Thuan Dinh Nguyen, Jianqiang Zhang, David J. Young
{"title":"850 °C 时在 Ar-5H2O-(5H2) 中生长的 Cr2O3 鳞片的微观结构","authors":"Thuan Dinh Nguyen, Jianqiang Zhang, David J. Young","doi":"10.1007/s11085-024-10287-2","DOIUrl":null,"url":null,"abstract":"<div><p>Model alloy, Fe-20Cr (wt%), was oxidized in two gas mixtures Ar-5H<sub>2</sub>O-(5H<sub>2</sub>) (vol%) at 850 °C. The alloy formed Cr<sub>2</sub>O<sub>3</sub> scales in both gases. The Cr<sub>2</sub>O<sub>3</sub> scale developed faster in Ar-5H<sub>2</sub>O-5H<sub>2</sub> and contained fine pores, whilst that grown in Ar-5H<sub>2</sub>O was dense. Experiments with inert SiO<sub>2</sub> marker revealed that the Cr<sub>2</sub>O<sub>3</sub> scale growth in Ar-5H<sub>2</sub>O-(5H<sub>2</sub>) was controlled mainly by outward Cr diffusion. When adjusted for grain boundary diffusion effects, Wagner’s theory was successful in describing the hydrogen effect, provided that the Cr<sub>2</sub>O<sub>3</sub> scales are <i>n</i>-type.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 6","pages":"1277 - 1286"},"PeriodicalIF":2.1000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10287-2.pdf","citationCount":"0","resultStr":"{\"title\":\"Microstructure of Cr2O3 Scales Grown in Ar-5H2O-(5H2) at 850 °C\",\"authors\":\"Thuan Dinh Nguyen, Jianqiang Zhang, David J. Young\",\"doi\":\"10.1007/s11085-024-10287-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Model alloy, Fe-20Cr (wt%), was oxidized in two gas mixtures Ar-5H<sub>2</sub>O-(5H<sub>2</sub>) (vol%) at 850 °C. The alloy formed Cr<sub>2</sub>O<sub>3</sub> scales in both gases. The Cr<sub>2</sub>O<sub>3</sub> scale developed faster in Ar-5H<sub>2</sub>O-5H<sub>2</sub> and contained fine pores, whilst that grown in Ar-5H<sub>2</sub>O was dense. Experiments with inert SiO<sub>2</sub> marker revealed that the Cr<sub>2</sub>O<sub>3</sub> scale growth in Ar-5H<sub>2</sub>O-(5H<sub>2</sub>) was controlled mainly by outward Cr diffusion. When adjusted for grain boundary diffusion effects, Wagner’s theory was successful in describing the hydrogen effect, provided that the Cr<sub>2</sub>O<sub>3</sub> scales are <i>n</i>-type.</p></div>\",\"PeriodicalId\":724,\"journal\":{\"name\":\"Oxidation of Metals\",\"volume\":\"101 6\",\"pages\":\"1277 - 1286\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-07-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s11085-024-10287-2.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Oxidation of Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11085-024-10287-2\",\"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/s11085-024-10287-2","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}
Microstructure of Cr2O3 Scales Grown in Ar-5H2O-(5H2) at 850 °C
Model alloy, Fe-20Cr (wt%), was oxidized in two gas mixtures Ar-5H2O-(5H2) (vol%) at 850 °C. The alloy formed Cr2O3 scales in both gases. The Cr2O3 scale developed faster in Ar-5H2O-5H2 and contained fine pores, whilst that grown in Ar-5H2O was dense. Experiments with inert SiO2 marker revealed that the Cr2O3 scale growth in Ar-5H2O-(5H2) was controlled mainly by outward Cr diffusion. When adjusted for grain boundary diffusion effects, Wagner’s theory was successful in describing the hydrogen effect, provided that the Cr2O3 scales are n-type.
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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