• Journal of Inorganic Materials
  • Vol. 35, Issue 6, 669 (2020)
Xiaojuan JI1、2, Yueguang YU2、*, and Xiaoliang LU2
Author Affiliations
  • 1School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
  • 2BGRIMM Technology Group, Beijing 100160, China
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    DOI: 10.15541/jim20200078 Cite this Article
    Xiaojuan JI, Yueguang YU, Xiaoliang LU. Effects of Impurities on Properties of YSZ Thermal Barrier Coatings[J]. Journal of Inorganic Materials, 2020, 35(6): 669 Copy Citation Text show less
    Microstructure of S1 two-layer thermal barrier coaing
    1. Microstructure of S1 two-layer thermal barrier coaing
    Porosities of YSZ coatings heat-treated at 1400 ℃ for 100 h
    2. Porosities of YSZ coatings heat-treated at 1400 ℃ for 100 h
    Porosities of YSZ coatings doped with 1wt% oxides after heat treatment
    3. Porosities of YSZ coatings doped with 1wt% oxides after heat treatment
    Thermal diffusivity of YSZ coatings
    4. Thermal diffusivity of YSZ coatings
    Thermal shock lifetime of YSZ coatings
    5. Thermal shock lifetime of YSZ coatings
    TEM microstructures and diffraction spots of YSZ coatings doped with 1wt% SiO2
    6. TEM microstructures and diffraction spots of YSZ coatings doped with 1wt% SiO2
    TEM microstructure and diffraction spots of YSZ coatings doped with 1wt% Al2O3
    7. TEM microstructure and diffraction spots of YSZ coatings doped with 1wt% Al2O3
    ZrO2HfO2TiO2SiO2MgOFe2O3
    90.281.55<0.01<0.01<0.01<0.01
    Y2O3Al2O3CaONa2OK2O
    7.920.011<0.01<0.01<0.01
    Table 1. Chemical composition of YSZ raw materials (wt%)
    No.SiO2No.Al2O3No.Fe2O3
    DMDMDM
    HP<0.01<0.01<0.01<0.01<0.010.0049
    S10.020.013A10.020.014F10.020.0140
    S20.060.038A20.060.030F20.060.0390
    S30.100.064A30.100.051F30.100.0800
    S40.160.110A40.150.079F40.160.1100
    S50.200.150A50.200.120F50.200.1400
    S60.360.260A60.350.230F60.360.3000
    S70.500.320A70.500.300F70.500.3400
    S80.660.430A80.650.380F80.660.4600
    S90.800.550A90.800.450F90.800.5700
    S101.000.620A101.000.640F101.000.5900
    Table 2. Design composition (D) of YSZ powders and measured composition (M) of YSZ coatings (wt%)
    Coal oil/(L·h-1)O2/(L·min-1)Ar (Carrier gas) /(L·min-1)Powder feeding rate/(g·min-1)Distance/mm
    26900875380
    Table 3. Parameters of HVOF process
    Current/AVoltage/VPower/kWDistance/mm
    6207647100
    Ar/(L·min-1)H2/(L·min-1)Ar(Carrier gas)/ (L·min-1)Powder feeding rate/(g·min-1)
    38134.530
    Table 4. Parameters of APS process
    Xiaojuan JI, Yueguang YU, Xiaoliang LU. Effects of Impurities on Properties of YSZ Thermal Barrier Coatings[J]. Journal of Inorganic Materials, 2020, 35(6): 669
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