Applications in Electrical Components
Molybdenum-copper (Mo-Cu) alloy is a composite material composed of molybdenum and copper, combining molybdenum's high melting point and low thermal expansion coefficient with copper's excellent thermal and electrical conductivity. It is widely used in electrical components due to its high-temperature resistance, arc erosion resistance, and efficient heat dissipation, making it particularly suitable for applications requiring high voltage, high current, and enhanced thermal management.
Key Advantages
1.High Thermal Conductivity: 165-250 W/m·K, ensuring efficient heat transfer, ideal for heat-sensitive electrical components.
2.Low Coefficient of Thermal Expansion (CTE): 6.8-11.5 × 10⁻⁶/K, adjustable to match semiconductors or ceramics, reducing thermal stress.
3.Arc Erosion & High-Temperature Resistance: The high melting point of molybdenum and the conductivity of copper provide stability in high-voltage, high-current environments, making it suitable for contactors and switches.
4.Lightweight: Compared to tungsten-copper, lower density, making it ideal for aerospace and lightweight designs.
Applications
Applications |
Specific Uses |
Performance Advantages |
High-Voltage & High-Current Contactors |
Contacts in switchgear, such as vacuum contactors and circuit breakers |
High strength, arc erosion resistance, high melting point |
Thermal Management Components |
Microelectronic packaging, 5G base station heat sinks, power amplifier heat dissipation |
High thermal conductivity, low CTE |
Power Electronics Components |
Key parts in IGBT modules and power modules |
Efficient heat dissipation, thermal compatibility, high reliability |
Other Electrical Components |
Medium- and high-voltage switches, arc-shaped contactors, solid-state seals |
High-temperature resistance, excellent machinability, suitable for precision electrical parts |
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