Samarium-cobalt (Sm-Co) rare earth magnetic nano-porous alloy and preparation method thereof
A magnetic nanometer and rare earth alloy technology, which is applied in rare earth magnetic nanoporous metal materials and its preparation, samarium cobalt rare earth magnetic nanoporous alloy and its preparation field, can solve problems such as the difficult realization of samarium cobalt rare earth magnetic nanoporous alloy preparation, and achieve cost Low cost, simple process, and the environment does not need to corrode the effect
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Embodiment 1
[0041] Embodiment 1: Alloy composition Sm(Co bal Fe 0.2 Cu 0.12 Zr 0.03 ) 7.0
[0042] Adopt Sm, Co, Fe, Cu, Zr raw material with purity greater than 99wt% according to Sm (Co bal Fe 0.2 Cu 0.12 Zr 0.03 ) 7.0 Nominal ingredients were weighed and batched with Sm in excess of 3 wt%. Put the raw materials in the water-cooled copper crucible of the non-consumable arc melting furnace and evacuate to 5×10 -3 Pa, and then passed into high-purity argon for melting and casting onto a water-cooled copper mold. In order to ensure the uniformity of the alloy composition, the alloy was remelted three times during the alloy melting process to obtain an alloy ingot with uniform composition. Coarsely crush the smelted alloy ingot, put it into a quartz tube with a small hole at the bottom, and then place the quartz tube in the center of the induction coil in the cavity of the single-roller quick quenching belt machine; vacuumize to 8×10 -3 Pa, fill with argon gas with a purity of 9...
Embodiment 2
[0044] Embodiment 2: Alloy composition Sm(Co bal Fe 0.23 Cu 0.10 Zr 0.02 ) 8.5
[0045] Adopt Sm, Co, Fe, Cu, Zr raw material with purity greater than 99wt% according to Sm (Co bal Fe 0.23 Cu 0.10 Zr 0.02 ) 8.5 Nominal ingredients were weighed and batched with Sm in excess of 10 wt%. Put the raw materials in the water-cooled copper crucible of the non-consumable arc melting furnace and evacuate to 3×10 -3 Pa, and then passed into high-purity argon for melting and casting onto a water-cooled copper mold. In order to ensure the uniformity of the alloy composition, the alloy was remelted 5 times during the alloy smelting process to obtain an alloy ingot with a uniform composition. Coarsely crush the smelted alloy ingot, put it into a quartz tube with a small hole at the bottom, and then place the quartz tube in the center of the induction coil in the cavity of the single-roller quick quenching belt machine; vacuumize to 3×10 -3 Pa, fill with argon gas with a purity of...
Embodiment 3
[0046] Nanoporous alloys prepared by XRD detection have a single Th 2 Zn 17 Type Sm 2 co 17 Rhombus phase. The morphology of the alloy is observed by SEM as a nanoporous structure with a complete structure and uniform pore size distribution, and the pore size is about 100 nm, and the porosity is 40%. The magnetic properties of the sample were measured by a vibrating sample magnetometer: the coercive force Hcj was 8kOe, the remanence Br was 7.6kGs, and the maximum magnetic energy product (BH)max was 12MGOe. Example 3: Alloy Composition SmCo 7
[0047] Using Sm with a purity greater than 99wt%, the Co raw material is SmCo 7 Nominal ingredients were weighed and batched with Sm in excess of 5 wt%. Put the raw materials in the water-cooled copper crucible of the non-consumable arc melting furnace and evacuate to 3×10 -3 Pa, and then pass through argon with a purity of 99.99% for melting and casting onto a water-cooled copper mold. In order to ensure the uniformity of the a...
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