TY - JOUR
T1 - Hydrothermal deposition of zirconia coatings on pre-oxidized BWR structural materials
AU - Zhou, Z. F.
AU - Chalkova, E.
AU - Lvov, S. N.
AU - Chou, P. H.
N1 - Funding Information:
This work was supported by the Electric Power Research Institute through its BWR Vessels and Internals Program. Dr S.C. Menasian of the Cornell Center for Materials Research at Cornell University is thanked for conducting the RBS analysis of coating thickness. Also, we thank Mr R. Kumar for valuable contributions to this study.
PY - 2008/9/1
Y1 - 2008/9/1
N2 - An in situ hydrothermal deposition process is being developed to apply a thin coating of zirconia onto the structural materials used in Boiling Water Reactors as a potential method for mitigating intergranular stress corrosion cracking. The process has successfully deposited ZrO2 onto as-received interior surfaces of 304 stainless steel and Alloy 600 tubes [Z.F. Zhou, E. Chalkova, S.N. Lvov, P. Chou, R. Pathania, Corros. Sci. 49 (2007) 830]. This paper discusses the application of the coating on specimens with different surface conditions: as-received; ground to remove the as-received surface; and ground and pre-oxidized. For comparable deposition parameters and for a given substrate, the different surface conditions did not influence the morphology or the thickness of the coating, but had a substantial impact on adhesion. As in our previous study, electrochemical potentials of the coated specimens in simulated BWR environment were not clearly lower than those of uncoated specimens [Zhou et al., 2007].
AB - An in situ hydrothermal deposition process is being developed to apply a thin coating of zirconia onto the structural materials used in Boiling Water Reactors as a potential method for mitigating intergranular stress corrosion cracking. The process has successfully deposited ZrO2 onto as-received interior surfaces of 304 stainless steel and Alloy 600 tubes [Z.F. Zhou, E. Chalkova, S.N. Lvov, P. Chou, R. Pathania, Corros. Sci. 49 (2007) 830]. This paper discusses the application of the coating on specimens with different surface conditions: as-received; ground to remove the as-received surface; and ground and pre-oxidized. For comparable deposition parameters and for a given substrate, the different surface conditions did not influence the morphology or the thickness of the coating, but had a substantial impact on adhesion. As in our previous study, electrochemical potentials of the coated specimens in simulated BWR environment were not clearly lower than those of uncoated specimens [Zhou et al., 2007].
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U2 - 10.1016/j.jnucmat.2008.03.026
DO - 10.1016/j.jnucmat.2008.03.026
M3 - Article
AN - SCOPUS:49849101272
SN - 0022-3115
VL - 378
SP - 229
EP - 237
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 3
ER -