Description

β-Aluminium Oxide (β-Al₂O₃) is a high-temperature polymorph of alumina, distinguished by its unique crystal structure and ionic conductivity properties. This material is critical for applications requiring exceptional thermal stability, electrical insulation, and chemical inertness. It serves as an essential component in advanced ceramics, solid-state electrolytes, and high-performance refractory materials for industries including energy storage, electronics, and metallurgy.

Application

• Solid Electrolytes: Key material in sodium-sulfur (Na-S) and sodium-beta alumina batteries for energy storage systems.
• Advanced Ceramics: Used in the manufacture of wear-resistant components, cutting tools, and high-temperature insulators.
• Refractory Materials: Serves as a high-purity aggregate in linings for furnaces and kilns due to its excellent thermal shock resistance.
• Catalyst Supports: Provides a stable, high-surface-area substrate for various industrial catalysts.
• Electronic Substrates & Insulators: Utilized in microelectronics and sensor applications for its electrical insulation properties.
• Abrasive & Polishing Compounds: A component in precision polishing slurries for semiconductors and optical glasses.
• Protective Coatings: Applied as a thermal barrier or corrosion-resistant coating on metal substrates.
• Research & Development: Used in material science research for developing new ionic conductors and ceramic composites.

Basic Information

Product Name	β-Aluminium Oxide
CAS No.	12522-88-2
Molecular Formula	Al₂O₃
Molecular Weight	101.96 g/mol
Synonyms	Beta Alumina; β-Alumina; β-Al₂O₃; Sodium Beta Alumina; Beta Aluminum Oxide; Aluminium Oxide, beta phase; β-Alumina solid electrolyte; Disodium oxide dialuminum
EINECS	235-692-6

Quality Control

Our β-Aluminium Oxide is manufactured under a strict quality management system. Each batch undergoes comprehensive analysis to ensure it meets precise specifications for phase purity, particle size distribution, and ionic conductivity. Certificates of Analysis (COA) documenting key parameters are available upon request. We can supply grades tailored to specific industrial standards, including those for battery and ceramic applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture. Isolate from strong acids and strong alkalis.

Specification

Item	Specification
Appearance	White to off-white powder
Phase Purity (β-Al₂O₃)	≥ 99.0%
Identification (XRD)	Conforms to β-Al₂O₃ structure
Assay (Al₂O₃ content)	≥ 98.5%
Sodium Oxide (Na₂O) Content	1.0 - 1.5% (typical for β-phase)
Loss on Ignition (LOI)	≤ 1.0%
Particle Size (D50)	1-10 µm (customizable)
Specific Surface Area (BET)	5-15 m²/g
Bulk Density	0.5-1.0 g/cm³
Ionic Conductivity (at 300°C)	≥ 0.01 S/cm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.