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Grade: Reaction Bonded
Composition: Si₃N₄
Form: Rod
Material: Silicon Nitride
Commodity: Ceramics
Reaction Bonded Silicon Nitride (Si₃N₄) Rod exhibits high strength, wear resistance, and remarkable thermal stability, making it an advanced ceramic suitable for demanding environments. Its low density and resistance to oxidation and corrosion under high temperatures make it highly valuable in aerospace, automotive, and power generation industries. Specific applications include turbine components, rolling contact elements, and high-temperature structural supports. Researchers utilize Si₃N₄ rods in tribological studies, high-performance composites, and advanced ceramic testing for fatigue and thermal shock resistance. The rod geometry ensures excellent machinability into precision parts, maintaining both durability and structural performance. Its combination of mechanical strength and chemical inertness ensures vital use in both industrial engineering and scientific research where metals cannot meet performance demands.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
Material Properties for Ceramics
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Fair |
| Acids - dilute | Good |
| Alkalis | Fair |
| Halogens | Good |
| Metals | Fair |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant | 10 |
| Volume resistivity( Ohmcm ) | >10⁷@25 |
Physical Properties
| Element | Value |
|---|---|
| Apparent porosity( % ) | 15-23 |
| Density( gcm⁻³ ) | 2.4 |
Thermal Properties
| Element | Value |
|---|---|
| Upper continuous use temperature( C ) | 1200-1500 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 690@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 10-16@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 3.3@20-1000°C |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 170-220 |
| Hardness - Vickers( kgf mm⁻² ) | 800-1000 |
| Shear strength( MPa ) | 190-240 |
| Tensile strength( MPa ) | 160 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 550-650 |
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