Dandapat, Nandadulal and Ghosh, Sumana and Guha, Bichitra Kumar and Datta, Someswar and Balla, Vamsi Krishna (2016) Effect of Processing Parameters on Thermal Cycling Behavior of Al2O3-Al2O3 Brazed Joints. Metallurgical and Materials Transactions B, 47 (5). pp. 2946-2953. ISSN 1073-5615

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Abstract

In the present study, alumina ceramics were active metal brazed at different temperatures ranging from 1163 K to 1183 K (890 A degrees C to 910 A degrees C) using TICUSIL (68.8Ag-26.7Cu-4.5Ti in wt pct) foil as filler alloy of different thicknesses. The brazed joints were subjected to thermal cycling for 100 cycles between 323 K and 873 K (50 A degrees C and 600 A degrees C). The microstructural and elemental composition analysis of the brazed joints were performed by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) before and after thermal cycling. Helium (He) leak test and brazing strength measurement were also conducted after thermal cycling for 100 cycles. The joint could withstand up to 1 x 10(-9) Torr pressure and brazing strength was higher than 20 MPa. The experimental results demonstrated that joints brazed at the higher temperature with thinner filler alloy produced strong Al2O3-Al2O3 joints.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Bioceramics & Coating
Depositing User:	Bidhan Chaudhuri
Date Deposited:	25 Jan 2017 12:40
Last Modified:	25 Jan 2017 12:40
URI:	http://cgcri.csircentral.net/id/eprint/3817

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