利用X光无损检测SOFC金属封接的实验研究

doi:10.3969/j.issn.0253-2778.2017.12.005

中国科学技术大学学报 ›› 2017, Vol. 47 ›› Issue (12): 1002-1005.DOI: 10.3969/j.issn.0253-2778.2017.12.005

利用X光无损检测SOFC金属封接的实验研究

师伟伟，谢斌

中国科学技术大学合肥微尺度物质科学国家实验室，安徽合肥 230026

收稿日期:2016-05-13 修回日期:2016-06-17 出版日期:2017-12-30 发布日期:2017-12-30
通讯作者: 谢斌
作者简介:师伟伟，男，1989年生，硕士.研究方向：固体氧化物燃料电池.E-mail:sww1113@mail.ustc.edu.cn

Study on X-ray nondestructive testing of SOFC metal brazing

SHI Weiwei, XIE Bin

Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026,China）

Received:2016-05-13 Revised:2016-06-17 Online:2017-12-30 Published:2017-12-30

摘要/Abstract

摘要： 为了解决管板式（平板式）固体氧化物燃料电池的密封问题，在大气中使用95AgCu焊料片对单电池片和金属连接体进行了封接实验.利用X光无损检测技术对比分析了95AgCu焊料片和粉状焊膏的区别，并通过单电池的寿命测试对焊接质量进行了评价.结果表明：利用X光无损检测结果，可以优化焊接工艺，实现用成型焊片形成高质量、无孔隙的焊缝；在750 ℃下，测量了120 h内开路电压和单电池功率，它们基本没有变化，说明本钎焊材料和工艺适合SOFC堆的密封.

关键词: 固体氧化物燃料电池, 空气原位钎焊, 封接技术, X光无损检测

Abstract: In order to solve the sealing problems of tube plate type (plate type) solid oxide fuel cell(SOFC), 95AgCu solder was used to seal single cell and interconnector by air brazing. The difference between 95AgCu solder and powder was analyzed by X-ray nondestructive testing and the welding quality was evaluated through life test of single cells. Results show that the use of X-ray nondestructive test can not only optimize the welding process, but also form high-quality and imporous weld utilizing a forming welding piece. Measured open circuit voltage and single cell power within 120 h at 750 ℃ show that brazing materials and the process are suitable for sealing the SOFC stack.

Key words: solid oxide fuel cell, air brazing, sealing technic, X-ray nondestructive testing

中图分类号:

TM911.4

师伟伟，谢斌. 利用X光无损检测SOFC金属封接的实验研究[J]. 中国科学技术大学学报, 2017, 47(12): 1002-1005.

SHI Weiwei, XIE Bin. Study on X-ray nondestructive testing of SOFC metal brazing[J]. Journal of University of Science and Technology of China, 2017, 47(12): 1002-1005.

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利用X光无损检测SOFC金属封接的实验研究

Study on X-ray nondestructive testing of SOFC metal brazing

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