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TiAl-based intermetallic alloys are being considered as structural materials for high temperature applications due to their low density and substantial mechanical strength at high temeratures. The effect of various elements added by ion implantation on the oxidation behaviour of near-gamma-Ti-48Al-2Cr and Ti-48Al-2Cr-2Nb (compositions are given in at-%) in air at 800 C has been studied. Ions implanted (10(17) ions/cm(2)) were Al, Ti, Cr, Mo, Y, Mn, Pt, Nb, and Si in case of Ti-48Al-2Cr and Nb in case of Ti-48Al-2Cr-2Nb. Comparison was made with the oxidation behaviour of Ti-48Al-2Cr-2Nb and 47Al-2Cr-0.2 Si alloys in which quarternary elements were added by alloying. It is concluded that ion implantation can serve as a research tool to study, in the frame of screening tests, the influence of various elements on the corrosion behaviour of materials.

Additional information

Authors: STROOSNIJDER M F, JRC Ispra (IT);HAANAPPEL V A C, JRC Ispra (IT);SUNDERKÖTTER J D, JRC Ispra (IT);SCHMUTZLER H J, ABB Corporate Research Center, Heidelberg (DE)
Bibliographic Reference: Article: Materials and Corrosion (1996)
Record Number: 199610872 / Last updated on: 1996-09-16
Original language: de
Available languages: de,en