The influence of implanted chromium and yttrium on the oxidation behaviour of TiAl-based intermetallics
- 1. Institute of Physics and Nuclear Techniques, Cracow (Poland)
- 2. Institute of Nuclear Physics, Cracow (Poland)
- 3. Institute for Materials in Energy Systems, Juelich (Germany). Research Centre
Description
The influence of implanted chromium and yttrium on the oxidation behaviour of Ti-50Al (at %) in air at 800oC was investigated. It was found that implanted chromium and/or yttrium leads to a decrease of the oxidation rate because an alumina scale was formed on the implanted material in the early stages of oxidation, whereas a titania-based scale grew on the non-implanted material. With increasing oxidation time the difference in oxidation behaviour between the implanted and non-implanted alloy gradually disappeared. These results show that chromium and yttrium, provided their concentration is properly chosen, can have a similar positive effect on the oxidation behaviour of TiAl-based intermetallics as they have on the oxidation behaviour of conventional Fe-, Ni-, or Co-based alumina-forming high temperature alloys. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Materials Science
- Journal Volume
- 30
- Journal Issue
- 22
- Journal Page Range
- p. 5793-5798.
- ISSN
- 0022-2461
- CODEN
- JMTSAS
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 27013347
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; CHROMIUM IONS; INTERMETALLIC COMPOUNDS; ION IMPLANTATION; OXIDATION; TITANIUM BASE ALLOYS; YTTRIUM IONS
- Descriptors DEC
- ALLOYS; CHARGED PARTICLES; CHEMICAL REACTIONS; IONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS