A review on physical vapor deposition-based metallic coatings on steel as an alternative to conventional galvanized coatings

IF 2.3 4区 材料科学 Q2 Chemistry
Atasi Dan, Pavan Kumar Bijalwan, Abhishek Subhas Pathak, Amar Nath Bhagat
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引用次数: 8

Abstract

An effective way to protect the steel surface from degradation is to develop a coating on top of the steel substrate. A wide variety of coating deposition processes are available to develop protective coatings on steel. To date, several processes like hot-dip galvanization (HDG), electrogalvanization (EG), and physical vapor deposition (PVD) have been investigated. Among them, the most commonly used methods are hot-dip galvanization and electrogalvanization. HDG is used extensively due to lower cost, shorter process time, the requirement of lesser maintenance, uniform protection, and ease of deposition at a larger scale. On the other hand, EG promises in providing advantages like versatility in the coating composition, good surface finish, uniformity in the coating, lower coating thickness, etc. Although both processes provide different advantages, there are always drawbacks limiting their applications. To overcome different limitations of conventional processes and for further advancement of protective coatings, PVD has received increased attention in recent years over hot dipping and electroplating. PVD process provides a more uniform deposit, higher accuracy, very low thickness, improved adhesion, a wider choice of materials, and no environmental pollution. In this paper, we review the scope and prospect of the PVD technique for the steel industry over HDG and EG. The paper focuses on different kinds of PVD techniques, their advantages, and disadvantages. An emphasis has been given to the recent development of Zn- and Al-based PVD coatings on steel substrates. The industrial competency of PVD in the steel industry has been discussed in this article. Challenges associated with the commercialization of the process and recommendations for further improvement have been discussed.

Abstract Image

钢表面物理气相沉积金属涂层替代传统镀锌涂层的研究进展
保护钢表面不被腐蚀的有效方法是在钢基体上涂覆一层涂层。有各种各样的涂层沉积工艺可用于开发钢的保护涂层。迄今为止,热浸镀锌(HDG)、电镀锌(EG)和物理气相沉积(PVD)等几种工艺已经得到了研究。其中,最常用的方法是热镀锌和电镀锌。HDG由于成本低、工艺时间短、维护要求少、保护均匀、易于大规模沉积而得到广泛应用。另一方面,EG承诺提供诸如涂料成分的多功能性,良好的表面光洁度,涂层均匀性,涂层厚度低等优点。尽管这两种工艺都有不同的优点,但总有一些缺点限制了它们的应用。近年来,为了克服传统工艺的各种局限性和进一步发展保护涂层,PVD在热浸镀和电镀方面受到越来越多的关注。PVD工艺提供了更均匀的沉积,更高的精度,非常低的厚度,改善附着力,更广泛的材料选择,并且没有环境污染。在本文中,我们回顾了PVD技术在钢铁工业中的应用范围和前景。本文重点介绍了各种PVD技术及其优缺点。重点介绍了锌基和铝基PVD涂层在钢基体上的最新进展。本文对PVD在钢铁行业的产业竞争力进行了探讨。讨论了与该工艺商业化有关的挑战和进一步改进的建议。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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