Method for preparing high-purity porous iron film by adopting electrochemical method

A porous iron and thin film technology, applied in electroforming, electrolysis process, etc., can solve the problems of poor iron oxidation resistance, etc., achieve high porosity, wide application range, and simple and feasible preparation method

Inactive Publication Date: 2012-01-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the poor oxidation resistance of iron in nature, the existing iron coatings mostly exist in the form of alloys. At pr...

Method used

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  • Method for preparing high-purity porous iron film by adopting electrochemical method
  • Method for preparing high-purity porous iron film by adopting electrochemical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The electroplating solution is composed of: ferrous chloride 0.1-0.3M, hydrochloric acid to control the pH of the electroplating solution 0-2, sodium dodecylbenzenesulfonate 0.05-0.5wt%, and the current density is selected to be 1-3A / cm 2 . Plating time 10 ~ 30s. The obtained high-purity porous iron film has a pore size of about 5 μm and a good microscopic appearance.

Embodiment 2

[0029] The electroplating solution is composed of: ferrous ammonium sulfate 0.1-0.3M, sulfuric acid controls the pH of the electroplating solution 0-2, sodium dodecyl sulfate 0.05-0.5wt%, and the current density is selected to be 1-3A / cm 2 . Plating time 10 ~ 30s. The pore size of the obtained high-purity porous iron film is about 3 μm, and the pore wall structure is good.

Embodiment 3

[0031] The electroplating solution is composed of: ferrous acetate 0.1-0.3M, carboxylic acid to control the pH of the electroplating solution 0-2, OP-10 surfactant 0.05-0.5wt%, the current density selection 1-3A / cm 2 . Plating time 10 ~ 30s. The pore size of the obtained high-purity porous iron film is about 5 μm, and the particles constituting the pore wall structure are relatively small.

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Abstract

The invention relates to a preparation method of a high-purity porous iron film. According to the invention, an electrochemical method is adopted in the preparation method of the high-purity porous iron film. The preparation method is characterized in that size-reliable hydrogen bubbles formed on a substrate are taken as a template, and electroplating is carried out for a certain time period in an electroplating solution containing ferrous ions and hydrogen ions under the current density to form the high-purity porous iron film. In the invention, under the high current density which is higher than 0.5A/cm<2> and is less than 5A/cm<2>, the current density of 1-3A/cm<2> is preferably selected for electroplating, the ferrous ions can exist in inorganic salt and organic salt forms, the concentration of the ferrous ion is 0.1-0.5M preferably, the hydrogen ions can exist in inorganic acid and organic acid forms, the pH value of the electroplating solution is controlled to 0-2 preferably, electroplating time is 10-30 seconds preferably, and the concentration of a surfactant for controlling the sizes of the hydrogen bubbles is 0.05-0.5wt% preferably.

Description

technical field [0001] The invention relates to a porous metal iron film, in particular to a method for obtaining a high-purity porous iron film by electrochemical means. Background technique [0002] Porous metal is a low-density functional material composed of a large number of metal particles (or fibers) and micropores of a certain size, that is, a large number of directional or random pores are dispersed in the metal, which has dual properties of structure and function. In the laser inertial confinement fusion (ICF) experiment, the compression and implosion of the target capsule depend on the radiation characteristics of the target cavity, so the target cavity is very important in the laser confinement fusion experiment. Since iron element is the final product of nuclear fission and nuclear fusion, the energy storage efficiency of iron nucleus is higher than that of lighter and heavier elements. Secondly, due to the high stability of iron in the process of nuclear reacti...

Claims

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Application Information

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IPC IPC(8): C25C5/02C25D1/08
Inventor 王妮胡文成
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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