Oxidation behaviour of a fluorinated beta-stabilized γ-TiAl alloy with thermal barrier coatings in H2O- and SO2-containing atmospheres

被引：24
作者：
Friedle, Simone [1 ]
Laska, Nadine [2 ]
Braun, Reinhold [2 ]
Zschau, Hans-Eberhard [1 ]
Galetz, Mathias C. [1 ]
Schuetze, Michael [1 ]
机构：
[1] DECHEMA Forschungs Inst, D-60486 Frankfurt, Germany
[2] Inst Mat Res, German Aerosp Ctr, DLR, D-51170 Cologne, Germany
来源：
CORROSION SCIENCE | 2015年 / 92卷
关键词：
Intermetallics; Thermal cycling; Oxidation; RESISTANCE;
D O I：
10.1016/j.corsci.2014.11.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation behaviour of a novel thermal barrier coating (TBC) system on a beta-stabilized TiAl alloy was investigated at 900 degrees C in air containing water vapour and sulphur dioxide. This recently developed system consists of a 7 wt.% yttria partially stabilized zirconia topcoat deposited on fluorine-treated and pre-oxidized TNM-B1 substrate material. During thermal cycling at 900 degrees C in atmospheres containing either 10 vol.% H2O or 0.5 vol.% SO2, no spallation of the TBCs was observed for exposure periods exceeding 1000 cycles of 1 h dwell time. Fluorinated samples without TBCs showed similar oxidation behaviour, whereas the untreated TNM-B1 alloy revealed significant oxidation. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 286
页数：7
相关论文
共 24 条
  • [1] Appel F., 2003, Titanium and Titanium Alloys, P89, DOI DOI 10.1002/3527602119.CH4
  • [2] MECHANISM OF ISOTHERMAL OXIDATION OF THE INTERMETALLIC TIAL AND OF TIAL ALLOYS
    BECKER, S
    RAHMEL, A
    SCHORR, M
    SCHUTZE, M
    [J]. OXIDATION OF METALS, 1992, 38 (5-6): : 425 - 464
  • [3] Design of novel β-solidifying TiAl alloys with adjustable β/B2-phase fraction and excellent hot-workability
    Clemens, Helmut
    Wallgram, Wilfried
    Kremmer, Sascha
    Guether, Volker
    Otto, Andreas
    Bartels, Arno
    [J]. ADVANCED ENGINEERING MATERIALS, 2008, 10 (08) : 707 - 713
  • [4] Formation of Z-Ti50Al30O20 in the sub-oxide zones of γ-TiAl-based alloys during oxidation at 1000°C
    Copland, EH
    Gleeson, B
    Young, DJ
    [J]. ACTA MATERIALIA, 1999, 47 (10) : 2937 - 2949
  • [5] Gamma titanium aluminide alloys - an assessment within the competition of aerospace structural materials
    Dimiduk, DM
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 263 (02): : 281 - 288
  • [6] Improving the oxidation resistance of γ-titanium aluminides by halogen treatment
    Donchev, A.
    Schuetze, M.
    [J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2008, 59 (06): : 489 - 493
  • [7] Improvement of the oxidation behaviour of TiAl-alloys by treatment with halogens
    Donchev, A.
    Richter, E.
    Schuetze, M.
    Yankov, R.
    [J]. INTERMETALLICS, 2006, 14 (10-11) : 1168 - 1174
  • [8] Thermodynamic considerations of the beneficial effect of halogens on the oxidation resistance of TiAl-based alloys
    Donchev, A
    Gleeson, B
    Schütze, M
    [J]. INTERMETALLICS, 2003, 11 (05) : 387 - 398
  • [9] Optimizing Thermally Grown Oxide for Thermal Barrier Coatings on TiAl Components via Fluorine Treatment
    Donchev, A.
    Braun, R.
    Schuetze, M.
    [J]. JOM, 2010, 62 (01) : 70 - 74
  • [10] Donchev A, 2009, MATER RES SOC SYMP P, V1128, P159
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