Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials

Eeshani P. Godbole; Nethmi Hewage; Anette von der Handt; David L. Poerschke

doi:10.1016/j.jeurceramsoc.2023.05.009

Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials

Eeshani P. Godbole, Nethmi Hewage, Anette von der Handt, David L. Poerschke

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The durability of thermal and environmental barrier coatings (T/EBCs) exposed to molten calcium magnesium aluminosilicate (CMAS) deposits depends on the nature of reactions between the coatings and deposits. These reactions consume the melt, and the crystallization products can block porosity that otherwise facilitates melt infiltration. The ideal reactions rapidly crystallize the melt with a small amount of dissolved T/EBC. This work compares the relative efficiency of reaction products reported in the literature to those formed on four prospective T/EBC materials based on multi-phase combinations of Gd- or Y-zirconates with GdAlO₃, YAlO₃, Gd₄Al₂O₉, or Y₄Al₂O₉. The results show that adding the aluminates to the zirconate materials promotes Gd- or Y-based aluminosilicates garnet and cuspidine crystallization, in addition to apatite. These phases effectively crystallize the melt, but the reaction efficiency is reduced compared to reactions with single phase zirconates. The implications for integration of these multiphase materials into T/EBC architectures are discussed.

Original language	English (US)
Pages (from-to)	5626-5635
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	43
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2023.05.009
State	Published - Oct 2023

Bibliographical note

Funding Information:
This research was supported by the NASA award number 80NSSC21C0071 monitored by Dr. Cameron Bodenschatz, in collaboration with QuesTek Innovations LLC . N.H. was supported by the NSF REU program under Award Number DMR-1852044 and through the University of Minnesota MRSEC under Award Number DMR-2011401 . Part of this work was carried out in the Characterization Facility at the University of Minnesota , which receives partial support from the NSF through the MRSEC ( DMR-2011401 ) and the NNCI ( ECCS-2025124 ) programs. The sponsors were not involved in the detailed study design, or the data collection, analysis, or interpretation. The authors are grateful to Drs. Noriaki Arai, Pin Lu, and Jiadong Gong (QuesTek Innovations LLC) for the insightful discussions.

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Apatite
CMAS
Fluorite
Garnet
T/EBCs

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title = "Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials",

abstract = "The durability of thermal and environmental barrier coatings (T/EBCs) exposed to molten calcium magnesium aluminosilicate (CMAS) deposits depends on the nature of reactions between the coatings and deposits. These reactions consume the melt, and the crystallization products can block porosity that otherwise facilitates melt infiltration. The ideal reactions rapidly crystallize the melt with a small amount of dissolved T/EBC. This work compares the relative efficiency of reaction products reported in the literature to those formed on four prospective T/EBC materials based on multi-phase combinations of Gd- or Y-zirconates with GdAlO3, YAlO3, Gd4Al2O9, or Y4Al2O9. The results show that adding the aluminates to the zirconate materials promotes Gd- or Y-based aluminosilicates garnet and cuspidine crystallization, in addition to apatite. These phases effectively crystallize the melt, but the reaction efficiency is reduced compared to reactions with single phase zirconates. The implications for integration of these multiphase materials into T/EBC architectures are discussed.",

keywords = "Apatite, CMAS, Fluorite, Garnet, T/EBCs",

author = "Godbole, {Eeshani P.} and Nethmi Hewage and {von der Handt}, Anette and Poerschke, {David L.}",

note = "Funding Information: This research was supported by the NASA award number 80NSSC21C0071 monitored by Dr. Cameron Bodenschatz, in collaboration with QuesTek Innovations LLC . N.H. was supported by the NSF REU program under Award Number DMR-1852044 and through the University of Minnesota MRSEC under Award Number DMR-2011401 . Part of this work was carried out in the Characterization Facility at the University of Minnesota , which receives partial support from the NSF through the MRSEC ( DMR-2011401 ) and the NNCI ( ECCS-2025124 ) programs. The sponsors were not involved in the detailed study design, or the data collection, analysis, or interpretation. The authors are grateful to Drs. Noriaki Arai, Pin Lu, and Jiadong Gong (QuesTek Innovations LLC) for the insightful discussions. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

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language = "English (US)",

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T1 - Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials

AU - Godbole, Eeshani P.

