Dandapat, Nandadulal and Ghosh, Sumana and Pal, Kalyan Sundar and Datta, Someswar and Guha, Bichitra Kumar (2014) Thermal cycling behavior of alumina-graphite brazed joints in electron tube applications. Transactions of Nonferrous Metals Society of China, 24 (6). pp. 1666-1673. ISSN 1003-6326

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Abstract

Alumina was joined with graphite by active metal brazing technique at 895, 900, 905, and 910 degrees C for 10 min in vacuum of 0.67 mPa using Ti-Cu-Ag (68.8Ag-26.7Cu-4.5Ti; mass fraction, %) as filler material. The brazed samples were thermal cycled between 30 and 600 degrees C and characterized. X-ray diffraction results show strong reaction between titanium and carbon as well as titanium and alumina. Scanning electron microscopy and helium leak tests show that the initial and thermal cycled brazed samples are devoid of cracks or any other defects and hermeticity in nature. Brazing strength of the joints is found to be satisfactory.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Bioceramics & Coating
Depositing User:	Bidhan Chaudhuri
Date Deposited:	10 Dec 2014 12:38
Last Modified:	10 Dec 2014 12:38
URI:	http://cgcri.csircentral.net/id/eprint/2596

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