Determining the mechanical properties of solid oxide fuel cell by an improved work of indentation approach

Determining the mechanical properties of solid oxide fuel cell by an improved work of indentation approach
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通过改进的压痕功法确定固体氧化物燃料电池的机械性能

DOI:
10.1016/j.jpowsour.2011.10.125
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发表时间:
2012-03
影响因子:
9.2
通讯作者:
zhao xiang, Wang Fenghui
zhao xiang, Wang Fenghui
中科院分区:
工程技术2区
文献类型:
--
作者:
zhao xiang, Wang Fenghui

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阳极支撑固体氧化物燃料电池(SOFC)的主要性能指标是电解质和阳极的力学性能。微米尺度的薄膜/基底结构使得硬度和弹性模量的测量变得困难。在这项工作中,提出了一种改进的工作的压痕法来确定硬度和弹性模量,并进行纳米压痕测试的半电池结构的SOFC(前和还原后)。所提出的方法的最终大范围的硬度被证明是很好的协议由奥利弗法尔方法确定的值。由于NiO-YSZ还原为Ni-YSZ,基体硬度降低了48%,弹性模量降低了34.4%。
The mechanical properties of electrolyte and anode represent the characteristic of anode-supported solid oxide fuel cells (SOFCs). The micro-scale film/substrate structure makes it difficult to measure the hardness and elastic modulus. In this work, a modified work of indentation method is proposed to determine the hardness and elastic modulus, and nanoindentation test is carried out for the half-cell structure of SOFCs (before and after reduction). The final large range of hardness from the proposed method is shown to be well agreement with the values determined by Oliver Pharr method. Because NiO-YSZ reduces to Ni-YSZ, the hardness of substrate is decreased by 48%, elastic modulus is decreased by 34.4%, respectively.
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