Phase and structural evolution of dysprosia stabilized zirconia ceramics under CMAS corrosion environment

被引:2
作者
Cheng, Huicong [1 ]
Wang, Yalei [1 ]
Liu, Huaifei [2 ]
Xiong, Xiang [1 ]
Tan, Yulin [1 ]
机构
[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Mat Surface Interface Sci & Tec, Changsha 410004, Peoples R China
关键词
Dysprosia stabilized zirconia; CMAS corrosion; Phase and structural evolution; Corrosion mechanisms; THERMAL-BARRIER COATINGS; SILICATE CMAS; PHYSICAL-PROPERTIES; SYNTHESIS MECHANISM; TRANSFORMATION; SUBJECT; MICROSTRUCTURE; CONDUCTIVITY; DELAMINATION; TEMPERATURE;
D O I
10.1016/j.ceramint.2023.09.155
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, 10 wt % dysprosia stabilized zirconia (10DySZ) ceramics were prepared by pressureless sintering method. The CMAS corrosion behaviors of DySZ ceramics were investigated and the corrosion mechanism was also discussed in detail. Results show that the CMAS corrosive agent can induce phase transformation of DySZ ceramic due to the stronger ability to capture Dy stabilizers than Zr ions. During the corrosion process, molten CMAS would preferentially corrode the grain boundaries and then infiltrated into the interior of DySZ ceramic, resulting in the formation of loose structure on the ceramic surface. Sandy-shaped DySZ particles were also formed in the residual CMAS layers based on dissolution and precipitation mechanism. The corrosion temperature plays a crucial role in accelerating the phase transformation and thermal-mechanical damage of DySZ ceramic. Mismatch of thermal expansion coefficient between CMAS and DySZ ceramics as well as composition and structural difference between dense layer and porous layer are all responsible to the formation of destructive cracks.
引用
收藏
页码:38237 / 38246
页数:10
相关论文
共 43 条
  • [11] Synthesis of Dy2O3-ZrO2 nano powders by cocurrent coprecipitation
    Huicong, Cheng
    Yalei, Wang
    Axin, Li
    Huaifei, Liu
    Nannan, Wu
    Rong, Liu
    [J]. CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING, 2022, 50 (06): : 97 - 106
  • [12] Preparation and conductivity of Yb2O3-Y2O3 and Gd2O3-Y2O3 co-doped zirconia ceramics
    Kan, Yanmei
    Li, Songli
    Wang, Peiling
    Zhang, Guo-Jun
    Van der Biest, Omer
    Vleugels, Jef
    [J]. SOLID STATE IONICS, 2008, 179 (27-32) : 1531 - 1534
  • [13] Failure mechanisms of coin-type plasma-sprayed thermal barrier coatings with thermal fatigue
    Kim, Dae-Jin
    Shin, In-Hwan
    Koo, Jae-Mean
    Seok, Chang-Sung
    Lee, Tack-Woon
    [J]. SURFACE & COATINGS TECHNOLOGY, 2010, 205 : S451 - S458
  • [14] DEPOSITION OF VOLCANIC MATERIALS IN THE HOT SECTIONS OF 2 GAS-TURBINE ENGINES
    KIM, J
    DUNN, MG
    BARAN, AJ
    WADE, DP
    TREMBA, EL
    [J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 1993, 115 (03): : 641 - 651
  • [15] Mechanisms of cracking and delamination within thick thermal barrier systems in aero-engines subject to calcium-magnesium-alumino-silicate (CMAS) penetration
    Kraemer, S.
    Faulhaber, S.
    Chambers, M.
    Clarke, D. R.
    Levi, C. G.
    Hutchinson, J. W.
    Evans, A. G.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 490 (1-2): : 26 - 35
  • [16] Thermochemical interaction of thermal barrier coatings with molten CaO-MgO-Al2O3-SiO2 (CMAS) deposits
    Kramer, Stephan
    Yang, James
    Levi, Carlos G.
    Johnson, Curtis A.
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (10) : 3167 - 3175
  • [17] Environmental degradation of thermal-barrier coatings by molten deposits
    Levi, Carlos G.
    Hutchinson, John W.
    Vidal-Setif, Marie-Helene
    Johnson, Curtis A.
    [J]. MRS BULLETIN, 2012, 37 (10) : 932 - 941
  • [18] Microstructure and synthesis mechanism of dysprosia-stabilized zirconia nanocrystals via chemical coprecipitation
    Li, A-xin
    Wang, Ya-lei
    Xiong, Xiang
    Liu, Huai-fei
    Wu, Nan-nan
    Liu, Rong
    [J]. CERAMICS INTERNATIONAL, 2020, 46 (09) : 13331 - 13341
  • [19] Li Y., 2021, Preparation and High Temperature CMAS Molten Salt and Water Vapor/ oxygen Corrosion Behavior of Yb2Si2O7 Ceramics
  • [20] Preparation and Phase Stability of La2O3, Y2O3 Co-doped ZrO2 Ceramic Powder Application for Thermal Barrier Coating
    Liu Huai-Fei
    Li Song-Lin
    Li Qi-Lian
    Li Yong-Ming
    Zhou Wu-Xi
    [J]. JOURNAL OF INORGANIC MATERIALS, 2009, 24 (06) : 1226 - 1230