Wetting of HIP AlN-TiB2 ceramic composites by liquid metals and alloys

Davide Mattia, Martine Desmaison-Brut, Daniel Tetard, Jean Desmaison

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A non-oxide ceramic composite family was developed via hot isostatic pressing (HIP) without sintering aids. Fully dense (rrel > 99%) aluminum nitride-based samples, with titanium diboride as secondary phase, were designed to be elec. discharge machining (EDM) compatible. Wetting expts. via the sessile drop method, in vacuum atm., have been performed on three different grades of an AlN-TiB2 ceramic composite. Contact angle and work of adhesion evolutions with time and temp. were investigated. In the case of non-reactive wetting, both copper and silver showed a non-wetting behavior, as well as Cu/Ag alloys. A wetting behavior was, instead, obsd. for Cu/Ag/Ti brazing alloys. Reactive wetting was obsd. in the case of nickel. Corrosion was due to Ni diffusion into the ceramic and dissoln. of aluminum-based phases in the metal melt.
Original languageEnglish
Pages (from-to)1797-1803
Number of pages7
JournalJournal of the European Ceramic Society
Volume25
Issue number10
Publication statusPublished - 2005

Keywords

  • Wetting
  • Brazes
  • Contact angle
  • Ceramic composites
  • Work of adhesion (wetting of hot isostatically pressed AlN-TiB2 ceramic composites by liq. metals and alloys)
  • wetting aluminum nitride titanium boride ceramic composite copper silver

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