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PRODUCT PARAMETERS
Description
Aluminum nitride (AlN) ceramic discs are advanced ceramic components that have attracted much attention due to their excellent thermal, electrical and mechanical properties. These ceramic discs are used in a wide variety of industries, especially where high-performance materials are required for efficient heat dissipation, insulation or structural integrity.
Characteristic of Aluminum Nitride Disk
High thermal conductivity: One of the most notable features of aluminum nitride ceramic disks is their high thermal conductivity, which can reach 170-220 W/m-K. This makes it superior to other ceramics such as alumina (Al2O3) in applications that require effective thermal management.
2. Excellent electrical insulation: Although AlN has good thermal conductivity, it still has excellent electrical insulation properties, so it is suitable for electronic packaging and semiconductor applications that require extremely high dielectric strength.
3. Low coefficient of thermal expansion (CTE): Aluminum nitride has a relatively low coefficient of thermal expansion, close to that of silicon, thus minimizing thermal mismatch stress when these materials are used together in electronic devices.
4. Chemical stability: Aluminum nitride ceramic discs have good chemical resistance, including resistance to molten metal and various acids and alkalis, thus improving their durability in harsh environments.
Specification of Aluminum Nitride Disk:
| Property | Typical Specification |
| Material Composition | AlN (Aluminum Nitride) |
| Thermal Conductivity | 170-220 W/m·K |
| Coefficient of Thermal Expansion | ~4.5-5.0 ppm/°C (similar to silicon) |
| Dielectric Strength | >20 kV/mm |
| Dielectric Constant (1 MHz) | ~8.4 – 9.6 |
| Volume Resistivity | >10^14 Ω·cm at 25°C |
| Mechanical Strength (Bending) | ~350-450 MPa |
| Hardness (Vickers) | ~12-14 GPa |
| Density | ~3.26 g/cm³ |
| Porosity | <1% |
| Operating Temperature Range | -269°C to +1000°C |
| Chemical Stability | Excellent resistance to acids, alkalis, and molten metals |
| Surface Finish | Can be polished to optical quality or left with a machined finish |
| Dimensions | Customizable; common diameters range from a few millimeters to several centimeters |
| Thickness | Customizable; typically ranges from 0.5 mm to several millimeters |
Applications of Aluminum Nitride Disk:
Electronics and Semiconductors
1. Substrate: Aluminum nitride ceramic sheets can be used as substrates for mounting electronic components in power modules, LEDs, laser diodes and radio frequency equipment. Their high thermal conductivity effectively dissipates heat away from active components, improving device performance and longevity.
2. Heat sink: Due to its excellent thermal management capabilities, AlN ceramic discs can be used as a heat sink to cool semiconductors and other heat-sensitive components, ensuring optimal operating temperatures.
3. Insulator: In semiconductor manufacturing, aluminum nitride ceramic sheets serve as insulators, providing electrical isolation while promoting efficient heat transfer.
Automotive industry
1. Sensor protection: In automotive applications, AlN disks protect sensors from harsh environmental conditions, such as temperature sensors in exhaust systems or pressure sensors in fuel lines.
2. Ignition elements: They are used in ignition systems and must withstand extreme temperatures and provide reliable insulation.
telecommunications
1. Microwave equipment: Aluminum nitride ceramic disks are used in microwave equipment due to their low dielectric loss and excellent thermal stability, which are critical to maintaining signal integrity at high frequencies.
2. Satellite Communication Systems: They are used in satellite components due to their light weight and ability to withstand extreme heat, thus increasing the reliability of space-based communication equipment.
medical equipment
1. Biocompatible implants: Some medical implants use aluminum nitride ceramics because they are biocompatible and corrosion-resistant, making them suitable for long-term implantation into the human body.
2. Diagnostic equipment: In diagnostic imaging and other medical equipment, aluminum nitride disks have stable thermal and electrical properties that help provide accurate and consistent performance.
Other applications
Optoelectronics: Due to its transparency at specific wavelengths, it can be used in optoelectronic devices such as optical windows and lenses.
Laser technology: As a substrate or component in laser technology, it benefits from its thermal conductivity and mechanical strength.
High Temperature Furnaces: Used as components of furnaces and kilns utilizing their thermal stability and resistance to chemical attack.
Company Profile
Advanced Ceramics founded on October 17, 2012, is a high-tech enterprise committed to the research and development, production, processing, sales and technical services of ceramic relative materials and products.. Since its establishment in 2012, 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 Aluminum Nitride Ceramic Products, Boron Carbide Ceramic Products, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, Quartz Products, etc. 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.
FAQs of Aluminum Nitride Disk:
Q1: What is Aluminum Nitride (AlN)?
A1: Aluminum Nitride is a ceramic material known for its excellent thermal conductivity, electrical insulation properties, and low coefficient of thermal expansion. It’s widely used in electronics, semiconductors, and other high-performance applications.
Q2: What is the typical thermal conductivity of AlN ceramic disk plates? A2: The thermal conductivity of AlN ceramic disk plates can range from 170 to 220 W/m·K, depending on purity and manufacturing processes.
Q3: Where are AlN ceramic disk plates commonly used?
A3: Common applications include substrates in power modules, LEDs, laser diodes, RF devices, automotive sensors, ignition components, microwave devices, satellite communication systems, medical implants, and diagnostic equipment.
Q4: Can AlN ceramic disk plates be customized?
A4: Yes, AlN ceramic disk plates can often be customized in terms of dimensions, thickness, and surface finish to meet specific application requirements.
Q5: How are AlN ceramic disk plates manufactured?
A5: Manufacturing involves several steps including powder synthesis, forming, sintering at high temperatures, and machining. The quality of the final product depends heavily on the purity of raw materials and control over processing parameters.
