2012 Fiscal Year Final Research Report
Fabrication of carbon nanofiber reinforced aluminum matrix composites by infiltration method
| Project/Area Number |
22560685
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 金属基複合材料 / カーボンナノファイバー(CNF) / 金属被覆 / アルミ合金 / 浸透法 |
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| Research Abstract |
In order to fabricate the CNF reinforced Al matrix composites, the surface of CNF was examined to coat the several metal, and wettability was evaluated using the coated CNF preforms. Moreover, the infiltration was performed using the preform including the coating CNF. After CNF, metal powder and catalyst were mixed and heated at several temperature in vacuum, the Al , Cu, Mg, Ni were coated on the surface of CNF. The sessile angle was about 174°(reference data) and not succeeded for Al coated CNF preformat 950℃, while it was 145°for AlN coated preform at 900℃. Moreover, the sessile angle was about reduced to 125°for Ni coated CNF preform. Finally, the infiltration was examined for several conditions, such as preform fabrication, Mg/Al ratios, N2 gas flow. The maximum infiltration depth(more than 2/3 of preform thickness) was obtained under the maximum porous preform condition(at room temperature at 200kPa), Mg/Al=0.3, and 1000ml.min in gas flow at 800℃. The volume fraction of CNF was about 15%, which was not fabricated by powder metallurgy method. The composites was fabricated by compo-casting method using Cu coating CNF in Al alloy.
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