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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 5    October 2003

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Joining mechanism of field-assisted diffusion bonding of solid electrolyte ceramic to metals
MENG Qing-sen(孟庆森)1, XUE Jin(薛 锦)2

1. School of Materials Science and Engineering,
Taiyuan University of Technology, Taiyuan 030024, China;
2. Research Institute of Welding of Xi′an Jiaotong University,
Xi′an 710049, China

Abstract:Field-assisted diffusion bonding applied in the joining of solid electrolyte borosilicate glass, β″-Al2O3, Y2O-ZrO2 to monocrystal silicate and aluminum were proceeded with bonding machine in the assistance of static electric field. TEM, SEM, XRD and other means were applied to investigate and analyze microstructure of interface. It is supposed that the interfacial area is a model of metal-oxides-ceramic, and the joining mechanism is solid diffusion joining and static electric bonding. The process of ions migration and accumulation under electric field is the most essential factor for the anodic oxidation and interfacial joining. Temperature and voltage are the basic factors of the solid diffusion bonding of interfacial oxidation. And voltage, temperature, pressure and the condition of surface are the most important factors that govern the bonding process.

 

Key words: solid electrolyte; ceramic; metal; composite; field-assisted bonding

ISSN 1672-7029
CN 43-1423/U

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