{"title":"带有 CVD 铝涂层的 Mar-M247 合金的固态/熔融 Na2SO4 诱导的热腐蚀行为","authors":"Qi Hu, Shujiang Geng, Jinlong Wang, Fuhui Wang, Qingyun Sun, Siyao Xia, Yong Wu","doi":"10.1007/s11085-024-10315-1","DOIUrl":null,"url":null,"abstract":"<div><p>Aluminide coatings were prepared by chemical vapor deposition (CVD) method on Ni-based superalloy Mar-M247 to improve the corrosion resistance. The Na<sub>2</sub>SO<sub>4</sub>-induced hot corrosion behavior of Mar-M247 with and without aluminide coating was investigated at varying temperatures. The results revealed that the substrate underwent relatively mild corrosion attack at temperatures below the Na<sub>2</sub>SO<sub>4</sub> melting point, but extremely severe corrosion attack above it. The aluminide coating significantly improved the corrosion resistance of the substrate, with the formation of Al<sub>2</sub>O<sub>3</sub> scale during corrosion. The effects of both solid and molten Na<sub>2</sub>SO<sub>4</sub> on hot corrosion resistance of Mar-M247 alloy and its aluminide coating was discussed, as well as the detrimental effect of tungsten on the substrate in ‘type I’ hot corrosion.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 1 supplement","pages":"283 - 307"},"PeriodicalIF":2.1000,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Solid/Molten Na2SO4-Induced Hot Corrosion Behaviors of Mar-M247 Alloy with CVD Aluminide Coatings\",\"authors\":\"Qi Hu, Shujiang Geng, Jinlong Wang, Fuhui Wang, Qingyun Sun, Siyao Xia, Yong Wu\",\"doi\":\"10.1007/s11085-024-10315-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Aluminide coatings were prepared by chemical vapor deposition (CVD) method on Ni-based superalloy Mar-M247 to improve the corrosion resistance. The Na<sub>2</sub>SO<sub>4</sub>-induced hot corrosion behavior of Mar-M247 with and without aluminide coating was investigated at varying temperatures. The results revealed that the substrate underwent relatively mild corrosion attack at temperatures below the Na<sub>2</sub>SO<sub>4</sub> melting point, but extremely severe corrosion attack above it. The aluminide coating significantly improved the corrosion resistance of the substrate, with the formation of Al<sub>2</sub>O<sub>3</sub> scale during corrosion. The effects of both solid and molten Na<sub>2</sub>SO<sub>4</sub> on hot corrosion resistance of Mar-M247 alloy and its aluminide coating was discussed, as well as the detrimental effect of tungsten on the substrate in ‘type I’ hot corrosion.</p></div>\",\"PeriodicalId\":724,\"journal\":{\"name\":\"Oxidation of Metals\",\"volume\":\"101 1 supplement\",\"pages\":\"283 - 307\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-09-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Oxidation of Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11085-024-10315-1\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oxidation of Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11085-024-10315-1","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Solid/Molten Na2SO4-Induced Hot Corrosion Behaviors of Mar-M247 Alloy with CVD Aluminide Coatings
Aluminide coatings were prepared by chemical vapor deposition (CVD) method on Ni-based superalloy Mar-M247 to improve the corrosion resistance. The Na2SO4-induced hot corrosion behavior of Mar-M247 with and without aluminide coating was investigated at varying temperatures. The results revealed that the substrate underwent relatively mild corrosion attack at temperatures below the Na2SO4 melting point, but extremely severe corrosion attack above it. The aluminide coating significantly improved the corrosion resistance of the substrate, with the formation of Al2O3 scale during corrosion. The effects of both solid and molten Na2SO4 on hot corrosion resistance of Mar-M247 alloy and its aluminide coating was discussed, as well as the detrimental effect of tungsten on the substrate in ‘type I’ hot corrosion.
期刊介绍：
Oxidation of Metals is the premier source for the rapid dissemination of current research on all aspects of the science of gas-solid reactions at temperatures greater than about 400˚C, with primary focus on the high-temperature corrosion of bulk and coated systems. This authoritative bi-monthly publishes original scientific papers on kinetics, mechanisms, studies of scales from structural and morphological viewpoints, transport properties in scales, phase-boundary reactions, and much more. Articles may discuss both theoretical and experimental work related to gas-solid reactions at the surface or near-surface of a material exposed to elevated temperatures, including reactions with oxygen, nitrogen, sulfur, carbon and halogens. In addition, Oxidation of Metals publishes the results of frontier research concerned with deposit-induced attack. Review papers and short technical notes are encouraged.
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