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Method of separating film from film composite material

A thin-film composite material and separation technology, applied in the field of separating thin films from thin-film composite materials, can solve the problems of unseparated thin films, deviations in actual thickness, and strict preparation requirements, so as to reduce experimental costs, easy to operate, The effect of low experimental cost

Inactive Publication Date: 2013-09-25
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of these methods are: it is difficult to prepare samples, there is a deviation between the measured film thickness and the actual thickness of the film, and the preparation requirements are strict, the experimental cost is high, and more importantly, no separated film is obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method of isolating thin films from thin film composites. First seal the upper plane of the film composite material with a sealant, and then sand the lower plane of the film composite material to expose the substrate plane to obtain the film composite material to be separated; then, at room temperature, the film composite material to be separated Immerse in the corrosion solution for corrosion. During the corrosion process, a passivation film will be produced on the surface of the substrate to prevent the corrosion of the substrate. Take out the thin film composite material to be separated from the corrosion solution every 20 to 30 minutes, and rinse the passivation film produced by corrosion with alcohol , continue to corrode, and repeat this operation until the substrate is completely corroded and dissolved by the corrosive solution to expose the entire film; then take out the film and wash it with alcohol to obtain a film separated from the film composite material. ...

Embodiment 2

[0019] A method of isolating thin films from thin film composites. First seal the upper plane of the film composite material with a sealant, and then sand the lower plane of the film composite material to expose the substrate plane to obtain the film composite material to be separated; then, at room temperature, the film composite material to be separated Immerse in the corrosion solution for corrosion. During the corrosion process, a passivation film will be produced on the surface of the substrate to prevent the corrosion of the substrate. Take out the thin film composite material to be separated from the corrosion solution every 20 to 30 minutes, and rinse the passivation film produced by corrosion with alcohol , continue to corrode, and repeat this operation until the substrate is completely corroded and dissolved by the corrosive solution to expose the entire film; then take out the film and wash it with alcohol to obtain a film separated from the film composite material. ...

Embodiment 3

[0023] A method of isolating thin films from thin film composites. First seal the lower plane of the thin film composite material with a sealant, and then sand the upper plane of the thin film composite material until the substrate plane is exposed to obtain the thin film composite material to be separated; then, at room temperature, the thin film composite material to be separated Immerse in the corrosion solution for corrosion. During the corrosion process, a passivation film will be produced on the surface of the substrate to prevent the corrosion of the substrate. Take out the thin film composite material to be separated from the corrosion solution every 20 to 30 minutes, and rinse the passivation film produced by corrosion with alcohol , continue to corrode, and repeat this operation until the substrate is completely corroded and dissolved by the corrosive solution to expose the entire film; then take out the film and wash it with alcohol to obtain a film separated from th...

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Abstract

The present invention specifically relates to a method of separating film from film composite material. The technical solution is as following: firstly sealing one plane of the film composite material with a sealant, and sanding the other plane until the basal body plane is exposed to obtain the film composite material to be separated; secondly, at room temperature, putting the film composite material to be separated into a corrosive liquid for corrosion, washing the film composite material with alcohol every other 20 to 30 minutes then continuing corrosion and repeating the operation until the entire film is exposed after the basal body is completely corroded and dissolved; thirdly, taking out the film and washing it, that is, the film is separated from the film composite material. The basal body material of the film composite material is stainless steel thin sheet, and the surface film is an oxidation film generated by high-temperature oxidation; the sealant is acid resisting epoxy resin AB adhesive; the corrosive liquid is a hydrochloric acid solution with the concentration of 30 to 90 percent. The method provided by the invention has the advantages of short film separation time, simple separation process, easy operation and low cost, and the process can be easily observed.

Description

technical field [0001] The invention belongs to the technical field of metal thin film materials, and in particular relates to a method for separating thin films from thin film composite materials. Background technique [0002] At present, the properties of thin films are getting more and more attention. In thin film composites, the influence of the properties of the film on the properties of the matrix is ​​real. This effect has attracted the attention of more and more researchers, especially when the substrate material is very thin, the effect of the thin film on the substrate properties is more obvious. Taking the oxide film on the surface of stainless steel as an example, the stainless and corrosion resistance of stainless steel is the result of the protection of the oxide film on the surface. While protecting the rust and corrosion resistance of the substrate, this oxide film will affect the mechanical properties of the stainless steel substrate, thereby affecting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/28
Inventor 朱远志李丙亮
Owner WUHAN UNIV OF SCI & TECH