Silicon nitride plate

Silicon Nitride (Si₃N₄) ceramic plate

No. Property Value Unit
1 Density 3.20–3.30 g/cm³
2 Flexural Strength (Room Temperature) 800–1000 MPa
3 Fracture Toughness 6–8 MPa·m¹/²
4 Vickers Hardness 14–16 GPa
5 Thermal Conductivity (Room Temperature) 25–90 W/m·K
6 Coefficient of Thermal Expansion (25–1000°C) 3.0–3.5 × 10⁻⁶ /°C
7 Maximum Use Temperature (inert atmosphere) 1200–1400 °C
8 Thermal Shock Resistance (ΔT) 600–900 °C
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Silicon Nitride (Si₃N₄) ceramic plate

Silicon Nitride (Si₃N₄) ceramic plate is a premium non-oxide engineering ceramic celebrated for its exceptional strength, high fracture toughness, superior thermal shock resistance, and outstanding wear/corrosion resistance. It outperforms metals and many other ceramics in high-temperature, high-stress, and harsh environments — making it ideal for high-temperature silicon nitride ceramic plates, power electronics substrates, and demanding industrial applications.

Key Product Features

  • Exceptional fracture toughness and high strength retention at elevated temperatures
  • Outstanding thermal shock resistance (ΔT up to 600–900°C depending on grade)
  • Excellent wear resistance, corrosion resistance, and chemical stability
  • Low thermal expansion coefficient combined with good-to-high thermal conductivity
  • High hardness and low porosity for enhanced durability
  • Superior mechanical reliability in extreme conditions

Typical Applications for Silicon Nitride Ceramic Plates

  • Power electronics substrates and high-reliability circuit boards (IGBT, MOSFET modules, EV inverters)
  • Semiconductor equipment components and wafer processing parts requiring thermal stability
  • Automotive engine components (glow plugs, turbocharger rotors, high-temperature sensors)
  • High-temperature bearings, rolling elements, and structural supports
  • Industrial wear-resistant parts (cutting tools, nozzles, seals, armor plates)
  • Aerospace and defense applications demanding lightweight strength and thermal shock resistance

Related Si₃N₄ Ceramic Products

  • Si₃N₄ ceramic substrates (standard & custom sizes for electronics)
  • Si₃N₄ bearing balls, rollers, and hybrid bearings
  • Si₃N₄ structural components (shafts, plungers, valves, nozzles)
  • Si₃N₄ crucibles, ladles, and high-temperature wear parts

FAQ

Q1: How does Si₃N₄ compare to Al₂O₃ (alumina) in thermal shock resistance for ceramic plates?

A: Si₃N₄ is far superior (ΔT ≥600–900°C vs. ~200–300°C for alumina), thanks to its low thermal expansion and high fracture toughness — ideal for high-temperature silicon nitride ceramic substrates.

Q2: What is the typical maximum service temperature for silicon nitride plates?

A: Up to 1200–1400°C in non-oxidizing atmospheres; retains excellent strength well above 1000°C, making it perfect for high-performance Si₃N₄ ceramic plates in demanding environments.

Q3: Is Si₃N₄ suitable for corrosive or high-wear environments?

A: Yes — exceptional resistance to most acids (except HF), alkalis, molten metals, and abrasive conditions. Its hardness and stability make it a top choice for wear-resistant silicon nitride ceramic plates.

Q4: Do you offer custom silicon nitride ceramic substrates or plates?

A: Yes! We provide fully customized Si₃N₄ ceramic plates and silicon nitride substrates — various thicknesses, sizes, surface finishes (e.g., polished), and special grades. Send your drawings for quick quoting and prototyping.

Ready for reliable high-temperature Si₃N₄ ceramic plates, custom silicon nitride substrates for power electronics, or wear-resistant Si₃N₄ plates? Contact us today for quotes, samples, material certifications, and expert technical support! We specialize in advanced ceramic solutions for electronics, automotive, semiconductor, and industrial applications.

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