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In situ observation device and method of pitting forming process

An observation device and in-situ technology, which can be used in measurement devices, instruments, scanning probe microscopy, etc., and can solve the problems of in-situ dynamic observation of topographic features.

Inactive Publication Date: 2014-08-06
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The object of the present invention is to provide an in-situ observation device for the pitting formation process. The in-situ observation device for pitting corrosion needs to solve the problem that existing instruments and devices cannot perform in-situ dynamic monitoring of the morphology characteristics of each stage of the pitting formation process. Observational technical issues to advance the development of pitting corrosion research

Method used

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  • In situ observation device and method of pitting forming process

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Embodiment 1

[0023] The above-mentioned atomic force microscope 1 uses the Dimension Edge large sample stage atomic force microscope of Bruker, Germany;

[0024] The sample stage 2 is made of plexiglass with a diameter of 150mm and a thickness of 20mm, with three positioning pin holes;

[0025] The electrolytic cell bottom plate 4, the electrolytic cell cylinder 6, the upper cover plate 8 and the upper panel 10 are all made of organic glass, and the electrolytic cell bottom plate 4 contains three positioning pins 3;

[0026] The compression bolt 7, compression nut 9 and positioning pin 3 are made of stainless steel;

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Abstract

The invention provides an in situ observation device of a pitting forming process. The device comprises an atomic force microscope, a sample table, an electrolytic tank, an upper cover plate and a test sample, wherein the electrolytic tank further consists of a bottom plate of the electrolytic tank, a positioning pin, a cylinder of the electrolytic tank, a sealing washer, an upper panel, a soaking liquid, a compressing bolt and a compressing nut. The invention further provides an in situ observation device of the pitting forming process using the device. The method comprises the following steps: combining the atomic force microscope with the electrolytic tank for soaking test; fixing the test sample; scanning and imaging the surface of the test sample by using the atomic force microscope periodically under a touch model to form an image file to carry out in situ dynamic tracking and observation to the test sample; and carrying out in situ dynamic observation to the topographic characteristic of the pitting forming process so as to obtain the topography and phase diagram of the pitting forming process to promote development of pitting research.

Description

Technical field [0001] The invention relates to an in-situ observation device and method, in particular to an in-situ observation device and method used in the formation process of pitting corrosion. Background technique [0002] Pitting corrosion is one of the common corrosion forms of passivation metals such as aluminum and stainless steel. It is easy to further develop into intergranular corrosion and local corrosion. It has a strong destructive effect. Therefore, studying the formation process and control factors of pitting corrosion can effectively avoid Inhibiting pitting corrosion is of great significance. The formation process of pitting corrosion can be divided into three stages, the initiation of pitting, the formation of metastable pitting and the development of steady-state pitting. For the study of pitting morphology characteristics, optical profiler, three-dimensional video microscope and other instruments can be used to observe the morphology characteristics of st...

Claims

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Application Information

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IPC IPC(8): G01Q60/24
Inventor 闫风洁李辛庚岳增武王学刚王晓明曹建梅樊志彬郭凯
Owner STATE GRID CORP OF CHINA
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