| 研究課題/領域番号 |
19K05092
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分26050:材料加工および組織制御関連
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| 研究機関 | 東北大学 |
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研究代表者 |
MARY Nicolas 東北大学, 高等研究機構等, 客員准教授 (90794397)
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| 研究分担者 |
小川 和洋 東北大学, 工学研究科, 教授 (50312616)
加藤 秀実 東北大学, 金属材料研究所, 教授 (80323096)
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| 研究期間 (年度) |
2019-04-01 – 2021-03-31
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| 研究課題ステータス |
中途終了 (2020年度)
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| 配分額 *注記 |
4,420千円 (直接経費: 3,400千円、間接経費: 1,020千円)
2021年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2020年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2019年度: 2,210千円 (直接経費: 1,700千円、間接経費: 510千円)
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| キーワード | Metallic glass / cold spray / microstructure behaviour / corrosion resistance / Spark plasma sintering |
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| 研究開始時の研究の概要 |
This research aims to understand the mechanism of adhesion of metallic particles propelled by cold spray. In order to get it, metallic glass material are used. Since metallic glass have strong mechanical and chemical resistance, corrosion tests are performed to demonstrate their efficiency.
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| 研究実績の概要 |
FY2019 was dedicated to elaborate stainless steel metal glass powders. In order to use them for Cold spray, a large quantity (at about 3 kg) was made at the lab scale. The glassy state of ores was confirmed by X-ray diffraction. Atomisation of ores was contracted out a company. Size distribution at about 20-30 micronmeter was requested and confirmed by laser scattering granulometry. X-ray diffraction patterns were recorded to check the glassy state. SEM observations shown a mix of spherical and elongated particles suitable of cold spray.
FY2020. High pressure cold spray deposition were performed. Agglomeration of particles was solved by a dispersant addition. However high deposition rate was no achieved because of maximum temperature allowed by cold spray setup.
Therefore, Metallic glass samples were produced by Spark Plasma Sintering. The results show that the heating rate has a direct effect on the crystallinity but reduces the densification. A first paper in writting deals with this point and the corrosion resistance of these materials.
Ceramic particles were also added to SPS samples. Higher density were achieved because the voids between metal glass particules was also filled by the ceramic. Wear tests were carried out and a second paper is under consideration.
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