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https://doi.org/10.18429/JACoW-SRF2019-TUP076
Title Electrochemical Deposition of Nb₃Sn on the Surface of Cu Substrates
Authors
  • M. Lu, Q.W. Chu, Y. He, Z.Q. Lin, F. Pan, T. Tan, Z.Q. Yang
    IMP/CAS, Lanzhou, People’s Republic of China
Abstract Coat­ing su­per­con­duct­ing Nb₃Sn thin film on the inner sur­face of a su­per­con­duct­ing RF cav­ity is one of the most promis­ing ap­proaches to im­prove the per­for­mance of the ac­cel­er­at­ing cav­ity. Com­pared with tra­di­tional evap­o­ra­tion and sput­ter­ing, elec­tro­chem­i­cal coat­ing has the ad­van­tages on process sim­plic­ity, low cost and mass pro­duc­tion. How­ever, the con­ven­tional elec­tro­plat­ing, be­cause of its low growth tem­per­a­ture and aque­ous re­ac­tion en­vi­ron­ment, tends to pro­duce porous, loosely bonded, and often con­t­a­m­i­nated film. All these prop­er­ties re­sult in ex­ces­sive pin­ning cen­ter and de­te­ri­o­rate the su­per­con­duct­ing radio fre­quency cav­i­ties per­for­mance. In this paper, a new method in­clud­ing multi-layer elec­tro­plat­ing and heat treat­ment is used to de­posit Nb₃Sn thin film on top of cop­per sub­strates. Im­por­tant growth pa­ra­me­ters, e.g. elec­tri­cal cur­rent den­sity, layer thick­ness ratio, and an­neal­ing tem­per­a­ture are stud­ied. The mor­phol­ogy of the film sur­faces was ob­served by scan­ning elec­tron mi­cro­scope (SEM) and the struc­ture of the film was an­a­lyzed by X-ray dif­frac­tion (XRD). The re­sults showed that a flat and uni­form Nb₃Sn layer on cop­per can be ob­tained, and the thick­ness is about 7 mi­cron.
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Conference SRF2019
Series International Conference on RF Superconductivity (19th)
Location Dresden, Germany
Date 30 June-05 July 2019
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Peter Michel (HZDR, Dresden, Germany); André Arnold (HZDR, Dresden, Germany); Volker RW Schaa (GSI, Darmstadt, Germany)
Online ISBN 978-3-95450-211-0
Online ISSN ""
Received 23 June 2019
Accepted 01 July 2019
Issue Date 14 August 2019
DOI doi:10.18429/JACoW-SRF2019-TUP076
Pages 624-627
Copyright
Creative Commons CC logoPub­lished by JACoW Pub­lish­ing under the terms of the Cre­ative Com­mons At­tri­bu­tion 3.0 In­ter­na­tional li­cense. Any fur­ther dis­tri­b­u­tion of this work must main­tain at­tri­bu­tion to the au­thor(s), the pub­lished ar­ti­cle's title, pub­lisher, and DOI.