# Corrosion behavior of calcium-magnesium-alumino-silicate on (La,Gd)<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>/YSZ multilayer for thermal barrier coatings

https://mdr.nims.go.jp/datasets/fa043ae1-872f-461c-a6e2-563a91c5aac6

## File

- [132_23096.pdf](https://mdr.nims.go.jp/filesets/141151c2-9c06-4d9f-98b6-32fdf939bd04/download) ([Detail](https://mdr.nims.go.jp/filesets/141151c2-9c06-4d9f-98b6-32fdf939bd04.md))

## Id

fa043ae1-872f-461c-a6e2-563a91c5aac6

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-20T00:19:24.307438Z

## Updated at

2024-08-29T07:30:27.432289Z

## Published at

2024-08-29T07:30:27.530422Z

## Doi



## First published url

https://doi.org/10.2109/jcersj2.23096

## Date published

2024-05-01

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Corrosion behavior of calcium-magnesium-alumino-silicate on (La,Gd)<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>/YSZ
    multilayer for thermal barrier coatings
  title_type: original
  lang: en

## Description

- description: In this study, the high-temperature corrosion behavior was evaluated
    for (La,Gd)2Zr2O7 (LGZ) used as a promising thermal barrier coatings (TBCs) material.
    (La,Gd)2Zr2O7 + YSZ multilayer prepared from atmos pheric plasma spray (APS) were
    exposed to calcium-magnesium-alumino-silicate (CMAS) melt at 1300 °C for 2, 12,
    48, and 100 h. Molten CMAS and (La,Gd)2Zr2O7 reacted to form reaction layer Ca2Gd8(SiO4)6O2
    (apatite) at 1300 °C. The thickness of the reaction layer increased with increasing
    heat-treatment time. A correlation between the hardness and Young’s modulus relationship
    for the reaction layer of the coating was observed for the microstructure using
    nanoindentation. It was confirmed that the pores of the coating were reduced through
    the infiltration of molten CMAS in the initial stage of the corrosion reaction,
    and the hardness and Young’s modulus were increased due to densification. Fracture
    toughness increased with heat treatment time in both directions (in-plane and
    through-thickness). The fracture toughness in the in-plane direction is 0.19–0.23
    MPa. On the other hand, the fracture resistance in the thickness direction was
    0.87–1.26 MPa, which was higher than that in the in-plane direction. These results
    show that the crack propagates in the in-plane direction and causes TBC delamination.
  description_type: abstract
  lang: und

## Creator

- name: Seung-Hyeon Kim
  role: author
  orcid: https://orcid.org/0000-0002-5920-5962
  organization: National Institute for Materials Science
- name: Toshio Osada
  role: author
  orcid: https://orcid.org/0000-0003-1539-9264
  organization: National Institute for Materials Science
- name: Kee-Sung Lee
  role: author
- name: Yoon-Suk Oh
  role: author
- name: Nobuo Nagashima
  role: author
  orcid: https://orcid.org/0000-0003-3588-980X
  organization: National Institute for Materials Science
- name: Byung-Koog Jang
  role: author

## Contact agent



## Publisher

organization: Ceramic Society of Japan

## Managing organization



## Keyword

- subject: Thermal barrier coatings
  schema: not_defined
- subject: Corrosion
  schema: not_defined
- subject: CMAS
  schema: not_defined
- subject: Rare-earth zirconate
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of the Ceramic Society of Japan
  issn: '13486535'
  volume: '132'
  issue: '5'
  start_page: 205
  end_page: 213
  article_number: '23096'

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## Chemical composition



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## Fileset

- id: 141151c2-9c06-4d9f-98b6-32fdf939bd04
  filename: 132_23096.pdf
  content_type: application/pdf
  size: 5764157
  md5: 45b2e2a9d39535aa1d6b27a757346875

## Thumbnail

fileset_id: 141151c2-9c06-4d9f-98b6-32fdf939bd04
filename: 132_23096.pdf