Licheng Chen, Yawen Zhao, Xianglin Chen, Hefei Ji, Bin Su, Piheng Chen, Xiaolin Wang
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Insight into the mechanism of abnormal degradation of duplex U-Nb alloy
Niobium is introduced to uranium to enhance the corrosion resistance of metallic uranium, while duplex U-Nb alloy exhibits anomalous degradation to hydrogen corrosion. To understand the underlying mechanism, we employed high-resolution transmission electron microscopy (HRTEM) and density functional theory (DFT) calculations to characterize the structure of the phase interface in duplex U-Nb alloy and its interaction with hydrogen and vacancy. Combined with the different behaviors of hydrogen in the two phases of the duplex U-Nb alloy, a mechanism contributing to the observed abnormal degradation is proposed, corroborated by the special distribution of hydride within the duplex U-Nb alloy.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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