Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature
Yttria rich-zirconia thermal barrier coatings (TBCs) with a nominal composition of 65 wt % Y2O3 balanced ZrO2 were deposited by electron-beam physical vapor deposition (EB-PVD) and tested for calciummagnesium- aluminum-silicate (CMAS) infiltration resistance. The infiltration studies were performed...
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ftdlr:oai:elib.dlr.de:113212 2023-12-03T10:22:23+01:00 Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature Naraparaju, Ravisankar Gomez Chavez, Juan J Schulz, Uwe Ramana, C.V. 2017-09 application/pdf https://elib.dlr.de/113212/ https://elib.dlr.de/113212/1/Yttria%20in%20Acta.pdf en eng Elsevier https://elib.dlr.de/113212/1/Yttria%20in%20Acta.pdf Naraparaju, Ravisankar und Gomez Chavez, Juan J und Schulz, Uwe und Ramana, C.V. (2017) Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature. Acta Materialia (136), Seiten 164-180. Elsevier. doi:10.1016/j.actamat.2017.06.055 <https://doi.org/10.1016/j.actamat.2017.06.055>. ISSN 1359-6454. Hochtemperatur-und Funktionsschutzschichten Zeitschriftenbeitrag PeerReviewed 2017 ftdlr https://doi.org/10.1016/j.actamat.2017.06.055 2023-11-06T00:23:57Z Yttria rich-zirconia thermal barrier coatings (TBCs) with a nominal composition of 65 wt % Y2O3 balanced ZrO2 were deposited by electron-beam physical vapor deposition (EB-PVD) and tested for calciummagnesium- aluminum-silicate (CMAS) infiltration resistance. The infiltration studies were performed with a set of one synthetized CMAS composition and two real volcanic ashes from the Eyjafjallaj€okull volcano located in Iceland and the Sakurajima volcano located in southern Japan. The coatings were tested at 1250 �C for short term (5 min) and long term (intervals from 1 to 20 h). The results indicate a significantly different reaction process for the synthesized CMAS compared with the natural volcanic ashes. The yttria-rich zirconia coatings demonstrate promising results against infiltration by vigorously reacting against the molten glass inducing its crystallization by forming apatite and garnet phases. The formed reaction products effectively sealed the columnar gaps of the TBC and generated a uniform reaction layer that prevented further infiltration. Article in Journal/Newspaper Eyjafjallajökull Iceland German Aerospace Center: elib - DLR electronic library Acta Materialia 136 164 180 |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Hochtemperatur-und Funktionsschutzschichten |
spellingShingle |
Hochtemperatur-und Funktionsschutzschichten Naraparaju, Ravisankar Gomez Chavez, Juan J Schulz, Uwe Ramana, C.V. Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
topic_facet |
Hochtemperatur-und Funktionsschutzschichten |
description |
Yttria rich-zirconia thermal barrier coatings (TBCs) with a nominal composition of 65 wt % Y2O3 balanced ZrO2 were deposited by electron-beam physical vapor deposition (EB-PVD) and tested for calciummagnesium- aluminum-silicate (CMAS) infiltration resistance. The infiltration studies were performed with a set of one synthetized CMAS composition and two real volcanic ashes from the Eyjafjallaj€okull volcano located in Iceland and the Sakurajima volcano located in southern Japan. The coatings were tested at 1250 �C for short term (5 min) and long term (intervals from 1 to 20 h). The results indicate a significantly different reaction process for the synthesized CMAS compared with the natural volcanic ashes. The yttria-rich zirconia coatings demonstrate promising results against infiltration by vigorously reacting against the molten glass inducing its crystallization by forming apatite and garnet phases. The formed reaction products effectively sealed the columnar gaps of the TBC and generated a uniform reaction layer that prevented further infiltration. |
format |
Article in Journal/Newspaper |
author |
Naraparaju, Ravisankar Gomez Chavez, Juan J Schulz, Uwe Ramana, C.V. |
author_facet |
Naraparaju, Ravisankar Gomez Chavez, Juan J Schulz, Uwe Ramana, C.V. |
author_sort |
Naraparaju, Ravisankar |
title |
Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
title_short |
Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
title_full |
Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
title_fullStr |
Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
title_full_unstemmed |
Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature |
title_sort |
interaction and infiltration behavior of eyjafjallajökull, sakurajima volcanic ashes and a synthetic cmas containing feo with/in eb-pvd zro2-65 wt% y2 o3 coating at high temperature |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://elib.dlr.de/113212/ https://elib.dlr.de/113212/1/Yttria%20in%20Acta.pdf |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_relation |
https://elib.dlr.de/113212/1/Yttria%20in%20Acta.pdf Naraparaju, Ravisankar und Gomez Chavez, Juan J und Schulz, Uwe und Ramana, C.V. (2017) Interaction and infiltration behavior of Eyjafjallajökull, Sakurajima volcanic ashes and a synthetic CMAS containing FeO with/in EB-PVD ZrO2-65 wt% Y2 O3 coating at high temperature. Acta Materialia (136), Seiten 164-180. Elsevier. doi:10.1016/j.actamat.2017.06.055 <https://doi.org/10.1016/j.actamat.2017.06.055>. ISSN 1359-6454. |
op_doi |
https://doi.org/10.1016/j.actamat.2017.06.055 |
container_title |
Acta Materialia |
container_volume |
136 |
container_start_page |
164 |
op_container_end_page |
180 |
_version_ |
1784270304410861568 |