As a result of their great thermal conductivity, molybdenum-copper alloy sheets are utilised as heat sink materials. These two alloys, which do not differ much in their properties, which molybdenum-copper alloy, are less dense compared to the tungsten-copper alloy. When it comes to preparing molybdenum-copper alloy, most practitioners still use the melt-impregnation technique. It involves the use of quality molybdenum powder, bronze powder, and isostatic pressing, which is the high-temperature sintering-copper infiltration. This creates a fine microstructure, which is essential in the formation of materials and components exhibiting arc-breaking capabilities, high conductivity, and low thermal expansion.

The unique and dependable thermal management features of molybdenum-copper alloy sheets have made them essential for cutting-edge equipment and high-powered electronics. With the advent of technologies in 5G communication, new energy, and deep-space exploration, their use in heat sinks and vacuum devices will grow quickly. To ensure the full potential of the material's properties is utilized, the optimization of the design and processes based on the specific working conditions, like heat flux density and vacuum levels, as well as a complete quality control system, is essential.

Properties of Molybdenum-copper Alloy Sheet

Density: 9.8-10.2 g/cm³ (between pure molybdenum and pure copper)

Melting Point: Molybdenum phase approximately 2610℃, copper phase approximately 1083℃; actual service temperature of composite materials ≤800℃

Thermal Conductivity: 160-200 W/(m·K) (close to 60% of pure copper)

Coefficient of Thermal Expansion (CTE): 6.5-7.5×10⁻⁶/℃ (20-400℃)

Tensile Strength: 500-650 MPa

Hardness: HV 200-250

Elongation: ≥15%