CN105424590A - Sensor and detection method for atmosphere corrosion detection of steel member or test piece - Google Patents
Sensor and detection method for atmosphere corrosion detection of steel member or test piece Download PDFInfo
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- CN105424590A CN105424590A CN201510897372.3A CN201510897372A CN105424590A CN 105424590 A CN105424590 A CN 105424590A CN 201510897372 A CN201510897372 A CN 201510897372A CN 105424590 A CN105424590 A CN 105424590A
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Abstract
The invention relates to a sensor for atmosphere corrosion detection of a steel member or a test piece. The sensor comprises a supporting column for supporting the sensor, a reference electrode (2), a counter electrode (1), a working electrode electric contact lead wire (5) which is in direct contact with the surface of the steel member or test piece to be detected, a plastic net (3) and a magnet (4), and is characterized in that the magnet (4) is fixed at the lower end of the supporting column; and the lower ends of the reference electrode (2) and the reference electrode (2) are separated from the surface of the steel member or test piece to be detected through the plastic net (3). The invention also provides a method for detecting the atmosphere corrosion detection of the steel member or the test piece by adopting the sensor. With the adoption of the sensor and the method, the on-site corrosion detection of the large-size steel member or test piece can be realized in real time; and an adopted electrochemical noise technology has no interferences on a detected system and belongs to nondestructive testing.
Description
Technical field
The present invention relates to the atmospheric corrosion electrochemistry noise detecting sensor that one is applicable to steel component (or test piece), belong to corrosion electrochemistry field.
Background technology
The involutory reason of atmospheric corrosion performance how evaluating ferrous materials selects have important directive significance the serviceable life of ferrous materials and evaluation component thereof.Although traditional weightless test method can evaluate the atmospheric corrosion resistance of ferrous materials, the real-time measurement of atmospheric corrosion can not be realized, and more time-consuming.Due to the galvanic corrosion be in the nature under thin liquid film of atmospheric corrosion, therefore electrochemical techniques evaluate ferrous materials corrosion resisting property and the most effective means of research corrosion mechanism.In recent years, electrochemical noise technique starts the atmospheric corrosion process for Study on Steel iron material.Electrochemistry noise (electrochemicalnoise) technology has the harmless feature of original position, without the need to being applied with the external disturbance that may change corroding electrode process to tested electrode in measuring process, without the need to setting up the electrode process model of tested systems in advance, and the remote monitoring of ferrous materials corrosion type and extent of corrosion can be realized.But design corrosion electrochemistry sensor, there is not been reported to adopt electrochemical noise technique to corrode on-the-spot prison detection to steel component (or test piece).Patent of the present invention is by a kind of corrosion electrochemistry sensor of design, electrochemical noise technique is utilized to study the atmospheric corrosion process of steel component (or test piece), these means are noiseless to tested systems, easy to operate, can realize detecting the long-term corrosion prison of ferrous materials.
Summary of the invention
The object of the invention is to the deficiency overcoming existing atmospheric corrosion detection technique, a kind of electrochemical sensor of on-line checkingi ferrous materials atmospheric corrosion is provided, and based on this kind of sensor, provide a kind of ferrous materials corrosion detecting method.Study corrosion process by electrochemical noise technique, thus judge the corrosion stability of ferrous materials.
Object of the present invention is achieved by following technical proposals.
A kind of sensor detected for steel component or test piece atmospheric corrosion, comprise the support column for supporting sensor, contrast electrode (2), to electrode (1), the working electrode electrical contact leads (5), plastic wire (3) and the magnet (4) that directly contact with steel component to be measured or strip, it is characterized in that, magnet (4) is fixed with, contrast electrode (2) and being isolated by plastic wire (3) between the lower end of electrode (1) and steel component to be measured or strip in the lower end of support column.
