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

Silicon Oxynitride ( Si2N2O )

Material Summary:

                      [Ref. 1]    
Manufacturer........: In laboratory
Material Designation: silicon oxynitride
Material Form.......: polycrystal
Composition.........: Si2N2O
Processing..........: hot pressed

References:

[1] M. Ohashi, K. Nakamura, K. Hirao, M. Toriyama, and S. Kanzaki, "Factors Affecting Mechanical Properties of Silicon Oxynitride Ceramics," Ceramics International, Vol. 23, pp. 27-37 (1997).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
0.8 (minor axis)        3.2                       ICS          air       Ref. 1; E = 140 GPa, nu = 0.28,
5.0 (major axis)                                                                 density = 4.4 g/cm3
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