Abstract
High-density ceramics of ceria doped with 0, 3, 5, 10, 15 and 20 mol.% Gd and with grain sizes exceeding 1.5 μm were investigated by nanoindentation. The deduced elastic moduli are independent of Gd content and remain close to the value reported for bulk ceramics (210 ± 5% GPa). All ceramics exhibit transient creep with displacement proportional to the 1/3 power of the time. For 0.05 <x <0.2, the derived creep magnitude parameter decreases linearly with increasing Gd content. These results strongly suggest that defect rearrangement influences the measurements.
| Original language | English |
|---|---|
| Pages (from-to) | 155-158 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 66 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Feb 2012 |
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Keywords
- Creep rate
- Elastic modulus
- Gd-doped ceria
- Nanoindentation
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Influence of Gd content on the room temperature mechanical properties of Gd-doped ceria. / Korobko, Roman; Chen, Chien Ting; Kim, Sangtae; Cohen, Sidney R.; Wachtel, Ellen; Yavo, Nimrod; Lubomirsky, Igor.
In: Scripta Materialia, Vol. 66, No. 3-4, 02.2012, p. 155-158.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of Gd content on the room temperature mechanical properties of Gd-doped ceria
AU - Korobko, Roman
AU - Chen, Chien Ting
AU - Kim, Sangtae
AU - Cohen, Sidney R.
AU - Wachtel, Ellen
AU - Yavo, Nimrod
AU - Lubomirsky, Igor
PY - 2012/2
Y1 - 2012/2
N2 - High-density ceramics of ceria doped with 0, 3, 5, 10, 15 and 20 mol.% Gd and with grain sizes exceeding 1.5 μm were investigated by nanoindentation. The deduced elastic moduli are independent of Gd content and remain close to the value reported for bulk ceramics (210 ± 5% GPa). All ceramics exhibit transient creep with displacement proportional to the 1/3 power of the time. For 0.05
AB - High-density ceramics of ceria doped with 0, 3, 5, 10, 15 and 20 mol.% Gd and with grain sizes exceeding 1.5 μm were investigated by nanoindentation. The deduced elastic moduli are independent of Gd content and remain close to the value reported for bulk ceramics (210 ± 5% GPa). All ceramics exhibit transient creep with displacement proportional to the 1/3 power of the time. For 0.05
KW - Creep rate
KW - Elastic modulus
KW - Gd-doped ceria
KW - Nanoindentation
UR - http://www.scopus.com/inward/record.url?scp=82255186615&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=82255186615&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2011.10.027
DO - 10.1016/j.scriptamat.2011.10.027
M3 - Article
VL - 66
SP - 155
EP - 158
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 3-4
ER -