{"title":"Influence of the microstructure on hydrogen diffusion in FeZr alloys","authors":"C.U. Maier, H. Kronmüller","doi":"10.1016/0022-5088(91)90189-B","DOIUrl":null,"url":null,"abstract":"<div><p>The influence of the microstructure on the relaxation behaviour of hydrogen in partially crystallized nano- and microcrystalline Fe<sub>90</sub>Zr<sub>10</sub> as well as in single-phase Fe<sub>2</sub>Zr was investigated in the temperature range between 4.2 and 500 K by means of magnetic after-effect measurements. Reorientation processes of hydrogen in amorphous, grain boundary and crystalline phases led to characteristic relaxation maxima and activation enthalpies which were assigned to hydrogen jumps between anisotropic interstitial sites within the different structures. In addition, the degassing kinetics above 300 K were studied and allow a more detailed correlation between relaxation processes and microstructures.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"172 ","pages":"Pages 671-677"},"PeriodicalIF":0.0000,"publicationDate":"1991-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90189-B","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The Less Common Metals","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/002250889190189B","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
The influence of the microstructure on the relaxation behaviour of hydrogen in partially crystallized nano- and microcrystalline Fe90Zr10 as well as in single-phase Fe2Zr was investigated in the temperature range between 4.2 and 500 K by means of magnetic after-effect measurements. Reorientation processes of hydrogen in amorphous, grain boundary and crystalline phases led to characteristic relaxation maxima and activation enthalpies which were assigned to hydrogen jumps between anisotropic interstitial sites within the different structures. In addition, the degassing kinetics above 300 K were studied and allow a more detailed correlation between relaxation processes and microstructures.
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