CMI high-performance sintered metal wicks for heat pipe and vapor chamber capillary cooling

Sintered Metal Wicks

CMI sintered metal wicks for precision capillary wicking and passive pumping. Enables reliable liquid transport, absorption, and retention without moving parts. Perfect for heat pipes, vapor chambers, microelectronics cooling, and passive lubrication systems.

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Sintered Metal Wicks for Capillary Transport & Passive Pumping Applications

CMI Sintered Metal Wicks are engineered porous metal components designed for capillary liquid absorption, transport, retention, and passive pumping applications. Featuring a highly interconnected porous structure and controlled pore distribution, these materials can continuously draw liquid from a reservoir and transport it through the porous matrix without any moving mechanical parts. The capillary function is based on liquid wetting behavior inside the porous metal network, where capillary forces absorb, retain, and continuously replenish liquid as it evaporates, transfers heat, or moves away from the active zone.

CMI porous metal wick structures are widely used in thermal management systems, passive cooling loops, lubrication systems, fuel transport devices, and precision liquid management applications.

Working Principle

Capillary Liquid Transport

Interconnected micro-pores generate capillary forces that continuously draw liquid through the porous structure without external pumps.

Passive Pumping

Liquid is automatically replenished as evaporation or transport occurs, enabling continuous closed-loop thermal management systems.

Controlled Porous Structure

Engineered pore size and porosity optimize capillary pressure, permeability, and liquid transport efficiency.

Reliable Long-Term Operation

Metallic porous structures provide stable performance under vibration, thermal cycling, and demanding operating environments.

Core Applications

Cooling & Thermal Management

  • Heat pipes and vapor chambers
  • Closed-loop liquid cooling systems
  • Microelectronics cooling
  • Power electronics cooling
  • Transformer cooling systems
  • Aerospace and satellite thermal control
  • Space suit cooling systems

Lubrication & Oil Delivery

  • Passive oil supply systems
  • Precision lubrication components
  • Oil reservoir wick inserts
  • High-temperature lubrication points
  • Low-maintenance rotating equipment

Fuel Transport & Evaporation

  • Liquid fuel transport systems
  • Industrial burner wick structures
  • Controlled evaporation devices
  • Combustion support systems

Liquid Management Systems

  • Humidification systems
  • Solvent delivery components
  • Analytical instrument liquid management
  • Sensor liquid distribution systems
  • Laboratory and process equipment

Why Choose CMI Porous Metal Wicks?

✔ Passive liquid transport without external mechanical pumps
✔ High mechanical strength and vibration resistance
✔ Excellent temperature resistance and chemical compatibility
✔ Reusable metallic structure with long service life
✔ Optional particle retention for cleaner fluid delivery
✔ Stable permeability and capillary performance
✔ Fully customizable pore size, porosity, and geometry
✔ Suitable for aerospace, electronics, and industrial systems

Custom Engineering Capabilities

CMI can customize wick structures based on required capillary pressure, liquid transport rate, operating temperature, chemical compatibility, and installation geometry. Available configurations include porous tubes, sheets, discs, heat pipe wick liners, vapor chamber structures, and OEM-integrated porous metal assemblies. Learn more about the principles of [Capillary Action on Wikipedia] Contact our engineering team today to design your custom sintered metal wicks.

Looking for Customized Porous Metal Wick Solutions?

CMI provides engineered capillary wick structures for heat pipes, vapor chambers, passive cooling systems, lubrication devices, and advanced liquid transport applications.

📩 Technical Support: sales@cmifiltration.com

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At CMI, technology is more than just a manufacturing process; it is the science of precision separation. Our multidisciplinary approach combines advanced metallurgy, fluid dynamics, and rigorous quality validation to solve the world’s most challenging filtration tasks in the hydrogen, power, and high-purity water sectors.

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Our fabrication experts are ready to help you with custom-made filter housing and fabricated metal filter vessel solutions. Contact us with your specific requirements for a customized quote.

Our Services

Comprehensive filtration solutions from design to maintenance and support

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CMI offers replacement and cross reference filtration solutions compatible with major brands, providing reliable performance, cost efficiency, and flexible supply.

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CMI delivers complete filtration system integration and skid-mounted solutions with piping, valves, and instrumentation, designed for reliable industrial operation and easy installation.

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CMI provides filtration testing and validation support to ensure filtration performance, optimize system design, and reduce operational risks.

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CMI provides after-sales support and spare parts supply for filtration systems, ensuring reliable operation, reduced downtime, and long-term system performance.

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Custom engineering and OEM fabrication services for industrial filtration equipment, including filter housings, pressure vessels, and non-standard filtration systems.