About Aluminum Nitride Ceramics
Aluminum nitride ceramics are one of the advanced ceramic materials that are widely used in the electronics industry because of their excellent thermal conductivity and electrical insulation properties.
Aluminum nitride crystals are covalently bonded compounds with [AIN4] tetrahedra as structural units, with a fibrillated zincite-type structure and a hexagonal crystal system. As a high-temperature resistant material, its single crystal thermal conductivity is almost 5 times that of alumina, and it has good thermal shock resistance, and it can be used in an inert atmosphere at 1350℃.
Aluminum nitride is resistant to attack by molten metals and is stable to acids. Because of its surface exposed to wet air will react to generate a very thin oxide film, using this characteristic, can be used as aluminum, copper, silver, lead and other metals melting crucible and burn casting mold materials. ain ceramics metallization performance is better, can replace the toxic beryllium oxide ceramics in the electronics industry in a wide range of applications.
Chemical formula of aluminum nitride
Aluminum nitride chemical formula for AlN, chemical composition AI 65.81%, N 34.19%. its powder is white or off-white, single crystal colorless and transparent, sublimation decomposition temperature at atmospheric pressure is 2450 ℃.
Thermal conductivity of aluminum nitride ceramics.
Aluminum nitride polycrystalline material thermal conductivity is 70~210 W / (m.k), and single crystal can be as high as 275 W / (m.k) or more, is 5 times that of alumina.
Aluminum Nitride Ceramic Substrates
Aluminum nitride ceramics have high thermal conductivity, low coefficient of expansion, high strength, high temperature resistance, chemical corrosion resistance, high resistivity and low dielectric loss, making them ideal for large-scale integrated circuit heat dissipation substrates and packaging materials.
What are the aluminum nitride ceramic parts?
Aluminum Nitride Ceramic Substrate Surface Polishing Process
Precision polished to a mirror finish
Aluminum Nitride Ceramic Substrate Precision Laser Processing
Precision micro-hole processing with laser equipment
Aluminum Nitride Ceramic Gasket
Non-standard customization of drawings and samples
Aluminum Nitride Ceramic Washers
Customization of various precision ceramic parts
Aluminum Nitride Ceramic Block
Aluminum Nitride Professional Processing Factory
Aluminum Nitride Ceramic Gasket
Ceramic gasket non-standard customization
Aluminum Nitride Ceramic Parts
Customized processing of high-precision ceramic parts
Aluminum Nitride Ceramic Substrates
Non-standard customized laser processing
View MoreAluminum Nitride Ceramic Parts
Performance characteristics of aluminum nitride ceramics
Advantages of Aluminum Nitride Ceramics
Mechanical Properties of Aluminum Nitride Ceramics
| sports event | unit (of measure) | Aluminum Nitride Ceramics | Injection Molded Aluminum Nitride | High thermal conductivity injection molded aluminum nitride |
|---|---|---|---|---|
| color | -- | grizzly | grizzly | grizzly |
| intensity | g/cm³ | 3.3 | 3.3 | 3.3 |
| durometer | GPa | 11 | 11 | 11 |
| compressive strength | MPa | 2100 | 2100 | 2100 |
| bending strength | MPa | 450 | 410 | 300 |
| Fracture toughness | MPa・m1/2 | 3.5 | 2.6 | 2.4 |
| Young's modulus | GPa | 310 | 310 | 310 |
| Poisson's ratio | -- | 0.25 | 0.25 | 0.25 |
Thermal Properties of Aluminum Nitride Ceramics
| sports event | unit (of measure) | Aluminum Nitride Ceramics | Injection Molded Aluminum Nitride | High thermal conductivity injection molded aluminum nitride |
|---|---|---|---|---|
| Maximum operating temperature | ℃ (in inert gas) | 1350 | 1350 | 1350 |
| Thermal conductivity@25℃ | W/(m・K) | ＞170 | ＞170 | ＞200 |
| Coefficient of linear thermal expansion | 40 - 400°C, x 10-6/C | 4.5 | 4.6 | 4.9 |
| specific heat | J/(kg・K) | 720 | 720 | 720 |
| thermal shock resistance | ℃ (into water) | 350 | 350 | 350 |
Electrical Characteristics of Aluminum Nitride Ceramics
| sports event | unit (of measure) | Aluminum Nitride Ceramics | Injection Molded Aluminum Nitride | High thermal conductivity injection molded aluminum nitride |
|---|---|---|---|---|
| dielectric constant | 1MHz | 8.8 | 8.5 | 8.5 |
| electrical strength | kV/mm | ＞15 | ＞15 | ＞15 |
| Volume Resistance@25℃ | Ω・cm | ＞10^14 | ＞10^14 | ＞10^13 |
Note: All the above parameters are typical values of aluminum nitride ceramics, please note that there may be differences due to different batches.
Precautions for the use of aluminum nitride ceramics
Aluminum nitride ceramics undergo surface oxidation in air at 700°C, and even at room temperature, a surface oxide layer of 5-10 nm is detected. This will help protect the material body, but it will also reduce the thermal conductivity of the material surface. In an inert atmosphere, the oxide layer protects the material body at temperatures up to 1350°C, above which the body undergoes significant oxidation. Aluminum nitride ceramics are stable in hydrogen and carbon dioxide atmospheres at temperatures up to 980°C.
In addition, aluminum nitride ceramics react chemically and dissolve slowly with inorganic acids and liquids such as strong bases and water, all of which it cannot be used by direct immersion in such substances. However, aluminum nitride is resistant to most molten salts, including chlorides and cryolite.
What are the uses of aluminum nitride ceramics?
- Heat sinks and heat sinks
- Laser electrical insulators
- Chucks, clamping rings for semiconductor processing equipment
- electrical insulation
- Wafer Handling
- Substrates and insulators for microelectronic and optoelectronic devices
- Electronics Packaging Substrates
- Chip carriers for sensors and detectors
- microchip
- cartridge clip
- Laser Thermal Management Components
- Molten Metal Fixture
- Microwave equipment packaging
Machining manufacturer of aluminum nitride ceramic parts
To Good Ceramics is a professional aluminum nitride ceramics processing manufacturer. Since 2013, we have participated in and supplied more than 3000 kinds of precision ceramic products to hundreds of companies.
We can provide you with ceramic machining, ceramic materials, ceramic casting, ceramic metal encapsulation and surface metallization services, and are committed to providing products and services that meet or exceed our customers' quality requirements.
Aluminum Nitride Ceramics Custom Processing
To Good Ceramics is your Aluminum Nitride ceramics custom fabrication specialist for your advanced ceramic prototyping needs. We are always happy to utilize our years of advanced ceramics experience to advise on materials, designs and applications. If you are looking to purchase aluminum nitride substrates, rods, tubes, or custom machined parts, please contact us and one of our experts will be happy to assist you.
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