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Preparation technology of superfine spherical nickel, cobalt and iron ternary alloy powder

A ternary alloy and preparation technology, applied in the field of powder metallurgy, can solve the problems of uneven particle size distribution, long operation time, irregular shape, etc., achieve good dispersion and fluidity, not easy to agglomerate, and narrow particle size distribution Effect

Active Publication Date: 2015-11-11
兰云科
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process takes a long time to operate, low production efficiency, irregular shape, uneven particle size distribution, and produces a large amount of wastewater containing ammonia nitrogen and heavy metals, resulting in high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation process of ultrafine spherical nickel-cobalt-iron ternary alloy powder is characterized in that it comprises the following steps:

[0023] (1) Batching, adding nickel salt, cobalt salt, and iron salt to deionized water is configured into a mixed solution with a total concentration of 3mol / l, adding a dispersant and a catalyst, and stirring evenly;

[0024] (2) Liquid-phase reduction, adding the nickel-cobalt-iron mixed solution obtained from the ingredients into a liquid-phase reducing agent, and performing liquid-phase reduction in an autoclave. During the liquid-phase reduction, the temperature is 200°C, the pressure is 0.2mpa, and the reaction time is 2 hours. The stirring speed is 200r / min, the ratio of the total number of moles of nickel-cobalt-iron to the number of moles of liquid-phase reducing agent is 1:2, after the reaction is completed, liquid-phase-reduced nickel-cobalt-iron ternary alloy powder is obtained through filtration and washing;

[00...

Embodiment 2

[0034] A preparation process of ultrafine spherical nickel-cobalt-iron ternary alloy powder is characterized in that it comprises the following steps:

[0035] (1) Batching, adding nickel salt, cobalt salt, and iron salt to deionized water is configured into a mixed solution with a total concentration of 3mol / l, adding a dispersant and a catalyst, and stirring evenly;

[0036] (2) Liquid-phase reduction, adding the nickel-cobalt-iron mixed solution obtained from the ingredients into a liquid-phase reducing agent, and performing liquid-phase reduction in an autoclave. During the liquid-phase reduction, the temperature is 200°C, the pressure is 1.2mpa, and the reaction time is 2 hours. The stirring speed is 400r / min, the ratio of the total number of moles of nickel-cobalt-iron to the number of moles of liquid-phase reducing agent is 1:2, after the reaction is completed, liquid-phase reduced nickel-cobalt-iron ternary alloy powder is obtained through filtration and washing;

[00...

Embodiment 3

[0047] A preparation process of ultrafine spherical nickel-cobalt-iron ternary alloy powder is characterized in that it comprises the following steps:

[0048] (1) batching, adding nickel salt, cobalt salt, and iron salt to deionized water to configure a mixed solution with a total concentration of 1.8mol / l, adding a dispersant and a catalyst, and stirring evenly;

[0049] (2) Liquid-phase reduction, adding the nickel-cobalt-iron mixed solution obtained from the ingredients into a liquid-phase reducing agent, and performing liquid-phase reduction in an autoclave. During liquid-phase reduction, the temperature is 90°C, the pressure is 0.2mpa, and the reaction time is 2 hours. The stirring speed is 300r / min, the ratio of the total number of moles of nickel-cobalt-iron to the number of moles of liquid-phase reducing agent is 1:2.5, after the reaction is completed, liquid-phase-reduced nickel-cobalt-iron ternary alloy powder is obtained through filtration and washing;

[0050] (3)...

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PUM

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Abstract

The invention relates to a preparation technology of superfine spherical nickel, cobalt and iron ternary alloy powder and belongs to the field of powder metallurgy. The preparation technology includes the four steps of burdening, liquid phase reduction, high energy ball milling and post-processing. Nickel, cobalt and iron salt materials are added in a liquid phase reduction agent to be reduced. Ethyl alcohol is added in obtained reduced products, and mixtures are ball-milled in a high-energy ball mill. Then products are obtained through vacuum drying and packaging. The preparation technology of the superfine spherical nickel, cobalt and iron ternary alloy powder is provided. The technological process is short; production efficiency is high; waste water containing ammonia and nitrogen is not generated; cost is low; particle size distribution of obtained nickel, cobalt and iron is uniform; the Fsss particle size is small; and the nickel, cobalt and iron ternary alloy powder is spherical.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a preparation process of ultrafine spherical nickel-cobalt-iron ternary alloy powder. Background technique [0002] Iron-cobalt-nickel ternary alloy is an important transition metal alloy, which has excellent magnetic properties, physical and chemical properties, and has attracted widespread attention. It is reported that the cobalt-rich iron-cobalt-nickel ternary alloy has higher saturation magnetization and lower coercive force than permalloy (Ni80Fe20), and has excellent magnetostrictive properties, which can be used as a readout device for ultra-high-density magnetic recording. Taking the magnetic head, the iron-rich iron-cobalt-nickel ternary alloy has a low thermal expansion coefficient and can be used in precision microwave conduits, space mirrors, laser boxes, etc. [0003] Superalloys are highly alloyed iron-, nickel-, or cobalt-based austenitic metal materials. Supera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F9/04
Inventor 张弘
Owner 兰云科
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