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, N. Sakai, M. Murakami

研究成果: Conference article

11 引用 (Scopus)

抜粋

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.

元の言語English
ページ(範囲)1755-1758
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
12
発行部数1
DOI
出版物ステータスPublished - 2002 3 1
外部発表Yes
イベント17th Annual Conference on Magnet Technology - Geneva, Switzerland
継続期間: 2001 9 242001 9 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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