CeO_2掺杂对La_(0.7)Ca_(0.3)CrO_(3-δ)低温烧结及电导性能的影响

Journal of Materials Science and Engineering(2012)

Cited 22|Views44
No score
Abstract
LaCrO3基固体氧化物燃料电池(SOFC)连接材料存在难以在空气中致密化烧结、中温电导率差等缺陷。本文利用自燃烧工艺(auto-ignition process)制备La0.7Ca0.3CrO3-δ高活性粉体,掺入2%~8%(质量分数)CeO2作为烧结助剂,在1 400℃空气气氛下烧结获得了95.4%以上的高致密度,并且随着CeO2掺杂量的增加晶粒逐渐细化;掺入2%CeO2时La0.7Ca0.3CrO3-δ烧结样品的电导率最高,在空气中850℃达到52.7Scm-1,500℃时也能达到41.9Scm-1,约为同等条件下未掺杂La0.7Ca0.3CrO3-δ电导率的2.5倍,完全能够满足中温固体氧化物燃料电池连接材料的使用要求。
More
Translated text
Key words
LaCrO3,sintering ability,electrical conductivity,SOFC
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined