{"title":"High-Temperature oxidation effect of protective thin layers Ta/Cr coatings on Zr-1Nb alloy for corrosion-resistant components of nuclear reactors","authors":"Abdelrahman Salman, Maxim Syrtanov, Andrey Lider","doi":"10.1016/j.matlet.2024.137646","DOIUrl":null,"url":null,"abstract":"<div><div>The study investigated the electrical conductivity and the resistivity of a Zr-1Nb zirconium alloy and the oxidation effect of a Tantalum/Chromium coating under High-Temperature (HT) air oxidation. The coatings were applied using magnetron sputtering, resulting in a Ta barrier sublayer between Cr and Zr substrates. After 1100 °C oxidation for 15–60 min, the coating stopped functioning as a diffusion barrier and started to peel off. Thermoelectromotive force (ThermoEMF), and four probe point (FPP) methods were used to evaluate the structural soundness and effectiveness of the coated zirconium alloys. The findings suggest Ta/Cr coating could be used for nuclear reactor core components in emergency situations.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137646"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X24017865","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The study investigated the electrical conductivity and the resistivity of a Zr-1Nb zirconium alloy and the oxidation effect of a Tantalum/Chromium coating under High-Temperature (HT) air oxidation. The coatings were applied using magnetron sputtering, resulting in a Ta barrier sublayer between Cr and Zr substrates. After 1100 °C oxidation for 15–60 min, the coating stopped functioning as a diffusion barrier and started to peel off. Thermoelectromotive force (ThermoEMF), and four probe point (FPP) methods were used to evaluate the structural soundness and effectiveness of the coated zirconium alloys. The findings suggest Ta/Cr coating could be used for nuclear reactor core components in emergency situations.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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