Real-time observation of hydrogen absorption by LaNi5 with quasi-dynamic neutron tomography

被引：4

作者：

Wood, Bradley M. ^{[2
]}

Ham, Kyungmin ^{[1
]}

Hussey, Daniel S. ^{[3
]}

Jacobson, David L. ^{[3
]}

Faridani, Adel ^{[4
]}

Kaestner, Anders ^{[5
]}

Vajo, John J. ^{[6
]}

Liu, Ping ^{[6
]}

Dobbins, Tabbetha A. ^{[7
]}

Butler, Leslie G. ^{[2
]}

机构：

[1] Louisiana State Univ, Ctr Adv Microstruct & Devices, Baton Rouge, LA 70806 USA

[2] Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA

[3] Natl Inst Stand & Technol, Neutron Imaging Grp, Gaithersburg, MD 20899 USA

[4] Oregon State Univ, Dept Math, Corvallis, OR 97331 USA

[5] Paul Scherrer Inst, Neutron Imaging & Activat Grp, CH-5232 Villigen, Switzerland

[6] HRL Labs LLC, Malibu, CA 90265 USA

[7] Rowan Univ, Dept Phys & Astron, Glassboro, NJ 08028 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2014年 / 324卷

基金：

美国国家科学基金会;

关键词：

Neutron tomography; Dynamic tomography; Hydrogen storage;

D O I：

10.1016/j.nimb.2013.10.052

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The uptake of hydrogen by lanthanum pentanickel (LaNi5) to form lanthanum nickel hydride (LaNi5H6) is followed with three-dimensional imaging by neutron tomography. The hydrogen absorption process is slower than the time needed for acquiring a single radiograph, about 10 s, but fast relative to the time to acquire a fully-sampled tomographic data set, about 6000 s. A novel data acquisition scheme is used with angles based upon the Greek Golden ratio, a scheme which allows considerable flexibility in post-acquisition tomography reconstruction. Even with tomographic undersampling, the granular structure for the conversion of LaNi5 particles to LaNi5H6 particles is observed and visually tracked in 3D. Over the course of five sequential hydrogen uptake runs with various initial hydrogen pressures, some grains are repeatedly observed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：95 / 101

页数：7

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