Electrical conductivities and mechanical properties of Ti3SiC2 reinforced Cu-based composites prepared by cold spray
JOURNAL OF ALLOYS AND COMPOUNDS(2023)
摘要
In order to improve the wear resistance and oxidation resistance of Cu without compromising the electrical and thermal conductivities, Cu-xTi3SiC2 (x = 0, 10, 20, 30, 40, wt%) composites were prepared by cold spray, which can be used as an additive manufacturing technology. Comparing with Cu, the ultimate tensile strengths (UTS) of as-deposited composites increased significantly, with a slight loss in electrical and thermal conductivities. After annealing at 500 degrees C and 800 degrees C for 2 h in vacuum, the composites exhibited brittle and ductile fracture characteristics, respectively. The interface reaction between Cu and Ti3SiC2 was critical to its tensile properties. In these composites, the Cu-20Ti3SiC2 composite annealed at 800 degrees C pos-sessed optimal overall performances, such as relatively higher UTS (304 MPa) and electrical conductivity (45.4% IACS).(c) 2023 Elsevier B.V. All rights reserved.
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关键词
Cu-Ti(3)SiC2 composites,Cold spray,Electrical conductivity,Tensile property,Annealing,Reaction layer
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