Abstract
This work describes the degradation of ZrO2-4 mol%Y2O3 (YSZ) coatings obtained by EB-PVD. YSZ coatings were exposed at 1200°C for 10 min-50 hr by isothermal heat treatment in the presence of an erosive impurity of volcanic ash. At the interface between the YSZ coatings and volcanic ash, the coatings were partially dissolved in the volcanic ash, resulting in the degradation of coatings by the formation of the reacted region. A ZrSiO4 or glassy phase is formed by the chemical reaction between YSZ coatings and volcanic ash at 1200°C. The chemically reacted region from the top surface of the YSZ coatings showed a tendency for increased degradation depth with an increase in isothermal heat-treatment time.
| Original language | English |
|---|---|
| Pages (from-to) | 886-889 |
| Number of pages | 4 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 124 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1 2016 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Degradation of EB-PVD ZrO2-4 mol%Y2O3 thermal barrier coatings by volcanic ash deposits. / Jang, Byungkoog; Kim, Seongwon; Oh, Yoon Suk; Lee, Sung Min; Kim, Hyung Tae.
In: Journal of the Ceramic Society of Japan, Vol. 124, No. 9, 01.09.2016, p. 886-889.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Degradation of EB-PVD ZrO2-4 mol%Y2O3 thermal barrier coatings by volcanic ash deposits
AU - Jang, Byungkoog
AU - Kim, Seongwon
AU - Oh, Yoon Suk
AU - Lee, Sung Min
AU - Kim, Hyung Tae
PY - 2016/9/1
Y1 - 2016/9/1
N2 - This work describes the degradation of ZrO2-4 mol%Y2O3 (YSZ) coatings obtained by EB-PVD. YSZ coatings were exposed at 1200°C for 10 min-50 hr by isothermal heat treatment in the presence of an erosive impurity of volcanic ash. At the interface between the YSZ coatings and volcanic ash, the coatings were partially dissolved in the volcanic ash, resulting in the degradation of coatings by the formation of the reacted region. A ZrSiO4 or glassy phase is formed by the chemical reaction between YSZ coatings and volcanic ash at 1200°C. The chemically reacted region from the top surface of the YSZ coatings showed a tendency for increased degradation depth with an increase in isothermal heat-treatment time.
AB - This work describes the degradation of ZrO2-4 mol%Y2O3 (YSZ) coatings obtained by EB-PVD. YSZ coatings were exposed at 1200°C for 10 min-50 hr by isothermal heat treatment in the presence of an erosive impurity of volcanic ash. At the interface between the YSZ coatings and volcanic ash, the coatings were partially dissolved in the volcanic ash, resulting in the degradation of coatings by the formation of the reacted region. A ZrSiO4 or glassy phase is formed by the chemical reaction between YSZ coatings and volcanic ash at 1200°C. The chemically reacted region from the top surface of the YSZ coatings showed a tendency for increased degradation depth with an increase in isothermal heat-treatment time.
UR - http://www.scopus.com/inward/record.url?scp=84984926994&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84984926994&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.16084
DO - 10.2109/jcersj2.16084
M3 - Article
VL - 124
SP - 886
EP - 889
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 9
ER -