Shukla, Mayur and Ghosh, Sumana and Dandapat, Nandadulal and Mandal, Ashis Kumar and Balla, V K (2016) Microwave-assisted brazing of alumina ceramics for electron tube applications. Bulletin of Materials Science, 39 (2). pp. 587-591. ISSN 0250-4707

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Abstract

Alumina was joined with alumina using microwave-assisted and conventional brazing methods at 960 (a similar to) C for 15 min using TiCuSil (68.8Ag-26.7Cu-4.5Ti in wt.%) as the brazing alloy. The brazed joints were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, Vickers microhardness evaluation, brazing strength measurement and helium leak test. X-ray diffraction analysis confirmed the formation of Ti-based compounds at the substrate-filler alloy interfaces of the microwave and conventionally brazed joints. The elemental compositions at the joint cross-section were determined by energy dispersive X-ray analysis. Vickers microhardness measurement indicated reliable joint performance for the microwave-assisted brazed joints during actual application in an electron tube. Brazing strength measurement and helium leak test provided the evidence for good alumina-alumina joint formation.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Bioceramics & Coating
Depositing User:	Bidhan Chaudhuri
Date Deposited:	08 Nov 2016 11:00
Last Modified:	08 Nov 2016 11:00
URI:	http://cgcri.csircentral.net/id/eprint/3684

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