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 language | English |
|---|---|
| Pages (from-to) | 1755-1758 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 12 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2002 Mar 1 |
| Event | 17th Annual Conference on Magnet Technology - Geneva, Switzerland Duration: 2001 Sep 24 → 2001 Sep 28 |
Keywords
- Cryogenic temperatures
- Deformations mechanism
- Fracture toughness
- Vickers hardness
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Fingerprint Dive into the research topics of 'An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures'. Together they form a unique fingerprint.
Cite this
Yoshino, Y., Iwabuchi, A., Katagiri, K., Noto, K., Sakai, N., & Murakami, M. (2002). An evaluation of mechanical properties of YBaCuO and (Sm,Gd)BaCuO bulk superconductors using vickers hardness test at cryogenic temperatures. IEEE Transactions on Applied Superconductivity, 12(1), 1755-1758. https://doi.org/10.1109/TASC.2002.1018747