High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay
High‐temperature interaction of sol–gel‐derived artificial volcanic ash (AVA) matching the bulk composition of the April 15, 2010 Eyjafjallajokull (Iceland) volcanic eruption with a standard 4 mol% (7 wt%) Y 2 O 3 ‐stabilized ZrO 2 (YSZ) electron‐beam physical vapor deposition (EB‐PVD) thermal barri...
Published in: | Journal of the American Ceramic Society |
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Online Access: | http://dx.doi.org/10.1111/j.1551-2916.2010.04166.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1551-2916.2010.04166.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1551-2916.2010.04166.x/fullpdf |
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crwiley:10.1111/j.1551-2916.2010.04166.x 2024-06-02T08:09:23+00:00 High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay Mechnich, Peter Braue, Wolfgang Schulz, Uwe 2010 http://dx.doi.org/10.1111/j.1551-2916.2010.04166.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1551-2916.2010.04166.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1551-2916.2010.04166.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of the American Ceramic Society volume 94, issue 3, page 925-931 ISSN 0002-7820 1551-2916 journal-article 2010 crwiley https://doi.org/10.1111/j.1551-2916.2010.04166.x 2024-05-03T11:20:30Z High‐temperature interaction of sol–gel‐derived artificial volcanic ash (AVA) matching the bulk composition of the April 15, 2010 Eyjafjallajokull (Iceland) volcanic eruption with a standard 4 mol% (7 wt%) Y 2 O 3 ‐stabilized ZrO 2 (YSZ) electron‐beam physical vapor deposition (EB‐PVD) thermal barrier coating and a corresponding YSZ powder is investigated in order to access possible implications of similar volcanic ashes on the performance of coated turbine engine airfoils. Up to 900°C, AVA deposits and EB‐PVD YSZ do not show significant interaction. Viscous flow above the glass transition of AVA ( T g ∼930°C) yields proceeding wetting of EB‐PVD YSZ coatings. At 1100°C, the YSZ surface is covered by a dense glaze‐like AVA overlay. At 1200°C, AVA is mostly infiltrating the coating, leaving a crystalline plagioclase‐ and hematite‐type residue at the interface. Moreover, some ZrSiO 4 is formed at the expense of YSZ. The overall thermochemical effects on short‐term exposure of the EB‐PVD YSZ coating to a small AVA load were moderate, in particular before complete infiltration. On the other hand, AVA acts as a solvent for the stabilizing Y 2 O 3 beyond 1000°C and a progressive depletion of Y 2 O 3 in the YSZ is observed at the AVA/YSZ interface. Detrimental effects on YSZ phase stability and hence coating lifetime cannot be ruled out for long‐term exposure and higher AVA loads. Article in Journal/Newspaper Iceland Wiley Online Library Eyjafjallajokull ENVELOPE(-19.633,-19.633,63.631,63.631) Journal of the American Ceramic Society 94 3 925 931 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
High‐temperature interaction of sol–gel‐derived artificial volcanic ash (AVA) matching the bulk composition of the April 15, 2010 Eyjafjallajokull (Iceland) volcanic eruption with a standard 4 mol% (7 wt%) Y 2 O 3 ‐stabilized ZrO 2 (YSZ) electron‐beam physical vapor deposition (EB‐PVD) thermal barrier coating and a corresponding YSZ powder is investigated in order to access possible implications of similar volcanic ashes on the performance of coated turbine engine airfoils. Up to 900°C, AVA deposits and EB‐PVD YSZ do not show significant interaction. Viscous flow above the glass transition of AVA ( T g ∼930°C) yields proceeding wetting of EB‐PVD YSZ coatings. At 1100°C, the YSZ surface is covered by a dense glaze‐like AVA overlay. At 1200°C, AVA is mostly infiltrating the coating, leaving a crystalline plagioclase‐ and hematite‐type residue at the interface. Moreover, some ZrSiO 4 is formed at the expense of YSZ. The overall thermochemical effects on short‐term exposure of the EB‐PVD YSZ coating to a small AVA load were moderate, in particular before complete infiltration. On the other hand, AVA acts as a solvent for the stabilizing Y 2 O 3 beyond 1000°C and a progressive depletion of Y 2 O 3 in the YSZ is observed at the AVA/YSZ interface. Detrimental effects on YSZ phase stability and hence coating lifetime cannot be ruled out for long‐term exposure and higher AVA loads. |
format |
Article in Journal/Newspaper |
author |
Mechnich, Peter Braue, Wolfgang Schulz, Uwe |
spellingShingle |
Mechnich, Peter Braue, Wolfgang Schulz, Uwe High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
author_facet |
Mechnich, Peter Braue, Wolfgang Schulz, Uwe |
author_sort |
Mechnich, Peter |
title |
High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
title_short |
High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
title_full |
High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
title_fullStr |
High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
title_full_unstemmed |
High‐Temperature Corrosion of EB‐PVD Yttria Partially Stabilized Zirconia Thermal Barrier Coatings with an Artificial Volcanic Ash Overlay |
title_sort |
high‐temperature corrosion of eb‐pvd yttria partially stabilized zirconia thermal barrier coatings with an artificial volcanic ash overlay |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1551-2916.2010.04166.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1551-2916.2010.04166.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1551-2916.2010.04166.x/fullpdf |
long_lat |
ENVELOPE(-19.633,-19.633,63.631,63.631) |
geographic |
Eyjafjallajokull |
geographic_facet |
Eyjafjallajokull |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Journal of the American Ceramic Society volume 94, issue 3, page 925-931 ISSN 0002-7820 1551-2916 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1551-2916.2010.04166.x |
container_title |
Journal of the American Ceramic Society |
container_volume |
94 |
container_issue |
3 |
container_start_page |
925 |
op_container_end_page |
931 |
_version_ |
1800755083813584896 |