NIST Standard Reference Database 138
Last Update to Data Content: 1998
Reference: NIST Structural Ceramics Database
Other material collections: Property Data Summaries
Other Toughness materials
[Ref. 1,a, 2] [Ref. 1,b] [Ref. 3,4,6] [Ref. 5]
Manufacturer........: UKAEA Springfields Lab. Carborundum Co. Unknown Unknown
Material Designation: silicon carbide silicon carbide silicon carbide silicon carbide
Material Form.......: Polycrystal Polycrystal Polycrystal Single Crystal
Composition.........: SiC SiC SiC SiC
Processing..........:
[Ref. 7,a] [Ref. 7,b]
Manufacturer........: Norton Co. General Electric
Material Designation: silicon carbide silicon carbide
Material Form.......: Polycrystal Polycrystal
Composition.........: SiC SiC
Processing..........:
[1] L. A. Simpson, "Microstructural Considerations for the Application of Fracture Mechanics Techniques" Fracture Mechanics of Ceramics, Vol. 2, pp. 567-577 (1974).
[2] J. R. McLaren, G. Tappin, and R. W. Davidge, "The Relationship Between Temperature and Environment, Texture and Strength of Self-Bonded Silicon Carbide" Proceedings of the British Ceramic Society, No. 20, pp. 259-274 (1972).
[3] R. B. Matthews, W. G. Hutchings, and F. Havelock, "A Relation Between Fracture and Flaws in Reaction-Bonded Silicon Carbide" Journal of the Canadian Ceramic Society, Vol. 42, pp. 1-9 (1973).
[4] R. W. Rice, S. W. Freiman, and P. F. Becher, "Grain-Size Dependence of Fracture Energy in Ceramics: I, Experiment" Journal of the American Ceramic Society, Vol. 64, No. 6, pp. 345-350 (1981).
[5] J. L. Henshall, D. J. Rowcliffe, and J. W. Edington, "Fracture Toughness of Single-Crystal Silicon Carbide" Journal of the American Ceramic Society, Vol. 60, No. 7-8, pp. 373-375 (1977).
[6] G. D. Swanson, "Fracture Energies of Ceramics" Journal of the American Ceramic Society, Vol. 55, No. 1, 48-49 (1972).
[7] A. G. Evans and E. A. Charles, "Fracture Toughness Determinations by Indentation" Journal of the American Ceramic Society, Vol. 59, No. 7-8, pp. 371-372 (1976).
Temperature = 23 °C
Grain Porosity Fracture Fracture Measurement Measurement Comments
Size Toughness Energy Method Environment
[µm] [%] [MPa·m1/2] [J/m2]
------ -------- ------------ --------- ----------- ----------- --------------------------------
20 25.6 SENB air Ref. 1,a
15.4 DCB 1,a
100 15.2 SENB air 1,b
22.3 DCB 1,b
--------------------------------------------------------------------------------------------------------
27 SENB argon Ref. 2; A starter crack was
used, and E = 410 GPa
--------------------------------------------------------------------------------------------------------
20 15 DCB air Ref. 3
100 22 DCB
-------------------------------------------------------------------------------------------------------
36 20 AMDCB air Ref. 4
11 22 AMDCB
21 25.5 AMDCB
22 18 AMDCB
37 25 AMDCB
54 20 AMDCB
120 22 AMDCB
120 16 AMDCB
--------------------------------------------------------------------------------------------------------
3.3 SENB air Ref. 5; Notch plane (1120)
crack direction [1100]
--------------------------------------------------------------------------------------------------------
40 32.4 DCB air Ref. 6; E = 335 GPa
--------------------------------------------------------------------------------------------------------
4.0 ICS dry N2 Ref. 7,a; Hot-pressed with Al2O3
H = 19.3 GPa; nu = 0.22
3.1 ICS 7,b; H = 21 GPa; nu = 0.2
--------------------------------------------------------------------------------------------------------