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Project leaders: Prof. Dr. W. Maus-Friedrichs, Dr.-Ing. habil. Kai Möhwald (IW Hannover)
Funding period: 11/2014 - 10/2017
Funding body: DFG
Funding code: MA 1893/24-1
Researcher: M.Sc. Cornelia Kunz
Laboratory rooms: 0.5 (CZM), 410N (IEPT)
This project is a joint project of the IEPT (Clausthal University of Technology) and the IW (Leibniz University Hannover) under the umbrella of the Clausthal Center for Materials Technology. Together, the mechanisms of deoxidation during the vacuum brazing of steels are to be clarified. Preliminary work has shown that the deoxidation behavior of different steels differs greatly.
In order to be able to optimize future brazing processes, a reaction chamber is being constructed in which the conditions that prevail during an industrial vacuum brazing process can be simulated. Steel samples prepared in this chamber can be examined for their surface composition and properties without atmospheric contact, allowing direct conclusions to be drawn about the influence of temperature during the brazing process. In addition, the influence of different gases is to be investigated, so it is planned to simulate brazing processes in a silane-doped argon rough vacuum.
All experiments will be carried out in parallel in the reaction chamber at the IEPT and a vacuum brazing furnace at the IW, and the results will then be compared. Based on the findings, a physical model will be developed that allows predictions to be made for brazing processes.
Further information can be found here.