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冯力,李洞亭,畅继荣,安国升,李文生.低压冷喷涂增材制造铜基块体性能研究[J].稀有金属材料与工程(英文),2020,49(5):1729~1735.[Feng Li,Li Dongting,Chang Jirong,Guo-sheng An and 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.]
Properties of Copper-Based Bulks materials Produced by Low Pressure Cold Spray Additives
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Received:March 08, 2019  Revised:April 24, 2019
DOI:
Key words: cold spray  additive manufacturing  copper bulk  thermal conductivity  mechanical properties
Foundation item:国家重点研发计划(2016YFE0111400);甘肃省重点研究项目(17YF1WA159);中国博士后科学(2018-63-200618-34)
Author NameAffiliation
Feng Li,Li Dongting,Chang Jirong,Guo-sheng An and and Wen-sheng Li  
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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.