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Durable Columnar Structure Design for Thermal Barrier Coatings
Author:
Affiliation:

1.State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China;2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

Clc Number:

TG174.442

Fund Project:

Sponsored by State Key Laboratory for Mechanical Behavior of Materials; National Natural Science Foundation of China (51901093, 51674130); Hongliu Distinguished Young Talent Support Program Project of Lanzhou University of Technology; National High-End Foreign Experts Program of China (GDT20186200331); International Science and Technology Correspondent Program of Gansu Province (17JR7WA017); Sponsored by Science and Technology International Cooperation Demonstrative Base of Metal Surface Engineering Along the Silk Road

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    Abstract:

    The thermal barrier coatings (TBCs) are employed to protect metallic components from high temperature gas, and their microstructure and service performance are closely related to and have the mutual effect with the preparation process and service condition. This research reviews TBCs failure mechanisms caused by different stress inducements from the perspective of thermally grown oxide (TGO) thickening, phase transformations, and sintering. Subsequently, the preparation methods of TBCs with columnar structure are summarized, as well as their functions of releasing stress during TBC service. Although the preparation process and service conditions are different, the lifetimes of TBCs prepared by different methods are evaluated by comparing with that of the standard TBCs. The long lifetime service mechanism of TBCs with column structure is summarized. This research reviews the interaction effects among the stress source, microstructure, preparation process, and service performance of TBCs, providing guidance for the advanced and durable TBCs design.

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[Bo Cheng, Jianjun Li, Guosheng An, Wensheng Li, Xinjian Zhang. Durable Columnar Structure Design for Thermal Barrier Coatings[J]. Rare Metal Materials and Engineering,2022,51(5):1660~1666.]
DOI:10.12442/j. issn.1002-185X.20210226

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History
  • Received:March 17,2021
  • Revised:May 09,2021
  • Adopted:June 21,2021
  • Online: May 31,2022
  • Published: May 30,2022