Nanomechanical characterization of nanostructured Lu2SiO5 environmental barrier coatings by nano-indentation

Donghui Guo; Baosheng Xu; Jinzhuo Shi; Baolu Shi; Xinlei Jia; Runze Jin; Yanwei Wang; Yiguang Wang

doi:10.1016/j.surfcoat.2023.130317

Nanomechanical characterization of nanostructured Lu₂SiO₅ environmental barrier coatings by nano-indentation

Donghui Guo, Baosheng Xu^*, Jinzhuo Shi, Baolu Shi, Xinlei Jia, Runze Jin, Yanwei Wang, Yiguang Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Nanostructured rare-earth silicates are widely considered as environmental barrier coatings for the new generation of silicon-based composites. In current work, the nanostructured Lu₂SiO₅ coatings were deposited successfully using nanostructured Lu₂SiO₅ feedstocks by atmospheric plasma spraying (APS). Moreover, the nanomechanical properties of Lu₂SiO₅ coatings were characterized systematically by nano-indentation. Results indicate that the grain growth of Lu₂SiO₅ coatings is not obvious compared to Lu₂SiO₅ feedstocks. The nanostructured Lu₂SiO₅ coatings exhibit bi-modal nanomechanical properties. The elastic modulus and nanohardness of Lu₂SiO₅ coatings are 148.84 ± 28.00 GPa and 8.51 ± 4.12 GPa, respectively. In addition, the elastic work and plastic work of Lu₂SiO₅ coatings are 10.387 ± 1.283 nJ and 18.437 ± 6.823 nJ, respectively. The proportion of consumption of energy of Lu₂SiO₅ coatings is 0.636 ± 0.099 during indentation, which means that nanostructured Lu₂SiO₅ coatings process an excellent wear resistance.

Original language	English
Article number	130317
Journal	Surface and Coatings Technology
Volume	477
DOIs	https://doi.org/10.1016/j.surfcoat.2023.130317
Publication status	Published - 15 Feb 2024

Keywords

Elastic modulus
Environmental barrier coatings
Indentation work
Nanohardness
Nanostructured LuSiO coatings

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10.1016/j.surfcoat.2023.130317

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@article{3865dd702f3b42d6b9fd4093cd864803,

title = "Nanomechanical characterization of nanostructured Lu2SiO5 environmental barrier coatings by nano-indentation",

abstract = "Nanostructured rare-earth silicates are widely considered as environmental barrier coatings for the new generation of silicon-based composites. In current work, the nanostructured Lu2SiO5 coatings were deposited successfully using nanostructured Lu2SiO5 feedstocks by atmospheric plasma spraying (APS). Moreover, the nanomechanical properties of Lu2SiO5 coatings were characterized systematically by nano-indentation. Results indicate that the grain growth of Lu2SiO5 coatings is not obvious compared to Lu2SiO5 feedstocks. The nanostructured Lu2SiO5 coatings exhibit bi-modal nanomechanical properties. The elastic modulus and nanohardness of Lu2SiO5 coatings are 148.84 ± 28.00 GPa and 8.51 ± 4.12 GPa, respectively. In addition, the elastic work and plastic work of Lu2SiO5 coatings are 10.387 ± 1.283 nJ and 18.437 ± 6.823 nJ, respectively. The proportion of consumption of energy of Lu2SiO5 coatings is 0.636 ± 0.099 during indentation, which means that nanostructured Lu2SiO5 coatings process an excellent wear resistance.",

keywords = "Elastic modulus, Environmental barrier coatings, Indentation work, Nanohardness, Nanostructured LuSiO coatings",

author = "Donghui Guo and Baosheng Xu and Jinzhuo Shi and Baolu Shi and Xinlei Jia and Runze Jin and Yanwei Wang and Yiguang Wang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

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day = "15",

doi = "10.1016/j.surfcoat.2023.130317",

language = "English",

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journal = "Surface and Coatings Technology",

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T1 - Nanomechanical characterization of nanostructured Lu2SiO5 environmental barrier coatings by nano-indentation

AU - Guo, Donghui

AU - Xu, Baosheng

AU - Shi, Jinzhuo

AU - Shi, Baolu

AU - Jia, Xinlei

AU - Jin, Runze

AU - Wang, Yanwei

AU - Wang, Yiguang

PY - 2024/2/15

Y1 - 2024/2/15

N2 - Nanostructured rare-earth silicates are widely considered as environmental barrier coatings for the new generation of silicon-based composites. In current work, the nanostructured Lu2SiO5 coatings were deposited successfully using nanostructured Lu2SiO5 feedstocks by atmospheric plasma spraying (APS). Moreover, the nanomechanical properties of Lu2SiO5 coatings were characterized systematically by nano-indentation. Results indicate that the grain growth of Lu2SiO5 coatings is not obvious compared to Lu2SiO5 feedstocks. The nanostructured Lu2SiO5 coatings exhibit bi-modal nanomechanical properties. The elastic modulus and nanohardness of Lu2SiO5 coatings are 148.84 ± 28.00 GPa and 8.51 ± 4.12 GPa, respectively. In addition, the elastic work and plastic work of Lu2SiO5 coatings are 10.387 ± 1.283 nJ and 18.437 ± 6.823 nJ, respectively. The proportion of consumption of energy of Lu2SiO5 coatings is 0.636 ± 0.099 during indentation, which means that nanostructured Lu2SiO5 coatings process an excellent wear resistance.

AB - Nanostructured rare-earth silicates are widely considered as environmental barrier coatings for the new generation of silicon-based composites. In current work, the nanostructured Lu2SiO5 coatings were deposited successfully using nanostructured Lu2SiO5 feedstocks by atmospheric plasma spraying (APS). Moreover, the nanomechanical properties of Lu2SiO5 coatings were characterized systematically by nano-indentation. Results indicate that the grain growth of Lu2SiO5 coatings is not obvious compared to Lu2SiO5 feedstocks. The nanostructured Lu2SiO5 coatings exhibit bi-modal nanomechanical properties. The elastic modulus and nanohardness of Lu2SiO5 coatings are 148.84 ± 28.00 GPa and 8.51 ± 4.12 GPa, respectively. In addition, the elastic work and plastic work of Lu2SiO5 coatings are 10.387 ± 1.283 nJ and 18.437 ± 6.823 nJ, respectively. The proportion of consumption of energy of Lu2SiO5 coatings is 0.636 ± 0.099 during indentation, which means that nanostructured Lu2SiO5 coatings process an excellent wear resistance.

KW - Elastic modulus

KW - Environmental barrier coatings

KW - Indentation work

KW - Nanohardness

KW - Nanostructured LuSiO coatings

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JO - Surface and Coatings Technology

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ER -

Nanomechanical characterization of nanostructured Lu₂SiO₅ environmental barrier coatings by nano-indentation

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