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

Zinc Sulfide ( ZnS )

Material Summary:

                      [Ref. 1,2]
Manufacturer........: Raytheon
Material Designation: zinc sulfide
Material Form.......: Polycrystal 
Composition.........: ZnS
Processing..........: CVD

References:

[1] D. A. Shockey, D. J. Rowcliffe, and K. C. Dao, "Fracture Toughness of CVD ZnS" ONR Contract N00014-76-C-0657 (1977).

[2] 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).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
  7                     0.75                     ER            air       Ref. 1; flat bottomed notch
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                        1.0                      ICS          dry N2     Ref. 2; H = 1.9 GPa; nu = 0.3
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