The evolution of chemical nature on U-0.79 wt.%Ti surface during vacuum annealing

被引：9
|
作者：
Shi, Peng [1 ]
Luo, Lizhu [2 ]
Zhao, Yawen [1 ]
Fu, Xiaoguo [1 ]
Ao, Bingyun [2 ]
Bai, Bin [2 ]
Wang, Xiaolin [1 ]
机构：
[1] China Acad Engn Phys, Mianyang 621900, Peoples R China
[2] Sci & Technol Surface Phys & Chem Lab, Mianyang 621907, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 343卷
基金：
中国国家自然科学基金;
关键词：
U-Ti alloy; Vacuum annealing; XPS; Oxycarbide; Surface segregation; RAY PHOTOELECTRON-SPECTROSCOPY; URANIUM OXIDATION-STATES; ELECTRON-SPECTROSCOPY; HYDRIDING KINETICS; SINGLE-CRYSTAL; THIN-FILM; DIOXIDE; IMPURITIES; NUCLEATION; GROWTH;
D O I：
10.1016/j.apsusc.2015.02.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The evolution of the oxide-overlayer's chemical nature on the surface of U-0.79 wt.%Ti alloy during vacuum annealing has been examined in situ by X-ray photoelectron spectroscopy (XPS). A specimen sheet of the alloy covered by oxide films is heated from room temperature to 700 degrees C in vacuum. It is found that the UO2+x outer oxide layer starts to be reduced to UO2 at 200 degrees C. Between 300 and 400 degrees C, an oxycarbide (UOxCy) layer is observed due to the reaction between UO2 and carbon. Above 500 degrees C, UOxCy decomposes and the surface covered oxide layer starts to be reduced to the metallic state, meanwhile, a thermal driven segregation of Ti to the surface is also observed. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：49 / 55
页数：7
相关论文
共 17 条
  • [1] Preferred hydride growth orientation of U-0.79 wt.%Ti alloy with β+U2Ti microstructure
    Shi, Peng
    Shen, Liang
    Bai, Bin
    Lang, Dingmu
    Lu, Lei
    Li, Gan
    Lai, Xinchun
    Zhang, Pengcheng
    Wang, Xiaolin
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2013, 441 (1-3) : 1 - 5
  • [2] An enhanced hydrogen corrosion by the Ti(C,N) inclusions in U-0.79 wt%Ti alloy
    Li, Fangfang
    Lu, Lei
    Meng, Xiandong
    Xiao, Hong
    Ji, Hefei
    Zeng, Rongguang
    Zhang, Xinjian
    Wang, Xiaolin
    Zhao, Yawen
    Shi, Peng
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 820
  • [3] Effect of Vacuum Annealing on the Compositions of U-0.79wt% Ti Alloy Surface Exposed in a Salt Fog Environment
    Cai, Dingzhou
    Pan, Qifa
    Li, Yingru
    Luo, Lizhu
    Deng, Hui
    Sang, Ge
    [J]. CORROSION, 2017, 73 (06) : 694 - 703
  • [4] Influence of macroscopic defects on the corrosion behavior of U-0.79 wt%Ti alloy in sodium chloride solution
    Cai, Dingzhou
    Wang, Ming
    Ren, Yiming
    Yang, Shanli
    Sang, Ge
    Li, Yingru
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2018, 20 (02) : 765 - 774
  • [5] Influences of pH Values' Changes on the Oxide Film of U-0.79 wt.% Ti Alloy in Aqueous SolutionA Combined Study of Traditional Electrochemical Tests and Scanning Reference Electrode Technique
    Cai, Dingzhou
    Zhang, Dongxu
    Chen, Xianglin
    Wu, Haoxi
    Wang, Ming
    Sang, Ge
    Li, Yingru
    [J]. COATINGS, 2019, 9 (04):
  • [6] Evolution of stress and microstructure in NiFe (20 wt.%) thin films during annealing
    Brückner, W
    Thomas, J
    Schneider, CM
    [J]. THIN SOLID FILMS, 2001, 385 (1-2) : 225 - 229
  • [7] Microstructure, Texture Evolution and Magnetic Properties of Fe-6.5 wt. % Si and Fe-6.5 wt. % Si-0.5 wt. % Cu Alloys during Rolling and Annealing Treatment
    Cheng, Zhaoyang
    Liu, Jing
    Zhu, Jiachen
    Xiang, Zhidong
    Jia, Juan
    Bi, Yunjie
    [J]. METALS, 2018, 8 (02):
  • [8] Effect of Fe and Si on the Phase Composition and Microstructure Evolution in Al-2 wt.% Cu-2 wt.% Mn Alloy During Solidification, Cold Rolling and Annealing
    N. A. Belov
    T. K. Akopyan
    N. O. Korotkova
    S. O. Cherkasov
    A. O. Yakovleva
    [J]. JOM, 2021, 73 : 3827 - 3837
  • [9] Effect of Fe and Si on the Phase Composition and Microstructure Evolution in Al-2 wt.% Cu-2 wt.% Mn Alloy During Solidification, Cold Rolling and Annealing
    Belov, N. A.
    Akopyan, T. K.
    Korotkova, N. O.
    Cherkasov, S. O.
    Yakovleva, A. O.
    [J]. JOM, 2021, 73 (12) : 3827 - 3837
  • [10] Effects of recovery and recrystallization on microstructure and texture during annealing of a cold deformed superconducting Nb-50(wt.)%Ti alloy
    Ferreira, Andrei Marx
    Martorano, Marcelo Aquino
    de Lima, Nelson Batista
    Padilha, Angelo Fernando
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 887
12