6533b86efe1ef96bd12cb5ec

RESEARCH PRODUCT

Study of titanium alloy Ti6242S oxidation behaviour in air at 560°C: Effect of oxygen dissolution on lattice parameters

J. LavkováM. BerthaudRémi ChassagnonOlivier HeintzSébastien ChevalierI. Popa

subject

Materials science020209 energyGeneral Chemical EngineeringKineticschemistry.chemical_elementTitanium alloy02 engineering and technologyGeneral Chemistry021001 nanoscience & nanotechnologyTitanium nitrideOxygenCorrosionMetalchemistry.chemical_compoundBrittlenesschemistryChemical engineering13. Climate actionvisual_art0202 electrical engineering electronic engineering information engineeringvisual_art.visual_art_medium[CHIM]Chemical SciencesGeneral Materials Science0210 nano-technologyDissolution

description

Abstract High temperature oxidation of titanium alloy Ti6242S was studied in air at 560 °C up to 10000 h. Oxidation kinetics obeys a parabolic law (kp = 8.7 × 10−15 g². cm−4.s-1). Oxygen dissolution in the metal was found to represent between 80 and 90% of the total mass gain. Thin oxide scales are mainly composed of TiO2, in top of which some alumina is present. Titanium nitride was detected as a very thin layer at the outer part of the metallic substrate. Underneath, the oxygen dissolution area was found to reach the maximum brittleness after 1000 h of oxidation.

yearjournalcountryeditionlanguage
2020-03-31Corrosion Science
https://doi.org/10.1016/j.corsci.2019.06.004