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Alumina Ceramic Support / Bracket Manufacturer & Supplier - JiFeng-Keramik

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Alumina Ceramic Support / Bracket

Alumina ceramic brackets deliver ultra-high temperature stability, extreme environmental resistance, and micron-level precision machining. They are widely used in high-temperature furnaces, Halbleiterausrüstung, new energy devices, and precision instrumentation as an ideal replacement for metal and plastic supports.

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Material Properties & Process Advantages

Ultra-High Temperature Stability

  • Long-term working temperature: 1600°C (short-term up to 1800°C)
  • Thermal expansion coefficient: 6.5×10⁻⁶/°C (ideal for metal/ceramic sealing)
  • Thermal shock resistance: ΔT=800°C water cooling > 50 cycles without cracking
  • Porosität: < 0.5% (high-density sintering process)

Extreme Environment Resistance

  • Corrosion resistance: Immersed in 98% H₂SO₄ / 40% NaOH for 1000h; weight loss < 0.02%
  • Plasma erosion resistance: Argon ion bombardment (500W); etching rate ≤ 0.1μm/h

Precision Machining Capability

  • Dimensional tolerance: ±0,005 mm (CNC grinding)
  • Minimum hole diameter: 0.1 mm (depth-to-diameter ratio up to 20:1)
  • Complex structures: Multi-step, special-shaped holes, internal threads (laser-assisted sintering)
Parameter99.5% Aluminiumoxidkeramik316L Stainless SteelPEEK Engineering Plastic
Max. Arbeitstemp1600°C800°C (oxidation failure)250°C (thermal deformation)
Wärmeleitfähigkeit30 W/(m·K)15 W/(m·K)0.25 W/(m·K)
Volumenwiderstand>10¹⁴ Ω·cm (insulator)7.4×10⁻⁷ Ω·cm (conductor)10¹⁶ Ω·cm (insulator)
Dichte3.9 g/cm³8.0 g/cm³1.3 g/cm³

 

 

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