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Puwei Ceramic specializes in manufacturing high-performance ceramic insulating substrates specifically engineered for thermoelectric module applications. Our advanced alumina ceramic substrates provide essential electrical insulation, thermal management, and mechanical support for thermoelectric elements, ensuring optimal performance in energy conversion systems.
High-Purity Alumina Ceramic Substrates for Advanced Thermoelectric Applications
Our alumina substrates provide outstanding electrical insulation with volume resistivity exceeding 10¹⁴ Ω·cm, ensuring complete electrical isolation between thermoelectric elements and preventing current leakage that could compromise module efficiency in microelectronics packaging applications.
With thermal conductivity ranging from 20-30 W/m·K, our substrates efficiently transfer heat to and from thermoelectric elements while maintaining temperature gradients essential for effective thermoelectric conversion in thermoelectric cooling assemblies and power generation systems.
The coefficient of thermal expansion (7.2-8.4 × 10⁻⁶/°C) is carefully engineered to match common thermoelectric materials, minimizing thermal stress and preventing delamination or cracking during temperature cycling in sensor packaging and precision applications.
Exceptional flexural strength (>300 MPa) and compressive strength (>2000 MPa) provide robust mechanical support for fragile thermoelectric elements, ensuring module integrity under operational stresses in demanding industrial environments.
Highly resistant to chemical attack and oxidation, our substrates maintain performance in harsh environments and at elevated temperatures where organic insulators would degrade, making them ideal for power devices and automotive applications.
Advanced manufacturing techniques ensure precise dimensional control and surface flatness, critical for maintaining uniform contact pressure across all thermoelectric elements in the module and supporting hybrid micro circuits integration.
Collaborate with our engineering team to select optimal substrate purity, thickness, and surface finish for your specific thermoelectric materials and application requirements, including compatibility with thick film printed circuit technologies.
Choose between standard 96% alumina or high-purity 99.6% alumina ceramic substrate based on thermal and electrical performance requirements for your thermoelectric modules for electric power generation.
Specify electrode patterns and connection layouts using our metallized ceramics expertise, ensuring optimal current distribution and thermal performance for electronic thermocouple pyrometers based on the Peltier effect.
Apply appropriate bonding techniques including soldering, brazing, or conductive adhesives to attach thermoelectric elements to the substrate with precision alignment and thermal contact.
Complete module assembly with electrical connections, protective coatings, and thermal interface materials to ensure reliable operation in your target application environment.
Verify thermal and electrical performance under operational conditions, including thermal cycling, vibration testing, and long-term reliability assessment.
Incorporate the completed thermoelectric module into your final product or system, optimizing for maximum energy conversion efficiency and operational reliability.
Our substrates enable efficient thermoelectric generators that convert waste heat from industrial processes into usable electricity, improving overall energy efficiency by 15-25% and reducing operating costs in manufacturing facilities.
In Peltier cooling modules, our ceramic substrates provide essential electrical isolation while efficiently transferring heat away from cooled components in applications ranging from medical equipment to precision microelectronics enclosures.
For automotive exhaust heat recovery systems, our substrates withstand high temperatures (up to 600°C) and thermal cycling while maintaining electrical isolation and thermal performance in challenging vibration environments.
In spacecraft and satellite systems, our substrates enable radioisotope thermoelectric generators that provide reliable power for extended missions where solar power is impractical, with proven reliability in space environments.
For scientific instruments, medical devices, and laser systems requiring precise temperature stabilization, our substrates enable highly responsive thermoelectric controllers with minimal electrical interference and sub-degree accuracy.
In high-performance computing, telecommunications, and gaming systems, our substrates facilitate compact thermoelectric coolers that manage heat in space-constrained applications, improving component reliability by 30-40%.
High-purity alumina powder selection and formulation with controlled particle size distribution and minimal impurities for optimal thermal and electrical properties.
Advanced tape casting or dry pressing techniques for uniform density and precise thickness control, ensuring consistent performance across production batches.
Controlled atmosphere firing at temperatures up to 1600°C for optimal density development and microstructural control, achieving maximum mechanical strength.
CNC grinding and polishing for exact dimensional control and surface finish requirements, achieving Ra < 0.5 μm for optimal thermal contact.
Screen printing, sputtering, or plating of electrode patterns using various conductor materials (silver, gold, platinum) as required for specific applications.
100% dimensional verification, visual inspection, and sampling for electrical/thermal performance testing to ensure compliance with specifications.
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Main Product:
Alumina Ceramic Substrates,
Aluminum Nitride Substrates,
Metallized Ceramics,
AlN Ceramics Disc,
DPC Substrate ,
DBC Ceramic Substrate
