Multi-scale Microstructure Characterization of Solid Oxide Fuel Cell Assemblies With Ultra Small-Angle X-Ray Scattering

被引：13

作者：

Allen, Andrew J. ^{[1
]}

Ilavsky, Jan ^{[2
]}

Braun, Artur ^{[3
]}

机构：

[1] NIST, US Dept Commerce, Gaithersburg, MD 20899 USA

[2] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA

[3] Empa Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland

来源：

ADVANCED ENGINEERING MATERIALS | 2009年 / 11卷 / 06期

关键词：

ELECTRICAL-CONDUCTIVITY; ANODE; SOFC; CERMET; SULFUR;

D O I：

10.1002/adem.200800357

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was conducted to demonstrate multi-scale microstructure characterization of solid oxide fuel cell (SOFC) assemblies with ultra small-angle X-ray scattering (SAXS). SAXS was selected to quantify structural changes, including changes in pore or particle size distribution, porosity, and internal surface area. The SAXS instrument used was based on a Bonse-Hart camera design that was able to record intensities at ultrasmall scattering angles, characterizing microstructure features. The instrument helped in scanning across 200 μm wide sample sections and mapped the porous mesostructure of the SOFC assembly with high spatial accuracy. The samples were embedded in resin and cut into slices, ground down to 80 μm thickness, and polished to allow a good X-ray transmission at the 16.9 keV X-ray energy. The scattering data was corrected for multiple scattering and modeled with two lognormal size distributions assumed to be represent the two void populations.

引用

页码：495 / 501

页数：7

共 15 条

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