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

Barium Titanate ( BaTiO3 )

Material Summary:

                      [Ref. 1]         [Ref. 2,a]       [Ref. 2,b]         
Manufacturer........: Channel Indust.  Clevite Corp.    NRL
Material Designation: barium titanate  barium titanate  barium titanate
Material Form.......: Polycrystal      Polycrystal      Polycrystal
Composition.........: BaTiO3           BaTiO3            BaTiO3


[1] S. W. Freiman, K. R. McKinney, and H. L. Smith, "Slow Crack Growth in Polycrystalline Ceramics" Fracture Mechanics of Ceramics, Vol. 2, pp. 659-676 (1974).

[2] J. J. Mecholosky, S. W. Freiman, and R. W. Rice, "Fracture Surface Analysis of Ceramics" Journal of Materials Science, Vol. 11, pp. 1310-1319 (1976).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                        1.05         4.5        AMDCB          air       Ref. 1;  KIc obtained at a 
                                                                                  velocity of 10-4 m/s
 5                                   5          AMDCB                    Ref. 2a; E = 120 GPa
 1-20                                6          AMDCB                    Ref. 2b; LiF and MgO are main
                                                                                  impurities, and E = 120 GPa