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

Lucalox-HS ( Al2O3 )

Material Summary:

                      [Ref. 1,2]                
Manufacturer........: GE               
Material Designation: Lucalox-HS       
Material Form.......: Polycrystal      
Composition.........: 99.9% 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] S. W. Freiman, private communication (1977).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  ----------------------------
8 [6-10]                 3.7         18         AMDCB          air       Ref. 1; as received
                         5.0         32         AMDCB                            after grain growth
                                                                                 KIc was obtained using a 
                                                                                 velocity of 10-4 m/s;
                                                                                 E = 393 GPa
--------------------------------------------------------------------------------------------------------
 10                                  21.9       AMDCB          air       Ref. 2
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