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无机材料学报

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2006 , Vol. 21 >Issue 5: 1141 - 1146

DOI: https://doi.org/10.3724/SP.J.1077.2006.01141

研究论文

SrCo0.8Fe0.2O3-δ及SrCo0.8Fe0.1Sn0.1O3-δ的热学性能与透氧性能研究

  • 樊传刚 ,
  • 刘卫 ,
  • 左艳波 ,
  • 邓增强 ,
  • 黄祥贤 ,
  • 陈初升
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  • 1. 中国科学技术大学材料科学与工程系, 合肥 230006; 2. 安徽工业大学材料工程学院, 马鞍山 243002

收稿日期: 2005-09-20

  修回日期: 2005-11-16

  网络出版日期: 2006-09-20

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Thermal Stability and Oxygen Separation Properties of
SrCo0.8Fe0.2O3-δand SrCo0.8Fe0.1Sn0.1O3-δCeramic Membranes

  • FAN Chuan-Gang ,
  • LIU Wei ,
  • ZUO Yan-Bo ,
  • DENG Zeng-Qiang ,
  • HUANG Xiang-Xian ,
  • CHEN Chu-Sheng
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  • 1. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230006, China; 2. School of Materials Engineering, Anhui University of Technology, Maanshan 243002, China

Received date: 2005-09-20

  Revised date: 2005-11-16

  Online published: 2006-09-20

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摘要

介绍了对SrCo0.8Fe0.2O3-δ及SrCo0.8Fe0.1Sn0.1O3-δ两种透氧膜材料相组成、热学性能及氧渗透性能的研究, 发现实验中获得的SrCo0.8Fe0.2O3-δ透氧膜材料具有长期的相组成稳定性; 在它的B位进一步用Sn取代Fe，获得名义组成SrCo0.8Fe0.1Sn0.1O3-δ样品, 具有典型的双相组成特征. 与单相SrCo0.8Fe0.2O3-δ相比, 双相结构SrCo0.8Fe0.1Sn0.1O3-δ样品的热膨胀率降低, 抗热冲击性能增加显著; 同时, 氧渗透性能也有一定程度的提高, 如1.2mm厚的SrCo0.8Fe0.2O3-δ陶瓷膜样品在1000℃具有1.87×10-6mol cm-2 s-1的透氧率(PO2(h)=2.09×104Pa, PO2(l)=1.2×103Pa), 同样条件下的SrCo0.8Fe0.1Sn0.1O3-δ样品透氧率为2.49×10-6 mol cm-2 s-1.

关键词： 氧渗透; 钙钛矿结构; 陶瓷膜; 抗热冲击性能

本文引用格式

樊传刚 , 刘卫 , 左艳波 , 邓增强 , 黄祥贤 , 陈初升 . SrCo0.8Fe0.2O3-δ及SrCo0.8Fe0.1Sn0.1O3-δ的热学性能与透氧性能研究[J]. 无机材料学报, 2006 , 21(5) : 1141 -1146 . DOI: 10.3724/SP.J.1077.2006.01141

Abstract

The phase composition, thermal shocking resistance and the separating properties
of both SrCo0.8Fe0.2O3-δ(SCF) and SrCo0.8Fe0.1Sn0.1O3-δ (SSCF) membranes were investigated systematically. It was found the as
prepared SCF had long-term phase stability, and the SSCF had the composite feature with dual phase composition. As compared with the SCF, the SSCF had a more promoted thermal shocking resistance, which related to the decreasing of thermal expansion coefficient of it in comparison with the former. Furthermore, a permeation rate of 1.87×10-6 mol cm-2 s-1 was obtained on the as-prepared SCF membrane at 1000℃ and under oxygen partial pressure gradient of the PO2(h)/PO2(l)=0.209atm /0.012atm,
and at the same measuring condition, the permeability was 2.49×10-6 mol cm-2 s-1 for the as prepared SSCF one.

Key words： oxygen permeation; perovskite structure; ceramic membrane; thermal shocking resistance

参考文献

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