Method for preparing cobalt-based amorphous alloy wire

An amorphous alloy and cobalt-based technology, which is applied in the field of preparation of cobalt-based amorphous alloy wire, can solve problems such as no major breakthroughs, and achieve uniform performance, smooth surface, and high roundness

Active Publication Date: 2011-01-26
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, relevant researches have also started in China, but no major breakthroughs have been made.

Method used

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  • Method for preparing cobalt-based amorphous alloy wire
  • Method for preparing cobalt-based amorphous alloy wire
  • Method for preparing cobalt-based amorphous alloy wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition molecular formula of the cobalt-based amorphous alloy wire of this example is Co 64.1 Fe 4.1 Si 5.6 B 22.4 Nb 3.8 , the preparation steps are as follows: prepare 50 grams of raw materials Co, Fe, B, Si and Nb with a purity greater than 99% according to the composition of the cobalt-based amorphous alloy wire of this embodiment, and then use a high-frequency induction melting furnace under the protection of argon to carry out For smelting, the smelting current is 6.5A, after the raw material is completely melted, it is refined for 12 minutes.

[0029] Cut the smelted alloy rod into short rods of about 10mm, put them into the crucible, and evacuate the entire cavity to reach 5×10 -3 After Pa, close the vacuum system and flush into 0.5 atmospheres of argon for protection. Then start the high-frequency induction melting device. After the master alloy is completely melted to form a steamed bun-like melt, start the copper roller and the copper roller wate...

Embodiment 2

[0031] The molecular formula of the cobalt-based amorphous alloy wire of this example is Co 64.1 Fe 4.1 Si 5.6 B 22.4 Nb 3.8 , the preparation steps are as follows: prepare 50 g of raw materials Co, Fe, B, Si and Nb with a purity greater than 99% according to the composition of the cobalt-based amorphous alloy wire of this embodiment, and then use a high-frequency induction melting furnace to melt under the protection of argon , the smelting current is 7.0A, after the raw material is completely melted, it will be refined for 15 minutes.

[0032] Cut the smelted alloy rod into short rods of about 10mm, put them into the crucible, and evacuate the entire cavity to reach 6×10 -3 After Pa, close the vacuum system and flush into 0.6 atmospheres of argon for protection. Then start the high-frequency induction melting device, and after the master alloy is completely melted to form a steamed bun-like melt, start the copper roller and the copper roller water cooling circuit, set t...

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Abstract

The invention discloses a method for preparing a cobalt-based amorphous alloy wire, which comprises the following steps of: cutting mother alloy by using a copper roller with good heat-conducting property and continuously and rapidly drawing; realizing the continuous feed of the mother alloy by the matching of copper roller rotating linear speed and mother alloy feeding speed; meanwhile, continuously cooling the high-speed rotating copper roller by using a copper roller water-cooling technology; and maintaining the cutting surface of the copper roller at 30-50 DEG C all the time so as to obtain a continuous cobalt-based amorphous alloy wire with the diameter of 10-200 microns. In addition, the invention carries out the preparation process under the condition of argon protection, prevents oxidization in the forming process of the cobalt-based amorphous alloy wire and influence brought by the reaction of other cooling media, maintains the surface brightness, uniform performance and high roundness of the cobalt-based amorphous alloy wire and can be widely applied to the fields of an alternating current sensor technology and a magnetic sensor technology.

Description

technical field [0001] The invention relates to the technical field of preparation of amorphous alloys, in particular to a method for preparing cobalt-based amorphous alloy wires. Background technique [0002] The amorphous state refers to a state in which the material has no time to crystallize during the rapid cooling and solidification process, and the atomic arrangement maintains the short-range order and long-range disorder of liquid metal. Compared with traditional crystalline alloy materials, amorphous alloy materials exhibit many excellent properties due to lack of long-range atomic order, such as good mechanical properties, strong corrosion resistance, and unique magnetoelectric properties etc., making amorphous alloy materials have a wide range of application prospects. [0003] Amorphous soft magnetic alloys as magnetic materials, referred to as amorphous soft magnetic alloys, not only have excellent soft magnetic properties, such as high magnetic permeability, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C45/04C22F1/10C22F1/02
Inventor 沈宝龙宁伟蔡平平乔文
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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