Method for preparing Fe-Ga-In-Tb alloy bar by filtering and undercooling ceramic
A fe-ga-in-tb, ceramic filtration technology, applied in the field of material processing engineering, can solve the problems of Fe-Ga alloy magnetostrictive performance is not high, directional crystallization effect is not good, etc., to achieve uniform pore size and easy control, The effect of good directional crystal growth and high degree of orientation
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Embodiment 1
[0052] 1. Preparation before melting
[0053] (1) Self-made nanoporous ceramic filter
[0054] The filter structure is designed as three layers, the uppermost filter plate has a through hole diameter of 5mm, the middle hole diameter is 3mm, and the bottom hole diameter is 2mm, and the through holes of each layer are staggered from each other;
[0055] The specific manufacturing process of preparing nanocrystalline porous ceramic filter is: chemically pure ZrO with a particle size of 0.2 μm 2 Powder, Al 2 o 3 powder and MgO powder according to ZrO 2 90%, Al 2 o 3 MgO powder accounted for 9%, MgO powder accounted for 1% mixed, and then in the high-energy ball mill, the raw material powder was ball-milled into 100 nanometer nanocrystalline particles, and then the binder PVB (polyvinyl butyral), absolute ethanol (alcohol) Modulated into ceramic particle slurry. The organic foam polyurethane sponge is used as a porous carrier, and the ceramic slurry is evenly coated on it, a...
Embodiment 2
[0072] 1. Preparation before melting
[0073] (1) Self-made nanoporous ceramic filter
[0074] The filter structure is designed as three layers, the uppermost filter plate has a through hole diameter of 4mm, the middle hole diameter is 2.5mm, and the bottom hole diameter is 1.5mm, and the through holes of each layer are staggered from each other;
[0075] The specific manufacturing process for preparing nanocrystalline porous ceramic filter is: chemically pure ZrO with a particle size of 0.15 μm 2 Powder, Al 2 o 3 powder and MgO powder according to ZrO 2 Accounted for 80%, Al 2 o 3 MgO powder accounted for 16%, MgO powder accounted for 4% mixed, then in the high-energy ball mill, the raw material powder was ball-milled into 80 nanometer nanocrystalline particles, and then the binder PVB, namely polyvinyl butyral, and absolute ethanol, namely alcohol Modulated into ceramic particle slurry. The organic foam polyurethane sponge is used as a porous carrier, and the ceramic ...
Embodiment 3
[0093] 1. Preparation before melting
[0094] (1) Self-made nanoporous ceramic filter
[0095] The filter structure is designed as three layers, and each layer of filter sheet has through holes in addition to interconnected network holes. The diameter of the through hole of the uppermost filter is 3mm, the diameter of the middle hole is 2mm, and the diameter of the bottom hole is 0.5mm, and the through holes are staggered from each other;
[0096] The specific manufacturing process for preparing nanocrystalline porous ceramic filter is: chemically pure ZrO with a particle size of 0.15 μm 2 Powder, Al 2 o 3 powder and MgO powder according to ZrO 2 70%, Al 2 o 3 MgO powder accounted for 25% and MgO powder accounted for 5%. Then the raw material powder was ball-milled into 70nm nanocrystalline particles in a high-energy ball mill. Modulated into ceramic particle slurry. The organic foam polyurethane sponge is used as a porous carrier, and the ceramic slurry is evenly coat...
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