| Project/Area Number |
14350398
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
FUJISAWA Toshiharu Nagoya University, Research Center for Advanced Waste and Emission Management, Professor, 難処理人工物研究センター, 教授 (20115629)
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| Co-Investigator(Kenkyū-buntansha) |
SANO Hiroyuki Nagoya University, Research Center for Advanced Waste and Emission Management, Research Associate, 難処理人工物研究センター, 助手 (50314050)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2003: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2002: ¥10,400,000 (Direct Cost: ¥10,400,000)
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| Keywords | Composite Materials / Recycling / Flux / Aluminum / Reinforcement / NaCl-KCl / KF / Closed / SiC / Al_2O_3 / KF / 粒子強化 |
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| Research Abstract |
Closed recycling process for low-grade scrap of Al-based composite materials was developed. Flux treatment with water-soluble halide is a key technique in this process. In the present work, flux treatment conditions were discussed from the viewpoints of separation and recovery of base material, reinforcement and flux.
The aluminum alloy and the SiC particulate can be recovered separately from the scraping waste of the Al-SiC composite material by using the flux of the NaCl-KCl-KF system. Only small amount of KF is enough to achieve a good result (KF < 1 mass%).
The recovered aluminum alloy can be recycled for various usages. Because of the coexistence of Al_2O_3 and K_2NaAlF_6, the recovered SiC particles cannot be reused as reinforcement. It is necessary to eliminate the contamination or to find the other uses. The recovered flux is reusable with supplemental addition of fluoride.
Recycling process flow was proposed based on the present result.
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