Silicon nitride ceramic rod
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材料及含量
产品特点
1. Flexural strength: 600-800 MPa.
2. Fracture toughness: 5-7 MPa·m½.
3. Thermal conductivity: 20-25 W/m·K.
4. Density: 3.2-3.3 g/cm³ (apparent porosity <0.1%).
5. Resistivity: 10⁶-10⁹ Ω·cm (suitable for cleanroom environments).
产品详情
Silicon Nitride Ceramic Rod Product Introduction:
Silicon nitride ceramic rods are advanced ceramic materials primarily composed of silicon nitride (Si₃N₄), possessing the following significant characteristics:
1. High Strength and High Hardness: Vickers hardness reaches 1400-1600 HV, twice that of high-speed steel, and compressive strength exceeds 1800 MPa.
2. High Temperature Resistance: Can operate stably at high temperatures up to 1200°C, with a thermal shock resistance temperature difference of 800°C.
3. Self-Lubricating Properties: A nanoscale SiO₂ oxide film forms on the surface, resulting in a low friction coefficient of 0.05-0.1.
4. Chemical Stability: Resistant to most acids, bases, and molten metals, with an oxidation temperature threshold as high as 1300°C.
5. Low Thermal Expansion Coefficient: 3.2 × 10⁻⁶/K, close to that of semiconductor chips (Si, SiC), providing good thermal matching.
Application areas
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