High Mechanical Strength Alumina Ceramic Pads For Frequency Converters In Industrial Automation
Alumina ceramic thermal pads are high-performance thermally conductive and electrically insulating materials made primarily from high-purity aluminum oxide (Al₂O₃). Designed specifically for electronic cooling applications, these ceramic pads offer excellent thermal conductivity, electrical insulation, and mechanical strength. Their unique microstructure makes them an ideal alternative to traditional plastic thermal pads and metal heat sinks.
Applications
-
Power Electronics: IGBT modules, power transistors, rectifiers
-
LED Lighting Systems: Heat dissipation for high-power LED chips
-
New Energy Vehicles: Battery management systems, motor controllers
-
Communication Equipment: 5G base stations, RF power amplifiers
-
Industrial Automation: Frequency converters, servo drives
-
Consumer Electronics: High-end CPU/GPU cooling solutions
Key Advantages
-
Superior Thermal Conductivity: Thermal conductivity of 20-30 W/m·K, far exceeding standard plastic pads
-
Excellent Electrical Insulation: Breakdown voltage >10 kV/mm, ensuring device safety
-
High-Temperature Stability: Operating range from -50°C to 500°C without deformation or performance degradation
-
Chemical Inertness: Resistant to acids, alkalis, and oxidation, ensuring long service life
-
High Mechanical Strength: Compressive strength >200 MPa, resistant to breakage during installation
-
Eco-Friendly & Non-Toxic: Compliant with RoHS standards, free of heavy metals and hazardous substances
Technical Specifications
| Parameter | Unit | Typical Value | Test Standard |
| Material Purity | % | ≥96% Al₂O₃ | ASTM D2442 |
| Thermal Conductivity | W/m·K | 25±2 | ASTM D5470 |
| Breakdown Voltage | kV/mm | ≥10 | IEC 60243 |
| Volume Resistivity | Ω·cm | ≥10¹⁴ | ASTM D257 |
| Flexural Strength | MPa | ≥300 | ISO 14704 |
| CTE (Coefficient of Thermal Expansion) | ×10⁻⁶/°C | 7.2 | ASTM E228 |
| Density | g/cm³ | 3.7±0.1 | ASTM B962 |
| Surface Roughness | μm | Ra≤0.8 | ISO 4287 |
Manufacturing Process
-
Raw Material Preparation: High-purity alumina powder with sintering additives
-
Forming Process: Dry pressing or tape casting to form green bodies
-
Sintering: Precision sintering at 1600-1800°C
-
Precision Machining: CNC processing to achieve required dimensions and surface finish
-
Surface Treatment: Optional polishing or coating for enhanced performance
-
Quality Inspection: Full dimensional and performance testing
-
Cleaning & Packaging: Ultrasonic cleaning and vacuum sealing
Installation Guidelines
-
Surface Preparation: Clean contact surfaces to remove oil and dust
-
Proper Mounting: Apply even pressure to avoid localized stress
-
Torque Control: Use a torque wrench with recommended tightening values
-
Interface Treatment: Apply thermal grease to minimize contact thermal resistance
-
Periodic Inspection: Check pad condition every 6-12 months
-
Replacement Criteria: Replace if cracks, wear, or performance degradation occurs
After-Sales Service
-
Free replacement for non-human damage
-
Custom solutions available
-
Regular customer follow-ups
-
Performance monitoring services
Frequently Asked Questions (FAQ)
Q: How does alumina ceramic compare to silicone thermal pads?
A: Alumina offers higher thermal conductivity and temperature resistance, making it suitable for high-power applications, while silicone pads are softer for irregular surfaces.
Q: How to select the right thickness?
A: Depends on cooling requirements and assembly space; common thicknesses are 0.5-3mm. Consult our engineers for guidance.
Q: Can the pad be reused?
A: Not recommended—removal may affect flatness and thermal performance.
Q: Is thermal grease necessary?
A: Optional for precision-machined surfaces, but a thin layer improves heat transfer.
Q: What is the maximum pressure tolerance?
A: Compressive strength >200 MPa, but installation pressure should not exceed 10 MPa to avoid cracking.
Product Tags:
|
|
High Mechanical Strength Alumina Ceramic Pads For Frequency Converters In Industrial Automation Images
|
