A kind of electrolytic solution for preparing iron-cobalt-nickel ternary alloy powder

A ternary alloy and electrolyte technology, which is applied in the field of electrolyte, can solve the problems of low deposition current efficiency, large particle size of deposition products, and difficulty in continuous processing, and achieve the effects of controlling particle size, preventing particle agglomeration, and preventing oxidation

Active Publication Date: 2019-06-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Usually, the iron-cobalt-nickel ternary alloy powder prepared by electrodeposition has a loose structure on the electrode, and the electrode will lose its activity quickly, so it is difficult to carry out continuous
[0008] (4) At high current density, although the deposition rate is high, there is the problem of low deposition current efficiency, and the problem of large particle size of the deposited product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Electrolyte preparation: firstly mix water, trifluoromethanesulfonate and citric acid in the tank-type stirred electrolyte preparation equipment; then add the main salt ferrous sulfate, cobalt sulfate and nickel sulfate to the solution and mix solution; add the alkyl glycoside surfactant last.

[0033] The prepared electrolyte composition: Fe 2+ 、Co 2+ 、Ni 2+ Concentrations are 0.01mol L -1 , 0.01mol·L -1 and 0.40mol·L -1 , the concentrations of lithium trifluoromethanesulfonate and citric acid were 0.1mol L -1 and 0.20mol·L -1 , the surfactant is octyl glucoside, its glucose polymerization degree is 1.6, and the addition amount is 0.8% of the mass percentage of the electrolyte solution.

[0034] The steps of making iron-cobalt-nickel ternary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0035] (1) Pretreatment of the base electrode: a 100mm×10mm×0.2mm copper sheet was polished with metallographic sandpaper...

Embodiment 2

[0041] Electrolyte preparation: First, in the tubular mixed electrolyte preparation equipment, mix water, triflate and citric acid to form a solution; then, add the main salts ferrous sulfate and cobalt sulfate to the solution Mix with nickel sulfate to form a solution; finally, add the alkyl glycoside surfactant.

[0042] The prepared electrolyte composition: Fe 2+ 、Co 2+ 、Ni 2+ Concentrations are 0.02mol L-1 , 0.02mol·L -1 and 0.20mol·L -1 , sodium trifluoromethanesulfonate and citric acid were 0.20mol L -1 and 0.40mol·L -1 , the surfactant is decanyl polyglucoside, the degree of glucose polymerization is 1.8, and the addition amount is 0.4% of the mass percentage of the electrolyte.

[0043] The steps of making iron-cobalt-nickel ternary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0044] (1) Pretreatment of the base electrode: a 100mm×10mm×0.2mm copper sheet was polished with metallographic sandpaper to remove...

Embodiment 3

[0048] Electrolyte preparation: First, in the static mixing equipment, in the electrolyte preparation equipment, mix water, trifluoromethanesulfonate and citric acid to form a solution; then, add the main salt ferrous sulfate, sulfuric acid to the solution Cobalt and nickel sulfate are mixed into a solution; finally, the alkyl glycoside surfactant is added.

[0049] The prepared electrolyte composition: Fe 2+ 、Co 2+ 、Ni 2+ Concentrations are 0.40mol L -1 , 0.40mol·L -1 and 0.40mol·L -1 , the concentrations of potassium trifluoromethanesulfonate and citric acid were 0.30mol L -1 and 0.40mol·L -1 , the surfactant is octadecyl glucoside, its glucose polymerization degree is 2.0, and the addition amount is 0.2% of the mass percentage of the electrolyte solution.

[0050] The steps of making iron-cobalt-nickel ternary alloy powder through ultrasonic-electrodeposition coupling in the above electrolyte are as follows:

[0051] (1) Pretreatment of the base electrode: a 100mm×1...

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Abstract

The invention discloses an electrolyte solution for preparing iron-cobalt-nickel ternary alloy powder, in particular, ultrasonically strengthened Fe 2+ 、Co 2+ 、Ni 2+ The electrolyte used in the cathodic electrochemical co-deposition process. The electrolyte uses ferrous sulfate, cobalt sulfate and nickel sulfate as precursors for preparing iron-cobalt-nickel ternary alloys, alkyl glycosides as dispersants for iron-cobalt-nickel ternary alloy powders, alkyl glycosides and three Fluoromethylsulfonate is used as a surface protection agent for iron-cobalt-nickel ternary alloy powder, and water is used as a solvent. First, in the electrolyte preparation equipment, mix water, trifluoromethanesulfonate and citric acid; then add the main salt ferrous sulfate, cobalt sulfate and nickel sulfate to form a solution; finally add alkyl glycoside surfactant. The iron-cobalt-nickel ternary alloy powder with controllable composition, particle size and shape can be prepared by using the electrolyte and electrodepositing under the action of ultrasound.

Description

technical field [0001] The invention relates to an electrolytic solution for preparing iron-cobalt-nickel ternary alloy powder, in particular, ultrasonically strengthened Fe 2+ 、Co 2+ 、Ni 2+ The invention relates to an electrolyte solution used in a cathodic reduction co-deposition process, belonging to the technical field of preparation of functional metal alloy materials. Background technique [0002] Iron-cobalt-nickel ternary alloys have excellent magnetic, electrical and mechanical properties and are important functional magnetic materials. Iron-cobalt-nickel ternary alloy has the characteristics of high strength and low thermal expansion coefficient. It is widely used as computer storage device, electromagnetic shielding of electronic equipment and electronic components. It has become an important part of new materials and high technology. [0003] The existing technologies for preparing cobalt-nickel alloy powder mainly include chemical method, mechanical crushing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C5/02C25C7/08
CPCC25C5/02C25C7/08
Inventor 许文林李宝同王大为王雅琼
Owner YANGZHOU UNIV
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