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作者:

Wu, Yang (Wu, Yang.) | Hu, Xunxun (Hu, Xunxun.) | Zhang, Zhao (Zhang, Zhao.) | Zhi, Wenbo (Zhi, Wenbo.) | Jia, Qiang (Jia, Qiang.) | Zhou, Bangyang (Zhou, Bangyang.) | Shao, Wei (Shao, Wei.) | He, Dingyong (He, Dingyong.)

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EI Scopus

摘要:

Two micro-nano structural NdYbZr2O7 thermal barrier coatings (TBCs) inspired by lotus leaf were fabricated by ultrafast laser direct writing technology, which are defined as coating A and B respectively. The biomimetic coatings exhibit an outstanding volcanic ash repellence within a short-term period (1200 °C/10 min), while this performance dramatically deteriorates with time due to destruction of micro-conoids caused by the chemical reaction rather than the high-temperature sintering of nanoparticles. Additionally, this chemical reaction is responsible for the formation of dense reaction layer composed of c-ZrO2 and apatite grains in the sides of conoids, which effectively protects the underneath coating substrate from the infiltration and corrosion of molten volcanic ash. Thermal conductivity of these two laser-ablated coatings increases approximately 30 % than that of as-sprayed counterpart because of both the increase in dispersity of interface discontinuity and the decrease in coating thickness. During the wear process, the conoids are susceptible to abrupt fracture in the presence of load stress, as well as the initial deposited nanoparticles, resulting in the reduce of wear resistance against hard debris. © 2024 Elsevier Ltd and Techna Group S.r.l.

关键词:

Hydrolysis Thermal barrier coatings Neodymium alloys Sprayed coatings

作者机构:

  • [ 1 ] [Wu, Yang]College of Materials Science and Engineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing; 100124, China
  • [ 2 ] [Hu, Xunxun]Tianmushan Laboratory, Yuhang District, Hangzhou; 311115, China
  • [ 3 ] [Zhang, Zhao]School of Materials Science and Engineering, Liaocheng University, Shandong, Liaocheng; 252000, China
  • [ 4 ] [Zhi, Wenbo]College of Materials Science and Engineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing; 100124, China
  • [ 5 ] [Jia, Qiang]College of Materials Science and Engineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing; 100124, China
  • [ 6 ] [Zhou, Bangyang]Key Laboratory for Advanced Corrosion and Protection of Aviation Materials, AECC Beijing Institute of Aeronautical Materials, Beijing; 100195, China
  • [ 7 ] [Shao, Wei]College of Materials Science and Engineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing; 100124, China
  • [ 8 ] [He, Dingyong]College of Materials Science and Engineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing; 100124, China

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来源 :

Ceramics International

ISSN: 0272-8842

年份: 2024

期: 24

卷: 50

页码: 53309-53318

5 . 2 0 0

JCR@2022

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SCOPUS被引频次: 1

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