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

NC-203 ( SiC )

Material Summary:

                      [Ref. 1,2,3,4,5]           
Manufacturer........: Norton Co.
Material Designation: NC-203 
Material Form.......: polycrystal
Composition.........: SiC
Processing..........: Hot pressed

References:

[1] S. W. Freiman, A. Williams, J. J. Mecholsky, and R. W. Rice, "Fracture of Si3N4 and SiC" Ceramic Microstructures, pp. 824-834 (1976). [2] S. Freiman, private communications (1977).

[3] G. R. Anstis, P. Chantikul, B. R. Lawn, and D. B. Marshall, "A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements" Journal of the American Ceramic Society, Vol. 64, No. 9, pp. 533-538 (1981).

[4] C.A. Tracy and G.D. Quinn, "Fracture Toughness by the Surface Crack in Flexure (SCF) Method," Ceramic Engineering and Science Proceedings, Vol. 15, pp. 837-845 (1994).

[5] 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] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
[1-3]                                19          AMDCB          air       Ref. 1
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 10                                  18.52       AMDCB          air       Ref. 2
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  4                    3.38                      ICS            air       Ref. 3; E = 457 GPa
                       4.42                      IS                               E = 457 GPa
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<1 1.2 3.85 scf air ref. 4; e=450 gpa; 3.28 g />cm3
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                       4.37                      SCF            air       Ref. 5; E = 460 GPa, nu = 0.17,
                                                                                  density = 3.36 g/cm3
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