Laser & Optoelectronics Progress, Volume. 55, Issue 2, 021412(2018)

Thermal Shock Resistance and Laser Rapid Prototyping of Thermal Barrier Coatings with Network Structures

Yibo Zhou, Yuan Qin*, and Sen Yang
Author Affiliations
  • School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China
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    Figures & Tables(12)
    (a) Cross-section of TBC with traditional two-layer structure; (b) cross section (left) and planar structure (right) of TBC with network structure
    Bond coating layer fabricated by laser rapid prototyping. (a) Superficial photo; (b) cross sectional structure
    Network structure fabricated by laser rapid prototyping. (a) Superficial photo; (b) cross sectional structure of single edge
    TBCs with traditional structure (left) and network structure (right). (a)(b) Superficial photo; (c)(d) cross sectional structure
    (a)(b)(c) TBCs with traditional two-layer-structure and (d)(e)(f) TBCs with network structure after thermal shocks
    Side views of TBCs after failure in thermal shock test. (a) Traditional two-layer structure; (b) network structure
    Sketch of temperature loading
    Distributions of stress along X direction in TBCs with traditional structure during (a) temperature holding and (b) cooling stages of the fourth thermal shock test
    Distributions of stress along Y direction in TBCs with traditional structure during (a) temperature holding and (b) cooling stages of the fourth thermal shock test
    Distributions of stress along X direction in TBCs with network structure during (a) temperature holding and (b) cooling stages of the fourth thermal shock test
    Distributions of stress along Y direction in TBCs with network structure during (a) temperature holding and (b) cooling stages of the fourth thermal shock test
    • Table 1. Thermal physical parameters of materials[19]

      View table

      Table 1. Thermal physical parameters of materials[19]

      MaterialT /E /GPaνk /(W·m-1·℃-1)C /(J·kg-1·℃-1)ρ /(kg·m-3)α×10-6 /-1σs/MPaH /GPa
      Ceramiccoating25400.21.5348356509.68--
      800-----9.88--
      100020----10.34--
      Bondingcoating251830.34.35017320-2705
      400152-6.4592-12.5--
      800109-10.2781-14.3--
      1000--16.1764-16--
      Substrate252110.311.5431822012.635520.6
      400188-17.3524-14--
      800157-23.8627-15.4--
      1000139----16.3--
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    Yibo Zhou, Yuan Qin, Sen Yang. Thermal Shock Resistance and Laser Rapid Prototyping of Thermal Barrier Coatings with Network Structures[J]. Laser & Optoelectronics Progress, 2018, 55(2): 021412

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Aug. 16, 2017

    Accepted: --

    Published Online: Sep. 10, 2018

    The Author Email: Yuan Qin (qinyuan@njust.edu.cn)

    DOI:10.3788/LOP55.021412

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