Fracture Toughness / Fracture Energy Data for Ceramics

NIST Standard Reference Database 138


Reference: NIST Structural Ceramics Database

Other material collections: Property Data Summaries

Other Toughness materials

Gallium Nitride ( GaN )

Material Summary:

                      [Ref. 1]                         
Manufacturer........: In laboratory          
Material Designation: gallium nitride  
Material Form.......: single crystal     
Composition.........: GaN
Processing..........: Crystal growth


[1] M. D. Drory, J. W. Ager, T. Suski, I. Grzegory, and S. Porowski, "Hardness and Fracture Toughness of Bulk Single Crystal Gallium Nitride," Applied Physics Letters, Vol. 69, pp. 4044-4046 (1996).

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                      ICS          air        Single crystal