Sm2Co17 type rare earth permanent magnet material and preparation method thereof
A rare-earth permanent magnet and heavy rare-earth technology, which is applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of long process cycle and large energy consumption, achieve high interface energy, expand the design range, and enrich The effect of the interface
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Embodiment 1
[0076] Embodiment 1: (corresponding to Comparative Example 1)
[0077] Step 1: Preparation of sintered compact of samarium-cobalt-based rare earth permanent magnet material
[0078] The process is the same as Comparative Example 1. However, after being kept at 1201°C for 2 hours, the sintered billet was obtained after being air-cooled and released from the furnace.
[0079] The second step: microwave solution treatment
[0080] Put the sintered billet and the auxiliary heating material SiC into the insulation cavity made of multi-layer alumina fiber board, place the whole in the microwave sintering furnace cavity, and pump the microwave sintering furnace cavity to a vacuum degree higher than 0.1Pa, and then pass in high-purity argon gas. The sample was heated to a solid solution temperature of 1180 °C at a rate of 25 °C / min and held for 2 hours, then the heating power of the microwave heat treatment furnace was turned off, and the temperature was rapidly cooled to a tempera...
Embodiment 2
[0085] Step 1: Preparation of sintered compact of samarium-cobalt-based rare earth permanent magnet material
[0086] The process is the same as that of Comparative Example 2, except that the sample is kept at 1215° C. for 2 hours and then air-cooled to obtain a sintered compact.
[0087] The second step: microwave solution treatment
[0088] Put the sintered billet and the auxiliary heating material SiC into the insulation cavity made of multi-layer alumina fiber board, place the whole in the microwave sintering furnace cavity, and pump the microwave sintering furnace cavity to a vacuum degree higher than 0.1Pa, and then pass in high-purity argon gas. The sample was heated at a rate of 90°C / min to a solid solution temperature of 1190°C and held for 2 hours, then the heating power of the microwave heat treatment furnace was turned off, and the sample was rapidly cooled by gas quenching until the temperature was lower than 150°C to obtain a microwave solid solution body.
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Embodiment 3
[0093] Step 1: Preparation of sintered compact of samarium-cobalt-based rare earth permanent magnet material
[0094] The process is the same as that of Comparative Example 3, except that the sample is kept at 1210° C. for 2 hours and then air-cooled to obtain a sintered billet.
[0095] The second step: microwave solution treatment
[0096] Put the sintered billet and the auxiliary heating material SiC into the insulation cavity made of multi-layer alumina fiber board, place the whole in the cavity of the microwave sintering furnace, and pump the vacuum of the cavity of the microwave sintering furnace to a degree higher than 0.1Pa, and then introduce high-purity argon gas. The sample was heated at a rate of 90°C / min to a solid solution temperature of 1180°C and held for 1 hour, then the heating power of the microwave heat treatment furnace was turned off, and the sample was rapidly cooled by gas quenching until the temperature was lower than 150°C to obtain a microwave solid...
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