Multiscale experimental characterization of coatings on ceramics: A case study of tungsten on SiC

Huaxin Li; Takaaki Koyanagi; Xunxiang Hu; Yutai Katoh

doi:10.1016/j.surfcoat.2019.03.040

Multiscale experimental characterization of coatings on ceramics: A case study of tungsten on SiC

Huaxin Li, Takaaki Koyanagi, Xunxiang Hu, Yutai Katoh

Advanced Nuclear Materials

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

4 Scopus citations

Abstract

State-of-the-art transmission Kikuchi diffraction (TKD) and high-speed nano-indentation were combined with glow-discharge optical emission spectroscopy (GDOES), transmission electron microscopy (TEM) and micro-cantilever testing to characterize microstructures and mechanical properties of coatings on a ceramic substrate. The goal was to develop a multiscale experimental characterization method to assess the coating/substrate couple. A tungsten coated silicon carbide substrate was the system used for this development. The combination of GDOES, TEM and TKD enabled precise phase identification in the system, while TKD provided superior spatial resolution for phase identification. Micro-cantilever tests were able to measure adhesion strength, with support from high-speed nano-indentation which enabled rapid modulus and hardness determination over relatively large areas.

Original language	English
Pages (from-to)	1-10
Number of pages	10
Journal	Surface and Coatings Technology
Volume	367
DOIs	https://doi.org/10.1016/j.surfcoat.2019.03.040
State	Published - Jun 15 2019

Funding

The study was supported by the US DOE Office of Fusion Energy Sciences under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The first author was supported by the program of China Scholarship Council [grant number 201706690006 ]. Austin Schumacher and Michael Trammell at Oak Ridge National Laboratory (ORNL) contributed SPS experiments. The authors wish to thank Frederick Wiffen and Peter A. Mouche at ORNL for valuable comments on this manuscript. The study was supported by the US DOE Office of Fusion Energy Sciences under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The first author was supported by the program of China Scholarship Council [grant number 201706690006]. Austin Schumacher and Michael Trammell at Oak Ridge National Laboratory (ORNL) contributed SPS experiments. The authors wish to thank Frederick Wiffen and Peter A. Mouche at ORNL for valuable comments on this manuscript.

Funders	Funder number
US DOE Office of Fusion Energy Sciences
Fusion Energy Sciences	DE-AC05-00OR22725
China Scholarship Council	201706690006

Keywords

Coating
Micro-mechanical testing
Multiscale characterization
Transmission Kikuchi diffraction

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10.1016/j.surfcoat.2019.03.040

Cite this

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title = "Multiscale experimental characterization of coatings on ceramics: A case study of tungsten on SiC",

abstract = "State-of-the-art transmission Kikuchi diffraction (TKD) and high-speed nano-indentation were combined with glow-discharge optical emission spectroscopy (GDOES), transmission electron microscopy (TEM) and micro-cantilever testing to characterize microstructures and mechanical properties of coatings on a ceramic substrate. The goal was to develop a multiscale experimental characterization method to assess the coating/substrate couple. A tungsten coated silicon carbide substrate was the system used for this development. The combination of GDOES, TEM and TKD enabled precise phase identification in the system, while TKD provided superior spatial resolution for phase identification. Micro-cantilever tests were able to measure adhesion strength, with support from high-speed nano-indentation which enabled rapid modulus and hardness determination over relatively large areas.",

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AU - Li, Huaxin

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AU - Katoh, Yutai

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AB - State-of-the-art transmission Kikuchi diffraction (TKD) and high-speed nano-indentation were combined with glow-discharge optical emission spectroscopy (GDOES), transmission electron microscopy (TEM) and micro-cantilever testing to characterize microstructures and mechanical properties of coatings on a ceramic substrate. The goal was to develop a multiscale experimental characterization method to assess the coating/substrate couple. A tungsten coated silicon carbide substrate was the system used for this development. The combination of GDOES, TEM and TKD enabled precise phase identification in the system, while TKD provided superior spatial resolution for phase identification. Micro-cantilever tests were able to measure adhesion strength, with support from high-speed nano-indentation which enabled rapid modulus and hardness determination over relatively large areas.

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Multiscale experimental characterization of coatings on ceramics: A case study of tungsten on SiC

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