Wettability and phase formation in TiC/Al-alloys assemblies

The effect of alloying elements on the wetting behavior of TiC substrates by commercial aluminum alloys (1010, 2024, 6061, 7075) and its relation to phase formation at the metal–ceramic interface was investigated at 900 °C using a sessile drop technique. It was found that wetting behavior in Al-allo...

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Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2002-10, Vol.33 (10), p.1425-1428
Main Authors: Aguilar, E.A, León, C.A, Contreras, A, López, V.H, Drew, R.A.L, Bedolla, E
Format: Article
Language:English
Subjects:
Applied sciences
B. Microstructure
B. Wettability
D. Electron microscopy
E. Consolidation
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
Technology
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Summary:The effect of alloying elements on the wetting behavior of TiC substrates by commercial aluminum alloys (1010, 2024, 6061, 7075) and its relation to phase formation at the metal–ceramic interface was investigated at 900 °C using a sessile drop technique. It was found that wetting behavior in Al-alloys/TiC is typical of reactive systems, furthermore, wettability of TiC by pure Al-1010 was better than the alloys. Interface examination revealed the formation of Al 4C 3 in all the cases; the thickness of the reaction layer varied within the samples and was discontinuous in nature, particularly for the 7075/TiC and 6061/TiC systems, which exhibited poor wetting. The formation of alloyed phases in the ceramic surface decreased the amount of the undesirable Al 4C 3 at the metal/ceramic interface.
ISSN:1359-835X
1878-5840
DOI:10.1016/S1359-835X(02)00160-4