Effect of FeCrAl sublayer composition on the microstructure and corrosion resistance of FeCrAl/yttria-stabilized zirconia composite coatings-Reference-Cited by-同舟云学术

Effect of FeCrAl sublayer composition on the microstructure and corrosion resistance of FeCrAl/yttria-stabilized zirconia composite coatings

Published:2024-02-01 Issue:2 Volume:42 Page:
ISSN:0734-2101
Container-title:Journal of Vacuum Science & Technology A
language:en
Short-container-title:

Author:

Zhu Changda¹^ORCID,Qiu Xi²,Li Yuanming²,Zhang Wei¹^ORCID,Yang Jian¹^ORCID,Zhong Yilong¹^ORCID,Deng Jiuguo¹^ORCID,Zhou Mingyang²,Liu Ning¹,Yang Jijun¹^ORCID

Affiliation:

1. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University 1 , Chengdu 610064, People’s Republic of China

2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China 2 , Chengdu 610213, China

Abstract

The effect of FeCrAl sublayer composition on the microstructure and lead-bismuth eutectic corrosion behavior of the FeCrAl/YSZ (Yttria-stabilized zirconia) composite coatings was systematically investigated by SEM and XRD. The results show that the FeCrAl sublayer as a diffusion barrier and a bonding layer is beneficial to improve the corrosion resistance of the coatings. After corrosion, a slow-growing, continuous, and protective Al-rich oxide is formed at the interface between the YSZ and FeCrAl sublayer, which effectively hinders the inward diffusion of oxygen atoms and the outward diffusion of iron atoms. Especially, the Fe-12Cr-7Al/YSZ coating exhibits the best corrosion resistance even after corrosion at 700 °C. The microscopic corrosion mechanism of FeCrAl/YSZ coatings is elucidated.

Funder

The applied Basic Research programs of Department of Science and Technology of Sichuan Province

Publisher

American Vacuum Society

Link

https://pubs.aip.org/avs/jva/article-pdf/doi/10.1116/6.0003114/19332974/023203_1_6.0003114.pdf

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