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

Boron Carbide ( B4C )

Material Summary:

                      [Ref. 1]        [Ref. 2]        [Ref. 3]        [Ref. 4]        [Ref. 5]
Manufacturer........: Norton Co.      ESK             laboratory      laboratory      laboratory
Material Designation: boron carbide   boron carbide   boron carbide   boron carbide   boron carbide
Material Form.......: polycrystal     polycrystal     polycrystal     polycrystal     polycrystal
Composition.........: B4C             B4C              B4C             B4C             B4C
Processing..........:                 hot pressed     hot pressed     hot pressed     hot pressed
                      [Ref. 6]
Manufacturer........: Ceradyne
Material Designation: boron carbide
Material Form.......: polycrystal
Composition.........: B4C
Processing..........: 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] G. De With, "High Temperature Fracture of Boron Carbide: Experiments and Simple Theoretical Models," Journal of Materials Science, Vol. 19, pp. 457-466 (1984).

[3] G.A. Gogotsi, Y.L. Groushevsky, O.B. Dashevskaya, Y.G. Gogotsi, and V.A. Lavrenko, "Complex Investigation of Hot-Pressed Boron Carbide," Journal of the Less-Common Metals, Vol. 117, pp. 225-230 (1986).

[4] G.W. Hollenberg and G. Walther, "The Elastic Modulus and Fracture of Boron Carbide," Journal of the American Ceramic Society, Vol. 63, pp. 610-613 (1980).

[5] W. F. Du and T. Watanabe, "High-Toughness B4C-AlB12 Composites Prepared by Al Infiltration," Journal of the European Ceramic Society, Vol. 17, pp. 879-884 (1997).

[6] R. J. Gettings and G. D. Quinn, "Surface Crack in Flexure (SCF) Measurements of the Fracture Toughness of Advanced Ceramics," Ceramic Engineering and Science Proceedings, Vol. 16, pp. 539-544 (1995).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  ----------------------------
  20                                15           AMDCB         air       Ref. 1; E = 450 GPa
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                         3.7        11.8         SENB          air       Ref. 2
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                         3.2                     SENB          air       Ref. 3
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 [2-7]       8           1.8         4.6         DT            air       Ref. 4
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                         4.2                     ICS           air       Ref. 5
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                         3.08                    SCF           air       Ref. 6; E = 455 GPa,
                                                                                 density = 2.48 g/cm3
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