The commercial active brazing alloy “Incusil-ABA” was used for the bonding of diamond grits in order to assess their suitability for high performance machining tools. It was found that the microstructure of the brazing alloy matrix consisted of primary precipitates of Cu in a Ag–Cu eutectic matrix and an additional Cu–In–Ti rich intermetallic phase. Interface characterisation revealed the presence of a Ti-rich interfacial layer between the diamond and the alloy matrix. Therefore, good wettability was obtained for the embedded diamond grit particles. This intervening layer comprised nanosized cuboidal TiC which seemed to have acted as a precursor to its formation and fine metastable needles that were identified as cubic Ti3InC. Furthermore it was demonstrated that a three phase crystallographic orientation relationship had been obeyed at the interfacial region between the diamond, TiC and Ti3InC.

Melting experiments of Cu‐Sn‐Ti‐Zr filler metal powder containing cellulose nitrate and graphite, respectively, resulted in the formation of nanosized TiC particles in both Cu‐rich phase and CuSn 3 Ti 5 intermetallic regions of the alloy (see figure). The variation of the binder type and content allows to tailor the properties of the filler metals in terms of erosion resistance, decisive for a new generation of superabrasive tools.

The interfacial structure, phases and carbides have been examined in a brazing filler metal with embedded diamond grits. Brazing of superhard and superabrasive grits is of prime interest for high performance machining and precision grinding tools. The morphology of the epitaxial layers and nano-sized carbides grown at the interface between diamond and alloy matrix has been studied to illustrate the reaction mechanism which is essential for achieving better properties.

Partikelverstärkte Aktivlote: Grundlagen H. R. Elsener, H. R. Elsener Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorJ. Janczak-Rusch, J. Janczak-Rusch Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorV. Bissig, V. Bissig Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorU. E. Klotz, U. E. Klotz Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorB. Zigerlig, B. Zigerlig Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this author H. R. Elsener, H. R. Elsener Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorJ. Janczak-Rusch, J. Janczak-Rusch Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorV. Bissig, V. Bissig Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorU. E. Klotz, U. E. Klotz Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this authorB. Zigerlig, B. Zigerlig Eidgenössische Materialprüfungs- und Forschungsanstalt (EMPA), CH-8600 Dübendorf, SwitzerlandSearch for more papers by this author Book Editor(s):Prof. Dr. H.-P. Degischer, Prof. Dr. H.-P. Degischer Technische Universität Wien, Institut für Werkstoffkunde und Materialprüfung, Karlsplatz 13, A-1040 Wien, ÖsterreichSearch for more papers by this author First published: 10 July 2003 https://doi.org/10.1002/9783527609017.ch121Citations: 1 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Verbundwerkstoffe: 14. Symposium Verbundwerkstoffe und Werkstoffverbunde RelatedInformation