High-Purity Alumina Crucibles — Properties and Applications

High-purity alumina crucibles are indispensable tools for high-temperature experiments and industrial production. With excellent high-temperature resistance, chemical stability, and thermal shock resistance, alumina crucibles play a vital role in materials science, metallurgy, electronics, and ceramics.

Material Properties

Zibo Fovo Advanced Material Co., Ltd manufactures high-purity alumina crucibles with Al₂O₃ content exceeding 99%, offering the following outstanding characteristics:

• Ultra-high purity — Minimal impurity content, preventing contamination of samples or melts
• High-temperature resistance — Maximum continuous use temperature up to 1750°C–1800°C
• Excellent thermal shock resistance — Withstands rapid heating and cooling cycles
• Chemical inertness — Non-reactive with most molten metals, fluxes, and acids
• High density — 3.85–3.90 g/cm³, low porosity, high mechanical strength

Key Application Areas

• Rare earth and precious metal melting — Crucibles for neodymium, dysprosium, terbium, platinum, gold, and silver
• Advanced ceramics and electronic materials — Sintering boats and protection tubes for silicon nitride, silicon carbide, piezoelectric ceramics, barium titanate, and zirconia
• Polycrystalline mullite fiber production — High-temperature boats and collection devices
• Laboratory thermal analysis — Sample boats and crucibles for TGA (Thermogravimetric Analysis), DSC (Differential Scanning Calorimetry), and other thermal analysis instruments

Standard Specifications

Alumina crucibles are available in a wide range of standard capacities from 3ml to 500ml, with custom sizes and shapes (cylindrical, conical, with lid) available upon request. Alumina tubes can also be custom-made with diameters and lengths up to 2000mm to meet specific application needs.

With high purity, excellent temperature resistance, and consistent batch-to-batch quality, FOVO Thermal alumina crucibles are trusted by research institutes, materials processors, and precious metal refining operations worldwide.

For inquiries or custom orders, please contact us.