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

Alpha Silicon Carbide ( SiC )

Material Summary:

                      [Ref. 1,2,3]             [Ref. 4]                 [Ref. 5]
Manufacturer........: Carborundum              Unknown                  Unknown
Material Designation: alpha silicon carbide    alpha silicon carbide    alpha silicon carbide
Material Form.......: Polycrystal              Polycrystal              Single Crystal
Composition.........: SiC                      SiC                      SiC
Processing..........: 

References:

[1] R. Tressler, private communications (1978).

[2] S. Freiman, private communications (1978).

[3] D. Munz, private communications (1980).

[4] M. Srinivasan and S. G. Seshadri, "Application of Single Edge Notched Beam and Indentation Techniques to Determine Fracture Toughness of Alpha Silicon Carbide" Fracture Mechanics for Ceramics, Rocks, and Concrete, pp. 46-67 (1981).

[5] O. Adewoye, "Surface and Subsurface Fracture in Single Crystal of Alpha-SiC" Fracture Mechanics of Ceramics, Vol. 5, pp. 107-120 (1983).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                        4.6                      DT            air       Ref. 1
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                        3.47                     DCB           air       Ref. 2           
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                        2.96                     CNB           air       Ref. 3
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                        4.78                     SENB          air       Ref. 4
                        3.31                     CF  
                        3.65                     ICS
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                        1.10                     ICS           air       Ref. 5; KIc applies to {10-10} trace
                                                                                 on (0001) surface, E = 93 GPa
                        1.39                     ICS           air               KIc applies to {2-1-10} trace
                                                                                 on (0001) surface, E = 93 GPa
                        3.09                     ICS           air               KIc applies to {2-1-10} trace
                                                                                 on (10-10) surface, E = 93 GPa
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