Graphite-nimonic alloy brazing

N. V. Moutis, C. Jimenez, T. Speliotis, X. Azpiroz, K. Mergia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

A graphite sheet has been successfully brazed to a Nimonic 105 superalloy using a commercial TiCuSil paste. A chromium layer was deposited on the graphite surface by sputtering and controlled heat treatments were employed in order to develop a suitable microstructure. Scanning electron microscopy measurements showed rough, crack-free interfaces between the filler metal and both the graphite and nimonic parts. From metallographic examination a well defined layered structure of the metallic elements close to the filler/graphite interface has been found. The metallic elements transport from the interface to the carbon bulk where they fill all the graphite pores up to a depth up of 50 μrn and form a layered structure within the pores.

Original languageEnglish
Title of host publication1st International Conference on New Materials for Extreme Environments
Pages209-213
Number of pages5
DOIs
Publication statusPublished - 2009
Event1st International Conference on New Materials for Extreme Environments - San Sebastian, Spain
Duration: 2 Jun 20084 Jun 2008

Publication series

NameAdvanced Materials Research
Volume59
ISSN (Print)1022-6680

Conference

Conference1st International Conference on New Materials for Extreme Environments
Country/TerritorySpain
CitySan Sebastian
Period2/06/084/06/08

Keywords

  • Brazing
  • Chromium carbide
  • Graphite
  • Nimonic alloys

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