316L金属丝电喷涂纳米晶涂层及其腐蚀性能的研究

IF 6.1 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Ye Liu, Qiuzhi Song, Pengwan Chen, Kun Huang, Yixun Yang
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引用次数: 0

摘要

摘要本文研究了金属丝电爆炸喷涂涂层的腐蚀性能。316L金属丝,直径1.5 mm作为喷涂材料,通过电爆炸喷涂在45#钢基体上制备涂层。涂层的油水腐蚀实验在60°C的恒温水浴中进行168 h.实验样品的扫描电子显微镜和能量色散光谱结果表明,在涂层内部发现了一些金属氧化物,其中大部分分布在晶粒边界,尺寸范围为30–50 nm。涂层的腐蚀速率通过失重法测量,腐蚀速率为0.079 mm/年。XRD结果表明,腐蚀产生CaCO3、Fe3O4和MgFe2O4。涂层腐蚀主要是由涂层中氧化物和非氧化物之间形成电化学腐蚀,以及在氯离子存在下的点蚀和晶间腐蚀引起的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on nanocrystalline coating prepared by electro-spraying 316L metal wire and its corrosion performance
Abstract In this work, we study the corrosion performance of coatings prepared by electrical explosion spraying of metal wires. 316L metal wire with a diameter of 1.5 mm is used as spray material, and the coating is prepared on the 45# steel substrate by electrical explosion spraying. The oil–water corrosion experiment of the coating is carried out in a constant temperature water bath of 60°C for 168 h. The scanning electron microscopy and energy-dispersive spectroscopy results of the experimental samples have shown that some metal oxides are found inside the coating, most of which are distributed at the grain boundaries with a size range of 30–50 nm. The corrosion rate of the coating is measured by weight loss method with a corrosion rate of 0.079 mm/annum. XRD results show that the corrosion generates CaCO3, Fe3O4, and MgFe2O4. Coating corrosion is mainly caused by the formation of electrochemical corrosion between oxides and non-oxides in the coating, and pitting corrosion and intergranular corrosion in the presence of chloride ions.
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来源期刊
Nanotechnology Reviews
Nanotechnology Reviews CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
11.40
自引率
13.50%
发文量
137
审稿时长
7 weeks
期刊介绍: The bimonthly journal Nanotechnology Reviews provides a platform for scientists and engineers of all involved disciplines to exchange important recent research on fundamental as well as applied aspects. While expert reviews provide a state of the art assessment on a specific topic, research highlight contributions present most recent and novel findings. In addition to technical contributions, Nanotechnology Reviews publishes articles on implications of nanotechnology for society, environment, education, intellectual property, industry, and politics.
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