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,2020,49(5):1729~1735.[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.]
低压冷喷涂增材制造铜基块体性能研究
投稿时间:2019-03-08  修订日期:2019-04-24
中文关键词:  冷喷涂  增材制造  铜块体  导热性能  力学性能
基金项目: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)
中文摘要:
      采用低压冷喷涂增材制造技术制备铜基块体材料,测试块体材料导热性能及力学性能,利用场发射扫描电镜对块体材料截面、拉伸断面进行观察与分析。结果表明,Al2O3体积比为10%的铜基粉末制备的铜基块体材料的导热性能较好,随着Al2O3含量的增加,铜基块体材料导热性能下降。冷喷涂铜基块体材料经退火处理后,导热性能及力学性能有所提升。随着退火温度的上升,热扩散率及抗拉强度呈现先上升后下降的趋势,在退火温度为500℃时,热处理态铜基块体材料热扩散率为加工态铜块体材料的80.43%,抗拉强度为125.3MPa。
Properties of Copper-Based Bulks materials Produced by Low Pressure Cold Spray Additives
英文关键词:cold spray  additive manufacturing  copper bulk  thermal conductivity  mechanical properties
英文摘要:
      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.
作者单位E-mail
冯力 兰州理工大学材料科学与工程学院 fenglils@lut.edu.cn 
李洞亭 兰州理工大学材料科学与工程学院 872456344@qq.com 
畅继荣 兰州理工大学材料科学与工程学院  
安国升 兰州理工大学材料科学与工程学院  
李文生 兰州理工大学材料科学与工程学院  
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