Hydrothermal Corrosion of SiC Materials for Accident Tolerant Fuel Cladding with and Without Mitigation Coatings

Raiman, Stephen S.; Ang, Caen; Doyle, Peter J.; Terrani, Kurt A.

doi:10.1007/978-3-319-68454-3_22

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…Due to its high melting point and excellent mechanical and thermal properties, SiC can be applied in energy, aerospace, and nuclear industries [7]. SiC is a candidate material for the coating of TRISO nuclear fuel and for the Accident Tolerant Fuel Cladding (ATFC) in Pressurized Water-cooled Reactor (PWR) to enhance the inherent safety system so that the nuclear accident such as Fukushima Daiichi accident in 2011 will not be happened anymore in the future [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silica particles through conventional sol-gel and sonochemistry methods and the effect of catalyst, water concentration and sample environment to the particle size

Kamila

Ridwan

Akhir

et al. 2022

J. Phys.: Conf. Ser.

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Various methods have been carried out in an effort to obtain SiO2 (Silica) particles with relatively the same grain size distribution and a uniform shape. This fine Silica particle size will be useful in the formation of SiC in the next stage. In this works, Silica particles has been synthesized through two different methods: conventional sol-gel and sonochemistry (using ultrasonic probe). Silica was synthesized by mixing TEOS, ethanol, ammonia, and D.I water with the molar ratio of 1 : 75.9 : x : y respectively. In sol-gel method, x was varied with 2.85, 5.7, and 8.54 M while y was fixed at 61.6 M. In sonochemistry method, y was varied with 6.69, 12.3, and 75.9M while x was fixed at 2.85 M Additional variation of sample environment including with and without ice has also been done in sonochemistry method. Amorphous phase was found in all samples from the XRD profiles. FT-IR results showed that the IR spectral peaks of all samples match the FT-IR spectrum of SiO2 with symmetric and asymmetric stretching mode of Si-O functional groups at 802 – 810 cm−1 and 1093 – 1103 cm−1 wavenumber. SEM images indicated that the average of SiO2 particle size tends to increase with the higher amount of ammonia concentration used and lesser concentration of water used results in smaller particle size. The influence of sample environment in sonochemistry method showed an interesting phenomenon where a lot of small particles sticked with bigger particles.

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Section: Introductionmentioning

confidence: 99%

Synthesis of silica particles through conventional sol-gel and sonochemistry methods and the effect of catalyst, water concentration and sample environment to the particle size

Kamila

Ridwan

Akhir

et al. 2022

J. Phys.: Conf. Ser.

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“…Corrosion-resistant coatings processed using industrial technologies, such as physical vapor deposition (PVD), CVD, electrolytic deposition, and vacuum plasma spraying (VPS) have been researched [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]. Metals (such as Cr [37][38][39][40][41][42][43][44][45][46][47][48][49], Zr [37,47] and Ti [47][48][49][50]), metal-doped SiC (such as Ti-doped and Zr-doped SiC [51]) and metal nitrides (such as CrN [37][38][39][40][41][42][43], ZrN [39,40], and TiN [37,[39][40][41][42]…”

Section: Introductionmentioning

confidence: 99%

“…Preliminary work included the deposition of Cr, Zr, CrN, TiN, and ZrN coatings on SiC by PVD and VPS [36][37][38][39]. Hydrothermal corrosion testing for 1.4 × 10 6 s (400 h) without irradiation showed that Cr, CrN, and TiN coatings on SiC by PVD remained in simulated BWR-NWC environment [39,40]. Cr, CrN and TiN coatings on SiC indicated large mass loss at test durations between 2.2 × 10 6 s (600 h) and 4.0 × 10 6 s (1100 h) in simulated BWR-NWC environment, while they indicated small mass change for 4.0 × 10 6 s (1100 h) in simulated BWR-hydrogen water chemistry (HWC) environment and for 1.8 × 10 6 s (500 h) in simulated PWR environment [41].…”

Section: Introductionmentioning

confidence: 99%

Radiation Effect in Ti-Cr Multilayer-Coated Silicon Carbide under Silicon Ion Irradiation up to 3 dpa

et al. 2022

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Replacement of conventional Zircaloy fuel cladding with silicon carbide (SiC) fuel cladding is expected to significantly decrease the amount of hydrogen generated from fuel claddings by the reaction with steam during severe accidents. One of their critical issues addressed regarding practical application has been hydrothermal corrosion. Thus, the corrosion resistant coating technology using a Ti-Cr multilayer was developed to suppress silica dissolution from SiC fuel cladding into reactor coolant under normal operation. The effect of radiation on adhesion of the coating to SiC substrate and its microstructure characteristics were investigated following Si ion irradiation at 573 K up to 3 dpa for SiC. Measurement of swelling in pure Ti, pure Cr and SiC revealed that the maximum inner stress attributed to the swelling difference was generated between the coating and SiC substrate by irradiation of 1 dpa. No delamination and cracking were observed in cross-sectional specimens of the coated SiC irradiated up to 3 dpa. According to analyses using transmission electron microscopy, large void formation and cascade mixing due to irradiation were not observed in the coating. The swelling in the coating at 573 K was presumed to be caused by another mechanism during radiation such as point defects rather than void formation.

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“…They have previously compared the hydrothermal corrosion resistance of CVD SiC samples with different coatings, all of which were exposed in an autoclave of 288°C water for 400 hours. The Cr coating exhibited the least amount of mass change [ 6 ]. Some initial tests show favorable corrosion resistance of the Cr-based coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Since the nuclear accident in Japan in 2011, considerable research has been devoted to the development of accident tolerant fuel (ATF) cladding for light-water reactors (LWRs). Nowadays, SiC/SiC f ceramic matrix composites are considered as a potential material for nuclear fuel claddings in USA, Korea, France, and Japan [1][2][3][4][5][6][7][8][9][10][11]. The silicon carbide (SiC) exhibits excellent oxidation resistance under the accident conditions such as in a typical loss of coolant accident (LOCA) scenario [12][13][14][15][16], where a protective SiO 2 layer can form on the surfaces in the >1000 °C steam, preventing breakaway oxidation [17].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings

et al. 2022

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SiC-based components are sometimes susceptible to aqueous dissolution in LWR coolant environments. To address this issue, ~10 μm thick Cr coatings was deposited on reaction-bonded silicon carbide (RBSC) plates by magnetron sputtering. Corrosion behavior of Cr-coated SiC and -uncoated SiC coupons was studied by immersing in autoclave (345°C and 16.5 MPa). The weight loss of the Cr coated SiC coupons (3.02% after the 93-days) in the autoclave tests was effectively reduced due to their Cr-coated surfaces, in contrast to the uncoated ones (20.4% after the 78-days). Moreover, microstructural and compositional evolutions were examined by using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. It was revealed that a continuous and dense Cr2O3 layer formed on the surface after the hydrothermal corrosion, which can suppress the in-diffusion of corrosive medium.

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Hydrothermal Corrosion of SiC Materials for Accident Tolerant Fuel Cladding with and Without Mitigation Coatings

Cited by 5 publications

References 8 publications

Synthesis of silica particles through conventional sol-gel and sonochemistry methods and the effect of catalyst, water concentration and sample environment to the particle size

Synthesis of silica particles through conventional sol-gel and sonochemistry methods and the effect of catalyst, water concentration and sample environment to the particle size

Radiation Effect in Ti-Cr Multilayer-Coated Silicon Carbide under Silicon Ion Irradiation up to 3 dpa

Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings

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