Corrosion resistance of ceramic candidates for tritium permeation barriers exposed to molten lithium

Lu, Weidong; Wang, Jing; Pu, Weihua; Li, Kaiping; He, Shengnan; Chu, Delin; Yang, Jinhong; Zhu, Yan

doi:10.1016/j.corsci.2019.108172

Cited by 21 publications

(3 citation statements)

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“…As reported, metallic nitrides were stable in a lithium corrosion situation from the perspective of thermodynamics. This is also beneficial to their application in nuclear fusion reactors [22]. As reported, Cr x N coatings are usually deposited by the magnetron sputtering method, e.g., Obrosov et al [23] deposited Cr x N coatings on the Inconel 718 superalloy, and Sidelev et al [24] fabricated multilayer CrN/Cr coatings on Zr alloy to improve its oxidation resistance.…”

Section: Introduction mentioning

confidence: 99%

Layer-structured Cr/CrxN coating via electroplating-based nitridation achieving high deuterium resistance as the hydrogen permeation barrier

Zheng

Zhou

et al. 2022

J Adv Ceram

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Hydrogen isotope permeation through structural materials is a key issue for developing nuclear fusion energy, which will cause fuel loss and radioactive pollution. Developing ceramic coatings with high thermal shock and hydrogen resistance is an effective strategy to solve this issue. In this work, a layer-structured Cr/CrxN coating was successfully fabricated by a facile electroplating-based nitridation technique, which is easy, facile, and applicable to coating complex-shaped substrates. The Cr/CrxN coating, composed of a bottom Fe/Cr interdiffusion zone, a middle Cr layer, and a top CrxN layer, exhibits high bonding strength, high anti-thermal-shock ability, and high deuterium permeation resistance. Its bonding strength achieves 43.6 MPa. The Cr/CrxN coating remains intact even after suffering 300 thermal shock cycles under a 600 °C-water condition. Through optimizing the nitridation temperature, the Cr/CrxN coating achieves a deuterium permeation reduction factor (PRF) as high as 3599 at 500 °C. Considering its scalable fabrication technique and considerable properties, the developed Cr/CrxN coating may serve as a novel high-performance hydrogen permeation barrier in various fields.

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Section: Introduction mentioning

confidence: 99%

Layer-structured Cr/CrxN coating via electroplating-based nitridation achieving high deuterium resistance as the hydrogen permeation barrier

Zheng

Zhou

et al. 2022

J Adv Ceram

View full text Add to dashboard Cite

show abstract

“…They hypothesised that silicon, carbon, and oxygen impurities at grain boundaries react with lithium and cause failure of the material, although little further detail was provided. Static immersion of high purity CVD SiC in liquid lithium at 300 • C for 20 h showed insignificant change to the specimen, however little experimental detail is given [10] and the temperature is below the operational temperature of most breeder blankets designs. The majority of prior research has primarily reported on corrosion behaviour of SiC/SiC composites based on mass changes, optical microscopy or low-magnification electron microscopy characterisation [5,9,10], which has led to a gap in the literature regarding high-resolution characterisation.…”

mentioning

confidence: 99%

“…Static immersion of high purity CVD SiC in liquid lithium at 300 • C for 20 h showed insignificant change to the specimen, however little experimental detail is given [10] and the temperature is below the operational temperature of most breeder blankets designs. The majority of prior research has primarily reported on corrosion behaviour of SiC/SiC composites based on mass changes, optical microscopy or low-magnification electron microscopy characterisation [5,9,10], which has led to a gap in the literature regarding high-resolution characterisation. Such detailed analysis is crucial to gain a mechanistic understanding of corrosion behaviour.…”

mentioning

confidence: 99%