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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.
These specialized substrates serve as critical components in thermoelectric devices, enabling efficient conversion between thermal and electrical energy. With excellent thermal conductivity matched with superior electrical insulation properties, our substrates form the foundation for reliable thermoelectric modules used in power generation, refrigeration, and temperature control applications.
High-Purity Alumina Ceramic Substrates for 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.
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.
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.
Exceptional flexural strength (>300 MPa) and compressive strength (>2000 MPa) provide robust mechanical support for fragile thermoelectric elements, ensuring module integrity under operational stresses.
Highly resistant to chemical attack and oxidation, our substrates maintain performance in harsh environments and at elevated temperatures where organic insulators would degrade.
Advanced manufacturing techniques ensure precise dimensional control and surface flatness, critical for maintaining uniform contact pressure across all thermoelectric elements in the module.
Our substrates enable efficient thermoelectric generators that convert waste heat from industrial processes into usable electricity, improving overall energy efficiency and reducing operating costs.
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 electronic enclosures.
For automotive exhaust heat recovery systems, our substrates withstand high temperatures 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 (RTGs) that provide reliable power for extended missions where solar power is impractical.
For scientific instruments, medical devices, and laser systems requiring precise temperature stabilization, our substrates enable highly responsive thermoelectric controllers with minimal electrical interference.
In high-performance computing, telecommunications, and gaming systems, our substrates facilitate compact thermoelectric coolers that manage heat in space-constrained applications.
Our manufacturing facilities and processes are certified to international quality standards (Certificate: GXLH41023Q10642R0S). We maintain rigorous quality control protocols throughout production to ensure consistent performance and reliability.
Our ceramic insulating substrates comply with relevant industry standards for electronic ceramics and are suitable for use in automotive, aerospace, medical, and industrial applications requiring certified components.
We offer comprehensive OEM & ODM services to meet specific customer requirements. Our technical team can produce ceramic substrates with thicknesses ranging from 0.2mm to 2.00mm, with custom dimensions, shapes, and surface finishes according to customer specifications.
Our expertise extends to specialized requirements such as custom metallization ceramics with various electrode patterns optimized for your specific thermoelectric module design. We can also provide hybrid solutions incorporating other advanced materials like aluminum nitride ceramics for applications requiring enhanced thermal performance.
Whether you require standard 96% alumina or high-purity 99.6 alumina ceramic substrate for enhanced performance, our engineering team can develop solutions that meet your exact technical requirements.
Our manufacturing process incorporates advanced techniques specifically developed for high-performance ceramic substrates:
Each production batch undergoes multiple quality checkpoints to ensure dimensional accuracy, surface quality, and electrical/thermal performance.
We package our ceramic substrates in specially designed anti-static containers with protective liners to prevent scratches, contamination, and electrostatic damage. Sturdy cartons are stacked on pallets and secured with straps or shrink wrap for optimal protection during transit.
We support multiple transportation methods including ocean, air, and express shipping, with flexible Incoterm options (FOB, CIF, EXW) available. Our major shipping ports include Shanghai, Beijing, and Xi'an.
For most thermoelectric applications, 96% alumina provides an excellent balance of performance and cost-effectiveness. However, for applications requiring maximum thermal conductivity or operating at very high temperatures, our 99.6 alumina ceramic substrate offers enhanced performance despite the higher cost.
Yes, we offer comprehensive metallization ceramics services including screen printing of various conductor materials (silver, gold, platinum) as well as thin-film deposition techniques for finer feature resolution. Our engineering team can help select the optimal metallization approach for your specific application.
Matching the coefficient of thermal expansion between the substrate and thermoelectric materials minimizes stress during temperature cycling, preventing delamination, cracking, or performance degradation over time. This is particularly important in applications with frequent thermal cycling.
Our standard alumina substrates can operate continuously at temperatures up to 1600°C, with short-term excursions to higher temperatures possible. For applications requiring operation above 1600°C, we can provide specialized formulations with enhanced high-temperature stability.
Yes, we also manufacture aluminum nitride ceramics which offer significantly higher thermal conductivity (150-180 W/m·K) for applications where heat transfer is the primary concern. However, AlN is more expensive and may not be necessary for all thermoelectric applications.
Absolutely. We specialize in large-format substrates up to 240×280mm, which are ideal for high-power thermoelectric generators. Our proprietary manufacturing techniques ensure minimal warpage and consistent properties across even the largest substrate areas.
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Main Product:
Alumina Ceramic Substrates,
Aluminum Nitride Substrates,
Metallized Ceramics ,
AlN Ceramics Disc,
DPC Substrate,
DBC Ceramic Substrate
