Deformation analysis of electrical contact using YBaCuO bulk superconductors

Hiroyuki Fujita; Masaru Tomita; Masato Murakami; Naomichi Sakai; Izumi Hirabayashi; Koichiro Sawa

doi:10.1016/j.physc.2006.05.052

Deformation analysis of electrical contact using YBaCuO bulk superconductors

Hiroyuki Fujita, Masaru Tomita, Masato Murakami, Naomichi Sakai, Izumi Hirabayashi, Koichiro Sawa

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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 YBCO bulk as a mechanical PCS. From the previous research, it turned out that there were improvements of reducing contact resistance and load in the YBCO switch. In this paper, the phenomenon of the YBCO-deposited metal interface was reported. The authors experimentally investigated as one side curvature silver sample (above contactor), other side YBCO sample deposited silver layers (below contactor). Additionally, the contact area of the sample was analyzed with finite element method (FEM). This analysis result may lead to the elucidation of a contact mechanism with the contact surfaces deposited metal.

Original language	English
Pages (from-to)	1123-1126
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.05.052
Publication status	Published - 2006 Oct 1

Keywords

Contact resistance
Deformation analysis
Metal deposition
Persistent current switch
YBCO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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abstract = "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 YBCO bulk as a mechanical PCS. From the previous research, it turned out that there were improvements of reducing contact resistance and load in the YBCO switch. In this paper, the phenomenon of the YBCO-deposited metal interface was reported. The authors experimentally investigated as one side curvature silver sample (above contactor), other side YBCO sample deposited silver layers (below contactor). Additionally, the contact area of the sample was analyzed with finite element method (FEM). This analysis result may lead to the elucidation of a contact mechanism with the contact surfaces deposited metal.",

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AU - Tomita, Masaru

AU - Murakami, Masato

AU - Sakai, Naomichi

AU - Hirabayashi, Izumi

AU - Sawa, Koichiro

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