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

Yttrium Oxide ( Y2O3 )

Material Summary:

                      [Ref. 1]                 [Ref. 2]
Manufacturer........: In laboratory            Raytheon Research Division
Material Designation: yttrium oxide; yttria    yttrium oxide; yttria
Material Form.......: polycrystal              polycrystal
Composition.........: Y2O3                      Y2O3
Processing..........: Sintered                 Hot isostatically pressed

References:

[1] L. D. Monroe and J. R. Smyth, "Grain Size Dependence of Fracture Energy of Y2O3" Journal of the American Ceramic Society, Vol. 61, No. 11-12, pp. 538-539 (1978).

[2] D. C. Harris, G. A. Hayes, N. A. Jaeger, L. D. Sawyer, R. C. Scheri, M. E. Hills, K. R. Hayes, S E. Homer, Y. L. Tsai, and J. J. Mecholsky, Jr., "Mechanical Strength of Hemispheric Domes of Yttria and Lanthana-Doped Yttria," Journal of the American Ceramic Society, Vol. 75, pp. 1247-1253 (1992).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
  5         4                        4.6         SENB          air       Ref. 1
  9         2                        5.0         SENB
 27         3                        5.2         SENB
 42         3                        4.9         SENB
 64         2                        4.1         SENB
 90         2                        3.8         SENB
113         2                        3.8         SENB
--------------------------------------------------------------------------------------------------------
450                    0.71                      ICS           air       Ref. 2
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