Journal of Materials Science

, Volume 19, Issue 1, pp 254–258 | Cite as

Hertzian indentation of sintered alumina

  • M. T. Laugier


Hertzian indentation experiments have been performed on sinteredα-Al2O3 using WC-Co spheres with radii in the range 0.5 to 6.5 mm. The critical loadP* to cause ring cracking was proportional to indenter radiusR which is consistent with Auerbach's law. Values of room temperature fracture surface energy,γ, and fracture toughness,K1C, were derived using the theories of Frank and Lawn and Warren.


Polymer Alumina Surface Energy Fracture Surface Fracture Toughness 
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  1. 1.
    F. Auerbach,Ann. Phys. Chem. 43 (1981) 61.Google Scholar
  2. 2.
    H. Hertz, “Hertz's Miscellaneous Papers” (Macmillan, London, 1896).Google Scholar
  3. 3.
    A. A. Griffith,Phil. Trans. Roy. Soc. A 221 (1920) 163.Google Scholar
  4. 4.
    S. Timoshenko andJ. N. Goodier, “Theory of Elasticity”, 2nd Edn. (McGraw-Hill, New York, 1951).Google Scholar
  5. 5.
    R. Warren,Acta Metall. 26 (1978) 1759.CrossRefGoogle Scholar
  6. 6.
    F. C. Frank andB. R. Lawn,Proc. Roy. Soc. A 299 (1967) 291.Google Scholar
  7. 7.
    B. D. Powell andD. Tabor,J. Phys. D Appl. Phys. 3 (1970) 783.CrossRefGoogle Scholar
  8. 8.
    Hj Matzke andR. Warren,J. Nucl. Mat. 91 (1980) 205.CrossRefGoogle Scholar
  9. 9.
    Hj Matzke,J. Mater. Sci. 15 (1980) 739.CrossRefGoogle Scholar
  10. 10.
    J. P. A. Tillet,Proc. Phys. Soc. B69 (1956) 47.Google Scholar
  11. 11.
    M. M. Chaudhri andE. H. Yoffe,Phil. Mag. A44 (1981) 667.Google Scholar
  12. 12.
    W. R. Davis,Trans. Brit. Ceram. Soc. 67 (1968) 515.Google Scholar
  13. 13.
    N. Claussen, B. Mussler andM. V. Swain,J. Amer. Ceram. Soc. 65 (1982) c-14.Google Scholar
  14. 14.
    F. F. Lange,J. Mater. Sci. 17 (1982) 247.CrossRefGoogle Scholar
  15. 15.
    A. G. Evans andE. A. Charles,J. Amer. Ceram. Soc. 59 (1976) 371.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1984

Authors and Affiliations

  • M. T. Laugier
    • 1
  1. 1.Hard Materials Research CentreSandvik LimitedCoventryUK

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