TY - JOUR
T1 - Sealing of pores in sol-gel-derived tritium permeation barrier coating by electrochemical technique
AU - Zhang, Kun
AU - Hatano, Yuji
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research on Priority Areas, 476, Tritium for Fusion, from MEXT, Japan. The authors thank Dr. Xianghua Kong of University of Science and Technology Beijing for fruitful discussion.
PY - 2011/10/1
Y1 - 2011/10/1
N2 - An electrolytic deposition technique was applied to seal open pores in sol-gel derived ZrO2 coating and to improve barrier effects against permeation of hydrogen isotopes. Disk-type specimens of type 430 ferritic stainless steel were first covered by thin ZrO2 films (50 nm) with a conventional sol-gel technique. Then, pores in the ZrO2 film was sealed with ZrO2 or Al2O3 by cathodic processes in ethanol solution of Zr or Al nitrate and subsequent heat treatments in air. The permeation rate of hydrogen was measured at 300-600 °C. The sol-gel derived ZrO2 coatings showed only limited barrier effects; the permeation reduction factor (PRF) was about 6-800. Nevertheless, the treatments by electrolytic deposition technique resulted in considerable improvement in the barrier effects, especially at high temperature region (>500 °C), and the PRF increased to 100-1000.
AB - An electrolytic deposition technique was applied to seal open pores in sol-gel derived ZrO2 coating and to improve barrier effects against permeation of hydrogen isotopes. Disk-type specimens of type 430 ferritic stainless steel were first covered by thin ZrO2 films (50 nm) with a conventional sol-gel technique. Then, pores in the ZrO2 film was sealed with ZrO2 or Al2O3 by cathodic processes in ethanol solution of Zr or Al nitrate and subsequent heat treatments in air. The permeation rate of hydrogen was measured at 300-600 °C. The sol-gel derived ZrO2 coatings showed only limited barrier effects; the permeation reduction factor (PRF) was about 6-800. Nevertheless, the treatments by electrolytic deposition technique resulted in considerable improvement in the barrier effects, especially at high temperature region (>500 °C), and the PRF increased to 100-1000.
UR - http://www.scopus.com/inward/record.url?scp=80053594646&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2010.12.276
DO - 10.1016/j.jnucmat.2010.12.276
M3 - 学術論文
AN - SCOPUS:80053594646
SN - 0022-3115
VL - 417
SP - 1229
EP - 1232
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -