Thermal behavior of iron in 6H-SiC: Influence of He-induced defects

Li, B.S.; Sen, H.S.; Daghbouj, N.; AlMotasem, A.T.; Lörinčı́k, Jan; Karlı́k, Miroslav; Ge, Fangfang; Zhang, L.; Sofer, Zdeněk; Elantyev, Ivan; Callisti, M.; Polcar, Tomáš

doi:10.1016/j.scriptamat.2022.114805

Cited by 16 publications

(5 citation statements)

References 41 publications

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“…This decrease could be due to formation of cavities as a result of He- exo -diffusion. Likewise, in the study by Li et al [ 22 ] Fe atoms were found to be trapped in cavities and forming clusters within them. Similar trapping was also observed for Ag co-implntated with He at RT after annealing at 1100 °C for 5 h [ 12 ] and for Ag and He co-implanted into SiC after annealing at 1000 °C for 5 h [ 25 ].…”

Section: Resultsmentioning

confidence: 87%

“…To fully understand the migration behaviour of different fission products (FPs) in SiC, their migration needs to be investigated in environments mimicking the nuclear environment i.e., where FPs coexist in the presence of helium at elevated temperatures. Limited work has been done on the role of helium in the migration of FPs surrogates such as Ag, Fe, Mg, Kr, and Sr, implanted into SiC [ 12 , [22] , [23] , [24] , [25] ]. However, no work has been reported on the influence of helium in the migration of FPs co-implanted into SiC.…”

Section: Introductionmentioning

confidence: 99%

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The effects of helium, strontium, and silver triple ions implanted into SiC

Ntshobeni,

Abdalla,

Mokgadi

et al. 2023

Heliyon

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Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

The effects of helium, strontium, and silver triple ions implanted into SiC

Ntshobeni,

Abdalla,

Mokgadi

et al. 2023

Heliyon

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“…Radiation damage can produce pronounced irradiation creep, void swelling and hardening due to high densities of nanoscale defects and fission products. Some fission products will diffuse from the free surface and enter into the coolant, while others form clusters and reduce the yield strength of the cladding [89,90]. Other failure phenomena of LFR claddings can be attributed to chemical compatibility issues, such as lead or LBE corrosion and fuel-cladding chemical interaction (FCCI).…”

Section: Cladding Failure Mechanismsmentioning

confidence: 99%

Cladding Failure Modelling for Lead-Based Fast Reactors: A Review and Prospects

Wang,

Yun

2023

Metals

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Lead-cooled fast reactors (LFRs) are considered one of the most promising technologies to meet the requirements introduced for advanced nuclear systems. LFRs have higher neutron doses, higher temperatures, higher burnup and an extremely corrosive environment. The failure studies of claddings play a vital role in improving the safety criteria of nuclear reactors and promoting research on advanced nuclear materials. This paper presented a comprehensive review of the extreme environment in LFRs based on the fuel performance analyses and transient analyses of reference LFRs. It provided a clear image of cladding failure, focusing on the underlying mechanisms, such as creep, rupture, fatigue, swelling, corrosion, etc., which are resulted from the motions of defects, the development of microcracks and accumulation of fission products to some extent. Some fundamental parameters and behavior models of Ferritic/Martensitic (F/M) steels and Austenitic stainless (AuS) steels were summarized in this paper. A guideline for cladding failure modelling was also provided to bridge the gap between fundamental material research and realistic demands for the application of LFRs.

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“…During the polishing process, local compression or micro-collision can occur on the microprotrusion at the polishing interface, resulting in a high flash point, temperature at the contact point and the flash point temperature of different substances varies, but in most cases it's around 1000°C [16,17]. Some scholars found that pure metal can react with silicon carbide in the friction process [18][19][20]. LIN Y C et al [21] used cast iron plate and water to polish SiC and obtained the maximum material removal rate of about 0.06 µm h -1 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the tribochemical reaction mechanism in dry-type CMP of 6H-SiC substrate

Zhang

et al. 2023

Surface Engineering

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In this paper, the tribochemical reaction mechanism between solid powder and 6H-SiC substrate was investigated. White light interferometer was used to detect surface roughness, FESEM was used to observe surface characteristics, EDS was used to detect surface elements and XRD was used to detect surface components. The tribochemical reaction mechanism of the reduced iron powder, anhydrous sodium carbonate and deionized water with 6H-SiC was analysed by the detection results. It is found that the reduced iron powder, anhydrous sodium carbonate and deionized water react with the 6H-SiC surface to form a soft interfacial transition layer which can be removed. The removal rate of the reduced iron powder is the highest at 191 nm h -1 . The surface quality decreases after polishing with the anhydrous sodium carbonate. The results of this study provide a new idea for the field of ultra-precision machining.

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Thermal behavior of iron in 6H-SiC: Influence of He-induced defects

Cited by 16 publications

References 41 publications

The effects of helium, strontium, and silver triple ions implanted into SiC

The effects of helium, strontium, and silver triple ions implanted into SiC

Cladding Failure Modelling for Lead-Based Fast Reactors: A Review and Prospects

Investigation of the tribochemical reaction mechanism in dry-type CMP of 6H-SiC substrate

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