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Electrolyte for preparing iron-cobalt-nickel three-component 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: 2017-08-11
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, trifluoromethanesulfonate and citric acid to form a solution; then, add the main salt 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 san...

Embodiment 3

[0048] Electrolyte preparation: First, in the static mixing equipment, in the electrolyte preparation equipment, mix water, triflate 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×10mm×0.2mm copper ...

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Abstract

The invention discloses an electrolyte for preparing iron-cobalt-nickel three-component alloy powder and particularly provides an electrolyte used for the process of ultrasonically enhancing Fe2+, Co2+ and Ni2+ cathode electrochemical co-deposition. According to the electrolyte, ferrous sulfate, cobalt sulfate and nickel sulfate serve as precursors for preparing an iron-cobalt-nickel three-component alloy, alkyl glycoside serves as a dispersant of the iron-cobalt-nickel three-component alloy powder, alkyl glycoside and trifluoromethyl sulfonate serve as surface protectants of the iron-cobalt-nickel three-component alloy powder, and water serves as a solvent. Firstly, the water, trifluoromethyl sulfonate and citric acid are mixed in electrolyte preparation equipment; then main salt ferrous sulfate, cobalt sulfate and nickel sulfate are added and mixed into a solution; and finally the alkyl glycoside surfactant is added. The iron-cobalt-nickel three-component alloy powder with the controllable composition, granularity and morphology can be prepared through electro-deposition of the electrolyte under the ultrasonic effect.

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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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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