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Fe-Co base bulk amorphous alloy and preparation method thereof

An amorphous alloy and bulk technology, which is applied in the field of Fe-Co-based bulk amorphous alloy and its preparation, and achieves the effects of overcoming complicated processing technology, good amorphous forming ability and simple process.

Inactive Publication Date: 2009-05-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although the Co-based bulk amorphous has some development, but in today's cobalt-based soft magnetic bulk amorphous, as the main performance of the alloy, the saturation magnetization is not as good as the general iron-based bulk amorphous

Method used

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  • Fe-Co base bulk amorphous alloy and preparation method thereof
  • Fe-Co base bulk amorphous alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The composition (atomic percentage) of the iron-cobalt-based bulk amorphous alloy with soft magnetic properties in this embodiment is: 33% Fe, 33% Co, 3% Zr, 4% Nd, 5% Nb, and 22% B. The preparation process and steps are as follows: prepare 10 grams of Fe, Co, Zr, Nd, Nb and FeB alloys of industrially pure metals according to the composition of the Fe-Co-based bulk amorphous alloy of this embodiment, and then use vacuum non-consumable arc The furnace is smelted under the protection of argon, and the smelting current density is 150A / cm 2 , the smelted alloy was turned over and smelted 4 times to obtain the master alloy; after remelting the master alloy, it was poured by copper mold negative pressure suction casting method to obtain a bulk amorphous alloy with a size of 0.8mm×10mm×80mm.

[0027] The iron-cobalt-based bulk amorphous alloy obtained in this example has better amorphous formation ability, with figure 1 , It can be seen from the figure that the alloy has a la...

Embodiment 2

[0029] The composition (atomic percentage) of the iron-based bulk amorphous alloy with hard magnetism in this embodiment is: Fe 32%, Co 32%, Zr 3%, Nd 4%, Nb 7%, B 22%. The preparation process and steps are as follows: prepare 10 grams of Fe, Co, Zr, Nd, Nb and FeB alloys of industrially pure metals according to the composition of the Fe-Co-based bulk amorphous alloy of this embodiment, and then use vacuum non-consumable arc The furnace is smelted under the protection of argon, and the smelting current density is 200A / cm 2 , the smelted alloy was turned over and smelted 4 times to obtain the master alloy; after remelting the master alloy, it was poured by copper mold negative pressure suction casting method to obtain a bulk amorphous alloy with a size of 0.8mm×10mm×80mm.

[0030] The saturation magnetization Ms≈77Am of the iron-based bulk amorphous alloy prepared in this example 2 / Kg.

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Abstract

The invention relates to an iron-cobalt based bulk non-crystal alloy and a method for preparing the same. The iron-cobalt based bulk non-crystal alloy comprises the following components in atom content percentage: 28 to 40 percent of Fe, 28 to 40 percent of Co, 1 to 6 percent of Zr, 2 to 8 percent of Nd, 2 to 10 percent of Nb and 15 to 25 percent of B. The preparation method comprises the following steps: (1) the raw materials are prepared according to the ratio and smelted in a vacuum non-consumable arc-melting furnace under the protection of argon, the smelting current density is between 100 and 220A / cm<2>, and the mother alloy is turned over for smelting multiple times; and (2) the mother alloy after re-smelting is cast by a copper die negative pressure suction casting method to obtain the iron-cobalt based bulk non-crystal alloy. The magnetic alloy has good soft magnetization, and the maximum saturation magnetization reaches 79Am<2> / Kg.

Description

technical field [0001] The invention relates to a Fe-Co-based bulk amorphous alloy and a preparation method thereof, belonging to the technical field of magnetic alloy materials and processing techniques. Background technique [0002] Since Professor Dewes of Caltech first prepared amorphous Au-Si alloy in 1960, research on amorphous alloys has made great progress. Due to the excellent mechanical properties, corrosion resistance and magnetic properties of amorphous alloys, amorphous alloys of certain alloy systems have good application prospects. Among them, magnetic bulk amorphous is the most widely used. [0003] Since 1967, ferromagnetic amorphous Fe-P-C was prepared for the first time. It was found that some Fe-based and Co-based amorphous alloys have good soft magnetic properties, but the glass-forming ability of Fe-based and Co-based amorphous alloys has been limited. These alloys are only available in the form of thin ribbons, wires or powders. In order to overcome...

Claims

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Application Information

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IPC IPC(8): C22C45/00C22C1/02
Inventor 吴胜军徐晖蔡平平白琴谭晓华满华徐兴国唐永军
Owner SHANGHAI UNIV
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