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Soil erosion researching device

A soil corrosion and soil medium technology, which is applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, soil material testing, etc. It can solve the problems of easy errors caused by external influences and few device functions, so as to achieve small errors and accurate measurement results reliable effect

Inactive Publication Date: 2008-07-02
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a device for studying soil corrosion, which solves the problems that the existing devices have less functions and are prone to errors due to external influences.

Method used

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Embodiment Construction

[0022] The present invention is based on the back-insertion reference electrode method (Tang Hongyan et al., Research on Back-insertion Reference Measurement Method for Soil Corrosion System, Corrosion Science and Protection Technology, Volume 6, No. 4, Pages 352-356, October 1994) , the experimental setup was improved.

[0023] Such as figure 2 Shown, the present invention researches the electrochemical testing device of soil corrosion, comprises two test tanks: test tank I8 and test tank II8 ', two test tanks are communicated by latex tube 10, and the latex tube 10 is equipped with 2-3% agar Saturated KCl gel forms ion conductor, is about to dissolve the agar that the weight content is 2-3% in saturated KCl aqueous solution and inhale latex tube to form gel, as ion conduction channel; The height of the test tank is 350mm, the test tank is equipped with soil medium 12, a small hole is drilled 100mm away from the PVC board 14, and a hole of the same size is drilled at 15mm a...

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Abstract

The invention relates to soil corrosion field, specifically to a device for studying soil corrosion, aiming to solve the problems of the prior art, including less function, high dependence of external environment and high error generation liability. The device comprises two test tanks connected with each other through a latex tube provided with a ion conduction passage formed by saturated KCI gel containing 2-3% agar; and the test tank is composed of a PVC tube and a PVC plate disposed at the bottom of the PVC tube and filled with soil medium, and an auxiliary electrode with respect to the working face and a study electrode are disposed in upper part and lower part of the soil medium. The invention uses two independent test tanks communicated by the ion conduction passage in the latex tube, and can simulate different consolidation degree of soil. The soil may not be contacted with each other, so as to prevent diffusive penetration of water and salt. The inventive device has the advantages of reliable measurement results and low error; and can be used for studying soil corrosion, measuring soil resistivity and calculating the volume density and air rate of the test soil.

Description

technical field [0001] The invention relates to the field of soil corrosion, in particular to a device for studying soil corrosion. Background technique [0002] Soil is a complex heterogeneous medium composed of three phases of solid, liquid and gas. Although the corrosion mechanism of metal materials in soil is electrochemical corrosion, its corrosion behavior is much more complicated than that in ordinary media. Therefore, its research method has some particularities and certain difficulties. Electrochemical methods are commonly used methods to study soil corrosion, among which polarization curve method and AC impedance technique are the most widely used methods in electrochemical methods. Since the resistivity of the soil medium is generally very high, the high potential (IR) drop between the research electrode and the reference electrode will have a great impact on the accuracy of the measurement results when performing electrochemical measurements, so people usually u...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01N27/26
CPCG01N33/24
Inventor 尹桂勤张莉华常守文
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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