Journal of Inorganic Materials, Volume. 37, Issue 12, 1267(2022)

Molten Salt Corrosion Behaviors and Mechanisms of Ytterbium Silicate Environmental Barrier Coating

Pingping LIU*... Xin ZHONG, Le ZHANG, Hong LI, Yaran NIU, Xiangyu ZHANG, Qilian LI and Xuebin ZHENG |Show fewer author(s)
Figures & Tables(11)
XRD patterns and SEM morphologies of as-sprayed Yb2SiO5/Yb2Si2O7/Si coating
Macro-photographs of Yb2SiO5/Yb2Si2O7/Si coating after molten salt corrosion for different time
XRD patterns of Yb2SiO5/Yb2Si2O7/Si coating after molten salt corrosion for different time
Surface morphologies of Yb2SiO5/Yb2Si2O7/Si coating after molten salt corrosion for different time and correponding EDS analyses of different areas
Cross-sectional morphologies and corresponding element analyses of Yb2SiO5 top layer after molten salt corrosion for different time
Cross-sectional morphologies and corresponding EDS element mappings of Yb2SiO5/Yb2Si2O7/Si EBCs after molten salt corrosion for different time
High-magnification cross-sectional morphologies and corresponding EDS mappings of infiltration zone in Yb2Si2O7 interlayer after molten salt corrosion for different time
Schematic diagrams of Yb2SiO5/Yb2Si2O7/Si coating under Na2SO4+25% NaCl molten salt corrosion at 900 ℃
EPR spectra of Yb2SiO5 and Yb2Si2O7 coating
  • Table 1. Operating parameters used for vacuum plasma spraying

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    Table 1. Operating parameters used for vacuum plasma spraying

    Yb2SiO5Yb2Si2O7Si
    Primary Ar/(L·min-1)465352
    Secondary H2/(L·min-1)141013
    Carrier Ar/(L·min-1)2.32.32.0
    Spray distance/mm220220290
  • Table 2. EDS elemental compositions of the marked regions in Fig. 7/%(in atom)

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    Table 2. EDS elemental compositions of the marked regions in Fig. 7/%(in atom)

    PositionYbSiNaO
    121.6914.271.9862.06
    224.9112.57-62.52
    318.2918.09-63.62
    410.1518.672.4158.77
    522.5013.751.6762.08
    624.9212.57-62.51
    718.0318.31-63.66
    88.9519.2513.2558.55
    922.9313.202.0461.82
    1024.4512.96-62.59
    1117.8218.04-63.25
    128.9119.2113.3958.49
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Pingping LIU, Xin ZHONG, Le ZHANG, Hong LI, Yaran NIU, Xiangyu ZHANG, Qilian LI, Xuebin ZHENG. Molten Salt Corrosion Behaviors and Mechanisms of Ytterbium Silicate Environmental Barrier Coating[J]. Journal of Inorganic Materials, 2022, 37(12): 1267

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Paper Information

Category: EDITORIAL

Received: May. 6, 2022

Accepted: --

Published Online: Jan. 12, 2023

The Author Email: LIU Pingping (ppliu1234@163.com)

DOI:10.15541/jim20220265

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