Ni-Cu-Al合金粉のドクターブレード成形および多孔質体の焼成(第一報) : プロセスの検討

概要

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Al oxide dispersed Ni-Cu porous sintered alloy was fabricated by a tape casting process followed by a sintering process consisting of oxidation and reduction from Ni-45%Cu-5%Al atmized alloy powder. Conditions of the tape casting process and the relationship between sintering temperature and porosity of the sintered alloys were investigated.<BR>Metal powder could be tape-casted in the viscosity range of the slurry during 10, 000-20, 000 cps. Thickness of the green compacts was proportional to blade height. Densities of the green compacts were similar to the tap densities of raw powders. After sintering, porosity of the sintered alloy changed little from the green compacts. These results indicated that the porosity (or density) of the sintered alloy made by this fabrication process could be predicted from the tap density data of raw powder materials.