; 54: 5: 254–8; 1971Google Scholar
  17. 17.
    Mirkovich, V.V. “Thermal diffusivity measurement of armco iron by a novel method”; Rev Scient Instr; 48: 5: 560–5; 1977.CrossRefGoogle Scholar
  18. 18.
    Mirkovich, V.V. “An apparatus for measuring thermal diffusivity in air”; CANMET Report 77–21; CANNET, Energy, Mines and Resources Canada; 1976.Google Scholar

Copyright information

© Purdue Research Foundation 1983

Authors and Affiliations

  • V. V. Mirkovich
    • 1
  1. 1.Canada Centre for Mineral and Energy TechnologyOttawaCanada

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