Mouton Isabelle, Breen Andrew J, Wang Siyang, Chang Yanhong, Szczepaniak Agnieszka, Kontis Paraskevas, Stephenson Leigh T, Raabe Dierk, Herbig M, Britton T Ben, Gault Baptiste
Max-Planck-Institut für Eisenforschung,Max-Planck-Straße 1, 40237 Düsseldorf,Germany.
Department of Materials,Royal School of Mines, Imperial College London,London, SW7 2AZ,UK.
Microsc Microanal. 2019 Apr;25(2):481-488. doi: 10.1017/S143192761801615X. Epub 2019 Mar 11.
Analysis and understanding of the role of hydrogen in metals is a significant challenge for the future of materials science, and this is a clear objective of recent work in the atom probe tomography (APT) community. Isotopic marking by deuteration has often been proposed as the preferred route to enable quantification of hydrogen by APT. Zircaloy-4 was charged electrochemically with hydrogen and deuterium under the same conditions to form large hydrides and deuterides. Our results from a Zr hydride and a Zr deuteride highlight the challenges associated with accurate quantification of hydrogen and deuterium, in particular associated with the overlap of peaks at a low mass-to-charge ratio and of hydrogen/deuterium containing molecular ions. We discuss possible ways to ensure that appropriate information is extracted from APT analysis of hydrogen in zirconium alloy systems that are important for nuclear power applications.
分析和理解氢在金属中的作用是材料科学未来面临的一项重大挑战，这也是原子探针断层扫描（APT）领域近期工作的一个明确目标。氘化同位素标记常被认为是通过APT实现氢定量分析的首选方法。在相同条件下，对锆合金-4进行电化学充氢和充氘，以形成大型氢化物和氘化物。我们对氢化锆和氘化锆的研究结果凸显了氢和氘准确定量分析所面临的挑战，特别是与低质荷比处的峰以及含氢/氘分子离子的峰重叠相关的挑战。我们讨论了一些可能的方法，以确保从对锆合金系统中氢的APT分析中提取到合适的信息，这些系统对核电应用至关重要。
