CN105424590B - The sensor and detection method detected for steel component or test piece atmospheric corrosion - Google Patents
The sensor and detection method detected for steel component or test piece atmospheric corrosion Download PDFInfo
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- CN105424590B CN105424590B CN201510897372.3A CN201510897372A CN105424590B CN 105424590 B CN105424590 B CN 105424590B CN 201510897372 A CN201510897372 A CN 201510897372A CN 105424590 B CN105424590 B CN 105424590B
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Abstract
The present invention relates to a kind of sensor detected for steel component or test piece atmospheric corrosion, including the support column for supporting sensor, reference electrode (2), the working electrode electrical contact leads (5) directly contacted to electrode (1), with steel component to be measured or strip, plastic wire (3) and magnet (4), it is characterized in that, magnet (4) is fixed with the lower end of support column, reference electrode (2) and the lower end to electrode (1) are isolated between steel component to be measured or strip by plastic wire (3).Present invention simultaneously provides a kind of method for carrying out steel component or the detection of test piece atmospheric corrosion using such a sensor.The present invention can be achieved to detect large-scale steel component or the live real-time corrosion of test piece prison, noiseless to tested systems using electrochemical noise technique, belong to Non-Destructive Testing.
Description
Technical field
The present invention relates to a kind of atmospheric corrosion electrochemistry noise detection sensor for being applied to steel component (or test piece), category
In corrosion electrochemistry field.
Background technology
How to evaluate the atmospheric corrosion performance pairing reason selection ferrous materials of ferrous materials and its evaluate the use longevity of component
Life has important directive significance.Although traditional weightless test method can evaluate the atmospheric corrosion resistance of ferrous materials, not
The real-time measurement of atmospheric corrosion can be realized, and it is relatively time-consuming.What it is due to atmospheric corrosion is in the nature that electrochemistry under thin liquid film is rotten
Erosion, therefore electrochemical techniques are evaluation ferrous materials corrosion resisting property and the research maximally effective means of corrosion mechanism.In recent years, it is electrochemical
Noise technique starts the atmospheric corrosion process for studying ferrous materials.Electrochemistry noise (electrochemical
Noise) technology has the characteristics of in situ lossless, may change corroding electrode without being applied with to tested electrode in measurement process
The external disturbance of process, without pre-establishing the electrode process model of tested systems, and can realize ferrous materials corrosion type and
The remote monitoring of extent of corrosion.But design corrosion electrochemistry sensor, using electrochemical noise technique to steel component (or examination
Piece) corrode scene prison detection, there is not been reported.Patent of the present invention utilizes electricity by designing a kind of corrosion electrochemistry sensor
The atmospheric corrosion process of chemical noises technical research steel component (or test piece), the means are noiseless to tested systems, operation side
Just, can be achieved to supervise detection to the long-term corrosion of ferrous materials.
The content of the invention
It is an object of the invention to overcome the shortcomings of existing atmospheric corrosion detection technique, there is provided a kind of on-line checking steel material
Expect the electrochemical sensor of atmospheric corrosion, and be based on such a sensor, there is provided a kind of ferrous materials corrosion detecting method.Pass through electricity
Chemical noises technical research corrosion process, so as to judge the corrosion resistance of ferrous materials.
The purpose of the present invention is achieved by following technical proposals.
A kind of sensor detected for steel component or test piece atmospheric corrosion, including for supporting the support of sensor
Post, reference electrode (2), to electrode (1), the working electrode electrical contact leads directly contacted with steel component to be measured or strip
(5), plastic wire (3) and magnet (4), it is characterised in that be fixed with magnet (4) in the lower end of support column, reference electrode (2) and right
The lower end of electrode (1) is isolated between steel component to be measured or strip by plastic wire (3).
To steel component under naval air environment or the Corrosion monitoring of test piece, the reference electrode used (2) is high purity zinc electricity
Pole, it is platinum plating Ti electrode to electrode (1).To the Corrosion monitoring of steel component under city atmospheric environment, the reference electrode (2) of use
It is platinum plating Ti electrode to electrode (1) for high-purity antimony electrode.
Present invention simultaneously provides a kind of steel component realized using above-mentioned sensor or test piece atmospheric corrosion detection side
Method, including following step：
(1) plastic wire (3) first is placed in tested steel component or strip, sensor is then placed thereon, adjusted
Reference electrode (2) and to the distance between electrode (1) and plastic wire (3), makes two described electrodes compress plastic wire (3)；
(2) working electrode electrical contact leads (5) are placed in sensor proximity, the wire in lead (5) and steel table to be measured
Face is connected, and outside is adsorbed in steel component to be measured or strip by magnet (4)；
(3) by reference electrode (2) and to electrode (1) and working electrode electrical contact leads (5) with zero resistance circuit
Detection means is connected, and carries out electrochemistry noise test.
Compared with prior art, the beneficial effect of patent of the present invention is：It can be achieved to large-scale steel component (or test piece)
Live real-time corrosion prison detection, it is noiseless to tested systems using electrochemical noise technique, belong to Non-Destructive Testing.
Brief description of the drawings
Fig. 1 is schematic diagram when atmospheric corrosion electrochemistry noise detection sensor works.
Description of reference numerals is as follows：1 pair of electrode；2 reference electrodes；3 plastic wires；4 magnet；5 working electrode electrical contact leads
Embodiment
One kind is applied to the atmospheric corrosion electrochemistry noise detection sensor of steel component (or test piece), as steps described below
Carry out：
Fig. 1 is atmospheric corrosion electrochemistry noise detection sensor operating diagram.The detection of atmospheric corrosion electrochemistry noise passes
Sensor mainly includes two electrode-reference electrodes 2 and to electrode 1 (selecting different reference electrodes 2 according to test environment), electricity
Pole span is adjustable from the position of test surfaces.Sensor has three support pillars, and each pillar includes magnet 4, can be adsorbed on to be measured
Steel surface.
