Aluminum Nitride (AlN) powder is a versatile material known for its exceptional thermal and electrical properties. Its applications span across electronics, metallurgy, and ceramics, making it a critical component in modern technology. This guide provides an in-depth overview of AlN powder, from its composition and characteristics to its various applications and advantages. We’ll also compare different models, explore the pros and cons, and answer frequently asked questions.
概要 窒化アルミニウムパウダー
Aluminum Nitride (AlN) is a ceramic material with unique properties that set it apart from other compounds. Known for its high thermal conductivity, excellent electrical insulation, and stability under extreme conditions, AlN powder is indispensable in industries such as semiconductors, aerospace, and energy.
Key Features of AlN Powder
- High Thermal Conductivity: Efficient heat dissipation.
- Electrical Insulation: Ideal for electronic devices.
- Chemical Stability: Resistant to corrosion and oxidation.
- Wide Bandgap: Suitable for high-power electronic applications.
| プロパティ | 価値 |
|---|---|
| 熱伝導率 | 170-200 W/mK |
| 電気抵抗率 | >10ⁱ⁰ Ω·cm |
| 融点 | 2,200°C |
| 密度 | 3.26 g/cm³ |
| Crystal Structure | Wurtzite |
Types and Models of AlN Powder
There are various models of AlN powder tailored for specific applications. Below is a list of popular models with descriptions:
- Grade A-100: High-purity powder with low oxygen content, ideal for high-performance electronic substrates.
- ThermaAlN-150: Designed for applications requiring superior thermal conductivity.
- NanoAlN-50: Nano-sized particles for advanced coatings and composites.
- EcoAlN-200: Environmentally friendly option with sustainable production methods.
- UltraFine-300: Ultra-fine powder for precision applications in semiconductors.
- AlN-XTreme: Enhanced toughness for structural ceramics.
- SuperPure-500: Ultra-high purity for research and specialized uses.
- IndustrialAlN-700: Cost-effective option for bulk applications in general industries.
- PowderFlex-400: Flexible grain sizes for diverse applications.
- HeatSinkAlN-800: Specifically engineered for heat sink and thermal management applications.
| モデル名 | Key Feature | Primary Application |
| Grade A-100 | High purity, low oxygen | Electronic substrates |
| ThermaAlN-150 | Superior thermal conductivity | 放熱 |
| NanoAlN-50 | Nano-sized particles | Coatings, composites |
| EcoAlN-200 | Sustainable production | 一般産業用 |
| UltraFine-300 | Ultra-fine grain | Precision electronics |
| AlN-XTreme | Enhanced toughness | Structural ceramics |
| SuperPure-500 | Ultra-high purity | Research, specialized electronics |
| IndustrialAlN-700 | 費用対効果 | Bulk industrial applications |
| PowderFlex-400 | Versatile grain sizes | Diverse applications |
| HeatSinkAlN-800 | Optimized for heat sinks | Thermal management |
Composition of AlN Powder
Aluminum Nitride powder is primarily composed of aluminum (Al) and nitrogen (N). The composition often includes trace impurities such as oxygen or carbon, depending on the production process.
| エレメント | Percentage |
| アルミニウム（Al） | 50-55% |
| 窒素（N） | 45-50% |
| 酸素 (O) | <0.5% |
| カーボン（C） | <0.2% |
Manufacturers achieve high purity through processes such as carbothermal reduction or direct nitridation.
Characteristics of AlN Powder
物理的性質
- 密度が高い： 3.26 g/cm³
- Color: Light gray or off-white
- 粒子径： Ranges from nanometers to micrometers
熱特性
- Thermal Expansion Coefficient: 4.3 × 10⁻⁶ /°C
- Thermal Conductivity: 170-200 W/mK
Electrical Properties
- Dielectric Constant: 8.6 at 1 MHz
- Electrical Resistivity: >10ⁱ⁰ Ω·cm
化学的性質
- Chemically inert under most conditions
- Resistant to corrosion and oxidation
| プロパティ | 説明 |
| 密度 | 3.26 g/cm³ |
| 熱膨張 | Low, ideal for stable structures |
| Chemical Stability | High resistance to oxidation |
| 電気抵抗率 | Excellent insulation properties |
Applications of AlN Powder
Aluminum Nitride powder is widely used in various industries. Here are some of its prominent applications:
| 産業 | 申し込み |
| エレクトロニクス | Substrates, heat sinks, thermal interface materials |
| セラミックス | Structural components, high-temperature coatings |
| 航空宇宙 | Thermal management systems |
| エネルギー | LED technology, photovoltaic systems |
| 冶金学 | Crucibles, metal refining aids |
| 医療機器 | Bio-compatible ceramics |
仕様、サイズ、等級、規格
AlN powder comes in various sizes and grades to suit different applications. Below is a detailed comparison:
| 仕様 | Range/Value |
| 粒子サイズ | 0.1-10 micrometers |
| 純度レベル | 95%-99.99% |
| 熱伝導率 | 170-200 W/mK |
| 酸素含有量 | <0.5% |
| 規格 | ASTM C1685, ISO 9001 |
サプライヤーと価格
AlN powder is available from various global suppliers. Pricing depends on purity, particle size, and order quantity.
| サプライヤー | 製品 | 価格(USD/kg) | MOQ |
| Materion | Grade A-100 | $150-$200 | 1 kg |
| Advanced Ceramics | ThermaAlN-150 | $180-$250 | 5 kg |
| NanoMaterials Inc. | NanoAlN-50 | $300-$400 | 1 kg |
| GreenTech Materials | EcoAlN-200 | $120-$170 | 10キロ |
Advantages and Limitations of AlN Powder
メリット
- High thermal conductivity for efficient heat dissipation.
- Excellent electrical insulation properties.
- Chemically stable and resistant to oxidation.
制限事項
- Relatively high production costs.
- Brittle nature limits mechanical applications.
- Susceptibility to hydrolysis under specific conditions.
| アスペクト | メリット | 制限事項 |
| 熱伝導率 | 高い | なし |
| Electrical Properties | Excellent insulation | Not conductive |
| コスト | High-end applications justify cost | Expensive for general use |
よくある質問
| 質問 | 回答 |
| What is AlN powder used for? | It’s used in electronics, ceramics, aerospace, energy, and medical industries. |
| Why is AlN powder expensive? | The high cost is due to complex production processes and high purity levels. |
| How is AlN powder produced? | It’s typically made through carbothermal reduction or direct nitridation. |
| Can AlN powder conduct electricity? | No, it’s an excellent electrical insulator. |
| Is AlN environmentally friendly? | Yes, especially eco-friendly grades like EcoAlN-200. |
