{"title":"Improving the Oxidation Behavior of CoCrFe2Ni0.5 High Entropy Alloy Through Powder-Pack Boriding","authors":"Yiğit Garip","doi":"10.1007/s11085-024-10228-z","DOIUrl":null,"url":null,"abstract":"<div><p>The oxidation performance of CoCrFe<sub>2</sub>Ni<sub>0.5</sub> HEA borided through a powder-pack boriding process was investigated at 900 °C for 120 h. The boriding process at 900 °C for 6 h resulted in the formation of a two-zone structure: the outmost part contained a Ni<sub>2</sub>Si layer and the inner part consisted of a MB/M<sub>2</sub>B layer. The borided alloy displayed better oxidation resistance with the least oxidation rate constant value of 0.0383 (mg<sup>n</sup> cm<sup>−2n</sup> h<sup>−1</sup>). Moreover, this alloy rendered a continuous oxide layer that was denser, more compact, and contained fewer defects, which confirmed the improvement in oxidation resistance. The Ni<sub>2</sub>Si layer plus the boride layer was responsible for the enhanced oxidation performance of borided alloy.</p></div>","PeriodicalId":724,"journal":{"name":"Oxidation of Metals","volume":"101 3","pages":"549 - 571"},"PeriodicalIF":2.1000,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11085-024-10228-z.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oxidation of Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11085-024-10228-z","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}
引用次数: 0
Abstract
The oxidation performance of CoCrFe2Ni0.5 HEA borided through a powder-pack boriding process was investigated at 900 °C for 120 h. The boriding process at 900 °C for 6 h resulted in the formation of a two-zone structure: the outmost part contained a Ni2Si layer and the inner part consisted of a MB/M2B layer. The borided alloy displayed better oxidation resistance with the least oxidation rate constant value of 0.0383 (mgn cm−2n h−1). Moreover, this alloy rendered a continuous oxide layer that was denser, more compact, and contained fewer defects, which confirmed the improvement in oxidation resistance. The Ni2Si layer plus the boride layer was responsible for the enhanced oxidation performance of borided alloy.
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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