Interface science of controlled metal/metal and metal/ceramic interfaces prepared using ultrahigh vacuum diffusion bonding

Conference · Thu Apr 01 04:00:00 EST 1993

OSTI ID:10186650

King, W E; Campbell, G H; Coombs, A W; Johnson, G W; Kelly, B E; Reitz, T C; Stoner, S L; Wien, W L; Wilson, D M

We have designed, constructed, and are operating a capability for production of controlled homophase and heterophase interfaces: an ultrahigh vacuum diffusion bonding machine. This machine is based on a previous design which is operating at the Max Planck Institut fuer Metallforschung, Institut fuer Werkstoffwissenschaft, Stuttgart, FRG. In this method, flat-polished single or polycrystals of materials with controlled surfaced topography can be heat treated up to 1500C in ultrahigh vacuum. Surfaces of annealed samples can be sputter cleaned and characterized prior to bonding. Samples can then be precisely aligned crystallographically to obtain desired grain boundary misorientations. Material couples can then be bonded at temperatures up to 1500C and pressures up to 10 MPa. Results are presented from initial work on Mo grain boundaries and Cu/Al{sub 2}A{sub 3} interfaces.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10186650
• Report Number(s): UCRL-JC--113779; CONF-930405--46; ON: DE94001066
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102
ALUMINIUM OXIDES
BICRYSTALS
BONDING
COPPER
FABRICATION
GRAIN BOUNDARIES
INTERFACES
MOLYBDENUM
PRODUCTION
STRUCTURE AND PHASE STUDIES