A New Laminate Composite System: Metallic-Intermetallic Laminate Material

Abstract

Metallic-intermetallic laminate (MIL) composites consisting of alternating layers of Ta, Al and the intermetallic Al3Ta have been fabricated by reactive foil sintering in open atmospheric furnace. In this study, tantalum and aluminum foils with initial thicknesses of 250 µm were used. Sintering process has carried at 850-900 and 950 ºC for 5 and 7.5 hours under 2 MPa pressure. The aluminium foil was consumed by forming a tantalum aluminide intermetallic compound. Thus, the final microstructure consists of alternating layers of intermetallic compound and unreacted Ta metal. Microstructural characterizations of produced composites have conducted by using scaning electron microscope. Hardness values of test samples have also measured by vickers indentation method

Keywords

• Intermetallic, tantalum aluminide, laminate composite, sintering

References

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