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Method for generating, controlling and measuring thin liquid film on metal surface

A metal surface and measurement method technology, which is applied in the field of generating, measuring and controlling thin liquid film on metal surface, can solve the problems that are not conducive to the corrosion test of metal thin liquid film, and the thickness of thin liquid film cannot be controlled, so as to achieve stable thickness and stable thickness. Precise, easy-to-handle results

Active Publication Date: 2019-03-19
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thickness of the thin liquid film formed in this way will change with time, and the thickness of the thin liquid film cannot be controlled, which is not conducive to the corrosion test of the metal thin liquid film in the simulated atmospheric environment

Method used

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  • Method for generating, controlling and measuring thin liquid film on metal surface
  • Method for generating, controlling and measuring thin liquid film on metal surface
  • Method for generating, controlling and measuring thin liquid film on metal surface

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: as Figure 1-7 As shown, a thin liquid film generation device on a metal surface includes a thin liquid film generation device, a sample stage, a thin liquid film thickness detection device, and a control computer.

[0040] Wherein, the thin liquid film generating device includes a box body with an atomizer, and a liquid storage tank is arranged in the box body, and the liquid storage tank is connected with the housing of the atomizer through a pump. The shell of the nebulizer is also connected with compressed air, and a mist flow pipe is arranged on the other side of the shell opposite to the compressed air, and the mist flow pipe extends out of the box and is aligned with the sample stage.

[0041] A sample placement area is arranged on the sample platform, and the metal sample is placed on the sample placement area, and the outlet of the mist flow pipe is aligned with the metal sample. Wherein, the outlet of the mist flow pipe can be fixed or adjustabl...

Embodiment 2

[0044] Embodiment 2: as Figure 1-7 As shown in and 13, a thin liquid film generation device on a metal surface includes a thin liquid film generation device, a sample stage, a thin liquid film thickness detection device, and a control computer.

[0045] The thin liquid film generating device includes a box body 2 with an atomizer 1, and a liquid storage tank 3 is arranged in the box body, and the liquid storage tank is connected with the housing 5 of the atomizer through a pump 4, The shell of the nebulizer is also connected with compressed air, and a mist flow pipe 6 is arranged on the other side of the shell opposite to the compressed air, and the mist flow pipe extends out of the box and is aligned with the sample stage.

[0046] Wherein, the outlet of the mist flow pipe is also connected with a mist outlet box 7, and a mist outlet 71 is arranged on the end face of the mist outlet box. And the mist outlet can be seen through the size of the opening of the valve regulator,...

Embodiment 3

[0067] Embodiment 3: as Figure 8-12 This embodiment provides a method for forming a thin liquid film on a metal surface, comprising the following steps:

[0068] The first step: place the metal sample in the sample placement area on the sample stage;

[0069] Step 2: Add electrolyte solution to the calibration position in the liquid storage tank, turn on the heater to heat the electrolyte solution to 30°C;

[0070] Step 3: Start the nebulizer, air compressor, circulating peristaltic pump and sample stage in sequence, adjust the atomization volume of the nebulizer to 2.5kg / h~4.5kg / h, and the mist output pressure to 0.1~0.15 Mpa. The platform inclination angle is 0~60°;

[0071] Step 4: Control the displacement of the X-axis guide mechanism, Y-axis guide mechanism and Z guide mechanism through the control computer to adjust the position of the fiber optic probe, run the control software of the fiber optic spectrometer, adjust the position of the fiber optic probe, and optimiz...

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Abstract

The invention discloses a method for generating, controlling and measuring a thin liquid film on a metal surface. The method is characterized by comprising a thin liquid film generation device, a sample table, a thin liquid film thickness detection device and a control computer, wherein the thin liquid film generation device comprises a tank with an atomizer; a liquid storage tank is arranged in the tank, and is connected with the shell of the atomizer; the shell is further connected with compressed air; a spray pipeline is arranged on the shell opposite to the side of the compressed air, extends out of the tank body and is aligned to the sample table; a sample placing area is arranged on the sample table, and is opposite to the outlet of the spray pipeline; and the sample table is provided with adjustable dip angles. By adopting the equipment, a thin liquid film with controllable and stable thickness can be generated on the metal surface.

Description

Technical field: [0001] The invention relates to an electrochemical measurement system in the measurement of atmospheric erosion, corrosion or anticorrosion, in particular to a method for generating, measuring and controlling a thin liquid film on a metal surface. Background technique: [0002] The corrosion of metals in the atmosphere is an electrochemical process. Since water vapor condenses or adsorbs on the metal surface to form a thin liquid film, the corrosion process not only obeys the general law of electrochemical corrosion, but also has the characteristics of atmospheric corrosion itself. Atmospheric corrosion is electrochemical corrosion under a thin liquid film. The kinetics (speed) of the corrosion process is closely related to the polarization of electrodes (cathode, anode), mass transfer process and ion migration. For example, as the thickness of the liquid film on the metal surface increases, the thickness of the effective diffusion layer of oxygen through th...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01B11/06
CPCG01B11/06G01N17/02
Inventor 何建新周堃佘祖新张伦武王玲谭勇朱玉琴陈源
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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