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

Ceralloy 147 ( Si3N4)

Material Summary:

                      [Ref. 1a]          [Ref. 1b] 
Manufacturer........: Cerdyne Corp.      Cerdyne Corp.    
Material Designation: Ceralloy 147       Ceralloy 147
Material Form.......: Polycrystal        Polycrystal
Composition.........: Si3N4+1% MgO        Si3N4+15% Y2O3
  (mass fraction)
Processing..........: 

References:

[1] S. W. Freiman, A. Williams, J. J. Mecholsky, and R. W. Rice, "Fracture of Si3N4" Ceramic Microstructures, pp. 824-834 (1976).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
1-3                     4.6           34         AMDCB         air       Ref. 1a
1-3                     7.2           83         AMDCB                        1b
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