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

Hexoloy SA ( SiC )

Material Summary:

                      [Ref. 1,2,3,4,5,6]          
Manufacturer........: Carborundum Co.
Material Designation: Hexoloy SA
Material Form.......: polycrystal
Composition.........: SiC (alpha)
  (mass fraction)      + 0.4 % B
                       + 0.5 % free C
Processing..........: sintered

References:

[1] A. Ghosh, M.G. Jenkins, K.W. White, A.S. Kobayashi, and R.C. Bradt, "Elevated-Temperature Fracture Resistance of a Sintered alpha-Silicon Carbide," Journal of the American Ceramic Society, Vol. 72, pp. 242-247 (1989).

[2] D.E. McCullum, N.L. Hecth, L. Chuck, and S.M. Goodrich, "Summary of Results of the Effects of Environment on Mechanical Behavior of High-Performance Ceramics," Ceramic Engineering and Science Proceedings, Vol. 12, pp. 1886-1913 (1991).

[3] T.E. Easler, R.C. Bradt, and R.E. Tressler, "Strength Distributions of SiC Ceramics After Oxidation and Oxidation Under Load," Journal of the American Ceramic Society, Vol. 64, pp. 731-734 (1981).

[4] K. D. McHenry and R. E. Tressler, "Fracture Toughness and High-Temperature Slow Crack Growth in SiC," Journal of the American Ceramic Society, Vol. 63, pp. 152-156 (1980).

[5] M. Srinivasan and S. G. Seshadri, "Application of Single Edge Notched Beam and Indentation Techniques to Determine Fracture Toughness of Alpha Silicon Carbide," in Fracture Mechanics for Ceramics, Rocks, and Concrete, ASTM Special Technical Publication 745, pp. 46-68 (1981).

[6] 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).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
  6         < 2          3.01                      CF           air      Ref. 1
                         2.91                      CN           air
                         3.88                      SENB         air
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  6         < 2          2.6                       CF           air      Ref. 2
                         3.4                       ICS          air
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  6         < 2          3.8                       CF           air      Ref. 3
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  6         < 2          3.5                       CF           air      Ref. 4
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  6         < 2          3.31                      SENB         air      Ref. 5
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  6         < 2          3.01                      SCF          air      Ref. 6
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