Aluminum nitride ceramic threaded pipe

Aluminum nitride ceramic threaded tube is a hollow, externally threaded tubular ceramic component made of high-performance aluminum nitride material through precision machining. It is designed specifically to solve the heat dissipation and insulation problems of third-generation semiconductor (such as gallium nitride GaN, silicon carbide SiC) power modules. With its excellent thermal conductivity, reliable electrical insulation, and outstanding structural strength, it has become a revolutionary solution for heat dissipation management of high-power density electronic devices.

Product core advantage: Why choose aluminum nitride ceramic threaded pipe?
Aluminum nitride ceramic threaded pipes combine the characteristics of the material itself and unique structural design, possessing the following irreplaceable advantages:

1. Ultimate thermal management capability
   Ultra high thermal conductivity: The thermal conductivity of aluminum nitride ceramics can reach 170-230 W/(m · K), which is 8-10 times that of aluminum oxide ceramics and comparable to metallic aluminum. This ensures that heat can be quickly conducted from the heating core (such as the chip substrate) to the heat sink or cold plate, greatly reducing the temperature of the hot spot.
   Low thermal expansion coefficient: Its thermal expansion coefficient (~4.5 × 10 ⁻⁶/℃) matches well with semiconductor chips (such as silicon and silicon carbide) and commonly used substrate materials, effectively reducing stress caused by thermal cycling and improving the long-term reliability of the module.
2. Excellent electrical insulation and mechanical performance
   High insulation strength: It has excellent electrical insulation performance, with a volume resistivity greater than 10 ¹⁴Ω· cm, which can effectively isolate high potentials and ensure the safe operation of power modules in high-voltage environments.
   High mechanical strength: high bending strength, high hardness, able to withstand the torque during installation and mechanical vibration during equipment operation, stable and durable structure.
   Corrosion resistance and plasma erosion resistance: Stable to most acid and alkali solutions, and able to withstand plasma environments, suitable for harsh industrial and semiconductor manufacturing equipment.
3. Innovative thread structure design
   Increasing effective contact area: The threaded structure significantly increases the contact area between the ceramic tube and external heat dissipation metal parts (such as heat sinks or cold plates), breaking the thermal resistance bottleneck of traditional smooth interfaces and improving thermal conductivity efficiency by more than 30%.
   Realize strong mechanical locking: The external thread design allows it to be directly screwed into metal heat dissipation components with internal threads, forming a firm mechanical connection without the need for additional adhesive, avoiding aging problems, while ensuring continuous contact pressure, lower interface thermal resistance, and greater stability.

Key problems solved and application scenarios
Aluminum nitride ceramic threaded pipes are mainly designed to address the increasingly severe challenges of heat dissipation and insulation in the modern power electronics field.
Core problem solved:
The problem of “thermal bottleneck”: In high-power density modules, traditional insulation materials (such as alumina and plastic) have insufficient thermal conductivity, resulting in heat accumulation, high chip junction temperature, and affecting performance, efficiency, and service life.
The contradiction between insulation and thermal conductivity: Metal has good thermal conductivity but is not insulated; Ordinary ceramic insulation but poor thermal conductivity. Aluminum nitride ceramic threaded pipes perfectly unify the two key characteristics of high insulation and high thermal conductivity.
Interface thermal resistance challenge: There are a large number of micro voids in planar contact, and filling with thermal conductive silicone grease will introduce additional thermal resistance. The threaded structure significantly reduces the interfacial thermal resistance by mechanically locking and increasing the contact area.
Structural reliability issues: In temperature cycling and vibration environments, connections between different materials are prone to loosening or fatigue failure. The threaded locking structure provides a more reliable and stable mechanical connection.

Main application areas:
Electric vehicles and rail transit: SiC/GaN power modules used in main drive inverters and DC-DC converters to enhance power density and range.
Industrial frequency converters and servo drives: used for heat dissipation and insulation of high-power frequency converters and servo drives, improving equipment energy efficiency and reliability.
Photovoltaic/wind power inverter: In string inverters and centralized inverters, it provides efficient heat dissipation for power devices and improves power generation efficiency.
Aerospace and Defense Electronics: Suitable for cooling systems of airborne and shipborne electronic equipment that require extremely high weight, volume, and reliability.
RF and microwave communication: As an insulated heat dissipation sleeve for high-power RF amplifier tubes, it ensures the stability of signal transmission.
Semiconductor equipment: a plasma generator used for etching, CVD and other equipment, with thermal conductivity, insulation and corrosion resistance characteristics.

Customized service: meet your precise needs
We are well aware that standard products cannot meet all application scenarios. Therefore, we provide comprehensive customization services to ensure that the product perfectly matches your system.
Size customization: The outer diameter, inner diameter, pitch, length, and thread type (metric, imperial, etc.) of the threaded pipe can be customized according to customer needs.
Shape and structure optimization: supports non-standard end design (such as flanges, platforms), special treatment of inner walls, etc., to optimize fluid channels or installation methods.
Surface treatment and metallization: Metalization (such as nickel plating or gold plating) can be carried out on the end face or specific area of the ceramic tube as needed for easy welding or electrical connection.
Material and performance testing: Provide comprehensive performance testing reports, including thermal conductivity, insulation strength, airtightness, etc., to ensure product quality traceability and performance verification.

Aluminum nitride ceramic threaded tube is not a simple structural component, but a key enabling component for high power density electronic device thermal management systems. It combines the inherent advantages of aluminum nitride material with innovative thread structure design, providing engineers with an ideal solution to solve a series of complex problems such as heat dissipation, insulation, and structural reliability. With the rapid popularization of third-generation semiconductor technology, aluminum nitride ceramic threaded tubes will inevitably become a core element in improving the performance and reliability of the next generation of power electronic systems.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.