Dec 17 2009
Sialon is a reacted mixture of SiN, SiO2, Al2O3 and AlN.
Chemical Properties of Sialon
The chemical formula of Sialons are mentioned in the table below:
| Property |
Value* |
| Chemical Formula |
SiN-SiO2-Al2O3-AlN |
* All properties are at room temperature unless otherwise noted.
Mechanical Properties of Sialon
The mechanical properties of Sialon are mentioned in the table below:
| Property |
Value* |
| Density |
3.1-3.7 gm/cc |
| Hardness |
1600-1800 Knoop |
| Tensile Strength |
28 kpsi |
| Modulus of Elasticity |
46 x 106 psi |
| Flexural Strength |
110 kpsi |
| Compressive Strength |
300-510 kpsi |
| Poisson's Ratio |
0.21 |
| Fracture Toughness |
4-5 MPa m1/2 |
* All properties are at room temperature unless otherwise noted.
Electrical Properties of Sialon
The electrical properties of Sialon are mentioned in the table below:
| Property |
Value* |
| Dielectric Strength |
212 ac V/mil |
| Dielectric Constant |
9.3(@ 1 MHz) |
| Volume Resistivity |
>1014 ohm-cm |
* All properties are at room temperature unless otherwise noted.
Thermal Properties of Sialon
The thermal properties of Sialon are mentioned in the table below:
| Property |
Value* |
| Coefficient of Thermal Expansion |
2.7-6.8 x 10-6/°C |
| Thermal Conductivity |
18-25 W/mK |
| Specific Heat |
0.21 cal/g°C |
| Maximum Working Temperature |
1700°C |
| Shock Resistance |
300°C Diff. |
* All properties are at room temperature unless otherwise noted.
About Insaco
For over 60 years, Insaco has been synonymous with excellence in the development and production of high precision machined parts. As a custom fabricator of ceramic, glass, sapphire, and other hard materials, Insaco specializes in machining parts that often require tolerances measured in millionths of an inch, and wear properties that satisfy even the most demanding applications.
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This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.
For more information on this source, please visit INSACO Inc.