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

Diamond ( C )

Material Summary:

                      [Ref. 1]                    [Ref. 2]                         
Manufacturer........: In laboratory               Natural specimen          
Material Designation: diamond (CVD)               diamond
Material Form.......: polycrystal                 single crystal     
Composition.........: C                           C
Processing..........: Chemical vapor deposition   Natural specimen

References:

[1] M. D. Drory, C. F. Gardinier, and J. S. Speck, "Fracture Toughness of Chemically Vapor-Deposited Diamond," Journal of the American Ceramic Society, Vol. 74, pp. 3148-3150 (1991).

[2] N. V. Novikov and S. N. Dub, "Hardness and Fracture Toughness of CVD Diamond Film," Diamond and Related Materials, Vol. 5, pp. 1026-1030 (1996).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                        5.3                      ICS          air        Ref. 1; E = 1000 GPa; H = 81 GPa
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                       14.0                      ICS          air        Ref. 2; Indent diagonal parallel to <011>
                        6.6                      ICS          air                Indent diagonal parallel to <001>
                        6.7                      ICS          air                Radial cracks along (111) planes
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