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

XA16 ( Al2O3 )

Material Summary:

                      [Ref. 1,2,3]
Manufacturer:         Alcoa
Material Designation: XA16
Material Form:        Polycrystalline
Composition:          Al2O3
Processing:           Sintered at various temperatures and times.

References:

[1] L. A. Simpson, "Effect of Microstructure on Measurements of Fracture Energy of Al2O3" Journal of the American Ceramic Society, Vol. 56, No. 1, pp. 7-11 (1973).

[2] L. A. Simpson, "Microstructural Considerations for the Application of Fracture Mechanics Techniques" Fracture Mechanics of Ceramics, Vol. 2, pp. 567-577 (1974).

[3] A. G. Evans and G. Tappin, "Effects of Microstructure on the Stress to Propagate Inherent Flaws" Proceedings of the British Ceramic Society, No. 20, pp. 275-297 (1972).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  ----------------------------
  0.53      10                      11.5(20)     WOF           air       Ref. 1; Connected porosity
                                    11.9(17)     SENB
  1.3        8                      15.3(28)     SENB
                                    15.8(15)     SENB
                                    17.9(22)     WOF
  0.89       6                      26.8(15)     SENB
  1.5        6                      15(3)        WOF
                                    22.5(20)     SENB
  1.8        6                      27.1(41)     SENB
 
  1.3        5                      31.4(83)     SENB
--------------------------------------------------------------------------------------------------------
  3.3        5                      22.7(31)     WOF           air       Ref. 1; Partially connected porosity
                                    22.6(10)     SENB
  4.1        5                      23.1(14)     WOF
                                    24.5(46)     SENB
  1.8        2.5                    30           WOF(extrapolated)
                                    22.2(9)      SENB
  1.9        2.5                    26           WOF(extrapolated)
                                    25.1(31)     SENB
  2.6        2.5                    24.7(28)     SENB
--------------------------------------------------------------------------------------------------------
  1.3        4.1                    36.7(60)     SENB          air       Ref. 1; Closed porosity
  1.3        2.9                    35           WOF(extrapolated)
                                    43.2(14)     SENB
 
  2.7        2.9                    38.0(32)     SENB
  3.7        2.0                    36.3(20)     SENB
  5.0        1.2                    36.5(12)     SENB
  7.2        1.0                    31.1(25)     SENB
 14.1        1.5                    47.3(16)     WOF
                                    30.0(28)     SENB
 15.6        4.0                    38.9(28)     WOF
 17.8        3.0                    38.6(44)     SENB
 18.5        1.5                    39.6(31)     SENB
 22.8        3.5                    36.2(20)     WOF
                                    22.6(14)     SENB
 
 22.8        2.0                    30.0(32)     SENB
--------------------------------------------------------------------------------------------------------
  3                                 22.5(30)     SENB          air       Ref. 2
                                    20.8(11)     DCB
 20                                 21.1(20)     SENB
                                    38.8(30)     DCB
--------------------------------------------------------------------------------------------------------
  3          5                      20(4)        SENB          air       Ref. 3
 30          5                      20(4)        SENB
100          5                      10(3)        SENB
  3         20                      16(4)        SENB
  3         50                      10(3)        SENB
--------------------------------------------------------------------------------------------------------