Abstract
ZrO 2-(2-8mol%)Y 2O 3 coatings were deposited on zirconia substrates by EB-PVD. The coated layer had a columnar microstructure with intercolumnar gaps between columnar grains. Nanosized pores could be observed around feather-like grains as well as inside the columnar grains. The main phase of all coated specimens was the tetragonal phase. However, the monoclinic and cubic phase of the second phase could be detected for ZrO 2-2mol%Y 2O 3 coatings and ZrO 2-(6-8mol%)Y 2O 3 coatings, respectively. The thermal conductivity of coatings was successfully evaluated with the pulsed thermal imaging method using a combined sample of coatings and a substrate. Both the thermal conductivity and heat capacity of Y 2O 3-doped ZrO 2 coatings tended to decrease with increasing amounts of Y 2O 3.
| Original language | English |
|---|---|
| Pages (from-to) | 177-181 |
| Number of pages | 5 |
| Journal | Surface and Coatings Technology |
| Volume | 207 |
| DOIs | |
| Publication status | Published - Aug 25 2012 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Characterization of the thermal conductivity of EB-PVD ZrO 2-Y 2O 3 coatings with a pulsed thermal imaging method. / Jang, Byungkoog; Sun, J. G.; Kim, S. W.; Oh, Y. S.; Kim, H. T.
In: Surface and Coatings Technology, Vol. 207, 25.08.2012, p. 177-181.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterization of the thermal conductivity of EB-PVD ZrO 2-Y 2O 3 coatings with a pulsed thermal imaging method
AU - Jang, Byungkoog
AU - Sun, J. G.
AU - Kim, S. W.
AU - Oh, Y. S.
AU - Kim, H. T.
PY - 2012/8/25
Y1 - 2012/8/25
N2 - ZrO 2-(2-8mol%)Y 2O 3 coatings were deposited on zirconia substrates by EB-PVD. The coated layer had a columnar microstructure with intercolumnar gaps between columnar grains. Nanosized pores could be observed around feather-like grains as well as inside the columnar grains. The main phase of all coated specimens was the tetragonal phase. However, the monoclinic and cubic phase of the second phase could be detected for ZrO 2-2mol%Y 2O 3 coatings and ZrO 2-(6-8mol%)Y 2O 3 coatings, respectively. The thermal conductivity of coatings was successfully evaluated with the pulsed thermal imaging method using a combined sample of coatings and a substrate. Both the thermal conductivity and heat capacity of Y 2O 3-doped ZrO 2 coatings tended to decrease with increasing amounts of Y 2O 3.
AB - ZrO 2-(2-8mol%)Y 2O 3 coatings were deposited on zirconia substrates by EB-PVD. The coated layer had a columnar microstructure with intercolumnar gaps between columnar grains. Nanosized pores could be observed around feather-like grains as well as inside the columnar grains. The main phase of all coated specimens was the tetragonal phase. However, the monoclinic and cubic phase of the second phase could be detected for ZrO 2-2mol%Y 2O 3 coatings and ZrO 2-(6-8mol%)Y 2O 3 coatings, respectively. The thermal conductivity of coatings was successfully evaluated with the pulsed thermal imaging method using a combined sample of coatings and a substrate. Both the thermal conductivity and heat capacity of Y 2O 3-doped ZrO 2 coatings tended to decrease with increasing amounts of Y 2O 3.
UR - http://www.scopus.com/inward/record.url?scp=84865723425&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865723425&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2012.06.055
DO - 10.1016/j.surfcoat.2012.06.055
M3 - Article
AN - SCOPUS:84865723425
VL - 207
SP - 177
EP - 181
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
ER -