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AlYFe（x = 0、1、2原子百分比）合金的玻璃形成能力和耐腐蚀性

Glass-Forming Ability and Corrosion Resistance of AlYFe (x = 0, 1, 2 at.%) Alloys.

作者信息

Babilas Rafał, Spilka Monika, Młynarek Katarzyna, Łoński Wojciech, Łukowiec Dariusz, Radoń Adrian, Kądziołka-Gaweł Mariola, Gębara Piotr

机构信息

Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland.

Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland.

出版信息

Materials (Basel). 2021 Mar 24;14(7):1581. doi: 10.3390/ma14071581.

DOI:10.3390/ma14071581
PMID:33805029
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8036771/
Abstract

The effect of iron and yttrium additions on glass forming ability and corrosion resistance of AlYFe (x = 0, 1, 2 at.%) alloys in the form of ingots and melt-spun ribbons was investigated. The crystalline multiphase structure of ingots and amorphous-crystalline structure of ribbons were examined by a number of analytical techniques including X-ray diffraction, Mössbauer spectroscopy, and transmission electron microscopy. It was confirmed that the higher Fe additions contributed to formation of amorphous structures. The impact of chemical composition and structure of alloys on their corrosion resistance was characterized by electrochemical tests in 3.5% NaCl solution at 25 °C. The identification of the mechanism of chemical reactions taking place during polarization test along with the morphology and internal structure of the surface oxide films generated was performed. It was revealed that the best corrosion resistance was achieved for the AlYFe alloy in the form of ribbon, which exhibited the lowest corrosion current density (j = 0.09 μA/cm) and the highest polarization resistance (R = 96.7 kΩ∙cm).

摘要

研究了添加铁和钇对铸锭和熔纺带材形式的AlYFe（x = 0、1、2原子%）合金的玻璃形成能力和耐腐蚀性的影响。通过包括X射线衍射、穆斯堡尔光谱和透射电子显微镜在内的多种分析技术研究了铸锭的晶体多相结构和带材的非晶-晶体结构。证实了较高的铁添加量有助于非晶结构的形成。通过在25℃的3.5%NaCl溶液中进行电化学测试，表征了合金的化学成分和结构对其耐腐蚀性的影响。对极化测试过程中发生的化学反应机理以及生成的表面氧化膜的形态和内部结构进行了鉴定。结果表明，熔纺带材形式的AlYFe合金具有最佳的耐腐蚀性，其腐蚀电流密度最低（j = 0.09 μA/cm），极化电阻最高（R = 96.7 kΩ∙cm）。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/647f/8036771/23688aa9a3c6/materials-14-01581-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/647f/8036771/23688aa9a3c6/materials-14-01581-g008.jpg

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