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Properties of Copper-Based Bulks materials Produced by Low Pressure Cold Spray Additives
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School of Materials Science and Engineering,Lanzhou University of Technology

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TG174.4

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    Abstract:

    The copper-based bulk materials were prepared by low-pressure cold spray additive manufacturing technology. The thermal conductivity and mechanical properties of the bulk materials were tested. The cross-section and tensile sections of the bulk materials were observed and analyzed by means of SEM. The results show that the thermal conductivity of copper-based bulk materials prepared from copper-based powders with a volume ratio of 10% Al2O3 is better. With the increase of Al2O3 content, the thermal conductivity decreases. After annealing, the cold-sprayed copper-based bulk material has improved thermal conductivity and mechanical properties. The thermal diffusivity and tensile strength show a trend of increasing first and then decreasing with the increase of annealing temperature. When the annealing temperature is 500℃, the thermal diffusivity of the heat-treated copper-based bulk material is 80.43% of the processed copper bulk material,the tensile strength is 125.3 MPa.

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[Feng Li, Li Dongting, Chang Jirong, Guo-sheng An, and Wen-sheng Li. Properties of Copper-Based Bulks materials Produced by Low Pressure Cold Spray Additives[J]. Rare Metal Materials and Engineering,2020,49(5):1729~1735.]
DOI:10.12442/j. issn.1002-185X.20190188

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History
  • Received:March 08,2019
  • Revised:April 24,2019
  • Adopted:May 14,2019
  • Online: June 05,2020
  • Published: