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PRODUCT PARAMETERS
Description
Introduction to Spherical Alumina Powder
Spherical alumina is a high-purity, high-performance inorganic non-metallic material. It is made of ordinary alumina through a special processing technology and has a regular spherical structure. This material has a wide range of applications in electronic packaging, thermal conductive materials, ceramic products and other fields due to its excellent physical and chemical properties.
Spherical Alumina Powder
Specifications of Spherical Alumina Powder
| Parameter | Description |
| Chemical Formula | Al₂O₃ |
| Purity | ≥99.9% |
| Shape | Spherical |
| Average Particle Size | 1 μm to 500 μm (varies by grade) |
| Bulk Density | 0.5 g/cm³ to 1.0 g/cm³ |
| True Density | 3.95 g/cm³ to 4.00 g/cm³ |
| Specific Surface Area | 1 m²/g to 10 m²/g |
| Tapped Density | 0.8 g/cm³ to 1.2 g/cm³ |
| Moisture Content | ≤0.1% |
| pH Value | 7.0 to 8.5 |
| Thermal Conductivity | 30 W/m·K to 40 W/m·K |
| Melting Point | 2054°C |
| Thermal Expansion Coefficient | 7.2 × 10⁻⁶/°C to 8.0 × 10⁻⁶/°C (at 25°C to 1000°C) |
| Dielectric Constant | 9.0 to 9.5 (at 1 MHz) |
| Dielectric Strength | 15 kV/mm to 20 kV/mm |
| Color | White |
| Form | Powder |
| Flowability | Excellent |
| Packaging | 25 kg/bag or 500 kg/bulk bag |
Characteristics of Spherical Alumina Powder
High purity: The purity of spherical alumina can reach more than 99.9%, which ensures its stability and reliability in precision applications.
Good fluidity: Due to its unique spherical structure, the material has good fluidity and easy processing.
High temperature resistance: Spherical alumina can maintain its physical and chemical properties unchanged at extreme temperatures and is suitable for use in high temperature environments.
Low water absorption: Compared with ordinary alumina, spherical alumina has a lower water absorption rate, which helps to improve the service life and performance stability of the product.
Excellent thermal conductivity: Spherical alumina has a high thermal conductivity and is one of the ideal thermal conductive filling materials.
Application of Spherical Alumina Powder
Electronic packaging: As a heat dissipation filler, it is used for the packaging of electronic components such as LED lights and power modules to improve their heat dissipation efficiency.
Thermal conductive materials: It is used in various scenarios that require efficient heat conduction, such as heat sinks, heat pipes, etc.
Ceramic products: It is used as a raw material for ceramic production, which can significantly improve the mechanical strength and wear resistance of ceramic materials.
Coatings and adhesives: Adding to coatings or adhesives can improve their physical properties, such as increasing hardness and reducing shrinkage.
Catalyst carrier: Due to its high specific surface area and good chemical stability, spherical alumina is also an ideal catalyst carrier material.
Company Profile
Alumina Technology Co., Ltd.! We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.
Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)
Payment Methods
T/T, Western Union, Paypal, Credit Card etc.
Shipment Methods
By air, by sea, by express, as customers request.
Frequently Asked Questions (FAQs)
Q: What are the advantages of spherical alumina compared with other shapes of alumina?
A: Spherical alumina has better fluidity, lower packing density and higher filling rate due to its unique spherical structure. These characteristics make it perform well in multiple application fields.
Q: What is the particle size range of spherical alumina?
A: The particle size of spherical alumina can be customized according to different application scenarios. The common particle size range ranges from a few microns to hundreds of microns.
Q: How to choose the right spherical alumina product?
A: Choosing the right spherical alumina mainly considers the application requirements, including the required particle size, purity grade, thermal conductivity and other factors. It is recommended to communicate with the supplier for specific needs to obtain the best product recommendation.
Q: Is spherical alumina environmentally friendly?
A: Spherical alumina itself is a non-toxic and harmless material. Its production and use process has little impact on the environment, which meets the requirements of modern industry for environmental protection.
Q: What factors affect the price of spherical alumina?
A: The price of spherical alumina is affected by many factors, including but not limited to production costs, market supply and demand conditions, product quality (such as purity, particle size), etc. It is recommended to compare the quotations and services of different suppliers when purchasing.