Sialon ( Si6-xAlxOxN8-x )
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] [Ref. 2] [Ref. 3]
Manufacturer........: In laboratory In laboratory In laboratory
Material Designation: sialon sialon sialon
Material Form.......: polycrystal polycrystal polycrystal
Composition.........: Si6-xAlxOxN8-x Si6-xAlxOxN8-x Si6-xAlxOxN8-x
(mass fraction) + 1 % Y2O3
Processing..........: hot isostatic pressed hot isostatic pressed hot pressed
and sintered and sintered
[Ref. 4] [Ref. 5]
Manufacturer........: In laboratory In laboratory
Material Designation: sialon (x-phase) sialon
Material Form.......: polycrystal polycrystal
Composition.........: Si6-xAlxOxN8-x Si6-xAlxOxN8-x
Processing..........: sintered sintered
References:
[1] T. Ekstrom and P.O. Olsson, "Beta-Sialon Ceramics Prepared at 1700 °C by Hot Isostatic
Pressing," Journal of the American Ceramic Society, Vol. 72, pp. 1722-1724 (1989).
[2] T. Ekstrom, P.O. Kall, M. Nygren, and P.O. Olsson, "Dense Single-Phase Beta-Sialon Ceramics
by Glass-Encapsulated Hot Isostatic Pressing," Journal of Materials Science, Vol. 24,
pp. 1853-1862 (1989).
[3] K. Kishi, S. Umebayashi, and E. Tani, "Influence of Microstructure on Strength and Fracture
Toughness of Beta-Sialon," Journal of Materials Science, Vol. 25, pp. 2780-2784 (1990).
[4] C. C. Anya and A. Hendry, "Hardness, Indentation Fracture Toughness, and Compositional
Formula of X-Phase Sialon," Journal of Materials Science, Vol. 29, PP. 527-533 (1994).
[5] J. Piekarczyk, J. Lis, and J. Bialoskorski, "Elastic Properties, Hardness, and Indentation
Fracture Toughness of beta-Sialons," Key Engineering Materials, Vol. 89-91, pp. 541-546 (1994).
Property Table:
Temperature = 23 °C
Grain Porosity Fracture Fracture Measurement Measurement Comments
Size Toughness Energy Method Environment
[µm] [%] [MPa·m1/2] [J/m2]
------ -------- ------------ --------- ----------- ----------- --------------------------------
3.05 ICS air Ref. 1; 0.1 = x of Alx; 3.16 g/cm3
2.90 ICS 0.5 = x of Alx; 3.14 g/cm3
2.75 ICS 1.0 = x of Alx; 3.10 g/cm3
2.70 ICS 1.4 = x of Alx; 3.09 g/cm3
2.65 ICS 1.75 = x of Alx; 3.06 g/cm3
3.15 ICS 2.0 = x of Alx; 3.14 g/cm3
3.75 ICS 2.25 = x of Alx; 3.29 g/cm3
--------------------------------------------------------------------------------------------------------
3.80 ICS air Ref. 2; 0.25 = x of Alx; 3.18 g/cm3
3.72 ICS 0.35 = x of Alx; 3.17 g/cm3
3.52 ICS 0.50 = x of Alx; 3.16 g/cm3
3.44 ICS 0.75 = x of Alx; 3.16 g/cm3
3.26 ICS 1.50 = x of Alx; 3.13 g/cm3
2.99 ICS 2.00 = x of Alx; 3.11 g/cm3
2.79 ICS 3.00 = x of Alx; 3.08 g/cm3
3.00 ICS 4.00 = x of Alx; 3.08 g/cm3
3.18 ICS 4.20 = x of Alx; 3.14 g/cm3
3.66 ICS 4.50 = x of Alx; 3.22 g/cm3
--------------------------------------------------------------------------------------------------------
3.2 ICS air Ref. 3; 0.5 = x of Alx; 3.14 g/cm3
--------------------------------------------------------------------------------------------------------
1.6 3.3 ICS air Ref. 4; density = 3.01 g/cm3
2.0 3.5 ICS density = 3.11 g/cm3
2.7 3.1 ICS density = 3.01 g/cm3
--------------------------------------------------------------------------------------------------------
4.65 87.9 ICS air Ref. 5; 1 = x of Alx; 3.09 g/cm3
H/E = 0.055
3.42 55.4 ICS 2 = x of Alx; 3.05 g/cm3
H/E = 0.054
3.38 56.0 ICS 3 = x of Alx; 3.06 g/cm3
H/E = 0.058
3.29 60.5 ICS 4 = x of Alx; 3.00 g/cm3
H/E = 0.065
--------------------------------------------------------------------------------------------------------
|