Working electrode electrical contact leads 5 are directly electrically connected with steel surface to be measured, Sensor Reference electrode 2 and to electrode 1
One layer of plastic wire 3 is put between steel surface to be measured.During test, reference electrode 2 and the position to electrode 1 are adjusted, until compressing
Plastic wire 3.Plastics thickness of net is 500 microns, and two aspect important function are played in atmospheric corrosion detection：First, avoid sensor
With steel surface to be measured in electrical communication, on the other hand because plastic wire has network structure and very thin thickness, primarily to subtracting
The influence of solution resistance during small test, so that electrochemistry noise is tested.Ferrous materials can be gathered using the sensor to corrode
The electrochemical potentials noise signal and current noise signal of journey.Utilize the corrosion resistance of noise resistance value evaluation ferrous materials.Below
Technical scheme is further described by specific embodiment.
The corrosion monitoring and detecting of steel component under the naval air environment of example 1.：Reference electrode 2 is high-purity zinc electrode, to electrode 1
For platinum plating Ti electrode.A piece of about 500 microns of thickness, about 2 centimetres of diameter are placed on steel component (or test piece) surface to be detected
Plastic wire 3.Sensor is placed, and plastic wire 3 is pushed down, sensor is adsorbed on steel samples to be measured by magnet 4.Adjust
Whole reference electrode 2 and the position to electrode 1, until two electrodes compress plastic wire 3.Working electrode electrical contact leads 5 are placed in
Sensor proximity, the copper cash in lead 5 are connected with steel surface to be measured, and outer magnet 4 is adsorbed in steel component to be measured (or examination
Piece) surface.Electrochemistry noise test is carried out using the detection means with zero resistance circuit, respectively obtains electrochemical potentials noise
And current noise.The ratio between current potential noise standard deviation and current noise standard deviation are noise resistance, and noise resistance value is bigger,
The corrosion resistance of ferrous materials is better.
The corrosion monitoring and detecting of steel component under the city atmospheric environment of example 2.：As different from Example 2, reference electrode 2 is
High-purity antimony electrode, it is platinum plating Ti electrode to electrode 1.
Claims (3)
1. a kind of steel component or test piece atmospheric corrosion detection method, used sensor includes being used for the branch for supporting sensor
Dagger, reference electrode
(2) the working electrode electrical contact leads (5) that, are directly contacted to electrode (1), with steel component to be measured or strip, modeling
Expect net (3) and magnet (4), it is characterised in that be fixed with magnet (4) in the lower end of support column, reference electrode (2) and to electrode
(1) isolated between lower end and steel component to be measured or strip by plastic wire (3), step is as follows：
(1) plastic wire (3) first is placed in tested steel component or strip, sensor is then placed thereon, adjust reference
Electrode (2) and to the distance between electrode (1) and plastic wire (3), makes two described electrodes compress plastic wire (3)；
(2) working electrode electrical contact leads (5) are placed in sensor proximity, the wire in lead (5) connects with steel surface to be measured
Logical, outside is adsorbed in steel component to be measured or strip by magnet (4)；
(3) by reference electrode (2) and to electrode (1) and working electrode electrical contact leads (5) and the detection with zero resistance circuit
Device is connected, and carries out electrochemistry noise test.
2. detection method according to claim 1, it is characterised in that to steel component under naval air environment or test piece
Corrosion monitoring, the reference electrode used (2) are platinum plating Ti electrode to electrode (1) for high-purity zinc electrode.
3. detection method according to claim 1, it is characterised in that the corrosion to steel component under city atmospheric environment is examined
Survey, the reference electrode (2) used is platinum plating Ti electrode to electrode (1) for high-purity antimony electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510897372.3A CN105424590B (en) | 2015-12-07 | 2015-12-07 | The sensor and detection method detected for steel component or test piece atmospheric corrosion |
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| CN201510897372.3A CN105424590B (en) | 2015-12-07 | 2015-12-07 | The sensor and detection method detected for steel component or test piece atmospheric corrosion |
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| CN105424590A CN105424590A (en) | 2016-03-23 |
| CN105424590B true CN105424590B (en) | 2018-01-19 |
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| CN106596388A (en) * | 2017-01-04 | 2017-04-26 | 天津大学 | Electrochemical sensor for atmospheric corrosion detection of non-magnetic metal material |
| CN107202755A (en) * | 2017-06-05 | 2017-09-26 | 天津大学 | A kind of electrochemistry noise sensor of metallic conduit outer surface Corrosion monitoring |
| CN107121382A (en) * | 2017-06-05 | 2017-09-01 | 天津大学 | It is a kind of to be used for the electrochemical sensor and detection method of waves splash about area's Corrosion monitoring |
| CN107462616A (en) * | 2017-07-13 | 2017-12-12 | 天津大学 | Suitable for the sensor of nuclear power high ambient temperature water under high pressure environment electrochemistry noise measurement |
| CN107449727B (en) * | 2017-07-28 | 2020-07-10 | 浙江钱浪智能信息科技有限公司 | Method for continuously monitoring field environment corrosivity by using corrosion sensor |
| GB2568702B (en) * | 2017-11-23 | 2019-11-20 | Bournemouth Univ Higher Education Corporation | Corrosion measurement device |
| CN112964629B (en) * | 2021-02-24 | 2022-08-02 | 江苏师范大学 | Metal structure corrosion monitoring device |
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