Microstructure and oxidation resistant of Si–NbSi2 coating on Nb substrate at 800°C and 1000°C

Fu, Tao; Chen, Luyu; Shen, Fuqiang; Zhu, Junjie

doi:10.1016/j.ceramint.2023.03.252

Cited by 26 publications

(2 citation statements)

References 46 publications

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“…12–15 Chromium-clad zirconium alloys exhibit excellent oxidation resistance in high-temperature vapours. 3,16–18 The results show that CrSi coating can effectively protect zirconium alloys in high-temperature air at 1160 °C. 19 Nitrides are used as anti-oxidation coatings because of their good anti-oxidation properties.…”

Section: Introductionmentioning

confidence: 90%

Microstructure and high-temperature oxidation behaviour of anti-oxidation coating on zirconium alloys: An overview

Chen,

Fu,

Zhang

et al. 2024

Surface Engineering

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Due to the rapid development of the nuclear industry, zirconium alloys have received more and more attention as accident-tolerant fuel for nuclear reactors. However, the oxidation rate of zirconium alloy fuel coating will increase rapidly in the high-temperature environment above 1000 °C, which leads to a catastrophic nuclear leakage event. The corrosion resistance of zirconium alloy can be significantly improved through the surface coating technology. In this work, the microstructure and phase composition evolutions of chromium coating, composite coating, multilayer coating and MAX phase coating before and after oxidation are introduced. In addition, the oxidation behaviour and failure mechanism of the surface coating of zirconium alloy were analysed and summarised. Finally, the main problems and challenges of coating on the zirconium alloy surface are summarised and prospected.

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Section: Introductionmentioning

confidence: 90%

Microstructure and high-temperature oxidation behaviour of anti-oxidation coating on zirconium alloys: An overview

Chen,

Fu,

Zhang

et al. 2024

Surface Engineering

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“…Lei [15] studied the bending and fall-off process of oxide scales according to the buckling theory of elastic beams. In addition, for the kinetics research of material oxidation, the first-order reaction and multi-stage reaction were used to describe the oxidation behavior [16][17][18][19][20]. Due to the complexity of the breakdown modes [21][22][23][24], different theories have distinct scopes of application.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Kinetics Modeling of the Isothermal Oxidation Behavior of Silicide Coatings

An,

Zhang,

Liang

et al. 2023

Coatings

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In this paper, an online apparatus was developed for isothermal thermogravimetric measurement of silicide coatings within a wide temperature range (from −180 °C to 2300 °C) based on thermogravimetric analysis. Firstly, the measuring principle and method regarding silicide coatings of this apparatus were studied. Secondly, on the basis of oxidation kinetics analysis, the intrinsic mechanism and kinetic parameters of three stages (oxidation, diffusion, and fall-off) of silicide coatings were studied, and the oxidation kinetics features were also analyzed. In addition, according to mathematical physics methods, a kinetics model of silicide coatings in different stages of oxidation was established, including parameters such as weight change, oxidation rate, oxidation time, etc. Finally, online isothermal experiments from −180 °C to 2300 °C werecarried out and analyzed. The results showed that the kinetic model established in this paper was in good agreement with the oxidation process of silicide coatings. In this paper, a complete kinetics model including different oxidation stages is proposed for the entire oxidation process of a silicide coating, revealing its oxidation mechanism. The research will play a significant role in the study of preparation technology improvement and high-temperature environment application. This paper studied two measuring methods: weight gain and weight loss measuring methods. Also, an experiment was carried out on the silicide coatings to explore the physical oxidation process between −180 °C and 2300 °C. The results proved the perfect consistency of the kinetics model proposed by this paper and the oxidation process of silicide coatings. This paper will play a significant role in the study of preparation technology enhancement and high-temperature environment application. It also provides a theoretical foundation for accelerated aging and life evaluation methods.

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Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

Dehury,

Kumar,

Joshi

et al. 2024

Adv Eng Mater

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This article reviews the oxidation behaviour of the two most significant high entropy alloy systems (HEAs) namely Cantor‐based and refractory HEAs. HEAs have been extensively researched and show potential applications in various industries, including marine engine manufacturing, chemical industry, furnaces, ducting, heat exchangers, jet engines, steam turbines, nuclear reactors and electronic devices, among others. Effect of the presence of elements such as aluminium, manganese, chromium, silicon, tantalum, vanadium etc. are studied for catalysing the oxidation of HEAs. Aluminium, chromium and silicon are reportedly found to considerably impact the oxidation kinetics and enhance the oxidation resistance. However, silicon can positively or adversely affect the oxidation resistance depending on its concentration and alloy composition. Other elements like manganese tend to adversely impact the oxidation resistance of FeCoNi‐based HEAs. Refractory elements are typically found to be not suitable for oxidation studies due to the formation of non‐protective oxide layers. However, refractory HEAs offer interesting trends both in terms of enhancing or reducing oxidation resistance depending on the alloying elements. Similarly, findings related to other elements are also presented and elaborated.This article is protected by copyright. All rights reserved.

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Microstructure and oxidation resistant of Si–NbSi2 coating on Nb substrate at 800°C and 1000°C

Cited by 26 publications

References 46 publications

Microstructure and high-temperature oxidation behaviour of anti-oxidation coating on zirconium alloys: An overview

Microstructure and high-temperature oxidation behaviour of anti-oxidation coating on zirconium alloys: An overview

Analysis and Kinetics Modeling of the Isothermal Oxidation Behavior of Silicide Coatings

Elemental Influence on Oxidation Behaviour of Cantor‐Based and Refractory High Entropy Alloys: A Critical Review

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