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 |
| Externally published | Yes |
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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 journal › Article
}
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 -