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Aluminum oxide (Al₂O₃) ceramic granular powder offers exceptional purity, optimized particle distribution, and superior thermal stability. Designed for advanced ceramic manufacturing, it ensures reliable sintering performance, extended durability, and high-precision material consistency.
Product Overview:
Aluminum oxide ceramic granular powder is made from α-Al₂O₃ using a spray-drying granulation process, resulting in excellent sphericity and loose bulk density. This granular powder offers good flowability and high green strength, making it ideal for shaping ceramic materials and producing high-performance ceramic products. Its low shrinkage and high density make it an important raw material for manufacturing high-quality ceramic materials.
Product Features:
- Good Formability:Less likely to crack, easy to process.
- High Loose Bulk Density:Good flowability, easy to handle and process.
- High Green Strength:Ensures the durability of ceramic products.
- Low Shrinkage:Maintains stable dimensions during the sintering process.
- Low Firing Temperature:Improves production efficiency.
- High Density:Enhances the mechanical properties of the final product.
Applications:
- Ceramics Industry:Used to produce a variety of high-performance aluminum oxide ceramic products, such as refractory materials and structural ceramics.
- Electronic Ceramics:Serves as a ceramic substrate material for electronic components.
- Metallurgy:Used to manufacture high-temperature wear-resistant components in the metallurgical process.
- Chemical Industry:Used as a catalyst support and high-temperature material for chemical reactors.
- Aerospace:Applied in high-performance ceramic components for aerospace equipment.
| Property | Unit | ≥95 | ≥99 | ≥99.5 | ≥99.8 |
| Bulk Density | g/cm³ | 3.7 | 3.8-3.85 | 3.85 | 3.85 |
| Hardness | MPa≥ | 86 | 88 | 88 | 88 |
| Bending Strength | HRA≥ | 300 | 350 | 400 | 400 |
| Max Service Temp | ℃ | 1500 | 1500 | 1500 | 1500 |
| Linear Expansion Coefficient | ×10⁻⁶/℃ | 7.5 | 8.2 | 8.2 | 8.2 |
| Dielectric Constant | tr (20℃, 1MHz) | 9 | 9.2 | 9.2 | 9.2 |
| Dielectric Loss | tanδ×10⁻⁴, 1MHz | 3 | 2 | 2 | 2 |
| Volume Resistivity | cm (20℃) | 10¹³ | 10¹⁴ | 10¹⁴ | 10¹⁴ |
| Breakdown Strength | kV/mm, DC≥ | 20 | 20 | 20 | 20 |
| Acid Resistance | mg/cm²≤ | 0.7 | 0.7 | 0.7 | 0.7 |
| Alkali Resistance | mg/cm²≤ | 0.2 | 0.1 | 0.1 | 0.1 |
| Wear Resistance | g/cm²≤ | 0.2 | 0.1 | 0.1 | 0.1 |
| Compressive Strength | MPa≥ | 2500 | 2500 | 2500 | 2800 |
| Flexural Strength | MPa≥ | 200 | 350 | 350 | 350 |
| Elastic Modulus | GPa | 300 | 350 | 350 | 350 |
| Poisson's Ratio | Lateral Strain Coefficient | 0.2 | 0.22 | 0.22 | 0.22 |
| Thermal Conductivity | W/m·K (20℃) | 20 | 25 | 25 | 25 |
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