Preparation Techniques and Performance Analysis of Molybdenum-Copper Composite

1.Infiltration Method:
The infiltration method is a relatively low-cost approach for preparing molybdenum-copper composites.
Molybdenum-copper composites prepared by this method exhibit a uniform distribution of molybdenum and copper phases, with density and properties close to foreign counterparts.
Forging results show that the density of molybdenum-copper composites prepared by the infiltration method can reach 99% of the theoretical density, meeting user requirements.
2.Pressureless Infiltration:
Pressureless infiltration is a simple process with relatively low costs for preparing composites.
It is suitable for compositing copper matrices with various reinforcements such as particles, whiskers, and fibers.
However, the wettability of copper alloy liquid on reinforcements is poor during pressureless infiltration, which may hinder spontaneous infiltration.
3.Other Preparation Methods:
In addition to the infiltration method and pressureless infiltration, other preparation methods for molybdenum-copper composites include co-precipitation, composite       electrodeposition, chemical deposition, semi-solid alloy casting, sol-gel method, and more.

4.Physical Properties:
Molybdenum-copper composites possess high electrical and thermal conductivity, low thermal expansion coefficient, non-magnetic properties, and good high-temperature performance.
These properties enable molybdenum-copper composites to have widespread applications in electrical contact materials, heat sink materials, packaging materials, and other fields.
Application Fields:
Molybdenum-copper composites are widely used as non-magnetic sealing metal materials for ceramic sealing, non-magnetic constant expansion materials for temperature compensation in string-type pressure sensors, heat sink materials in electronic packaging, vacuum switches, large-scale integrated circuits, and other microelectronic devices, as well as in some high-power basic current modules.
Molybdenum-copper composites can be designed with different expansion coefficients and conductivity/thermal conductivity by adjusting the molybdenum/copper ratio.
Molybdenum-copper composites prepared by the infiltration method can achieve a density of 99% of the theoretical density.
Molybdenum-copper composite is a material with excellent physical properties and broad application prospects. Through various preparation methods such as infiltration and pressureless infiltration, molybdenum-copper composites with superior properties can be obtained, which have widespread applications in electronics, aerospace, and other fields.