基于像差校正 TEM 研究的铁铬合金被动膜稳定性关键因素新认识

IF 2.3 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-12-11 DOI:10.1108/acmm-09-2023-2891
B. Zhang, X.X. Wei, X.L. Ma
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引用次数: 0

摘要

目的 近年来,作者利用像差校正透射电子显微镜,在原子尺度上实现了对被动膜结构演变及其界面区的精确检测。本文旨在对决定铁铬合金被动膜稳定性的关键因素这一问题进行简要评述,以展示作者对这一问题的新理解和新观点。设计/方法/途径单晶的引入使作者能够获得清晰的金属/被动膜界面,并更好地表征界面区的结构。研究结果除被动膜本身外,界面区(包括金属/薄膜 (Me/F) 界面和相邻金属侧)也是被攻击的部位。因此,界面区的微观结构、组成和原子构型等性质是决定被动膜稳定性的关键因素之一。人们对被动膜本身的性质给予了极大的关注。相比之下,被动膜与金属之间的界面可能发挥的作用却很少被考虑在内。基于先进的高空间分辨率分析工具,作者明确了界面结构对被动膜宏观稳定性的重要作用。
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New understanding on the critical factors determining stability of passive film on Fe-Cr alloy based on aberration-corrected TEM study

Purpose

In recent years, using aberration-corrected transmission electron microscopy, the authors have achieved precisely detecting the structural evolution of passive film as well as its interface zone at atomic scale. The purpose of this paper aims to make a brief review to show the authors’ new understanding and perspective on the issue of critical factors determining stability of passive film of Fe-Cr alloy.

Design/methodology/approach

The introduction of single crystal enabled the authors to obtain a distinct metal/passive film interface and better characterize the structure of the interface region. The authors use aberration-corrected TEM to conduct cross-sectional observation and directly capture the details across the entire film at a high spatial and energy resolution.

Findings

Apart from the passive film itself, the interface zone, including metal/film (Me/F) interface and the adjacent metal side, is also the site which is attacked. Accordingly, the nature of the interface zone, such as microstructure, composition and atomic configuration, is one of the critical factors determining the stability of passive film.

Originality/value

Deciphering the critical factors determining the stability of passive film is of great significance and has been a fundamental issue in corrosion science. Great attention has been paid to the nature of the passive film itself. In contrast, the possible role of the interface between the passive film and the metal is rarely taken into account. Based on the advanced analytical tool with high spatial resolution, the authors have specified the significant role of interface structures on the macro-scale stability of passive film.

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来源期刊
Anti-corrosion Methods and Materials
Anti-corrosion Methods and Materials 工程技术-冶金工程
CiteScore
2.80
自引率
16.70%
发文量
61
审稿时长
13.5 months
期刊介绍: Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.
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