Aluminum alloy/alumina-based ceramic interactions

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Materials Characterization

DOI:https://doi.org/10.1016/1044-5803(95)00064-X· OSTI ID:94432

Lebeau, T; Strom-Olsen, J O; Gruzleski, J E; Drew, R A.L. ^[1]

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1. McGill Univ., Montreal, Quebec (Canada)

Wetting experiments were performed on eutectic ZrO{sub 2}/Al{sub 2}O{sub 3} (ZA), ZrO{sub 2}/Al{sub 2}O{sub 3}/TiO{sub 2} (ZAT), and ZrO{sub 2}/Al{sub 2}O{sub 3}/SiO{sub 2} (ZAS) ceramic substrates with different Al alloys. Four major variables were tested to study the wetting behavior of the different ceramic-metal systems. Variable include holding time, melt temperature, ally, and ceramic compositions. An experimental setup was designed to measure in situ contact angles using the sessile drop method. For any ceramic substrate, a temperature over 950 C was necessary to observe an equilibrium wetting angle of less than 90{degree} with pure Al; by alloying the aluminum, wetting could be observed at lower temperatures ({theta} = 76--86{degree} at 900 C for Al-10 wt. % Si, {theta} {approximately}72{degree} at 850 C for Al-2.4 wt. % Mg) forming clean interfaces. Finally, ZAS specimens reacted with molten Al alloys over 900 C to produce Zr-Al based intermetallics at the metal-ceramic interface.

• OSTI ID: 94432
• Report Number(s): CONF-940793--
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 1 Vol. 35; ISSN MACHEX; ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ALUMINIUM OXIDES
AUTOMOBILES
AUTOMOTIVE INDUSTRY
COMPOSITE MATERIALS
EXPERIMENTAL DATA
FABRICATION
FIBERS
INTERFACES
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
SILICON OXIDES
TITANIUM OXIDES
USES
WEIGHT
WETTABILITY
ZIRCONIUM OXIDES