Effect of Top coat Spraying Condition on CMAS Damage Kinetics in Air Plasma Sprayed Thermal Barrier Coatings
-
- HAYASHI Yuki
- Graduate School of Eng., Nagaoka Univ. of Tech.
-
- LOKACHARI Siddharth
- Graduate School of Eng., Nagaoka Univ. of Tech.
-
- YAMAGISHI Satoshi
- Dept. of Mech. Eng., Nagaoka Univ. of Tech.
-
- OKAZAKI Masakazu
- Dept. of Mech. Eng., Nagaoka Univ. of Tech.
-
- FUKANUMA Hirotaka
- Plasma Giken Co. Ltd.
Bibliographic Information
- Other Title
-
- 大気プラズマ溶射遮熱コーティングのCMAS損傷発達挙動に及ぼすトップコート溶射条件の影響
- タイキ プラズマ ヨウシャシャネツ コーティング ノ CMAS ソンショウ ハッタツ キョドウ ニ オヨボス トップコート ヨウシャ ジョウケン ノ エイキョウ
Search this article
Abstract
<p>One of new material issues of thermal barrier coatings (TBCs) on hot section components in gas turbine engines is the attack by molten calcium-magnesium-alumino-silicates (CMAS). In this work the influence of the top coat spraying condition on the CMAS damage kinetics in air plasma sprayed (APSed) TBC specimens was investigated by employing a synthetic CMAS product. Experimental works were carried out with three different top coats prepared from powders with different particle sizes and shapes. It was found that the depth of CMAS infiltration increased proportionally to the square root of exposure time in all specimens. The infiltration rate was analyzed based on a mercury porosimetry measurement, which suggested that the physical CMAS infiltration into the APSed top coat by the virtue of capillary action may play an intrinsic role in the CMAS damage. The reaction rate between the CMAS and the ceramic top coat was also influenced by the spraying condition.</p>
Journal
-
- Journal of the Society of Materials Science, Japan
-
Journal of the Society of Materials Science, Japan 66 (2), 80-85, 2017
The Society of Materials Science, Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282680422897792
-
- NII Article ID
- 130005240491
-
- NII Book ID
- AN00096175
-
- ISSN
- 18807488
- 05145163
-
- NDL BIB ID
- 027994328
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed