Improved corrosion resistance of TiAlCrNbMo alloy to lead-bismuth eutectic by pre-oxidation

Y. Liu; H.E. Ge; Q.S. Ren; H.W. Deng; Z. Li; B. Du; T. Zhang

Journal of Materials Research and Technology (Jan 2024)

Improved corrosion resistance of TiAlCrNbMo alloy to lead-bismuth eutectic by pre-oxidation

Y. Liu,
H.E. Ge,
Q.S. Ren,
H.W. Deng,
Z. Li,
B. Du,
T. Zhang

Affiliations

Y. Liu: School of Physics and Materials Science, Research Center for Advanced Information Materials (CAIM), Guangzhou University, Guangzhou, Guangdong, 510006, China
H.E. Ge: China Nuclear Power Technology Research Institute, Shenzhen, Guangdong, 518031, China
Q.S. Ren: China Nuclear Power Technology Research Institute, Shenzhen, Guangdong, 518031, China
H.W. Deng: School of Physics and Materials Science, Research Center for Advanced Information Materials (CAIM), Guangzhou University, Guangzhou, Guangdong, 510006, China; Corresponding author.
Z. Li: School of Physics and Materials Science, Research Center for Advanced Information Materials (CAIM), Guangzhou University, Guangzhou, Guangdong, 510006, China
B. Du: School of Physics and Materials Science, Research Center for Advanced Information Materials (CAIM), Guangzhou University, Guangzhou, Guangdong, 510006, China
T. Zhang: School of Physics and Materials Science, Research Center for Advanced Information Materials (CAIM), Guangzhou University, Guangzhou, Guangdong, 510006, China; Corresponding author.

Journal volume & issue: Vol. 28
pp. 707 – 718

Abstract

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A Ti48.5Al46Cr3Nb0.5Mo2 alloy was designed and fabricated to investigate its corrosion resistance to static liquid lead-bismuth eutectic (LBE). The microstructure and corrosion behavior of un-oxidized and pre-oxidized samples were compared. The results show that LBE preferentially penetrated into the alloy along the CrMo-rich σ phase formed at high-temperature. A TiO2 and Al2O3 oxide layer was formed on the surface of the matrix after 2 h pre-oxidized leading to remarkable LBE resistance. When extended the pre-oxidized time to 4 h, the exfoliation of the oxide layer caused by the evaporation of MoO3 significantly weakens the corrosion resistance.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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