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

Mullite ( 3Al2O3·2SiO2 )

Material Summary:

                      [Ref. 1]              [Ref. 2,3,4,5,7]      [Ref. 6]
Manufacturer........: Lehigh University     In laboratory         In laboratory
Material Designation: mullite               mullite               mullite
Material Form.......: polycrystal           polycrystal           polycrystal
Composition.........: 3Al2O3·2SiO2           3Al2O3·2SiO2           3Al2O3·2SiO2
Processing..........:                       sintered              hot pressed

References:

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

[2] S. Kanzaki and H. Tabata, "Sintering and Mechanical Properties of Mullite Derived Via Spray Pyrolysis," Ceramic Transactions, Vol. 6, pp. 339-351 (1990).

[3] S. Kanzaki, H. Tabata, T. Kumazawa, and S. Ohta, "Sintering and Mechanical Properties of Stoichiometric Mullite," Journal of the American Ceramic Society, Vol. 68, pp. C-6 - C-7 (1985).

[4] M.G.M.U. Ismail, Z. Nakai, and S. Somiya, "Microstructure and Mechanical Properties of Mullite Prepared by the Sol-Gel Method," Journal of the American Ceramic Society, Vol. 70, pp. C-7 - C-8 (1987).

[5] Y. Okamoto, H. Fukudome, K. Hayashi, and T. Nishikawa, "Creep Deformation of Polycrystalline Mullite," Journal of the European Ceramic Society, Vol. 6, pp. 161-168 (1990).

[6] T. Mah and K.S. Mazdiyasni, "Mechanical Properties of Mullite," Journal of the American Ceramic Society, Vol. 66, pp. 699-703 (1983).

[7] M. I. Osendi and C. Baudin, "Mechanical Properties of Mullite Materials," Journal of the European Ceramic Society, Vol. 16, pp. 217-224 (1996).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                                     11         AMDCB          air       Ref. 1; E = 222 GPa
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                         2.83                   SENB           air       Ref. 2; 64 % Al2O3 mass fraction
                         2.57                   SENB                             68 %
                         2.62                   SENB                             70 %
                         2.45                   SENB                             72 %
                         2.69                   SENB                             74 %
                         2.79                   SENB                             75 %
                         2.48                   SENB                             78 %
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            5            2.8                    SENB           air       Ref. 3
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                         2.7                    ICS            air       Ref. 4; 3.15 g/cm^3
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                         2.7                    ICS            air       Ref. 5
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                         1.8                    CF             air       Ref. 6
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                         2.5                    SENB           air       Ref. 7; E = 200 GPa
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