SNW-1000 ( Si3N4 )

Reference: NIST Technical Note

Reference: NIST Structural Ceramics Database

Note: About Property Data Summaries.

Note: Abbreviations and Other Notes

Note: Other Materials



Material Summary:

                      [Ref. 1,2,3]                         
Manufacturer........: GTE Sylvania          
Material Designation: SNW-1000  
Material Form.......: polycrystal     
Composition.........: Si3N4             
Processing..........: sintered




References:

   [1] T.E. Easler, R.C. Bradt, and R.E. Tressler, "Effects of Oxidation and Oxidation Under Load
       on Strength Distributions of Si3N4," Journal of the American Ceramic Society,
       Vol. 65, pp. 317-320 (1982).
   [2] C.A. Tracy and G.D. Quinn, "Fracture Toughness by the Surface Crack in Flexure (SCF) Method,"
       Ceramic Engineering and Science Proceedings, Vol. 15, pp. 837-845 (1994).
   [3] G. D. Quinn, J. J. Swab, and M. D. Hill, "Fracture Toughness by the Surface Crack in Flexure
       (SCF) Method: New Test Results," Ceramic Engineering and Science Proceedings, Vol. 18 (4),
       pp. 163-172 (1997).




Property Table:

Temperature = 23 °C

Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
                         4.0                      CF           air       Ref. 1; 3.00 g/cm3; E = 240 GPa
--------------------------------------------------------------------------------------------------------
 <5         5            4.7                      SCF          air       Ref. 2; 3.26 g/cm3; E = 248 GPa
--------------------------------------------------------------------------------------------------------
                         6.4                      SCF          air       Ref. 3; 3.29 g/cm3; E = 281 GPa
--------------------------------------------------------------------------------------------------------


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