Brazing of carbon-carbon composites to Nimonic alloys
No Thumbnail Available
Identifiers
Publication date
2010-01
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Industrially produced Cf/C ceramic composites have been brazed to Nimonic alloys using a TiCuSil filler metal. In order to accommodate the different linear coefficients of expansion between ceramic and metal as well as to provide compatibility between the surfaces to be joined, the Cf/C surface was metallized through the deposition of a chromium layer. Subsequent heat treatments were carried out to develop intermediate layers of chromium carbides. Crack-free joints have been produced and shear tests show that failure occurs within the composite. At the Cf/C-filler interface a layered structure of the metallic elements is observed. Titanium is depleted from the filler zone and interacts with the carbon to form carbides. In the filler region, Ag and Cu rich regions are formed.
Description
Type
Citation
Moutis , N V , Jimenez , C , Azpiroz , X , Speliotis , T , Wilhelmi , C , Messoloras , S & Mergia , K 2010 , ' Brazing of carbon-carbon composites to Nimonic alloys ' , Journal of Materials Science , vol. 45 , no. 1 , pp. 74-81 . https://doi.org/10.1007/s10853-009-3893-x