Premium
Influence of alloy compositions on the halogen effect in TiAl alloys
Author(s) -
Masset P. J.,
Neve S.,
Zschau H.E.,
Schütze M.
Publication year - 2008
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200804145
Subject(s) - alloy , halogen , materials science , fluence , kinetic energy , ion implantation , oxide , composition (language) , chemical composition , range (aeronautics) , ion , analytical chemistry (journal) , metallurgy , thermodynamics , chemistry , composite material , environmental chemistry , linguistics , alkyl , physics , philosophy , organic chemistry , quantum mechanics
F‐implantation concentration profile simulations were carried out and the influence of the ion fluence, implantation energy as well as the alloy composition were investigated. For alloys with Al contents between 40 and 50 at% the conditions to get the halogen effect were assessed by thermodynamic calculations. According to the thermodynamic predictions the implantation parameters were kept constant in this composition range. The implanted alloys were exposed in laboratory air over 4000 h. With the implantation parameters used (20 keV and 1 × 10 17 F/cm 2 ), the halogen effect was found to be efficient over 4000 h. The oxide growth kinetic constants were measured and vary between 1.2 and 2.7 × 10 −13 g 2 /cm 4 /s.