Hot corrosion behaviors of SrZrO3 ceramic co-doped with Y2O3 and Yb2O3 in molten Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture

Hongying Dong; Yi Ren; Dongxing Wang; Xiaoying Li; Yu Bai; Jun Wang; Wen Ma

doi:10.1016/j.jeurceramsoc.2014.05.026

Hot corrosion behaviors of SrZrO₃ ceramic co-doped with Y₂O₃ and Yb₂O₃ in molten Na₂SO₄, V₂O₅, and Na₂SO₄+V₂O₅ salts mixture

Hongying Dong, Yi Ren, Dongxing Wang, Xiaoying Li, Yu Bai, Jun Wang, Wen Ma^*

^*Corresponding author for this work

Metallurgy and Materials

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

Abstract

The hot corrosion behaviors of Sr(Y_0.05Yb_0.05Zr_0.9)O_2.95 (SYYZ) ceramic were investigated in Na₂SO₄, V₂O₅, and Na₂SO₄+V₂O₅ salts mixture, respectively. Na₂SO₄ did not react with SYYZ ceramic at 900, 950 and 1000°C. m-ZrO₂, YVO₄ and YbVO₄ were the main corrosion products on the SYYZ ceramic surface in V₂O₅ at 800 and 900°C, whereas Sr₃V₂O₈ and t-ZrO₂ appeared at 1000°C. In Na₂SO₄+V₂O₅ salts mixture, the corrosion products were Sr₃V₂O₈ and t-ZrO₂ at 800 and 900°C on the SYYZ ceramic surface, however, a new phase of SrZrO₃ developed at 1000°C. The phase transformation and chemical interaction are the primary corrosion mechanisms for degradation of SYYZ ceramic.

Original language	English
Pages (from-to)	3917-3924
Number of pages	8
Journal	Journal of the European Ceramic Society
Volume	34
Issue number	15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2014.05.026
Publication status	Published - Dec 2014

Keywords

Hot corrosion
Rare-earth oxides
Thermal barrier coatings

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/j.jeurceramsoc.2014.05.026

Cite this

@article{1b8e0bea566d47e1a001ee99199c34a4,

title = "Hot corrosion behaviors of SrZrO3 ceramic co-doped with Y2O3 and Yb2O3 in molten Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture",

abstract = "The hot corrosion behaviors of Sr(Y0.05Yb0.05Zr0.9)O2.95 (SYYZ) ceramic were investigated in Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture, respectively. Na2SO4 did not react with SYYZ ceramic at 900, 950 and 1000°C. m-ZrO2, YVO4 and YbVO4 were the main corrosion products on the SYYZ ceramic surface in V2O5 at 800 and 900°C, whereas Sr3V2O8 and t-ZrO2 appeared at 1000°C. In Na2SO4+V2O5 salts mixture, the corrosion products were Sr3V2O8 and t-ZrO2 at 800 and 900°C on the SYYZ ceramic surface, however, a new phase of SrZrO3 developed at 1000°C. The phase transformation and chemical interaction are the primary corrosion mechanisms for degradation of SYYZ ceramic.",

keywords = "Hot corrosion, Rare-earth oxides, Thermal barrier coatings",

author = "Hongying Dong and Yi Ren and Dongxing Wang and Xiaoying Li and Yu Bai and Jun Wang and Wen Ma",

year = "2014",

month = dec,

doi = "10.1016/j.jeurceramsoc.2014.05.026",

language = "English",

volume = "34",

pages = "3917--3924",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier",

number = "15",

}

TY - JOUR

T1 - Hot corrosion behaviors of SrZrO3 ceramic co-doped with Y2O3 and Yb2O3 in molten Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture

AU - Dong, Hongying

AU - Ren, Yi

AU - Wang, Dongxing

AU - Li, Xiaoying

AU - Bai, Yu

AU - Wang, Jun

AU - Ma, Wen

PY - 2014/12

Y1 - 2014/12

N2 - The hot corrosion behaviors of Sr(Y0.05Yb0.05Zr0.9)O2.95 (SYYZ) ceramic were investigated in Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture, respectively. Na2SO4 did not react with SYYZ ceramic at 900, 950 and 1000°C. m-ZrO2, YVO4 and YbVO4 were the main corrosion products on the SYYZ ceramic surface in V2O5 at 800 and 900°C, whereas Sr3V2O8 and t-ZrO2 appeared at 1000°C. In Na2SO4+V2O5 salts mixture, the corrosion products were Sr3V2O8 and t-ZrO2 at 800 and 900°C on the SYYZ ceramic surface, however, a new phase of SrZrO3 developed at 1000°C. The phase transformation and chemical interaction are the primary corrosion mechanisms for degradation of SYYZ ceramic.

AB - The hot corrosion behaviors of Sr(Y0.05Yb0.05Zr0.9)O2.95 (SYYZ) ceramic were investigated in Na2SO4, V2O5, and Na2SO4+V2O5 salts mixture, respectively. Na2SO4 did not react with SYYZ ceramic at 900, 950 and 1000°C. m-ZrO2, YVO4 and YbVO4 were the main corrosion products on the SYYZ ceramic surface in V2O5 at 800 and 900°C, whereas Sr3V2O8 and t-ZrO2 appeared at 1000°C. In Na2SO4+V2O5 salts mixture, the corrosion products were Sr3V2O8 and t-ZrO2 at 800 and 900°C on the SYYZ ceramic surface, however, a new phase of SrZrO3 developed at 1000°C. The phase transformation and chemical interaction are the primary corrosion mechanisms for degradation of SYYZ ceramic.

KW - Hot corrosion

KW - Rare-earth oxides

KW - Thermal barrier coatings

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DO - 10.1016/j.jeurceramsoc.2014.05.026

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JF - Journal of the European Ceramic Society

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