NAV-7 ( 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]                         
Manufacturer........: Norton Co.          
Material Designation: NAV-7  
Material Form.......: Polycrystal     
Composition.........: Si3N4             
Processing..........: Hot pressed




References:

   [1] S. W. Freiman, A. Williams, J. J. Mecholsky, and R. W. Rice, "Fracture of Si3N4 and SiC"
       Ceramic Microstructures, pp. 824-834 (1976).




Property Table:

Temperature = 23 °C

Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  --------------------------------
[1-3]                                62         AMDCB         air        Major additives/impurities
                                                                           = high Al and high Fe
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