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DOI	10.1126/science.aal2418
	Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel
	Chen Y.-S.; Haley D.; Gerstl S.S.A.; London A.J.; Sweeney F.; Wepf R.A.; Rainforth W.M.; Bagot P.A.J.; Moody M.P.
发表日期	2017
ISSN	0036-8075
起始页码	1196
结束页码	1199
卷号	355 期号:6330
英文摘要	The design of atomic-scale microstructural traps to limit the diffusion of hydrogen is one key strategy in the development of hydrogen-embrittlement-resistant materials. In the case of bearing steels, an effective trapping mechanism may be the incorporation of finely dispersed V-Mo-Nb carbides in a ferrite matrix. First, we charged a ferritic steel with deuterium by means of electrolytic loading to achieve a high hydrogen concentration. We then immobilized it in the microstructure with a cryogenic transfer protocol before atom probe tomography (APT) analysis. Using APT, we show trapping of hydrogen within the core of these carbides with quantitative composition profiles. Furthermore, with this method the experiment can be feasibly replicated in any APT-equipped laboratory by using a simple cold chain. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	deuterium; hydrogen; iron; steel; vanadium; design method; deuterium; electrolyte; electron; experimental study; ferrite; hydrogen; laboratory method; microstructure; steel; Article; desorption; heat treatment; metallurgy; neutron; neutron scattering; priority journal; simulation; tomography
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243309
作者单位	Department of Materials, Oxford University, 16 Parks Road, Oxford, OX1 3PH, United Kingdom; Scientific Center for Optical and Electron Microscopy, ETH Zürich, Auguste-Piccard-Hof 1, Zürich, 8093, Switzerland; Department of Materials Science and Engineering, Sheffield University, Western Bank, Sheffield, S10 2TN, United Kingdom; Centre for Microscopy and Microanalysis, Faculty of Science, University of Queensland, Brisbane, QLD 4072, Australia
推荐引用方式 GB/T 7714	Chen Y.-S.,Haley D.,Gerstl S.S.A.,et al. Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel[J],2017,355(6330).
APA	Chen Y.-S..,Haley D..,Gerstl S.S.A..,London A.J..,Sweeney F..,...&Moody M.P..(2017).Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel.Science,355(6330).
MLA	Chen Y.-S.,et al."Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel".Science 355.6330(2017).