Grazing X-ray Diffraction of Surface Oxide Films on Fe-Al/ Al<sub>2</sub>O<sub>3</sub> Composite Coating

ZHAN Qin; YANG Hong-guang; ZHAO Wei-wei; YUAN Xiao-ming; HU Yong

doi:10.7538/yzk.2012.46.suppl.0517

Atomic Energy Science and Technology > 2012 > 46(增刊): 517-521. > DOI: 10.7538/yzk.2012.46.suppl.0517

ZHAN Qin, YANG Hong-guang, ZHAO Wei-wei, YUAN Xiao-ming, HU Yong. Grazing X-ray Diffraction of Surface Oxide Films on Fe-Al/ Al₂O₃ Composite Coating[J]. Atomic Energy Science and Technology, 2012, 46(增刊): 517-521. DOI: 10.7538/yzk.2012.46.suppl.0517

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Grazing X-ray Diffraction of Surface Oxide Films on Fe-Al/ Al₂O₃ Composite Coating

China Institute of Atomic Energy, Beijing 102413, China

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Abstract

The α-2θ scanning mode of grazing incident Xray diffraction (GXRD) was employed to study the phase structure of surface oxide films for the Fe-Al/ Al₂O₃ tritium permeation barriers. The incident angles (α) were chosen from 0.1° to 5° in the experiment. After analyzing the GXRD spectra of the surface layer on the Fe-Al/ Al₂O₃ coatings under different incident angles, the results indicate that the total amount of intensity of alumina and Fe₃Al increases with the enlarge of incident angles. However, the relative intensity of alumina decreases in the same time. The reason is that the penetrable depths of X-ray through the surface layer of the Fe-Al/ Al₂O₃coating increases with the incident angle. Form the result, the best incident angle for analyzing the oxide films on the Fe-Al/ Al₂O₃ tritium permeation barriers is 0.25°. The main phase structure of the oxide films is γ-Al₂O₃ (200). In conclusion, a rapid and nondestructive testing of phase structure analysis method for the surface oxide films on the Fe-Al/ Al₂O₃ tritium permeation barriers was established in this paper.

Keywords:
tritium permeation barriers,
oxide films,
phase structure,
GXRD,
grazing incident angle

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FENG K M, PAN C H, ZHANG G S,et al. Preliminary design for a China ITER test blanket module[J]. Fusion Engineering and Design, 2006, 81(8-14): 1219-1224.

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YANG H G, ZHAN Q, ZHAO W W, et al. Study of an iron-aluminide and alumina tritium barrier coating[J]. J Nucl Mater, 2011, 417(1-3): 1237-1240.

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HOUNGNIOU C, CHEVALIER S, LARPIN J P. High temperature oxidation behavior of iron aluminide diffusion coatings[J]. Oxidation of Metals, 2006, 65(5-6): 409-439.

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FAN X M, LIAN J S, GUO Z X, et al. Microstructure and photoluminescence properties of ZnO thin films grown by PLD on Si(111) substrates[J]. Appl Surf Sci, 2005, 239(2): 176-181.

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YUBERO F, OCANA M, CABALLERO A, et al. Structural modifications produced by the incorporation of Ar within the lattice of Fe₂O₃ thin films prepared by ion beam induced chemical vapors deposition[J]. Acta Materialia, 2000, 48(18-19): 4555-4561.

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[1]	FENG K M, PAN C H, ZHANG G S,et al. Preliminary design for a China ITER test blanket module[J]. Fusion Engineering and Design, 2006, 81(8-14): 1219-1224.
[2]	WU Y C, FDS TEAM. Design status and development strategy of China liquid lithium lead blankets and related material technology [J]. J Nucl Mater B, 2007, 367-370: 1410-1415.
[3]	AIELLO A, CIAMPICHETTI A, BENAMATI G. An overview on tritium permeation barrier development for WCLL blanket concept[J]. J Nucl Mater B, 2004, 329-333: 1398-1402.
[4]	YANG H G, ZHAN Q, ZHAO W W, et al. Study of an iron-aluminide and alumina tritium barrier coating[J]. J Nucl Mater, 2011, 417(1-3): 1237-1240.
[5]	HOUNGNIOU C, CHEVALIER S, LARPIN J P. High temperature oxidation behavior of iron aluminide diffusion coatings[J]. Oxidation of Metals, 2006, 65(5-6): 409-439.
[6]	FAN X M, LIAN J S, GUO Z X, et al. Microstructure and photoluminescence properties of ZnO thin films grown by PLD on Si(111) substrates[J]. Appl Surf Sci, 2005, 239(2): 176-181.
[7]	YUBERO F, OCANA M, CABALLERO A, et al. Structural modifications produced by the incorporation of Ar within the lattice of Fe₂O₃ thin films prepared by ion beam induced chemical vapors deposition[J]. Acta Materialia, 2000, 48(18-19): 4555-4561.
[8]	KONYS J, AIELLO A, BENAMATI G, et al. Status of tritium permeation barrier development in the EU[J]. Fusion Sci Technol, 2005, 47(4): 844-850.
[9]	莫志深, 张宏放. 晶态聚合物结构和X射线衍射[M]. 北京：科学出版社,2003：360-361.

Grazing X-ray Diffraction of Surface Oxide Films on Fe-Al/ Al2O3 Composite Coating

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Grazing X-ray Diffraction of Surface Oxide Films on Fe-Al/ Al₂O₃ Composite Coating