Preparation method of (Mn, Co)3O4 spinel coating

A technology of spinel coating and deposition layer, which is applied in the field of preparation of 3O4 spinel coating, can solve the problems of high cost, unstable coating, complex process, etc., and achieve low cost, reduced impact, and simple process Effect

Active Publication Date: 2013-05-15
昆明理工大学设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex process, high cost and unstable coating in the prior art, and to obtain dense, uniform and stable (Mn, Co) through the electrodeposition sintering process. 3 o 4 spinel coating

Method used

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  • Preparation method of (Mn, Co)3O4 spinel coating
  • Preparation method of (Mn, Co)3O4 spinel coating
  • Preparation method of (Mn, Co)3O4 spinel coating

Examples

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Effect test

Embodiment 1

[0030] Embodiment 1: (Mn, Co) of the present embodiment 3 o 4 The preparation steps of the spinel coating include:

[0031] (1) Will (Mn,Co) 3 o 4 The powder and absolute ethanol are prepared according to a certain ratio, and the solution is prepared by ultrasonic stirring at room temperature (Mn, Co) 3 o 4 Powder suspension; (Mn,Co) 3 o4 Powder is Co 3 o 4 and Mn 3 o 4 The mass ratio of the mixed powder is 0.5:1.5, and the particle size of the mixed powder is 0.8 μm. (Mn,Co) 3 o 4 The solid-liquid ratio of powder and absolute ethanol is 0.2g:80mL. Ultrasonic stirring is the use of ultrasonic waves with a frequency of 20KHz, for the configured (Mn, Co) 3 o 4 The mixed solution of powder and absolute ethanol was stirred for 3 times, and the time for each treatment was 30 minutes, and the interval between each treatment was 50 minutes.

[0032] (2) The prepared (Mn,Co) 3 o 4 Put the powder suspension into the electrodeposition device, use the alloy substrate wit...

Embodiment 2

[0034] Embodiment 2: (Mn, Co) of the present embodiment 3 o 4 The preparation steps of the spinel coating include:

[0035] (1) Will (Mn,Co) 3 o 4 The powder and absolute ethanol are prepared according to a certain ratio, and the solution is prepared by ultrasonic stirring at room temperature (Mn, Co) 3 o 4 Powder suspension; (Mn,Co) 3 o 4 Powder is Co 3 o 4 and Mn 3 o 4 The mass ratio of the mixed powder is 0.8:0.5, and the particle size of the mixed powder is less than 1 μm. (Mn,Co) 3 o 4 The solid-liquid ratio of powder and absolute ethanol is 5g: 100mL. Ultrasonic stirring is the use of ultrasonic waves with a frequency of 80KHz, for the configured (Mn, Co) 3 o 4 The mixture of powder and absolute ethanol was stirred for 4 times, each treatment time was 60 minutes, and the interval between each treatment was 10 minutes.

[0036] (2) The prepared (Mn,Co) 3 o 4 Put the powder suspension into the electrodeposition device, use the alloy substrate with surface...

Embodiment 3

[0038] Embodiment 3: (Mn, Co) of the present embodiment 3 o 4 The preparation steps of the spinel coating include:

[0039] (1) Will (Mn, Co) 3 o 4 The powder and absolute ethanol are prepared according to a certain ratio, and the solution is prepared by ultrasonic stirring at room temperature (Mn, Co) 3 o 4 Powder suspension; (Mn,Co) 3 o 4 Powder is Co 3 o 4 and Mn 3 o 4 The mass ratio of the mixed powder is 1.5:1, and the particle size of the mixed powder is less than 1 μm. (Mn,Co) 3 o 4 The solid-liquid ratio of powder and absolute ethanol is 3g: 60mL. Ultrasonic stirring is the use of ultrasonic waves with a frequency of 100KHz, for the configured (Mn, Co) 3 o 4 The mixture of powder and absolute ethanol was stirred and treated 5 times, each treatment time was 90 minutes, and the interval between each treatment was 60 minutes.

[0040] (2) The prepared (Mn,Co) 3 o 4 Put the powder suspension into the electrodeposition device, use the alloy substrate with ...

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Abstract

The invention relates to a preparation method of a (Mn, Co)3O4 spinel coating, and belongs to the technical fields of preparation and property of a ceramic coating. The preparation method comprises the steps of: mixing by taking (Mn, Co)3O4 powder as a material and taking absolute ethyl alcohol as a solvent, wherein the percent content of mass fraction of the (Mn, Co)3O4 powder is 1-15%; carrying out ultrasonic agitation to obtain (Mn, Co)3O4 powder suspension liquid; then depositing a (Mn, Co)3O4 coating on the surface of a metal substrate under the effect of 200-700V of constant voltage or pulse voltage; and drying and then carrying out high temperature thermal treatment to obtain the (Mn, Co)3O4 spinel coating. The method disclosed by the invention has the advantages of simple technological operation, low cost, good formed coating structure compactness and the like.

Description

technical field [0001] The present invention relates to a (Mn, Co) 3 o 4 The invention discloses a method for preparing a spinel coating, which belongs to the technical field of ceramic coating preparation and performance. Background technique [0002] In a high-temperature fuel cell, the connector not only provides a conductive connection between the cathode and anode of the adjacent battery unit, but also serves as a physical barrier for the oxidation and reduction atmosphere. The service conditions are harsh and the performance requirements are high: good conductivity ; No reaction and diffusion with adjacent components (cathode and anode) materials; good anti-oxidation, anti-sulfurization and carburization properties, etc. [0003] The preparation of coatings on the surface of the alloy connector is one of the effective ways to prevent the inward diffusion of oxygen and the outward diffusion of Cr, and to slow down the growth of chromium oxide and Cr poisoning of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/08
Inventor 詹肇麟张卫伟刘忠李莉刘建雄李增
Owner 昆明理工大学设计研究院有限公司
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