Microstructure characteristics of EB-PVD YSZ thermal barrier coatings corroded by molten volcanic ash

被引：38
作者：
Cai, Canying [1 ,2 ]
Chang, Sheng [1 ,2 ]
Zhou, Yichun [1 ,2 ]
Yang, Li [1 ,2 ]
Zhou, Guangwen [3 ,4 ]
Wang, Yanguo [1 ,2 ]
机构：
[1] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China
[2] Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China
[3] SUNY Binghamton, Dept Mech Engn, Binghamton, NY 13902 USA
[4] SUNY Binghamton, Mat Sci & Engn Program, Binghamton, NY 13902 USA
来源：
SURFACE & COATINGS TECHNOLOGY | 2016年 / 286卷
关键词：
Corrosion; Microstructure; Thermal barrier coatings; Yttria-stabilized zirconia; CMAS DEGRADATION; GLASSY DEPOSITS; MECHANISMS; DELAMINATION; TEMPERATURE; DAMAGE; INFILTRATION; CORROSION; SUBJECT; ENGINES;
D O I：
10.1016/j.surfcoat.2015.12.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Y2O3-stabilized ZrO2 (YSZ) thermal barrier coatings (TBCs) grown on a polycrystalline alumina (Al2O3) substrate are corroded by a natural volcanic ash (VA) at 1150 degrees C. The VA corrosion-induced microstructure development and composition evolution across the YSZ coating layer and at the VA/YSZ and YSZ/Al2O3 interfaces are investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, energy-dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM). It is found that the VA-corroded YSZ coating undergoes grain growth and becomes well-connected along the deposition direction. It is shown that VA-molten depositions penetrate through the entire YSZ layer and fully fill the intercolumnar gaps in the YSZ layer, which results in crystalline ZrSiO4 precipitates between the intercolumnar gaps near the VA/YSZ interface and anorthite (CaAl2Si2O8) precipitates at the YSZ/Al2O3 interface with the micro-crack formation. The growth stresses associated with the anorthite precipitation is suggested as the driving force to initiate the degradation of TBCs at the YSZ/Al2O3 interface region. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：49 / 56
页数：8
相关论文
共 38 条
  • [1] Properties of CMAS glass from desert sand
    Bansal, Narottam P.
    Choi, Sung R.
    [J]. CERAMICS INTERNATIONAL, 2015, 41 (03) : 3901 - 3909
  • [2] Role of environmental deposits and operating surface temperature in spallation of air plasma sprayed thermal barrier coatings
    Borom, MP
    Johnson, CA
    Peluso, LA
    [J]. SURFACE & COATINGS TECHNOLOGY, 1996, 86 (1-3) : 116 - 126
  • [3] Calcium-magnesium-alumina-silicate (CMAS) delamination mechanisms in EB-PVD thermal barrier coatings
    Chen, X
    [J]. SURFACE & COATINGS TECHNOLOGY, 2006, 200 (11) : 3418 - 3427
  • [4] CORROSION MECHANISMS OF ZRO2-Y2O3 THERMAL BARRIER COATINGS IN THE PRESENCE OF MOLTEN MIDDLE-EAST SAND
    DEWET, DJ
    TAYLOR, R
    STOTT, FH
    [J]. JOURNAL DE PHYSIQUE IV, 1993, 3 (C9): : 655 - 663
  • [5] Jet Engine Coatings for Resisting Volcanic Ash Damage
    Drexler, Julie M.
    Gledhill, Andrew D.
    Shinoda, Kentaro
    Vasiliev, Alexander L.
    Reddy, Kongara M.
    Sampath, Sanjay
    Padture, Nitin P.
    [J]. ADVANCED MATERIALS, 2011, 23 (21) : 2419 - +
  • [6] Air-plasma-sprayed thermal barrier coatings that are resistant to high-temperature attack by glassy deposits
    Drexler, Julie M.
    Shinoda, Kentaro
    Ortiz, Angel L.
    Li, Dongsheng
    Vasiliev, Alexander L.
    Gledhill, Andrew D.
    Sampath, Sanjay
    Padture, Nitin P.
    [J]. ACTA MATERIALIA, 2010, 58 (20) : 6835 - 6844
  • [7] Thermal-gradient testing of thermal barrier coatings under simultaneous attack by molten glassy deposits and its mitigation
    Drexler, Julie M.
    Aygun, Aysegul
    Li, Dongsheng
    Vassen, Robert
    Steinke, Tanja
    Padture, Nitin P.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2010, 204 (16-17) : 2683 - 2688
  • [8] Evans AG, 2007, SURF COAT TECH, V201, P7905, DOI 10.1016/j.surfcoat.2007.03.029
  • [9] Mechanisms controlling the durability of thermal barrier coatings
    Evans, AG
    Mumm, DR
    Hutchinson, JW
    Meier, GH
    Pettit, FS
    [J]. PROGRESS IN MATERIALS SCIENCE, 2001, 46 (05) : 505 - 553
  • [10] CMAS degradation of environmental barrier coatings
    Grant, Kendra M.
    Kramer, Stephan
    Lofvander, Jan P. A.
    Levi, Carlos G.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2007, 202 (4-7) : 653 - 657
1234