Hydrogen Permeation Property of Cr2O3 Coatings Deposited by MOCVD with Different Microstructures

被引：0

作者：

He D. ^{[1
]}

Li S. ^{[1
]}

Liu X. ^{[1
]}

Stolyarov V.L. ^{[2
]}

Pavel S. ^{[3
]}

Vladislav K. ^{[3
]}

机构：

[1] Department of Energy Materials and Technology, General Research Institute for Nonferrous Metals, Beijing

[2] Physical-Chemical Technology Division, NRC Kurchatov Institute, Moscow

[3] Nikolayev Institute of Inorganic Chemistry, the Siberian Division of the Russian Academy of Science, Novosibirsk

来源：

Xiyou Jinshu/Chinese Journal of Rare Metals | 2018年 / 42卷 / 04期

关键词：

Cr[!sub]2[!/sub]O[!sub]3[!/sub; Hydrogen permeation barrier; Metal-organic chemical vapor deposition; Micro-structure;

D O I：

10.13373/j.cnki.cjrm.XY16040034

中图分类号：

学科分类号：

摘要：

Cr2O3 coatings with (110) preferred orientation and random orientation were prepared by metal-organic chemical vapor deposition (MOCVD) on 316L. Then the microstructure and phase structure of the coatings were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. The hydrogen permeation inhibition performance was investigated by gas phase deuterium permeation method. The permeability of the Cr2O3 coating with preferred orientation was P=4.58×10-6exp(-112688/RT) (mol•m-1•s-1•Pa0.5), while the permeability for random orientation coating was P=1.20×10-5exp(-102057/RT) (mol•m-1•s-1•Pa0.5). The permeation reduction factors (PRF) of the preferred orientation Cr2O3 coating was 38.2, 21.1 and 13.1 at 873, 923 and 973 K, respectively, and the PRF values for random orientation coating was only 2.6, 1.9 and 1.5. It was suggested that the crystalline grain of the preferred orientation coating was regularly arranged, so the structure of the coating was compact. While the random orientation coating possessed a crystalline grain of messy arrangement, and defects like through-hole were easily generated in the coating. The phenomenon resulted in serious decline of the hydrogen permeation performance of the coating. ©2018, Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：443 / 448

页数：5

共 21 条

[1] Ishikawa Y., Yoshimura T., Arai M., Effect of surface oxides on the permeation of deuterium through stainless steel, Vacuum, 47, 6, (1996)
[2] Yu Q.H., Hao L., Li S., He D., Liu X.P., Jiang L.J., Wang S.M., Microstructure and deuterium permeation resistance of the oxide scale prepared by initial oxidation method on vacuum solar receiver, Solid State Ionics, 231, 4, (2013)
[3] Nakamichi M., Kawamura H., Teratani T., Characterization of chemical densified coating as tritium permeation barrier, Journal of Nuclear Science and Technology, 38, 11, (2001)
[4] Michler T., Lee Y., Gangloff R.P., Naumann J., Influence of macro segregation on hydrogen environment embrittlement of SUS 316L stainless steel, International Journal of Hydrogen Energy, 34, 7, (2009)
[5] Xu X.Q., Cui J.D., Zhang Y., Yang Z.M., Preparation and hydrogen sorption performance of porous titanium getter, Chinese Journal of Rare Metals, 41, 10, (2017)
[6] Genma R., Uchida H.H., Okada N., Nishi Y., Hydrogen reactivity of Li-containing hydrogen storage materials, Journal of Alloys and Compounds, 11, (2003)
[7] Forcey K.S., Ross D.K., Simpson J.C.B., Evans D.S., Hydrogen transport and solubility in 316L and 1.4914 steels for fusion reactor applications, Journal of Nuclear Materials, 160, 2, (1988)
[8] Carta G., Natali M., Rossetto G., Zanella P., Salmaso G., Restello S., Rigato V., Kaciulis S., Mezzi A., A comparative study of Cr2O3 thin films obtained by MOCVD using three different precursors, Chemical Vapor Deposition, 11, (2005)
[9] Boorse R.S., Burlitch J.M., MOCVD route to stable, oxygen-rich, chromium oxide films and their conversion to epitaxial Cr2O3 , Chemistry of Materials, 6, 9, (1994)
[10] H?pfner C., Ellmer K., Ennaoui A., Pettenkofer C., Fiechiter S., Tributsch H., Stoichiometry-, phase-and orientation-controlled growth of polycrystalline pyrite (FeS2) thin films by MOCVD, Journal of Crystal Growth, 151, 3, (1995)

← 1 2 3 →