Microstructure, high-temperature corrosion and steam oxidation properties of Cr/CrN multilayer coatings prepared by magnetron sputtering. (October 2021)

• Record Type: Journal Article
• Authors: Li, Zhuo; Liu, Chunhai; Chen, Qingsong; Yang, Jijun; Liu, Jiaming; Yang, Hongyan; Zhang, Wei; Zhang, Ruiqian; He, Linxin; Long, Jianping; Chang, Hong
• Is Part Of: Corrosion science. Volume 191(2021)
• Publication Date: 2021-10
• Subjects: Magnetron sputtering -- Cr/CrN multilayer coating -- High-temperature corrosion -- Steam oxidation; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2021.109755
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: The (Cr/CrN)24 multilayer coating was deposited on Zr-4 alloy by magnetron sputtering. A self-formed ZrO2 layer in (Cr/CrN)24 multilayer coating that could protect the substrate to a certain extent. The decrease of coating performance was due to more O into the coating induced by the diffusion and aggregation of N atoms. Abstract: (Cr/CrN)n multilayer coatings were prepared on Zr-4 alloy using magnetron sputtering and effects of this multilayer architecture on the microstructure, mechanical properties, surface wettability, high-temperature corrosion and resistance to steam oxidation of the (Cr/CrN)n coating were studied in detail. The (Cr/CrN)n coating designed with a multilayer architecture had excellent high-temperature corrosion resistance. Steam oxidation experiments displayed that the (Cr/CrN)24 multilayer coating exhibited excellent steam oxidation resistance under high temperature of 1200 °C. Moreover, the oxidation mechanism of the Cr/CrN coating was also discussed intensively.