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

NAV-8 ( Si3N4 )

Material Summary:

                      [Ref. 1]                         
Manufacturer........: Norton Co.          
Material Designation: NAV-8   
Material Form.......: Polycrystal     
Composition.........: Si3N4             
Processing..........: Hot pressed

References:

[1] S. W. Freiman, A. Williams, J. J. Mecholsky, and R. W. Rice, "Fracture of Si3N4 and SiC" 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]                    5.5         49         AMDCB         air        Major additive/impurity = Zr 
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