气相涂层增强低碳钢的耐蚀性

IF 1.1 Q4 ENGINEERING, MECHANICAL
Sameer K. Fayyadh
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引用次数: 0

摘要

提高低碳钢的耐蚀性对延长低碳钢的使用寿命非常重要,而涂层工艺是实现这一目标的方法之一,也是提高金属和合金表面耐蚀性等性能的表面处理中最重要的方法。采用气相涂层技术对低碳钢进行氮化和纳米锌涂层,以提高其抗腐蚀性能。这个过程包括添加两层。第一层是通过沉淀氮气添加氮化物层,第二层是通过沉淀Zn添加锌层。在不同时间(5分钟、10分钟和15分钟)进行沉淀过程。进行了扫描电子显微结构(SEM)、x射线衍射(XRD)和腐蚀试验。SEM和XRD结果表明,随着C3N4、Zn(N3)2、γN等新相的出现,复合材料的微观结构发生了变化。此外,腐蚀试验结果表明,通过降低腐蚀速率(CR)和腐蚀电流密度(icorr),涂层样品的耐蚀性显著提高,腐蚀速率(CR)和腐蚀电流密度(icorr)分别达到(1.598x10-3 mmpy)和(1.422x10-7 Amp/cm2),而母材的腐蚀速率和腐蚀电流密度分别为1.803×10-1和1.604x10-5。腐蚀防护效率(CPE)也有明显提高,达到99.11%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Corrosion Resistance Enhancement for Low Carbon Steel by Gas Phase Coating
Corrosion Resistance Enhancement for low carbon steel is very important to extend its life service, the coating process is one of the methods which can using to achieve this, and it's the most important in surface treatments to improve the properties of metals and alloys surfaces such as corrosion resistance. In this work, low carbon steel was nitrided and coated with nano zinc using gas phase coating technical, to enhance the resistance of corrosion. The process included adding two layers. The first, a nitride layer, was added by precipitating nitrogen (N) gas, and the second, a zinc (Zn) layer, was added by precipitating Zn. The process of precipitating was carried out at different periods (5, 10, and 15 minutes). Scan electron microstructure (SEM), X-ray diffraction (XRD) and corrosion tests were carried out. The SEM and XRD results showed a new microstructure with the emergence of new phases (C3N4, Zn(N3)2, and γN). Also, the results of the corrosion test showed a significant improvement in corrosion resistance through a reduction in the corrosion rate (CR) and corrosion current density (icorr) which reached (1.598x10-3 mmpy) and (1.422x10-7 Amp/cm2) respectively, for coated samples, compared with 1.803×10-1 and 1.604x10-5, respectively, for the base metal. also found an appreciable increase in corrosion protection efficiency (CPE), which reached 99.11%.
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来源期刊
自引率
0.00%
发文量
42
审稿时长
20 weeks
期刊介绍: The Journal of Mechanical Engineering & Sciences "JMES" (ISSN (Print): 2289-4659; e-ISSN: 2231-8380) is an open access peer-review journal (Indexed by Emerging Source Citation Index (ESCI), WOS; SCOPUS Index (Elsevier); EBSCOhost; Index Copernicus; Ulrichsweb, DOAJ, Google Scholar) which publishes original and review articles that advance the understanding of both the fundamentals of engineering science and its application to the solution of challenges and problems in mechanical engineering systems, machines and components. It is particularly concerned with the demonstration of engineering science solutions to specific industrial problems. Original contributions providing insight into the use of analytical, computational modeling, structural mechanics, metal forming, behavior and application of advanced materials, impact mechanics, strain localization and other effects of nonlinearity, fluid mechanics, robotics, tribology, thermodynamics, and materials processing generally from the core of the journal contents are encouraged. Only original, innovative and novel papers will be considered for publication in the JMES. The authors are required to confirm that their paper has not been submitted to any other journal in English or any other language. The JMES welcome contributions from all who wishes to report on new developments and latest findings in mechanical engineering.
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