Measurement method for solution resistance in dynamic pure water system metal corrosion electrochemical measurement

A solution resistance, metal corrosion technology, applied in the direction of fluid resistance measurement, etc., can solve problems such as the influence of electrode measurement, the influence of metal electrode surface and electrochemical corrosion control process, etc., to achieve continuous measurement and accurate measurement results.

Inactive Publication Date: 2013-10-23
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

In addition, it is still impossible to overcome the influence of random, high-frequency, and large-scale fluctuations of the open circuit potential of the electrode on the measurement
[0008] When the conductance (resistance) direct measurement method is used, the voltage applied to the electrode is much higher than the normal excitation voltage, which is easy to seriously affect the surface of the metal electrode and the electrochemical corrosion control process
[0009] Therefore, at present, there is no method suitable for the determination of solution resistance in the dynamic pure water electrochemical measurement system at home and abroad.

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  • Measurement method for solution resistance in dynamic pure water system metal corrosion electrochemical measurement

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] As shown in the accompanying drawings, one of the measurement devices used in the measurement method of the solution resistance in the electrochemical measurement of metal corrosion in a dynamic pure water system of the present invention, the measurement system includes a measurement pool 1, and the pure aqueous solution placed in the measurement pool 1 2. The working electrode 3, the auxiliary electrode 4 and the reference electrode 5 inserted into the pure aqueous solution 2, the working electrode 3, the auxiliary electrode 4 and the reference electrode 5 are connected to the electrochemical measuring instrument 6, and the conductive electrodes inserted into the pure aqueous solution 2 are also included. Performance parameter measuring instruments7. The measuring cell 1, the pure aqueous solution 2, the working electrode 3, t...

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Abstract

The invention relates to a measurement method for solution resistance in dynamic pure water system metal corrosion electrochemical measurement. The measurement method comprises the steps of firstly measuring the solution resistance in static pure water system metal corrosion electrochemical measurement; then measuring electroconductive performance parameters of static and dynamic pure water solution; and finally calculating to obtain the solution resistance in the dynamic pure water system metal corrosion electrochemical measurement according to the proportioning relation of the electroconductive performance parameters and the solution resistance. According to the measurement method disclosed by the invention, the measurement of the solution resistance is not influenced by random, high-frequency, large-amplitude fluctuation phenomena of open circuit potential of electrodes in the dynamic pure water system metal corrosion electrochemical measurement, fast and continuous measurement can be realized, and the measurement results are accurate and reliable.

Description

technical field [0001] The invention relates to the technical field of measurement of solution resistance in electrochemical measurement of metal corrosion in pure water system, in particular to a measurement method of solution resistance in electrochemical measurement of metal corrosion in dynamic pure water system. Background technique [0002] The influence of solution resistance in electrochemical measurement of metal corrosion in pure water system cannot be ignored. Accurate determination and compensation of solution resistance is the prerequisite for accurate and reliable electrochemical measurement results of metal corrosion in pure water system. [0003] At present, the methods used to measure the solution resistance in the electrochemical measurement of metal corrosion at home and abroad include: constant current step method, broken current method, AC impedance method, equidistant measurement method, conductance or resistance direct measurement method. [0004] Dur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/22
Inventor 曹杰玉李俊菀宋敬霞
Owner XIAN THERMAL POWER RES INST CO LTD
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