An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures

Y. Yoshino, A. Iwabuchi, K. Katagiri, K. Noto, Naomichi Sakai, Masato Murakami

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Vickers hardness properties of bulk superconductors have been investigated to estimate the mechanical properties of bulk materials. However, the test at cryogenic temperatures had not been conducted at all. Then we conducted Vickers hardness test on (001) plane of YBaCuO and (Sm,Gd)BaCuO bulk superconductors from 40 to 293 K. The hardness of YBaCuO and (Sm,Gd)BaCuO increased with decreasing temperature up to 19 000 MPa and 10 000 MPa, respectively. Furthermore, the cracks caused by the indentation were observed with SEM, and the fracture toughness K IC at cryogenic temperatures was calculated. The K IC of YBaCuO and (Sm,Gd)BaCuO decreased with decreasing temperature to 0.6 MPa√m and 0.8 MPa√m, respectively.

Original languageEnglish
Pages (from-to)1755-1758
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume12
Issue number1
DOIs
Publication statusPublished - 2002 Mar
Externally publishedYes

Fingerprint

hardness tests
Vickers hardness
cryogenic temperature
Cryogenics
Superconducting materials
mechanical properties
Mechanical properties
evaluation
fracture strength
indentation
hardness
cracks
Temperature
scanning electron microscopy
temperature
estimates
Indentation
Fracture toughness
Hardness
Cracks

Keywords

  • Cryogenic temperatures
  • Deformations mechanism
  • Fracture toughness
  • Vickers hardness

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures. / Yoshino, Y.; Iwabuchi, A.; Katagiri, K.; Noto, K.; Sakai, Naomichi; Murakami, Masato.

In: IEEE Transactions on Applied Superconductivity, Vol. 12, No. 1, 03.2002, p. 1755-1758.

Research output: Contribution to journalArticle

@article{f1fe3a7a6a75472c80f05a4a613e64a5,
title = "An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures",
abstract = "Vickers hardness properties of bulk superconductors have been investigated to estimate the mechanical properties of bulk materials. However, the test at cryogenic temperatures had not been conducted at all. Then we conducted Vickers hardness test on (001) plane of YBaCuO and (Sm,Gd)BaCuO bulk superconductors from 40 to 293 K. The hardness of YBaCuO and (Sm,Gd)BaCuO increased with decreasing temperature up to 19 000 MPa and 10 000 MPa, respectively. Furthermore, the cracks caused by the indentation were observed with SEM, and the fracture toughness K IC at cryogenic temperatures was calculated. The K IC of YBaCuO and (Sm,Gd)BaCuO decreased with decreasing temperature to 0.6 MPa√m and 0.8 MPa√m, respectively.",
keywords = "Cryogenic temperatures, Deformations mechanism, Fracture toughness, Vickers hardness",
author = "Y. Yoshino and A. Iwabuchi and K. Katagiri and K. Noto and Naomichi Sakai and Masato Murakami",
year = "2002",
month = "3",
doi = "10.1109/TASC.2002.1018747",
language = "English",
volume = "12",
pages = "1755--1758",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1",

}

TY - JOUR

T1 - An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures

AU - Yoshino, Y.

AU - Iwabuchi, A.

AU - Katagiri, K.

AU - Noto, K.

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 2002/3

Y1 - 2002/3

N2 - Vickers hardness properties of bulk superconductors have been investigated to estimate the mechanical properties of bulk materials. However, the test at cryogenic temperatures had not been conducted at all. Then we conducted Vickers hardness test on (001) plane of YBaCuO and (Sm,Gd)BaCuO bulk superconductors from 40 to 293 K. The hardness of YBaCuO and (Sm,Gd)BaCuO increased with decreasing temperature up to 19 000 MPa and 10 000 MPa, respectively. Furthermore, the cracks caused by the indentation were observed with SEM, and the fracture toughness K IC at cryogenic temperatures was calculated. The K IC of YBaCuO and (Sm,Gd)BaCuO decreased with decreasing temperature to 0.6 MPa√m and 0.8 MPa√m, respectively.

AB - Vickers hardness properties of bulk superconductors have been investigated to estimate the mechanical properties of bulk materials. However, the test at cryogenic temperatures had not been conducted at all. Then we conducted Vickers hardness test on (001) plane of YBaCuO and (Sm,Gd)BaCuO bulk superconductors from 40 to 293 K. The hardness of YBaCuO and (Sm,Gd)BaCuO increased with decreasing temperature up to 19 000 MPa and 10 000 MPa, respectively. Furthermore, the cracks caused by the indentation were observed with SEM, and the fracture toughness K IC at cryogenic temperatures was calculated. The K IC of YBaCuO and (Sm,Gd)BaCuO decreased with decreasing temperature to 0.6 MPa√m and 0.8 MPa√m, respectively.

KW - Cryogenic temperatures

KW - Deformations mechanism

KW - Fracture toughness

KW - Vickers hardness

UR - http://www.scopus.com/inward/record.url?scp=0036509953&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036509953&partnerID=8YFLogxK

U2 - 10.1109/TASC.2002.1018747

DO - 10.1109/TASC.2002.1018747

M3 - Article

VL - 12

SP - 1755

EP - 1758

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 1

ER -