Formation of Intragranular Nanocavities in Cr2o3 Layer During the Corrosion of Cr3c2+Cr Coated Zirlo

Xie, Shijing; Liu, Keqiang; Meng, Ruizhi; Cui, Yanguang; Wang, Chen; Lu, Junqiang; Song, Zhongxiao; Wang, Dawei; Liu, Wenbo; Qiu, Jie; Yun, Di

doi:10.2139/ssrn.4732366

Download This Paper

Open PDF in Browser

Add Paper to My Library

Formation of Intragranular Nanocavities in Cr2o3 Layer During the Corrosion of Cr3c2+Cr Coated Zirlo

10 Pages Posted: 20 Feb 2024

See all articles by Shijing Xie

Ruizhi Meng

Xi'an Jiaotong University (XJTU) - School of Nuclear Science and Technology

Intragranular nanocavities were observed in the Cr2O3 layer of the Cr3C2+Cr coated Zirlo specimen corroded in steam at 1200 ℃ for 1 h. By comparing the coating specimen that was quenched from 1200 ℃ with the one that was not, we considered the root cause of the intragranular nanocavities in Cr2O3 was that the nanocavities that formed in the original coating were swept into the Cr2O3 grains during the corrosion process. This explanation may also apply to the formation of intragranular nanocavities in the single metal Cr-coated zirconium alloys corroded at high temperatures.

Keywords: Cr coating, nanocavity, high temperature corrosion, zirconium alloys, accident-tolerant fuel

Suggested Citation: Suggested Citation

Xie, Shijing and Liu, Keqiang and Meng, Ruizhi and Cui, Yanguang and Wang, Chen and Lu, Junqiang and Song, Zhongxiao and Wang, Dawei and Liu, Wenbo and Qiu, Jie and Yun, Di, Formation of Intragranular Nanocavities in Cr2o3 Layer During the Corrosion of Cr3c2+Cr Coated Zirlo. Available at SSRN: https://ssrn.com/abstract=4732366 or http://dx.doi.org/10.2139/ssrn.4732366