Fracture Toughness / Fracture Energy Data for Ceramics

NIST Standard Reference Database 138


Reference:

Reference: NIST Structural Ceramics Database

Other material collections: Property Data Summaries



Other Toughness materials

AD-995 ( Al2O3 )

Material Summary:

                      [Ref. 1,2]              
Manufacturer........: Coors Porcelain Co.
Material Designation: AD-995         
Material Form.......: Polycrystal     
Composition.........: 99.5% Al2O3  
  (mass fraction)
Processing..........: 

References:

[1] S. W. Freiman, K. R. McKinney, and H. L. Smith, "Slow Crack Growth in Polycrystalline Ceramics" Fracture Mechanics of Ceramics, Vol. 2, pp. 659-676 (1974).

[2] L. M. Barker, "Short Rod K(Ic) Measurements of Al2O3" Fracture Mechanics of Ceramics, Vol. 3, pp. 483-493 (1973).

Property Table:

    Temperature = 23 °C
    Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
    Size                 Toughness     Energy     Method       Environment
    [µm]       [%]       [MPa·m1/2]     [J/m2]
    ------   --------   ------------   ---------  -----------  -----------  ----------------------------
    4 [3-5]                3.7          19          AMDCB         air       Ref. 1; KIc obtained at a
    velocity of 10-4 m/s

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    17 [5-50]               4.08                     SR            air       Ref. 2; E = 372 GPa
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