Abstract
Fully densified TiO2 was obtained from spark plasma sintering (SPS) nanocrystalline rutile powder at a temperature of 720°C. The TiO 2 was densified under an applied pressure of 40 MPa at 720°C. However, the applied pressure was not great enough to cause plastic deformation within the TiO2 nanoparticle compact. Therefore, simple plastic deformation by applied pressure could not lead to the abrupt densification of TiO2 during the SPS. In this work, the abrupt densification of nanocrystalline TiO2 was examined at a low temperature in terms of the Joule heat caused by the flow of current through the compact due to the reduction of Ti4+ to Ti3+.
| Original language | English |
|---|---|
| Pages (from-to) | 993-997 |
| Number of pages | 5 |
| Journal | Journal of the American Ceramic Society |
| Volume | 93 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2010 Apr 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Cite this
Enhancing the densification of nanocrystalline TiO2 by reduction in spark plasma sintering. / Noh, Jun Hong; Jung, Hyun Suk; Cho, In Sun; An, Jae Sul; Cho, Chin Moo; Han, Hyun Soo; Hong, Kug Sun.
In: Journal of the American Ceramic Society, Vol. 93, No. 4, 01.04.2010, p. 993-997.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhancing the densification of nanocrystalline TiO2 by reduction in spark plasma sintering
AU - Noh, Jun Hong
AU - Jung, Hyun Suk
AU - Cho, In Sun
AU - An, Jae Sul
AU - Cho, Chin Moo
AU - Han, Hyun Soo
AU - Hong, Kug Sun
PY - 2010/4/1
Y1 - 2010/4/1
N2 - Fully densified TiO2 was obtained from spark plasma sintering (SPS) nanocrystalline rutile powder at a temperature of 720°C. The TiO 2 was densified under an applied pressure of 40 MPa at 720°C. However, the applied pressure was not great enough to cause plastic deformation within the TiO2 nanoparticle compact. Therefore, simple plastic deformation by applied pressure could not lead to the abrupt densification of TiO2 during the SPS. In this work, the abrupt densification of nanocrystalline TiO2 was examined at a low temperature in terms of the Joule heat caused by the flow of current through the compact due to the reduction of Ti4+ to Ti3+.
AB - Fully densified TiO2 was obtained from spark plasma sintering (SPS) nanocrystalline rutile powder at a temperature of 720°C. The TiO 2 was densified under an applied pressure of 40 MPa at 720°C. However, the applied pressure was not great enough to cause plastic deformation within the TiO2 nanoparticle compact. Therefore, simple plastic deformation by applied pressure could not lead to the abrupt densification of TiO2 during the SPS. In this work, the abrupt densification of nanocrystalline TiO2 was examined at a low temperature in terms of the Joule heat caused by the flow of current through the compact due to the reduction of Ti4+ to Ti3+.
UR - http://www.scopus.com/inward/record.url?scp=77950488903&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950488903&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2009.03529.x
DO - 10.1111/j.1551-2916.2009.03529.x
M3 - Article
AN - SCOPUS:77950488903
VL - 93
SP - 993
EP - 997
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 4
ER -