Separation of PRMMC into matrix alloy and reinforcements by nozzle filtering method |
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| Authors: | Masayuki Mizumoto Takeshi Ohgai Akio Kagawa |
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| Affiliation: | 1. State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;2. Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, PR China;1. Technical University of Darmstadt, Department of Materials Science, Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany;2. Nagasaki University, Faculty of Engineering, 1-14 Bunkyo-machi, 852-8521 Nagasaki, Japan;3. JSPS Postdoctoral Fellow, Kojimachi 5-3-1, Chiyoda-ku 102-0083, Tokyo, Japan;4. Kinki University, Department of Electric & Electronic Engineering, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan;1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Materials, North China Institute of Aerospace Engineering, Langfang 065000, China;1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Materials, North China Institute of Aerospace Engineering, Langfang 065000, China |
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| Abstract: | The SiCP/Al–4 mass%Cu alloy composites fabricated by a low-pressure infiltration process (LPI process) were remelted and separated by nozzle filtering method. In the separation process, the PRMMC specimen was placed in a container with a small nozzle at the bottom. The molten PRMMC was forced to flow out through the nozzle by applying a certain pressure of Ar gas. Most of the molten matrix alloy flowed out through the nozzle and the remainder in the container consisted of SiC particles and a part of the matrix alloy. The particle volume fraction of the remainder was higher than that of the original PRMMC and the remainder would work as a filter to separate SiC particles from the matrix alloy melt. When nozzle tip angle was ranged from 60° to 120°, about 80% of matrix alloy in the PRMMC was separated and few SiC particles were observed in the separated matrix alloy. The surface of recovered SiC particles became slightly roughened due to the reaction with the molten matrix during the separation process. However, this is not expected to affect their reuse. |
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