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

Magnesium Oxide ( MgO )

Material Summary:

                      [Ref. 1,a]               [Ref. 1,b]         [Ref. 2,3]        [Ref. 4]        
Manufacturer........: Thermal Syndicate Ltd.   Eastman Kodak      Unknown           Norton
Material Designation: magnesium oxide          magnesium oxide    magnesium oxide   magnesium oxide
Material Form.......: Polycrystal              Polycrystal        Polycrystal       Single Crystal
Composition.........: MgO                      MgO                MgO               MgO
Processing..........: 
                      [Ref. 5]
Manufacturer........: In laboratory
Material Designation: magnesium oxide
Material Form.......: polycrystal
Composition.........: MgO
Processing..........: hot pressed

References:

[1] F. J. P. Clarke, H. G. Tattersall, and G. Tappin, "Toughness of Ceramics and Their Work of Fracture," Proceedings of the British Ceramic Society, Vol. 6, 163-172 (1966).

[2] R. W. Rice, S. W. Freiman, and P. F. Becher, "Grain-Size Dependence of Fracture Energy in Ceramics: I, Experiment" Journal of the American Ceramic Society, Vol. 64, No. 6, pp. 345-350 (1981).

[3] J. B. Kessler, J. E. Ritter, and R. W. Rice, "The Effects of Microstructure on the Fracture Energy of Hot Pressed MgO" Surface and Interface of Glasses and Ceramics", pp. 529-544 (1974

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

[5] K. Yasuda, S. D. Kim, Y. Kanemichi, Y. Matsuo, and S. Kimura, "Influence of Grain Size and Temperature On Fracture Toughness of MgO Sintered Bodies," Journal of the Ceramic Society of Japan, Int. Edition, Vol. 98, pp. 44-49 (1990).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
 10                                 16           WOF           air       Ref. 1,a
 50                                 19.5         WOF                          1,a
100                                 35           WOF                          1,a
  7                                  4.2         WOF                          1,b
 13                                  8.9         WOF                          1,a
 23                                 16           WOF                          1,a
 38                                 17           WOF                          1,b
130                                 14           WOF                          1,a
150                                  7.9         WOF                          1,a
--------------------------------------------------------------------------------------------------------
  1                                  6           AMDCB         air       Ref. 2
 10                                 18           AMDCB
 15                                 14           AMDCB
 30                                  4           AMDCB
 75                                 11           AMDCB
--------------------------------------------------------------------------------------------------------
  6                                  0.95        WOF           air       Ref. 3; Up to 1.0% porosity
 13                                  0.9         WOF                             Up to 1.0% porosity
 30                                 22           WOF                             Up to 1.0% porosity
 55                                 21           WOF                             Up to 1.0% porosity
 95                                 29           WOF                             Up to 1.0% porosity
 10                                 11           WOF                             Less than 0.1% porosity
100                                 11           WOF                             Less than 0.1% porosity
--------------------------------------------------------------------------------------------------------
                                     3           AMDCB         air       Ref. 4; {100} plane; E = 280 GPa
--------------------------------------------------------------------------------------------------------
 10                     1.8                      CNB           air       Ref. 5
 28                     1.6                      CNB
 58                     1.3                      CNB
 90                     2.0                      CNB
139                     1.9                      CNB
188                     2.0                      CNB
--------------------------------------------------------------------------------------------------------