Implantation of Y- and Hf-ions into a F-doped Ni-base superalloy improving the oxidation resistance at high temperatures

Abstract

The surface modification of Ni-base alloys with low Al-contents (between 2 and 5wt.%) with fluorine leads to the formation of a protective alumina scale under high temperature service conditions. The combined implantation of fluorine and reactive elements (Y,Hf) can increase the adherence of this alumina scale needed for technical applications.