Volume 23 Issue 2
Feb.  2008
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WEI Hong-liang, YANG Xiao-guang, QI Hong-yu, HAN Zeng-xiang. Study of failure mode and failure mechanisms on thermal fatigue of plasma sprayed thermal barrier coatings[J]. Journal of Aerospace Power, 2008, 23(2): 270-275.
Citation: WEI Hong-liang, YANG Xiao-guang, QI Hong-yu, HAN Zeng-xiang. Study of failure mode and failure mechanisms on thermal fatigue of plasma sprayed thermal barrier coatings[J]. Journal of Aerospace Power, 2008, 23(2): 270-275.
shu

Study of failure mode and failure mechanisms on thermal fatigue of plasma sprayed thermal barrier coatings

  • 1.

    School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • 2.

    Beijing Institute of Aeronautical Materials, Beijing 100095, China

  • Received Date: 2007-01-17
  • Rev Recd Date: 2007-03-21
  • Publish Date: 2008-02-28
    Abstract
  • Thermal fatigue test was conducted to study the failure process and failure mode of the plasma sprayed thermal barrier coating structures.The controlling factors for failure were also analyzed.Aviscoplastic constitutive model was introduced for the ceramic coat.Moreover,the thermal fatigue behavior of the coating layer was studied numerically.The analysis indicates that: mode Ⅰ crack is easily initiated at the peak position,and mode Ⅱ crack at above middle position of interfaces when TGO(thermaly growth oxides) thickness is 2 μm;the extension of transverse crack is dominated by normal stress when TGOthickness is 8 μm;high strain energy density is formed within TGOof different thickness.The process and mechanisms of crack coalescence within PS-TBC(plasma sprayed thermal grown oxides) were presented.

     

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    • References(12)
  • [1]
    Rabiei A,Evans A G.Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings[J].Acta Mater.,2000,48:3963-3976.
    [2]
    Busso E P,Lin J,Sakurai S.et al.A mechanistic study of oxidation-induced degradation in a plasma-sprayed thermal barrier coating system.Part Ⅱ:Life prediction model[J].Acta materialia,2001,49:1529-1536.
    [3]
    Evans A G,Mumm D R,Hutchinson J W,et al.Mechanisms controlling the durability of thermal barrier coatings[J].Progress in Materials Science,2001,46:505-553.
    [4]
    Evans A G,He M Y,Hutchinson J W.Effect of interface undulations on the thermal fatigue of thin films and scales on metal substrates[J].Acta Mater.,1997,45:3543-3554.
    [5]
    Karlsson A M,Hutchinson J W,Evans A G.A fundamental model of cyclic instabilities in thermal barrier systems[J].Journal of the Mechanics and Physics of Solids,2002,50:1565-1589.
    [6]
    Karlsson A M,Hutchinson J W,Evans A G.The displacement of the thermally grown oxide in thermal barrier systems upon temperature cycling[J].Materials Science and Engineering,2003,A351:244-257.
    [7]
    Freborg A M,Ferguson B L,Brindley W J,et al.Modeling oxidation induced stresses in thermal barrier coatings[J].Mater.Sci.Eng.A,1998,A245(3):182-1190.
    [8]
    Aktaa J,Sfar K,Munz D.Assessment of TBC systems failure mechanisms using a fracture mechanics approach[J].Acta Materialia,2005,53:4399-4413.
    [9]
    Janosik L A,Duffy S F.A viscoplastic constitutive theory for monolithic ceramics-I[J].ASME J.Eng.Gas Turbines Power,1998,120:155-161.
    [10]
    Xie Wangang,Walker K P,Jordan E H,et al.Implementation of a viscoplastic model for a plasma sprayed ceramic thermal barrier coating[J].J.Eng.Mater.Technol.,2003,125:200-207.
    [11]
    耿瑞.热障涂层强度分析及寿命预测研究[D].北京:北京航空航天大学,2001.GENG Rui.Strength analysis and life prediction study on thermal barrier coatings[D].Beijing:Beijing University of Aeronautics and Astronautics,2001.(in Chinese).
    [12]
    Berndt C C,Miller R A.Failure analysis of plasma-sprayed thermal barrier coatings[R].NASA Technical Memorandum No.83777,1984.
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