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Metal surface local region precise corrosion method

A local area, local corrosion technology, applied in the field of detection, can solve problems such as unpublished, and achieve the effect of precise control of corrosion depth

Inactive Publication Date: 2019-01-15
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] According to the comprehensive public literature and information, the method of manual control and precise preparation of corrosion samples in local micro-regions of metal materials has not been published in the world.

Method used

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  • Metal surface local region precise corrosion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Such as figure 1 As shown in the process flow, a method for precise etching of a local area of ​​a metal surface includes the following steps:

[0092] 1) Mount the metal zirconium sample, the zirconium size is 5mm*5mm*1mm, the mounting material is epoxy resin, the overall diameter after mounting is 15mm, and the thickness is 5mm, such as figure 2 ;

[0093] 2) Grinding and polishing the mounted sample 5mm*5mm as the surface to be corroded, exposing the zirconium smooth surface; grinding and polishing using 500#, 800#, 1200#, 2400# different particle sizes of sandpaper from coarse to fine, Polish with a polishing cloth to reveal a zirconium finish such as image 3 ;

[0094] 3) Mask the exposed zirconium smooth surface. Specifically, use 502 glue for masking. The thickness of the mask is about 1mm. The mask completely covers the exposed smooth surface. There are no air bubbles or pores between the membranes, such as Figure 4 , the specific masking method is: appl...

Embodiment 2

[0099] Such as figure 1 As shown in the process flow, a method for precise etching of a local area of ​​a metal surface includes the following steps:

[0100] 1) Mount the metal zirconium sample, the zirconium size is 5mm*5mm*1mm, the mounting material is epoxy resin, the overall diameter after mounting is 15mm, and the thickness is 5mm, such as figure 2 ;

[0101] 2) Grinding and polishing the mounted sample 5mm*5mm as the surface to be corroded, exposing the zirconium smooth surface; grinding and polishing using 500#, 800#, 1200#, 2400# different particle sizes of sandpaper from coarse to fine, Polish with a polishing cloth to reveal a zirconium finish such as image 3 ;

[0102] 3) Mask the exposed zirconium smooth surface. Specifically, paraffin wax is used for masking. The thickness of the mask is about 1mm. The mask completely covers the exposed smooth surface. The zirconium smooth surface is in good contact with the mask, and the smooth surface and the mask There a...

Embodiment 3

[0107] Such as figure 1 As shown in the process flow, a method for precise etching of a local area of ​​a metal surface includes the following steps:

[0108] 1) Mount the metal zirconium sample, the zirconium size is 5mm*5mm*1mm, the mounting material is epoxy resin, the overall diameter after mounting is 15mm, and the thickness is 5mm, such as figure 2 ;

[0109] 2) Grinding and polishing the mounted sample 5mm*5mm as the surface to be corroded, exposing the zirconium smooth surface; grinding and polishing using 500#, 800#, 1200#, 2400# different particle sizes of sandpaper from coarse to fine, Polish with a polishing cloth to reveal a zirconium finish such as image 3 ;

[0110] 3) Mask the exposed zirconium smooth surface. Specifically, hot melt adhesive is used for masking. The thickness of the mask is about 1mm. The mask completely covers the exposed smooth surface. The zirconium smooth surface is in good contact with the mask, and the smooth surface No air bubbles ...

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Abstract

The invention relates to the field of detection, in particular to a metal surface local region precise corrosion method. The method is characterized in that by aiming at the corrosion on a metal material, after sample embedding, and a to-be-corroded surface is ground and polished, anti-corrosion mask treatment is performed; a local mask region in a polishing surface mask position is removed; the local region of a metal surface is exposed; a natural corrosion or accelerated corrosion method is used for corroding the exposed local metal region; all masks are removed to obtain local corrosion samples. Any surface of samples of any shape is corroded; the local corrosion region can be a point, a line or a surface; the number, the size, the shape, the position and the corrosion depth of the local corrosion region can be precisely controlled; a series of standard samples with consistency can be prepared.

Description

technical field [0001] The invention relates to the field of detection, and further relates to the field of metal corrosion, in particular to a method for precise corrosion of a local area of ​​a metal surface. Background technique [0002] Localized corrosion of metal materials is a phenomenon in which there is no corrosion on the surface of the metal substrate and only local areas are corroded. At present, the methods of obtaining localized corrosion samples mainly include natural exposure of samples, intercepting a section of samples from corroded materials, and electrochemically accelerated corrosion. The size, shape, location, quantity and depth of corrosion areas are uncontrollable. At present, there is no method to precisely control the localized corrosion of metal materials, especially the precise control of corrosion in micron-sized regions has not been reported. [0003] The invention patent with the application number CN201720469593.5 discloses a metal local corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/02C25F3/14
CPCC23F1/02C25F3/14
Inventor 路超陈丕恒廖益传杨振飞史鹏法涛
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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