Comparison of three different active filler metals used for brazing ceramic-to-ceramic and ceramic-to-metal joints
|Vinzenz Bissig , Jolanta Janczak-Rusch|
Empa, Materials Technology and Research (Empa), Überlandstrasse 129, Dübendorf 8600, Switzerland
Active brazing is a method for producing reliable and cost-effective ceramic-to-ceramic and ceramic-to–metal joints. The suitability of three different active filler metals Ag98.6In1Ti0.6, Cu74.5Sn14.0Ti10.0Zr1.5 and Ag59.0Cu27.25In12.5Ti1.25 for joining Si3N4/TiN composite ceramics for application at elevated temperatures (up to a maximum of 350C) was studied. Ceramic-ceramic and steel-ceramic joints were brazed and tested in bending as well as in tension up to 600C. Fractographic investigations were performed to investigate the joint failure mechanism. A Scanning Electron Microscope (SEM) with an integrated Energy Dispersive X-Ray Analysis (EDX) was used for microstructural analysis of the brazed zone. In addition, the micro-hardness was measured across the brazed zone (from one joining partner to other). The micro-hardness of the various phases of the brazing filler metal in the as-melted (in crucible) and as-brazed (in a joint) was compared.
Presentation: oral at E-MRS Fall Meeting 2005, Symposium H, by Vinzenz Bissig
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-20 09:16 Revised: 2009-06-07 00:44