To the Corrosion monitoring of steel component under naval air environment or test piece, the contrast electrode (2) of employing is high purity zinc electrode, is platinized titanium electrode to electrode (1).To the Corrosion monitoring of steel component under city atmospheric environment, the contrast electrode (2) of employing is high purity antimony electrode, is platinized titanium electrode to electrode (1).
The present invention provides a kind of steel component or the test piece atmospheric corrosion detection method that adopt above-mentioned sensor realization simultaneously, comprises following step:
(1) first plastic wire (3) is placed at tested steel component or strip, then sensor is placed thereon, regulate contrast electrode (2) and to the distance between electrode (1) and plastic wire (3), make two described electrodes compress plastic wire (3);
(2) working electrode electrical contact leads (5) is placed in sensor proximity, the wire in lead-in wire (5) is communicated with steel surface to be measured, and outside is adsorbed on steel component to be measured or strip by magnet (4);
(3) contrast electrode (2) is connected with the pick-up unit with zero resistance circuit with to electrode (1) and working electrode electrical contact leads (5), carries out electrochemistry noise test.
Compared with prior art, the beneficial effect of patent of the present invention is: can realize detecting the on-the-spot real-time corrosion prison of large-scale steel component (or test piece), adopt electrochemical noise technique noiseless to tested systems, belong to Non-Destructive Testing.
Accompanying drawing explanation
Schematic diagram when Fig. 1 is the work of atmospheric corrosion electrochemistry noise detecting sensor.
Description of reference numerals is as follows: 1 pair of electrode; 2 contrast electrodes; 3 plastic wires; 4 magnet; 5 working electrode electrical contact leads
Embodiment
One is applicable to the atmospheric corrosion electrochemistry noise detecting sensor of steel component (or test piece), carries out according to following step:
Fig. 1 is atmospheric corrosion electrochemistry noise detecting sensor operating diagram.Atmospheric corrosion electrochemistry noise detecting sensor mainly comprises two electrode-contrast electrodes 2 and to electrode 1 (selecting different contrast electrodes 2 according to test environment), the position of electrode distance test surfaces is adjustable.Sensor has three support pillars, and each pillar includes magnet 4, can be adsorbed on steel surface to be measured.
Working electrode electrical contact leads 5 directly with steel surface electric connection to be measured, Sensor Reference electrode 2 and put one deck plastic wire 3 between electrode 1 and steel surface to be measured.During test, adjustment contrast electrode 2 and the position to electrode 1, until compress plastic wire 3.Plastic wire thickness is 500 microns, vital role play two in atmospheric corrosion detects in: one is avoid sensor and steel surface Electricity Federation to be measured to lead to, on the other hand because plastic wire has reticulate texture and very thin thickness, the impact of solution resistance time mainly in order to reduce to test, is beneficial to electrochemistry noise test.Utilize this sensor can gather electrochemical potential noise signal and the current noise signal of ferrous materials corrosion process.Noise resistance value is utilized to evaluate the corrosion stability of ferrous materials.Below by specific embodiment, technical scheme of the present invention is further described.
The corrosion monitoring and detecting of steel component under example 1. naval air environment: contrast electrode 2 is high purity zinc electrode is platinized titanium electrode to electrode 1.A slice thickness about 500 microns is placed, the plastic wire 3 that diameter is about 2 centimetres on steel component (or test piece) to be detected surface.Place sensor, and pushed down by plastic wire 3, sensor is adsorbed on above steel samples to be measured by magnet 4.Adjustment contrast electrode 2 and the position to electrode 1, until two electrodes compress plastic wire 3.Working electrode electrical contact leads 5 is placed in sensor proximity, and the copper cash in lead-in wire 5 is communicated with steel surface to be measured, and outer magnet 4 is adsorbed on steel component to be measured (or test piece) surface.Utilize the pick-up unit with zero resistance circuit to carry out electrochemistry noise test, obtain electrochemical potential noise and current noise respectively.The ratio of current potential noise standard deviation and current noise standard deviation is noise resistance, and noise resistance value is larger, and the corrosion stability of ferrous materials is better.
