Ion Implantation as a Tool to Study the Oxidation Behaviour of TiAl-Based Intermetallics

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 temperatures. The effect of various elements added by ion implantation on the oxidation behaviour of near-y Ti-48Al-2Cr and Ti-48Al-2Cr-2Nb (compositions are given in at-%) in air at 800?C has been studied. Ions implanted (1017 ions/cm2) 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-0.2Si alloys in which quarternary elements were added by allowing. 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.

STROOSNIJDER Marinus Frederik;  SCHMUTZLER Hans Joachim; 

1996-07-31

JRC13436

https://publications.jrc.ec.europa.eu/repository/handle/JRC13436,