AU - Hewage, Nethmi

AU - von der Handt, Anette

AU - Poerschke, David L.

N1 - Funding Information: This research was supported by the NASA award number 80NSSC21C0071 monitored by Dr. Cameron Bodenschatz, in collaboration with QuesTek Innovations LLC . N.H. was supported by the NSF REU program under Award Number DMR-1852044 and through the University of Minnesota MRSEC under Award Number DMR-2011401 . Part of this work was carried out in the Characterization Facility at the University of Minnesota , which receives partial support from the NSF through the MRSEC ( DMR-2011401 ) and the NNCI ( ECCS-2025124 ) programs. The sponsors were not involved in the detailed study design, or the data collection, analysis, or interpretation. The authors are grateful to Drs. Noriaki Arai, Pin Lu, and Jiadong Gong (QuesTek Innovations LLC) for the insightful discussions. Publisher Copyright: © 2023 Elsevier Ltd

PY - 2023/10

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N2 - The durability of thermal and environmental barrier coatings (T/EBCs) exposed to molten calcium magnesium aluminosilicate (CMAS) deposits depends on the nature of reactions between the coatings and deposits. These reactions consume the melt, and the crystallization products can block porosity that otherwise facilitates melt infiltration. The ideal reactions rapidly crystallize the melt with a small amount of dissolved T/EBC. This work compares the relative efficiency of reaction products reported in the literature to those formed on four prospective T/EBC materials based on multi-phase combinations of Gd- or Y-zirconates with GdAlO3, YAlO3, Gd4Al2O9, or Y4Al2O9. The results show that adding the aluminates to the zirconate materials promotes Gd- or Y-based aluminosilicates garnet and cuspidine crystallization, in addition to apatite. These phases effectively crystallize the melt, but the reaction efficiency is reduced compared to reactions with single phase zirconates. The implications for integration of these multiphase materials into T/EBC architectures are discussed.

AB - The durability of thermal and environmental barrier coatings (T/EBCs) exposed to molten calcium magnesium aluminosilicate (CMAS) deposits depends on the nature of reactions between the coatings and deposits. These reactions consume the melt, and the crystallization products can block porosity that otherwise facilitates melt infiltration. The ideal reactions rapidly crystallize the melt with a small amount of dissolved T/EBC. This work compares the relative efficiency of reaction products reported in the literature to those formed on four prospective T/EBC materials based on multi-phase combinations of Gd- or Y-zirconates with GdAlO3, YAlO3, Gd4Al2O9, or Y4Al2O9. The results show that adding the aluminates to the zirconate materials promotes Gd- or Y-based aluminosilicates garnet and cuspidine crystallization, in addition to apatite. These phases effectively crystallize the melt, but the reaction efficiency is reduced compared to reactions with single phase zirconates. The implications for integration of these multiphase materials into T/EBC architectures are discussed.

KW - Apatite

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KW - Fluorite

KW - Garnet

KW - T/EBCs

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VL - 43

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EP - 5635

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 13

ER -

Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials

Abstract

Bibliographical note

Keywords

MRSEC Support

Publisher link

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University of Minnesota Materials Research Science and Engineering Center (DMR-2011401)

REU Site: Science and Engineering in Nanomaterials

Cite this

Quantifying the efficiency of reactions between silicate melts and rare earth aluminate-zirconate T/EBC materials

Abstract

Bibliographical note

Keywords

MRSEC Support

Publisher link

Find It

Other files and links

Fingerprint

Projects

University of Minnesota Materials Research Science and Engineering Center (DMR-2011401)

REU Site: Science and Engineering in Nanomaterials

Cite this