Exploration for oxygen diffusion during deoxidation process of terbium with 18O as isotope tracer

被引：3

作者：

Wang, Wenbin ^{[1
]}

Gao, Sie ^{[2
]}

Ke, Buqi ^{[1
]}

Lu, Shaopeng ^{[1
]}

Li, Rufeng ^{[1
]}

Li, Guoling ^{[1
]}

Liang, Xingfang ^{[2
]}

Li, Xingguo ^{[3
]}

机构：

[1] Qingdao Univ, Inst Mat Energy & Environm, Coll Mat Sci & Engn, Qingdao 266071, Peoples R China

[2] Baotou Res Inst Rare Earths, State Key Lab Baiyunobo Rare Earth Resource Res &, Baotou 014030, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

来源：

VACUUM | 2023年 / 208卷

基金：

中国国家自然科学基金;

关键词：

Terbium; Isotopic tracers; Oxygen diffusion; Deoxidation; RE-O RE=GD; ELECTROCHEMICAL DEOXIDATION; SPECTROSCOPY; GADOLINIUM; OXIDATION; BEHAVIOR; METAL; TB; INTERDIFFUSION; TITANIUM;

D O I：

10.1016/j.vacuum.2022.111727

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxygen (O) is the most difficult kind of impurity to be removed from rare earth terbium (Tb), which seriously restricts the promotion of high purity rare earth metal quality. Study the law of oxygen removal during the purification process and clarify the influence and synergism of active substance are of great significance. Herein, isotopic tracer technique (using 18O) has been used to explore the oxygen diffusion process. Secondary ion probe mass spectrometer (SIMS) and Scanning Electron Microscope (SEM) investigated the occurrence state, migration trajectory and relative concentration gradient of oxygen in Tb. The diffusion coefficient as a function of depth and temperature can be simulated based on the experimental data, which is of great significance for the puri-fication and corrosion prevention of Tb. X-ray photoelectron spectroscopy (XPS) clarified the variation of metal valence, indicating the bonding characteristics between O and Tb.

引用

页数：6

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