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Vol.40, No.3, 319 ~ 325, 2002
Title
Research Papers / Environment : The Effect of Mn on the High temperature Oxidation of TiAl
박기범Ki Boem Park,박현균Hyun Gyoon Park,이동복Dong Bok Lee
Abstract
Alloys of Ti-47%Al and Ti-47%Al-1%Mn were oxidized isothermally and cyclically between 800 and 1000℃, and their oxidation characteristics were studied. Compared with Ti-47%Al, Ti-47%Al-1%Mn displayed better oxidation resistance at 800℃, slightly better oxidation resistance at 900℃, and worse oxidation resistance at 1000℃, though the scale adherence was better. Manganese tended to present at the lower part of the oxide scale which consisted primarily of an outer TiO_2 layer, and intermediate Al_2O_3-rich layer, and an inner mixed layer of (TiO_2+Al_2O_3).
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