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Nondestructive testing of ceramic-metal joints by high-frequency ultrasound techniques

Zerstörungsfreie Prüfung von Fügestellen zwischen Keramik und Metall mit Hochfrequenz-Ultraschall
 
: Netzelmann, U.

Deutsche Glastechnische Gesellschaft -DGG-, Frankfurt/Main:
Joining Ceramics, Glass and Metal. 4th International Conference '93. Proceedings
Frankfurt/Main, 1993
pp.168-175
International Conference on Joining Ceramics, Glass and Metal <4, 1993, Königswinter>
English
Conference Paper
Fraunhofer IZFP ()
AlN; alumina; Aluminiumnitrid; Aluminiumoxid; B-Scan; C-Scan; Fügetechnik; high-frequency ultrasound; Hochfrequenzultraschall; joining technique; Keramikmetall

Abstract
A high-frequency ultrasound system for the frequency range 10-200 MHz is used to characterize the homogeneity of cermic-metal joints nondestructively by C-and B-scanning. Alumina-aluminium joints produced by friction welding, eutectic AlN-copper joints, an alumina substrate for electronics with striplines and an alumina steel foint for dental surgery have been tested. Various inhomogeneities have been found for all examples.

: http://publica.fraunhofer.de/documents/PX-26482.html