期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 36, 期 16, 页码 4185-4196出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2016.05.022
关键词
Transparent YAG; Interface structure; Metal-ceramic joining; Active element
资金
- RITMARE Flagship Project-MIUR [SP1-WP5-AZ1-UO09]
The YAG/filler/Ti6Al4V system has been studied for the first time with the aim of producing brazed optical windows. Different fillers (AgCuTi, AgCu, Ag) and temperatures have been taken into account and the interfacial zones of the samples have been evaluated in terms of morphology and compositions. A thin and continuous metal-ceramic layer containing Ti is formed in contact with the YAG ensuring the adhesion between all the joined materials. The best joining results have been obtained at 850 degrees C, where we have observed the formation of an interfacial CuTi layer when AgCuTi and Ag have been used. No intermetallic compound formation was observed using the pure Ag at 970 degrees C and 1050 degrees C. The phase formation was interpreted using the CALPHAD method by means of recalculated Ag-Cu-Ti and Ag-Al-Ti isothermal sections. Microhardness tests have been conducted to evaluate the performances of the joints in terms of mechanical properties. (C) 2016 Elsevier Ltd. All rights reserved.
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