Abstract
Transparent nanocrystallized glasses consisting of Er2Te5O13 nanocrystals (∼100 nm size) have been prepared in 10BaO·10Er2O3·80TeO2, and load/unload displacement curves at room temperature (humidity 53%) have been measured in the penetration depth of ht=200-600 nm using a Vickers nanoindentation technique. The values (4.0-9.4±0.1 GPa) of universal (dynamic) hardness (Hu) in the nanocrystallized glasses are larger than those (Hu=2.7-6.5±0.1 GPa) in the precursor glass and are slightly smaller than those (Hu=4.4-9.7±0.1 GPa) in the opaque crystallized glass consisting of Er2TeO6 crystals. The elastic recoveries during unloading are 0.53-0.61, being almost the same as those in the precursor and opaque crystallized glasses. The elastic Ue and plastic Up deformation energies at ht=500 nm in the nanocrystallized glasses are estimated to be Ue=106 and Up=91±3 kJmol-1, respectively. These values are larger than those of the precursor glass (Ue=83 and Up=57±3 kJmol-1), suggesting that the deformation energy during loading in TeO2-based glasses is largely increased due to nanocrystallization. The main origin of plastic deformation at ht
| Original language | English |
|---|---|
| Pages (from-to) | 407-412 |
| Number of pages | 6 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 316 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - Feb 2003 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials
Cite this
Vickers nanoindentation hardness and deformation energy of transparent erbium tellurite nanocrystallized glasses. / Narita, K.; Benino, Yasuhiko; Fujiwara, T.; Komatsu, T.
In: Journal of Non-Crystalline Solids, Vol. 316, No. 2-3, 02.2003, p. 407-412.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vickers nanoindentation hardness and deformation energy of transparent erbium tellurite nanocrystallized glasses
AU - Narita, K.
AU - Benino, Yasuhiko
AU - Fujiwara, T.
AU - Komatsu, T.
PY - 2003/2
Y1 - 2003/2
N2 - Transparent nanocrystallized glasses consisting of Er2Te5O13 nanocrystals (∼100 nm size) have been prepared in 10BaO·10Er2O3·80TeO2, and load/unload displacement curves at room temperature (humidity 53%) have been measured in the penetration depth of ht=200-600 nm using a Vickers nanoindentation technique. The values (4.0-9.4±0.1 GPa) of universal (dynamic) hardness (Hu) in the nanocrystallized glasses are larger than those (Hu=2.7-6.5±0.1 GPa) in the precursor glass and are slightly smaller than those (Hu=4.4-9.7±0.1 GPa) in the opaque crystallized glass consisting of Er2TeO6 crystals. The elastic recoveries during unloading are 0.53-0.61, being almost the same as those in the precursor and opaque crystallized glasses. The elastic Ue and plastic Up deformation energies at ht=500 nm in the nanocrystallized glasses are estimated to be Ue=106 and Up=91±3 kJmol-1, respectively. These values are larger than those of the precursor glass (Ue=83 and Up=57±3 kJmol-1), suggesting that the deformation energy during loading in TeO2-based glasses is largely increased due to nanocrystallization. The main origin of plastic deformation at ht
AB - Transparent nanocrystallized glasses consisting of Er2Te5O13 nanocrystals (∼100 nm size) have been prepared in 10BaO·10Er2O3·80TeO2, and load/unload displacement curves at room temperature (humidity 53%) have been measured in the penetration depth of ht=200-600 nm using a Vickers nanoindentation technique. The values (4.0-9.4±0.1 GPa) of universal (dynamic) hardness (Hu) in the nanocrystallized glasses are larger than those (Hu=2.7-6.5±0.1 GPa) in the precursor glass and are slightly smaller than those (Hu=4.4-9.7±0.1 GPa) in the opaque crystallized glass consisting of Er2TeO6 crystals. The elastic recoveries during unloading are 0.53-0.61, being almost the same as those in the precursor and opaque crystallized glasses. The elastic Ue and plastic Up deformation energies at ht=500 nm in the nanocrystallized glasses are estimated to be Ue=106 and Up=91±3 kJmol-1, respectively. These values are larger than those of the precursor glass (Ue=83 and Up=57±3 kJmol-1), suggesting that the deformation energy during loading in TeO2-based glasses is largely increased due to nanocrystallization. The main origin of plastic deformation at ht
UR - http://www.scopus.com/inward/record.url?scp=0037303717&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037303717&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(02)01953-1
DO - 10.1016/S0022-3093(02)01953-1
M3 - Article
AN - SCOPUS:0037303717
VL - 316
SP - 407
EP - 412
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 2-3
ER -