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Superconducting Nb3Sn films have been synthesized via Nb coated on bronze with heat treatment. By changing the annealing time and temperature, the tin concentration in different film is varied. Magnetic moment measurement indicate critical temperature Tc of different Nb3Sn thin film are varies with the composition of Nb-Sn. Considering that high temperature will cause deformation of the bronze substrate, all heat treatment temperatures are not higher than 700℃. The experiment results show that high-temperature heat treatment above 600℃combined with medium-temperature heat treatment near 400℃can achieve high Tc while reducing annealing time.
表面工程在线是由中国机械总院集团武汉材料保护研究所有限公司组建的一个面向我国表面工程行业的服务性平台，平台得到了中国机械工程学会表面工程分会、中国机械工程学会摩擦学分会、中国腐蚀与防护学会以及国内众多科研院所和高校等组织机构的大力支持。平台有能力整合多方资源，愿为我国表面工程行业的蓬勃发展贡献力量！
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