Degradation of CeO2 and TiO2 co-stabilized ZrO2 by the V2O5 molten salts and Na2SO4 + V2O5 molten salts

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外文摘要：© 2022 Elsevier B.V.In this study, (Ce0.15Ti0.05)Zr0.80O2 (CTZ) with the tetragonal (t) phase was fabricated by solid-state reaction, and the destabilization resistance of CTZ ceramic was investigated in V2O5, and Na2SO4 + V2O5 molten salts, respectively. After CTZ was corroded in V2O5 molten salt at 700 °C for 2 h, ZrV2O7 and CeVO4 were formed, and the t phase was the main crystalline phase on the CTZ surface. After CTZ was corroded in V2O5 molten salt at 800 °C or 900 °C for 2 h, the amount of CeVO4 increased significantly, and CTZ surface underwent a more corrosion degradation than at 700 °C. After CTZ was corroded in Na2SO4 + V2O5 molten salts at 700 °C or 800 °C for 2 h, the hot corroded products were m-ZrO2 and CeVO4. However, after CTZ was corroded in Na2SO4 + V2O5 molten salts at 800 °C for 10 h or 900 °C for 2 h or 10 h, a new phase of CeO2 was formed due to the mineralization effect. The destabilization of CTZ ceramic under hot corrosion was mainly caused by the chemical interaction and phase transformation.

外文关键词：

Chemical interactionMineralization effectTBCsZrO2

作者：

Wang J.、Wang Y.、Chen M.、Wang C.、Yu Y.、Tian Y.、Jing Q.、Liu B.

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作者单位：

Henan province key laboratory of Utilization of Non-metallic Mineral in the south of Henan Xinyang Normal University

Institute of Development and Application of Shangtianti Nonmetallic Mining Technology

出版年：

2022

DOI：

10.1016/j.surfcoat.2022.128352

Surface & Coatings Technology

ISTP

ISSN：0257-8972

年,卷(期)：2022.437

参考文献量54