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.
개요 Aluminum Nitride Powder
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.
| 속성 | 가치 |
|---|---|
| 열 전도성 | 170-200 W/mK |
| 전기 저항 | >10ⁱ⁰ Ω·cm |
| 녹는점 | 2,200°C |
| 밀도 | 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.
| 모델 이름 | Key Feature | Primary Application |
| Grade A-100 | High purity, low oxygen | Electronic substrates |
| ThermaAlN-150 | Superior thermal conductivity | Heat dissipation |
| NanoAlN-50 | Nano-sized particles | Coatings, composites |
| EcoAlN-200 | Sustainable production | General industrial use |
| UltraFine-300 | Ultra-fine grain | Precision electronics |
| AlN-XTreme | Enhanced toughness | Structural ceramics |
| SuperPure-500 | 초고순도 | Research, specialized electronics |
| IndustrialAlN-700 | 비용 효율적 | Bulk industrial applications |
| PowderFlex-400 | Versatile grain sizes | 다양한 애플리케이션 |
| 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.
| 요소 | 백분율 |
| 알루미늄(Al) | 50-55% |
| 질소(N) | 45-50% |
| 산소(O) | 0.5% |
| 탄소(C) | 0.2% |
Manufacturers achieve high purity through processes such as carbothermal reduction or direct nitridation.
Characteristics of AlN Powder
물리적 속성
- 밀도: 3.26 g/cm³
- Color: Light gray or off-white
- 입자 크기: Ranges from nanometers to micrometers
열 속성
- Thermal Expansion Coefficient: 4.3 × 10⁻⁶ /°C
- 열 전도성: 170-200 W/mK
Electrical Properties
- Dielectric Constant: 8.6 at 1 MHz
- 전기 저항: >10ⁱ⁰ Ω·cm
화학적 특성
- Chemically inert under most conditions
- Resistant to corrosion and oxidation
| 속성 | 설명 |
| 밀도 | 3.26 g/cm³ |
| 열팽창 | Low, ideal for stable structures |
| Chemical Stability | High resistance to oxidation |
| 전기 저항 | Excellent insulation properties |
Applications of AlN Powder
Aluminum Nitride powder is widely used in various industries. Here are some of its prominent applications:
| 산업 | 애플리케이션 |
| 전자 제품 | Substrates, heat sinks, thermal interface materials |
| 세라믹 | Structural components, high-temperature coatings |
| 항공우주 | Thermal management systems |
| 에너지 | LED technology, photovoltaic systems |
| 야금학 | Crucibles, metal refining aids |
| 의료 기기 | Bio-compatible ceramics |
사양, 크기, 등급 및 표준
AlN powder comes in various sizes and grades to suit different applications. Below is a detailed comparison:
| 사양 | Range/Value |
| 입자 크기 | 0.1-10 micrometers |
| 순도 수준 | 95%-99.99% |
| 열 전도성 | 170-200 W/mK |
| 산소 함량 | 0.5% |
| 표준 | ASTM C1685, ISO 9001 |
공급업체 및 가격
AlN powder is available from various global suppliers. Pricing depends on purity, particle size, and order quantity.
| 공급업체 | 제품 | 가격(USD/kg) | MOQ |
| Materion | Grade A-100 | $150-$200 | 1kg |
| Advanced Ceramics | ThermaAlN-150 | $180-$250 | 5kg |
| NanoMaterials Inc. | NanoAlN-50 | $300-$400 | 1kg |
| GreenTech Materials | EcoAlN-200 | $120-$170 | 10kg |
Advantages and Limitations of AlN Powder
장점
- High thermal conductivity for efficient heat dissipation.
- Excellent electrical insulation properties.
- Chemically stable and resistant to oxidation.
제한 사항
- Relatively high production costs.
- Brittle nature limits mechanical applications.
- Susceptibility to hydrolysis under specific conditions.
| 측면 | 장점 | 제한 사항 |
| 열 전도성 | 높음 | None |
| Electrical Properties | Excellent insulation | Not conductive |
| 비용 | High-end applications justify cost | Expensive for general use |
자주 묻는 질문
| 질문 | 답변 |
| 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. |
This comprehensive guide covers everything you need to know about Aluminum Nitride powder. Whether you’re selecting the right model for a specific application or comparing properties and costs, this article ensures you’re well-informed. Got questions? Dive into the FAQ or reach out to your supplier for expert advice!