Hydrothermal Corrosion of Coatings on Silicon Carbide in Boiling Water Reactor Conditions

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

doi:10.5006/2997

Cited by 24 publications

(8 citation statements)

References 21 publications

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“…Hydrothermal corrosion tests on a Zr-based ATF cladding indicated that a chromium (Cr) -based coating is a promising candidate [3]. Preliminary autoclave corrosion tests of Cr-coated SiC specimens also showed promising corrosion behavior [30]. In addition, a Cr coating on a SiC/SiC composite tube has been demonstrated, as shown in Figure 6 [31].…”

Section: Hydrothermal Corrosionmentioning

confidence: 96%

Systematic Technology Evaluation Program for SiC-based BWR Channel Box

Koyanagi

Katoh

2019

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Silicon carbide (SiC) -based accident-tolerant fuel (ATF) cladding of light water reactors (LWRs) has become a topic of great interest in nuclear material development since the Fukushima Dai-ichi Nuclear Power Plant accident. Extensive development of SiC cladding has identified benefits of the concept, including its inherent accident resistance and neutronic performance. Advancements achieved during the development of SiC-based ATF cladding have made it attractive for use in accident-tolerant cores of LWRs. In this document, we consider the use of SiC-based materials to replace the zirconium alloy used for the channel boxes of boiling water reactors. Both accident resistance and prevention of the bowing observed in current grades of channel boxes are needs driving the exploration of a new channel box system.

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Section: Hydrothermal Corrosionmentioning

confidence: 96%

Systematic Technology Evaluation Program for SiC-based BWR Channel Box

Koyanagi

Katoh

2019

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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%

“…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][43]) have been coated onto SiC as a surface layer. 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].…”

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%

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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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“…To our knowledge, the present work is the first time these nitrides have been combined to study their response under the working conditions of ultra-supercritical steam power generation plants. We have only found two investigations in the literature studying the oxidation resistance of these nitrides in 100% steam atmosphere, but without combining them and with an experimental procedure at much lower temperatures and much shorter exposition times [20,21]. Thus, we aim to explore the possibility of expanding the functionality of these transition metal nitrides, traditionally employed as protective coating in mechanical components, to the power plant technology sector.…”

Section: Introductionmentioning

confidence: 99%

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

Mato

Sánchez-López

Barriga

et al. 2021

Ceramics International

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Knowledge on hard coatings has been applied in the energy field extending their use as protecting coatings of steam power generation plants components. The role of the layer architecture of Cr-Ti-N based coatings deposited by reactive cathodic arc evaporation on P92 steel substrates was studied with the focus on their oxidation resistance at 650 o C in 100% steam atmosphere up to 2000 h. Characterization of the coatings was performed by gravimetry, scanning electron microscopy, electron probe microanalysis, glow discharge optical emission spectroscopy, X-ray diffraction, thermodynamic simulations using the CALPHAD method, Rockwell C indentation and nanoindentation.The layered arrangement improves the oxidation resistance of TiN under the working conditions of steam power plants, as well as the mechanical properties of CrN. The produced architectures performance under the described working conditions boosts the understanding of the processes taking place at high temperature, making possible the design of optimal coatings combine the best behavior of both nitrides for each specific application, reaching a corrosion protection at high temperature in water vapor comparable to that of CrN and a hardness and Young's modulus as high as those of TiN.

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Hydrothermal Corrosion of Coatings on Silicon Carbide in Boiling Water Reactor Conditions

Cited by 24 publications

References 21 publications

Systematic Technology Evaluation Program for SiC-based BWR Channel Box

Systematic Technology Evaluation Program for SiC-based BWR Channel Box

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

Insights into the role of the layer architecture of Cr–Ti–N based coatings in long-term high temperature oxidation experiments in steam atmosphere

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