Wentao Duan , Tianliang Zhao , Tingping Hou , Zhongyu Cui , Yan Li , Kaiming Wu
{"title":"SS310 不锈钢在 NaCl-KCl-MgCl2 和 NaCl-KCl-CaCl2 熔盐中的腐蚀行为比较研究","authors":"Wentao Duan , Tianliang Zhao , Tingping Hou , Zhongyu Cui , Yan Li , Kaiming Wu","doi":"10.1016/j.corsci.2024.112527","DOIUrl":null,"url":null,"abstract":"<div><div>Concentrated solar power plants using chloride molten salt as heat transfer fluids imply high corrosion risks. The corrosion behaviour of SS310 stainless steel in NaCl-KCl-MgCl<sub>2</sub> and NaCl-KCl-CaCl<sub>2</sub> molten salts was comparatively studied. MgCl<sub>2</sub> exhibits remarkably higher hygroscopicity than CaCl<sub>2</sub>, inducing a significant difference in the concentration of HCl that directly results in the matrix corrosion. The hydrolysis of MgCl<sub>2</sub> produces large amounts of MgO that destroys Cr<sub>2</sub>O<sub>3</sub> film and produce less-protective MgCr<sub>2</sub>O<sub>4</sub>. Correspondingly, a heterogeneous oxide bilayer is formed in NaCl-KCl-MgCl<sub>2</sub>. In NaCl-KCl-CaCl<sub>2</sub>, a lamellar oxide layer composed of primarily Ni(Fe,Cr)<sub>2</sub>O<sub>4</sub> can effectively block the corrosive species H<sub>2</sub>O and HCl.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"241 ","pages":"Article 112527"},"PeriodicalIF":7.4000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparative study of corrosion behaviors of SS310 stainless steel in NaCl-KCl-MgCl2 and NaCl-KCl-CaCl2 molten salts\",\"authors\":\"Wentao Duan , Tianliang Zhao , Tingping Hou , Zhongyu Cui , Yan Li , Kaiming Wu\",\"doi\":\"10.1016/j.corsci.2024.112527\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Concentrated solar power plants using chloride molten salt as heat transfer fluids imply high corrosion risks. The corrosion behaviour of SS310 stainless steel in NaCl-KCl-MgCl<sub>2</sub> and NaCl-KCl-CaCl<sub>2</sub> molten salts was comparatively studied. MgCl<sub>2</sub> exhibits remarkably higher hygroscopicity than CaCl<sub>2</sub>, inducing a significant difference in the concentration of HCl that directly results in the matrix corrosion. The hydrolysis of MgCl<sub>2</sub> produces large amounts of MgO that destroys Cr<sub>2</sub>O<sub>3</sub> film and produce less-protective MgCr<sub>2</sub>O<sub>4</sub>. Correspondingly, a heterogeneous oxide bilayer is formed in NaCl-KCl-MgCl<sub>2</sub>. In NaCl-KCl-CaCl<sub>2</sub>, a lamellar oxide layer composed of primarily Ni(Fe,Cr)<sub>2</sub>O<sub>4</sub> can effectively block the corrosive species H<sub>2</sub>O and HCl.</div></div>\",\"PeriodicalId\":290,\"journal\":{\"name\":\"Corrosion Science\",\"volume\":\"241 \",\"pages\":\"Article 112527\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2024-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Corrosion Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0010938X24007224\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X24007224","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Comparative study of corrosion behaviors of SS310 stainless steel in NaCl-KCl-MgCl2 and NaCl-KCl-CaCl2 molten salts
Concentrated solar power plants using chloride molten salt as heat transfer fluids imply high corrosion risks. The corrosion behaviour of SS310 stainless steel in NaCl-KCl-MgCl2 and NaCl-KCl-CaCl2 molten salts was comparatively studied. MgCl2 exhibits remarkably higher hygroscopicity than CaCl2, inducing a significant difference in the concentration of HCl that directly results in the matrix corrosion. The hydrolysis of MgCl2 produces large amounts of MgO that destroys Cr2O3 film and produce less-protective MgCr2O4. Correspondingly, a heterogeneous oxide bilayer is formed in NaCl-KCl-MgCl2. In NaCl-KCl-CaCl2, a lamellar oxide layer composed of primarily Ni(Fe,Cr)2O4 can effectively block the corrosive species H2O and HCl.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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