The invention belongs to the technical field of
composite material preparation, and particularly relates to a
tungsten infiltrated
copper composite material and a preparation method thereof. According to the invention, through a multi-scale through pore network formed by'prefabricated material construction ', molten
copper liquid can be rapidly filled along a
large pore channel and fully permeates into the
tail end of a small pore, so that the defect of'black core' generated by closed pores is thoroughly avoided. According to the prepared
composite material, the
tungsten phase and the
copper phase respectively form a stable and communicated three-dimensional network, so that the unification of
high conductivity (greater than or equal to 60% IACS), high strength and
toughness (
hardness greater than or equal to 100 HB) and excellent arc
ablation resistance is fundamentally and synergistically realized, and the long-standing limitation of'impossible performance triangle 'is effectively broken through. And the process is high in integration level, green and remarkable in strengthening effect, and process simplification,
environmental protection strengthening and
performance improvement are achieved at one
stroke. The advantages of raw materials and process cost are outstanding, the industrialization prospect is wide, and the relationship among high performance, designability and
mass productivity is perfectly balanced.