首页|Purification of copper foils driven by single crystallization

Purification of copper foils driven by single crystallization

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
High-purity copper(Cu)with excellent thermal and electrical conductivity,is crucial in modern technological appli-cations,including heat exchangers,integrated circuits,and superconducting magnets.The current purification process is mainly based on the zone/electrolytic refining or anion exchange,however,which excessively relies on specific integrated equipment with ultra-high vacuum or chemical solution environment,and is also bothered by external contaminants and energy consumption.Here we report a simple approach to purify the Cu foils from 99.9％(3N)to 99.99％(4N)by a temperature-gradient thermal annealing technique,accompanied by the kinetic evolution of single crystallization of Cu.The success of purification mainly relies on(i)the segregation of elements with low effective distribution coefficient driven by grain-boundary movements and(ii)the high-temperature evaporation of elements with high saturated vapor pressure.The purified Cu foils display higher flexibility(elongation of 70％)and electrical conductivity(104％IACS)than that of the original commercial rolled Cu foils(elongation of 10％,electrical conductivity of～100％IACS).Our results provide an effective strategy to optimize the as-produced metal medium,and therefore will facilitate the potential applications of Cu foils in precision electronic products and high-frequency printed circuit boards.

purificationcopper foilthermal annealing techniquesingle crystallization

寇金宗、赵孟泽、李兴光、何梦林、杨方友、刘科海、成庆秋、任云龙、刘灿、付莹、吴慕鸿、刘开辉、王恩哥

展开 >

Songshan Lake Materials Laboratory,Dongguan 523808,China

Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics,South China Normal University,Guangzhou 510006,China

Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Frontier Research Institute for Physics,South China Normal University,Guangzhou 510006,China

State Key Laboratory for Mesoscopic Physics,Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China

Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education),Department of Physics,Renmin University of China,Beijing 100872,China

International Center for Quantum Materials,Collaborative Innovation Center of Quantum Matter,Peking University,Beijing 100871,China

School of Physics,Liaoning University,Shenyang 110036,China

展开 >

Basic and Applied Basic Research Foundation of Guangdong Province,ChinaBasic and Applied Basic Research Foundation of Guangdong Province,ChinaKey Research and Development Program of Guangdong Province,ChinaKey Research and Development Program of Guangdong Province,ChinaKey Research and Development Program of Guangdong Province,ChinaKey Research and Development Program of Guangdong Province,ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaStrategic Priority Research Program of the Chinese Academy of SciencesPearl River Talent Recruitment Program of Guangdong Province,ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationScience and Technology Plan Project of Liaoning Province,China

2019A15151103022022A15151400032020B0101890012021B03010300022019B0109310012018B03032700152172035520250235232220551991342520210065199134452100115118881019216320612104018122744562021YFB32003032022YFA14056002018YFA07037002021YFA14002012021YFA1400502XDB330000002019ZT08C3212020T1300222020M6801782021JH2/10100012

2024

10.1088/1674-1056/ad0ec5

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
  • 47