Electrical contact characteristics of YBaCuO bulk

K. Fukuda, H. Fujita, M. Tomita, Masato Murakami, Naomichi Sakai, I. Hirabayashi, K. Sawa

Research output: Contribution to journalArticle

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 Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.

Original languageEnglish
Pages (from-to)1361-1364
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 2007 Oct 1

Fingerprint

electric contacts
Switches
switches
magnetic energy storage
Energy storage
Contact resistance
Polishing
contact resistance
Metals
Experiments
polishing
metals

Keywords

  • Contact resistance
  • Metal deposition
  • Persistent current switch
  • Quenching
  • YBCO

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electrical contact characteristics of YBaCuO bulk. / Fukuda, K.; Fujita, H.; Tomita, M.; Murakami, Masato; Sakai, Naomichi; Hirabayashi, I.; Sawa, K.

In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 1361-1364.

Research output: Contribution to journalArticle

Fukuda, K, Fujita, H, Tomita, M, Murakami, M, Sakai, N, Hirabayashi, I & Sawa, K 2007, 'Electrical contact characteristics of YBaCuO bulk', Physica C: Superconductivity and its Applications, vol. 463-465, no. SUPPL., pp. 1361-1364. https://doi.org/10.1016/j.physc.2007.04.307
Fukuda, K. ; Fujita, H. ; Tomita, M. ; Murakami, Masato ; Sakai, Naomichi ; Hirabayashi, I. ; Sawa, K. / Electrical contact characteristics of YBaCuO bulk. In: Physica C: Superconductivity and its Applications. 2007 ; Vol. 463-465, No. SUPPL. pp. 1361-1364.
@article{aedc8525e0154f8f825bc27528ed631b,
title = "Electrical contact characteristics of YBaCuO bulk",
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 Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.",
keywords = "Contact resistance, Metal deposition, Persistent current switch, Quenching, YBCO",
author = "K. Fukuda and H. Fujita and M. Tomita and Masato Murakami and Naomichi Sakai and I. Hirabayashi and K. Sawa",
year = "2007",
month = "10",
day = "1",
doi = "10.1016/j.physc.2007.04.307",
language = "English",
volume = "463-465",
pages = "1361--1364",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "SUPPL.",

}

TY - JOUR

T1 - Electrical contact characteristics of YBaCuO bulk

AU - Fukuda, K.

AU - Fujita, H.

AU - Tomita, M.

AU - Murakami, Masato

AU - Sakai, Naomichi

AU - Hirabayashi, I.

AU - Sawa, K.

PY - 2007/10/1

Y1 - 2007/10/1

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 previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.

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 previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.

KW - Contact resistance

KW - Metal deposition

KW - Persistent current switch

KW - Quenching

KW - YBCO

UR - http://www.scopus.com/inward/record.url?scp=34548384876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548384876&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2007.04.307

DO - 10.1016/j.physc.2007.04.307

M3 - Article

VL - 463-465

SP - 1361

EP - 1364

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - SUPPL.

ER -