New phases in the ternary Cu–Ti–Sn system

Cu–Sn–Ti alloys are used as binders for diamond tools processed by liquid phase sintering. The design of the processing requires data on the phase constitution of the alloy. Little information is available on the ternary Cu–Ti–Sn phase diagram. Some data reported the possible existence of two ternar...

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Bibliographic Details
Published in:Journal of alloys and compounds 2001-04, Vol.317, p.363-366
Main Authors: Hamar-Thibault, S., Allibert, C.H.
Format: Article
Language:English
Subjects:
Composition
Crystal structure
Ti 5Sn 3Cu
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Summary:Cu–Sn–Ti alloys are used as binders for diamond tools processed by liquid phase sintering. The design of the processing requires data on the phase constitution of the alloy. Little information is available on the ternary Cu–Ti–Sn phase diagram. Some data reported the possible existence of two ternary phases: a ternary Ti–Sn rich phase and the compound Cu 2SnTi with a cubic structure. The present work was the experimental determination of the phase constitution in the composition range between the lines Cu–Ti 3Sn and Cu–Ti 6Sn 5. One new ternary phase — characterised by electron probe microanalysis and by X-ray diffraction — has the stoichiometry Ti 5Sn 3Cu. Its crystallographic structure has an hexagonal symmetry and is related to those of the binary phases Ti 5Sn 3 and Ti 6Sn 5 that belong to the Mn 5Si 3 family. The compound Ti 5Sn 3Cu is present in all the multiphase fields identified in the composition range under investigation.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(00)01439-0