The corrosion monitoring and detecting of steel component under example 2. city atmospheric environment: as different from Example 2, contrast electrode 2 is high purity antimony electrode, is platinized titanium electrode to electrode 1.
Claims (6)
1. for sensor that steel component or test piece atmospheric corrosion detect, comprise the support column for supporting sensor, contrast electrode (2), to electrode (1), the working electrode electrical contact leads (5), plastic wire (3) and the magnet (4) that directly contact with steel component to be measured or strip.It is characterized in that, be fixed with magnet (4) in the lower end of support column, contrast electrode (2) and being isolated by plastic wire (3) between the lower end of electrode (1) and steel component to be measured or strip.
2. sensor according to claim 1, is characterized in that, to the Corrosion monitoring of steel component under naval air environment or test piece, the contrast electrode (2) of employing is high purity zinc electrode, is platinized titanium electrode to electrode (1).
3. sensor according to claim 1, is characterized in that, to the Corrosion monitoring of steel component under city atmospheric environment, the contrast electrode (2) of employing is high purity antimony electrode, is platinized titanium electrode to electrode (1).
4. the steel component adopting sensor according to claim 1 to realize or a test piece atmospheric corrosion detection method, comprise following step:
(1) first plastic wire (3) is placed at tested steel component or strip, then sensor is placed thereon, regulate contrast electrode (2) and to the distance between electrode (1) and plastic wire (3), make two described electrodes compress plastic wire (3);
(2) working electrode electrical contact leads (5) is placed in sensor proximity, the wire in lead-in wire (5) is communicated with steel surface to be measured, and outside is adsorbed on steel component to be measured or strip by magnet (4);
(3) contrast electrode (2) is connected with the pick-up unit with zero resistance circuit with to electrode (1) and working electrode electrical contact leads (5), carries out electrochemistry noise test.
5. method of testing according to claim 1, is characterized in that, to the Corrosion monitoring of steel component under naval air environment or test piece, the contrast electrode (2) of employing is high purity zinc electrode, is platinized titanium electrode to electrode (1).
6. method of testing according to claim 1, is characterized in that, to the Corrosion monitoring of steel component under city atmospheric environment, the contrast electrode (2) of employing is high purity antimony electrode, is platinized titanium electrode to electrode (1).
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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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596388A (en) * | 2017-01-04 | 2017-04-26 | 天津大学 | Electrochemical sensor for atmospheric corrosion detection of non-magnetic metal material |
| 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 |
| 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 |
| CN107449727A (en) * | 2017-07-28 | 2017-12-08 | 北京科技大学 | One kind utilizes the corrosive method of corrosion sensor continuous monitoring wild environment |
| 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 |
| CN111788478A (en) * | 2017-11-23 | 2020-10-16 | 伯恩茅斯大学高等教育公司 | Corrosion measuring device |
| CN112964629A (en) * | 2021-02-24 | 2021-06-15 | 江苏师范大学 | Metal structure corrosion monitoring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596388A (en) * | 2017-01-04 | 2017-04-26 | 天津大学 | Electrochemical sensor for atmospheric corrosion detection of non-magnetic metal material |
| 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 |
| 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 |
| 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 |
| CN107449727A (en) * | 2017-07-28 | 2017-12-08 | 北京科技大学 | One kind utilizes the corrosive method of corrosion sensor continuous monitoring wild environment |
| CN111788478A (en) * | 2017-11-23 | 2020-10-16 | 伯恩茅斯大学高等教育公司 | Corrosion measuring device |
| CN111788478B (en) * | 2017-11-23 | 2023-08-01 | 伯恩茅斯大学高等教育公司 | Corrosion measuring device |
| CN112964629A (en) * | 2021-02-24 | 2021-06-15 | 江苏师范大学 | Metal structure corrosion monitoring device |
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Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
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Granted publication date: 20180119 Termination date: 20181207 |