Xiao, L. Lu, X.Y. Tan, W.W. Xie, D. Yang, D.Y. Yang, Y. Yang, Z.Q. Zhao, J. JACoW Geneva, Switzerland 978-3-95450-191-5 10.18429/JACoW-SRF2017-MOPB036 English 131-133 MOPB036 ion SRF niobium cavity superconductivity Contribution to a conference proceedings 2018 2018-01 https://doi.org/10.18429/JACoW-SRF2017-MOPB036 http://jacow.org/srf2017/papers/mopb036.pdf Our work is mainly focused on the fabrication methods of Nb3Sn films on Cu substrates and film's properties. There are diffraction peaks of Nb3Sn in the X-ray diffraction patterns in which without diffraction peaks of copper compounds. Scanning electron microstructures of Nb3Sn film reflect its nice compactness and binding force between film and substrate.