Dongyao Zhang , Yun Tian , Xingye Mao , Yuxin Wang , Yanqi Zhao , Chunli Qiu , Keping Geng , Yanchun Dong , Yong Yang , Hongjian Zhao
{"title":"FeCoNiCrMnAlX 高熵合金涂层的微观结构和腐蚀行为分析","authors":"Dongyao Zhang , Yun Tian , Xingye Mao , Yuxin Wang , Yanqi Zhao , Chunli Qiu , Keping Geng , Yanchun Dong , Yong Yang , Hongjian Zhao","doi":"10.1016/j.intermet.2025.108652","DOIUrl":null,"url":null,"abstract":"<div><div>To study the corrosion behavior of high-entropy alloy coatings in alkaline solutions, FeCoNiCrMnAl<sub>0.5</sub> and FeCoNiCrMnAl<sub>1.0</sub> powders were prepared by mechanical alloying, and their coatings were coated on the surface of 316L stainless steel by plasma spraying technology. The corrosion resistance of the coatings in 1.0 mol/L NaOH solution was tested using an electrochemical workstation. The FeCoNiCrMnAl<sub>0.5</sub> coating consists of a dual phase of FCC phase and Al<sub>2</sub>O<sub>3</sub> phase, and the FeCoNiCrMnAl<sub>1.0</sub> coating consists of FCC phase, BCC phase, and Al<sub>2</sub>O<sub>3</sub> phase. In 1.0 mol/L NaOH solution, both coatings showed an obvious passivation phenomenon. The corrosion current densities of FeCoNiCrMnAl<sub>0.5</sub> coating and FeCoNiCrMnAl<sub>1.0</sub> coating were 1.006 × 10<sup>−5</sup> A/cm<sup>2</sup> and 7.051 × 10<sup>−6</sup> A/cm<sup>2</sup>, respectively, and the corrosion potentials were −0.5277V and −0.5116V, respectively, which were higher than that of the corrosion potential of 316L stainless steel of −0.6572 V. The corrosion rates were 0.529 mg/(cm<sup>2</sup>/h) and 0.671 mg/(cm<sup>2</sup>/h), respectively, both lower than the corrosion rate of 316L stainless steel of 0.878 mg/(cm<sup>2</sup>/h).</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"179 ","pages":"Article 108652"},"PeriodicalIF":4.3000,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analysis of the microstructure and corrosion behavior of FeCoNiCrMnAlX high-entropy alloy coatings\",\"authors\":\"Dongyao Zhang , Yun Tian , Xingye Mao , Yuxin Wang , Yanqi Zhao , Chunli Qiu , Keping Geng , Yanchun Dong , Yong Yang , Hongjian Zhao\",\"doi\":\"10.1016/j.intermet.2025.108652\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>To study the corrosion behavior of high-entropy alloy coatings in alkaline solutions, FeCoNiCrMnAl<sub>0.5</sub> and FeCoNiCrMnAl<sub>1.0</sub> powders were prepared by mechanical alloying, and their coatings were coated on the surface of 316L stainless steel by plasma spraying technology. The corrosion resistance of the coatings in 1.0 mol/L NaOH solution was tested using an electrochemical workstation. The FeCoNiCrMnAl<sub>0.5</sub> coating consists of a dual phase of FCC phase and Al<sub>2</sub>O<sub>3</sub> phase, and the FeCoNiCrMnAl<sub>1.0</sub> coating consists of FCC phase, BCC phase, and Al<sub>2</sub>O<sub>3</sub> phase. In 1.0 mol/L NaOH solution, both coatings showed an obvious passivation phenomenon. The corrosion current densities of FeCoNiCrMnAl<sub>0.5</sub> coating and FeCoNiCrMnAl<sub>1.0</sub> coating were 1.006 × 10<sup>−5</sup> A/cm<sup>2</sup> and 7.051 × 10<sup>−6</sup> A/cm<sup>2</sup>, respectively, and the corrosion potentials were −0.5277V and −0.5116V, respectively, which were higher than that of the corrosion potential of 316L stainless steel of −0.6572 V. The corrosion rates were 0.529 mg/(cm<sup>2</sup>/h) and 0.671 mg/(cm<sup>2</sup>/h), respectively, both lower than the corrosion rate of 316L stainless steel of 0.878 mg/(cm<sup>2</sup>/h).</div></div>\",\"PeriodicalId\":331,\"journal\":{\"name\":\"Intermetallics\",\"volume\":\"179 \",\"pages\":\"Article 108652\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2025-01-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Intermetallics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0966979525000172\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Intermetallics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966979525000172","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Analysis of the microstructure and corrosion behavior of FeCoNiCrMnAlX high-entropy alloy coatings
To study the corrosion behavior of high-entropy alloy coatings in alkaline solutions, FeCoNiCrMnAl0.5 and FeCoNiCrMnAl1.0 powders were prepared by mechanical alloying, and their coatings were coated on the surface of 316L stainless steel by plasma spraying technology. The corrosion resistance of the coatings in 1.0 mol/L NaOH solution was tested using an electrochemical workstation. The FeCoNiCrMnAl0.5 coating consists of a dual phase of FCC phase and Al2O3 phase, and the FeCoNiCrMnAl1.0 coating consists of FCC phase, BCC phase, and Al2O3 phase. In 1.0 mol/L NaOH solution, both coatings showed an obvious passivation phenomenon. The corrosion current densities of FeCoNiCrMnAl0.5 coating and FeCoNiCrMnAl1.0 coating were 1.006 × 10−5 A/cm2 and 7.051 × 10−6 A/cm2, respectively, and the corrosion potentials were −0.5277V and −0.5116V, respectively, which were higher than that of the corrosion potential of 316L stainless steel of −0.6572 V. The corrosion rates were 0.529 mg/(cm2/h) and 0.671 mg/(cm2/h), respectively, both lower than the corrosion rate of 316L stainless steel of 0.878 mg/(cm2/h).
期刊介绍：
This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.
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