2022 Fiscal Year Final Research Report
Elucidating the deposition and film formation mechanism of plasma-assisted aerosol deposition (PAD) process
| 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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| Keywords | Plasma assistance AD / Single particle / Bonding mechanism / Deposition mechanism |
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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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| Free Research Field |
Material processing and microstructure control
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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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