Fracture Toughness / Fracture Energy Data for Ceramics

NIST Standard Reference Database 138

Last Update to Data Content: 1998



Reference: NIST Structural Ceramics Database

Other material collections: Property Data Summaries

Other Toughness materials

Boron Nitride ( BN )

Material Summary:

                      [Ref. 1]                         
Manufacturer........: In laboratory          
Material Designation: cubic boron nitride
Material Form.......: polycrystal     
Composition.........: BN
Processing..........: High pressure, high temperature synthesis


[1] T. Taniguchi, M. Akaishi, and S. Yamaoka, "Mechanical Properties of Polycrystalline Translucent Cubic Boron Nitride as Characterized by the Vickers Indentation Method," Journal of the American Ceramic Society, Vol. 79, pp. 547-549 (1996).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
 3 [2-5]                5.0                      ICS          air        H/E = 0.08