| Project/Area Number |
20K05161
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 26050:Material processing and microstructure control-related
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Yamada Mohammed Shahien 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究員 (90868746)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Plasma assistance AD / Single particle / Bonding mechanism / Deposition mechanism / Single particle impact |
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| Outline of Research at the Start |
Utilization of plasma assistance to aerosol deposition (PAD) significantly improved the deposition rate and enabled the 3D coverage. However, it is difficult to clarify the complete PAD mechanism during the coating formation, where huge number of particles are deposited on substrate. This study proposes a new concept to clarify the PAD mechanism via elucidating:
① Plasma-assistance mechanism of the single particle kinetics and characteristics in the plasma.
② Adhesion phenomenon and bonding mechanism of single particle.
③ Adhesion phenomenon and bonding mechanism in the coating layer.
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| Outline of Final Research Achievements |
Plasma assistance aerosol deposition (PAD) is a coating technology the process is based on the utilization of plasma assistance for the fine particles at very high speed. However, it is difficult to understand the PAD bonding mechanism during coating formation due to the deposition of a huge number of particles at the same time. In this project, I developed the single particle (coating built-up unit) concept to investigate the PAD mechanism. The behavior of the single particle deposition was investigated by using a multi-layer high-speed shutter. The PAD spray mechanism goes through the plasma surface activation of the particle without melting. Then the activated fine particles are accelerated by high-velocity gas flow to impact and stuck on the substrate via room temperature impact consolidation mechanism. During the deposition, the activated surface layers acted as a glue and increased the binding between the deposited particles, thereby improving the deposition efficiency.
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| Academic Significance and Societal Importance of the Research Achievements |
The single particle concept was promising to clarify the coating formation and bonding mechanisms of the new coating region of PAD. It was helpful to promote technology development and enable the formation of thick and dense coatings on different shapes of objects from flat to 3D.
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