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

NCX-5102 ( Si3N4 )

Material Summary:

                      [Ref. 1,2]                         
Manufacturer........: Norton Company          
Material Designation: NCX-5102  
Material Form.......: polycrystal     
Composition.........: Si3N4 + 4 % Y2O3
   (mass fraction)
Processing..........: Hot isostatically pressed

References:

[1] R. J. Gettings and G. D. Quinn, "Surface Crack in Flexure (SCF) Measurements of the Fracture Toughness of Advanced Ceramics," Ceramic Engineering and Science Proceedings, Vol. 16, pp. 539-544 (1995)

[2] T. Hansson, U. Ramamurty, C. Bull, and R. Warren, "Elevated Temperature Fracture Behavior of Monolithic and SiCw-Reinforced Silicon Nitride Under Quasi-static Loads," Materials Science and Engineering, Vol. A209, pp. 137-148 (1996).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                        5.36                    SCF           air        Ref. 1; density = 3.23 g/cm3
--------------------------------------------------------------------------------------------------------
2 [0.5-3]               6.0                     SEPB          air        Ref. 2
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