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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Interface Reaction Thermodynamics of AgCuTi...

Interface Reaction Thermodynamics of AgCuTi Brazing Filler Metal and Alumina Ceramic

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Abstract:

In this work, the interface reaction between Al₂O₃ ceramic and Ag_70.5Cu_27.5Ti₂ brazing filler metal at 845-860°C was investigated. Based on the data of thermodynamics and kinetics, the Gibbs free energies of the main interface reactions in the real brazing system condition were calculated. But the values of normal equilibrium reaction condition and the real interface reaction brazing system were different; and the main influential factor was the brazing temperature, and the system vacuum of brazing condition can lead the change of equilibrium constant (Kα). The results revealed that the high temperature and vacuum active brazing is a non-equilibrium interface reaction especially to titanium alloy, the vacuum and alloy liquid solution are beneficial to the brazing process, and the by-product formation of titanium-oxygen are affected by the diffusion process.

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Materials Science and Engineering Technology

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

1239-1246

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.1239

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Online since:

June 2014

Authors:

Hong Long Ning, Lin Feng Lan, Lei Wang, Jun Biao Peng, Zhi Jian Peng*, Ju Sheng Ma

Keywords:

AgCuTi Brazing Filler Metal, Alumina, Interface Reaction, Thermodynamic

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* - Corresponding Author

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