TY - JOUR
T1 - Electrophoretic deposition of diffusion barrier titanium oxide coatings for nuclear reactor cladding applications
AU - Firouzdor, Vahid
AU - Brechtl, Jamieson
AU - Hauch, Benjamin
AU - Sridharan, Kumar
AU - Allen, Todd R.
PY - 2013/10/1
Y1 - 2013/10/1
N2 - Development of TiO 2 diffusion barrier coating by electrophoretic deposition (EPD) has been studied to mitigate fuel-cladding chemical interactions (FCCI). Important EPD deposition parameters, including solvent, additives, particle size and crystal structure, current, and voltage were optimized for coating deposition on flat T91 ferritic steel substrates. Post-deposition sintering in the range of 850-1050 C was investigated. Diffusion characteristics of the coatings were evaluated by diffusion couple experiments at 575 C for 100 h using cerium as one of the fission products responsible for FCCI. Results showed that the coated steel exhibited up to 83% reduction in solid state inter-diffusion with cerium. Heat transfer calculations showed that the fuel center-line temperature would increase slightly due to the addition of the TiO 2 diffusion barrier coating; however, the maximum temperature still remains well below the melting point of uranium and is even lower than eutectic temperature between Fe 2 U and Fe 2 U 6 at cladding centerline and cladding/fuel interface, respectively.
AB - Development of TiO 2 diffusion barrier coating by electrophoretic deposition (EPD) has been studied to mitigate fuel-cladding chemical interactions (FCCI). Important EPD deposition parameters, including solvent, additives, particle size and crystal structure, current, and voltage were optimized for coating deposition on flat T91 ferritic steel substrates. Post-deposition sintering in the range of 850-1050 C was investigated. Diffusion characteristics of the coatings were evaluated by diffusion couple experiments at 575 C for 100 h using cerium as one of the fission products responsible for FCCI. Results showed that the coated steel exhibited up to 83% reduction in solid state inter-diffusion with cerium. Heat transfer calculations showed that the fuel center-line temperature would increase slightly due to the addition of the TiO 2 diffusion barrier coating; however, the maximum temperature still remains well below the melting point of uranium and is even lower than eutectic temperature between Fe 2 U and Fe 2 U 6 at cladding centerline and cladding/fuel interface, respectively.
KW - Coating
KW - Diffusion
KW - Electrophoretic deposition
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=84880953269&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2013.06.058
DO - 10.1016/j.apsusc.2013.06.058
M3 - Article
AN - SCOPUS:84880953269
SN - 0169-4332
VL - 282
SP - 798
EP - 808
JO - Applied Surface Science
JF - Applied Surface Science
ER -