TY - GEN
T1 - Contact resistance characteristics of high temperature superconducting bulk - Part V
AU - Fujita, Hiroyuki
AU - Fukuda, Katsuya
AU - Sawa, Koichiro
AU - Tomita, Masaru
AU - Murakami, Masato
AU - Sakai, Naomichi
AU - Hirabayashi, Izumi
PY - 2006/1/1
Y1 - 2006/1/1
N2 - A persistent current switch (PCS) is used for superconducting applications, such as superconducting magnetic energy storage (SMES) system. The authors have proposed a mechanical switch of Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In this paper, the authors measured the contact resistance of Ag block with convex curvature and Ag-deposited YBCO sample (dAg/YBCO) in order to study in more depth about the effect of the deposited Ag, contributed greatly for reduction of the residual resistance. As the results of experiments and simulation using FEM, it became clear that it was effective for reducing the residual resistance from a point of increasing the contact area by depositing Ag on contact surface. In addition, it was assumed that the main origin of the residual resistance were the constriction resistance depending on the contact area and the deposited Ag resistance proportional to the layer thickness. Therefore, the thickness of the deposited Ag layer had the optimal value, was 0.60μm in this case. These results may also lead to support to design the mechanical PCS in the future.
AB - A persistent current switch (PCS) is used for superconducting applications, such as superconducting magnetic energy storage (SMES) system. The authors have proposed a mechanical switch of Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In this paper, the authors measured the contact resistance of Ag block with convex curvature and Ag-deposited YBCO sample (dAg/YBCO) in order to study in more depth about the effect of the deposited Ag, contributed greatly for reduction of the residual resistance. As the results of experiments and simulation using FEM, it became clear that it was effective for reducing the residual resistance from a point of increasing the contact area by depositing Ag on contact surface. In addition, it was assumed that the main origin of the residual resistance were the constriction resistance depending on the contact area and the deposited Ag resistance proportional to the layer thickness. Therefore, the thickness of the deposited Ag layer had the optimal value, was 0.60μm in this case. These results may also lead to support to design the mechanical PCS in the future.
KW - Contact resistance
KW - Deformation analysis
KW - Metal deposition
KW - Persistent current switch
KW - YBCO
UR - http://www.scopus.com/inward/record.url?scp=38549167092&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38549167092&partnerID=8YFLogxK
U2 - 10.1109/HOLM.2006.284075
DO - 10.1109/HOLM.2006.284075
M3 - Conference contribution
AN - SCOPUS:38549167092
SN - 1424405815
SN - 9781424405817
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 124
EP - 130
BT - Electrical Contacts 2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 52nd IEEE Holm Conference on Electrical Contacts, Holm 2006
Y2 - 25 July 2006 through 27 July 2006
ER -