Microstructure influence on functional properties of HVOF deposited NiCoCrAlY bond coat - SPS YSZ topcoat systems

被引：0
|
作者：
Thoutam, Aravind Kumar [1 ]
Li, Xin-Hai [2 ]
Kjellman, Björn [3 ]
Gupta, Mohit [1 ]
Markocsan, Nicolaie [1 ]
机构：
[1] University West, Trollhättan, Sweden
[2] Siemens Energy AB, Finspång, Sweden
[3] GKN Aerospace, Trollhättan, Sweden
来源：
Surface and Coatings Technology | 2025年 / 508卷
关键词：
Fracture mechanics - HVOF thermal spraying - Plasma spraying - Shock testing - Sprayed coatings - Suspensions (components) - Thermal barrier coatings - Thermal fatigue - Thermal shock - Titanium nitride - Yttria stabilized zirconia - Yttrium alloys;
D O I：
10.1016/j.surfcoat.2025.132157
中图分类号：
学科分类号：
摘要：
Advanced thermal barrier coatings (TBCs) consisting of suspension plasma sprayed (SPS) topcoat and high-velocity oxy-fuel (HVOF) deposited bond coat were used in this study. Hastelloy-X substrates were coated with NiCoCrAlY bond coat using HVOF and yttrium stabilized zirconia (YSZ) with SPS techniques, respectively. Eight different topcoats were investigated with the standard HVOF bond coat for a lifetime and functional properties evaluation. Diverse microstructural features like interpass porosity, vertical and branching cracks in the coatings revealed a substantial influence on the lifetime and functional properties of the coatings. Thermal cyclic fatigue (TCF) and thermal shock tests were performed to evaluate the lifetime of the coatings and functional properties were assessed using laser flash analysis (LFA), air jet erosion tester, micro-indentation, etc. Specific emphasis on the sintering behavior of the microstructure and the mechanism behind the coating failure was detailed in this work. The findings demonstrate that HVOF-SPS systems offer a promising alternative to conventional coating technologies. © 2025 The Authors
引用
收藏
相关论文
共 10 条
  • [1] Effect of laser cladding layers on microstructure and mechanical properties of NiCoCrAlY bond coat
    Geng, Chuanqing
    Zhang, Zhanfei
    Xie, Huimin
    Liu, Fei
    MATERIALS TODAY COMMUNICATIONS, 2024, 41
  • [2] Characterizing the microstructure and mechanical behavior of a two-phase NiCoCrAlY bond coat for thermal barrier systems
    Hemker, K. J.
    Mendis, B. G.
    Eberl, C.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 483-84 (1-2 C): : 727 - 730
  • [3] Influence of Bond Coats on the Microstructure and Mechanical Behaviors of HVOF-Deposited TiAlNb Coatings
    Zeng, H. J.
    Zhang, L. Q.
    Lin, J. P.
    He, X. Y.
    Zhang, Y. C.
    Jia, P.
    JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2012, 21 (06) : 1245 - 1256
  • [4] Influence of Bond Coats on the Microstructure and Mechanical Behaviors of HVOF-Deposited TiAlNb Coatings
    H. J. Zeng
    L. Q. Zhang
    J. P. Lin
    X. Y. He
    Y. C. Zhang
    P. Jia
    Journal of Thermal Spray Technology, 2012, 21 : 1245 - 1256
  • [5] Effect of Suspension Plasma-Sprayed YSZ Columnar Microstructure and Bond Coat Surface Preparation on Thermal Barrier Coating Properties
    Bernard, Benjamin
    Quet, Aurelie
    Bianchi, Luc
    Schick, Vincent
    Joulia, Aurelien
    Malie, Andre
    Remy, Benjamin
    JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2017, 26 (06) : 1025 - 1037
  • [6] Effect of Suspension Plasma-Sprayed YSZ Columnar Microstructure and Bond Coat Surface Preparation on Thermal Barrier Coating Properties
    Benjamin Bernard
    Aurélie Quet
    Luc Bianchi
    Vincent Schick
    Aurélien Joulia
    André Malié
    Benjamin Rémy
    Journal of Thermal Spray Technology, 2017, 26 : 1025 - 1037
  • [7] Microstructure and lifetime of Hf or Zr doped sputtered NiAlCr bond coat/7YSZ EB-PVD TBC systems
    Munoz Saldana, J.
    Schulz, U.
    Mondragon Rodriguez, G. C.
    Caceres-Diaz, L. A.
    Lau, H.
    SURFACE & COATINGS TECHNOLOGY, 2018, 335 : 41 - 51
  • [8] Microstructural and mechanical properties changes of a NiCoCrAlY bond coat with heat exposure time in air plasma-sprayed Y2O3-ZrO2 TBC systems
    Hasegawa, Makoto
    Kagawa, Yutaka
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2006, 3 (04) : 293 - 301
  • [9] AN ALTERNATIVE NONLOCAL EXCHANGE FUNCTIONAL AND ITS INFLUENCE ON CALCULATED BOND-ENERGIES, BOND DISTANCES AND SPECTROSCOPIC PROPERTIES OF MOLECULAR-SYSTEMS
    TSCHINKE, V
    ZIEGLER, T
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1988, 195 : 236 - PHYS
  • [10] Influence of inhomogeneous doping on chemical bond properties, microstructure, and terahertz dielectric performances of LTCC-capable ZnNb2O6 systems
    Huang, Zipeng
    Qiao, Jianli
    Jia, Wenxiao
    Li, Lingxia
    CERAMICS INTERNATIONAL, 2024, 50 (09) : 15732 - 15739
1