CN1475791A - Metal corrosion-resisting testing device - Google Patents
Metal corrosion-resisting testing device Download PDFInfo
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- CN1475791A CN1475791A CNA02125771XA CN02125771A CN1475791A CN 1475791 A CN1475791 A CN 1475791A CN A02125771X A CNA02125771X A CN A02125771XA CN 02125771 A CN02125771 A CN 02125771A CN 1475791 A CN1475791 A CN 1475791A
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Abstract
An equipment for testing the corrosion resistance of metal by the variation of potential difference between metals is composed of a container of electrolyte solution (saline), DC power supply, aluminium plate as speciment to be tested and partly immersed in the electrolyte solution, and reference copper electrode immersed in said electrolyte solution. When a DC voltage is applied, an ion flow is shown by current meter and accumulated by accumulator to measure the corroded level of aluminium plate.
Description
Technical field
The present invention relates to a kind of metal corrosion-resisting test and decide device; particularly the metal surface form diaphragm with counter electrode in the NaCl electrolyte solution; the conduction that detects electrolyte solution when adding DC voltage changes, and can measure the proving installation of metal erosion degree.
Background technology
Metal has good advantage aspect intensity and the processing characteristics; therefore be used on mechanical part and the electronic unit more; but the low shortcoming of corrosion resistance is arranged also; therefore many researchists research of studying corrosion-resistant metal and covering the corrosion-resistant diaphragm of one deck in its surface; but for the corrosion resistance measurement that forms diaphragm on the corrosion-resistant metal surface; the main employing on the brine spray device of spray 5% salt solution on the experiment slice; the long-term method that the metal surface changes of observing of placing; utilize the corrosion-resistant method of testing of brine spray device; the extent of corrosion that can't represent experiment slice with numerical value; and user's difference; its deviation is also bigger, and is difficult to judge quality for the similar experiment slice of corrosivity.In order to remedy this problem, perhaps utilize DC potentiometer or utilize the addition AC signal and electrochemical impedance spectrum that the frequency response signal that obtains is judged, be applied to judge in the quantitative evaluation of corrosion resistance, but the equipment investment height, but also need certain professional knowledge.Particularly, be installed in the heat exchanger in the household appliances such as air-conditioning or refrigerator, heat release pin and refrigerant pipe are in contact with one another, the material of heat release pin mainly is that the main material of aluminium (Al) refrigerant pipe is copper (Cu), therefore, owing to the potential difference (PD) between two kinds of metals causes the potential difference (PD) corrosion, and the prediction of extent of corrosion and evaluation method also do not have.
Summary of the invention
In order to address the above problem, the objective of the invention is to, provide a kind of utilization to detect the extent of corrosion that the metal potential difference (PD) produces quantitatively, convenient, fast, the metal corrosion-resisting testing device of quantification, thus contribute for anticorrosion exploitation, another object of the present invention also is, utilizes simple equipment to come quantitative detection corrosion of metal journey.
In order to achieve the above object, metal corrosion-resisting testing device of the present invention comprises that inside puts into electrolyte solution, container with a certain size, and DC power supply is installed, a part immerses the mensuration corrosion test piece in the container, keep certain distance with the mensuration corrosion with test piece, a part is immersed in the counter electrode in the container, corrosion be will measure and anode and negative electrode connected into test piece and counter electrode, when giving DC voltage, measure corrosion and move, can be presented on the galvanometer of the anode of DC power supply and cathodic electricity flow with forming ion between test piece and the counter electrode, and the formation metal corrosion-resisting testing device that links to each other with the electric current totalizer.Its electrolyte solution is 5% salt solution (NaCl), and its test corrosion is aluminium (Al) with test piece, and counter electrode is copper (Cu), and the benchmark copper electrode that is connected in aluminium connects by kapillary, and the generation ion moves between the aluminium test piece, is used for setting reference potential.
The invention has the beneficial effects as follows, adopt the metal corrosion-resisting measurement mechanism, in having the electrolyte solution of electric conductivity, immerse metal material and counter electrode, and metal material and electrode be connected on the anode of power supply unit and the negative electrode give certain voltage, and utilize the electric current totalizer accumulative total magnitude of current, utilize intermetallic potential difference (PD) to change, thereby can measure the corrosion of metal degree simply, quantitatively.
Description of drawings
Fig. 1 briefly forms synoptic diagram for the anti-metal corrosion-resisting testing device of the present invention
Fig. 2 is electric current accumulation amount of the present invention and mass change relation curve synoptic diagram.
The explanation of the critical piece symbol in the accompanying drawing.100:5% salt solution 101: container 102: aluminium 103: copper 104: DC power supply 105: galvanometer 106: electric current totalizer 107: benchmark copper electrode 108: kapillary
Embodiment
Below in conjunction with accompanying drawing and specific embodiments,, be described in more details metal corrosion-resisting testing device of the present invention.
As shown in the figure, the metal corrosion-resisting testing device of the present invention design has immersed the aluminium 102 and the counter electrode copper 103 of test etching extent in container 101 inside that are soaked with 5% salt solution (NaCl) 100, and aluminium 102 and copper 103 utilize DC power supply 104 to connect into anode (+) and negative electrode (-), when adding direct supply, have moving of ion between aluminium 102 and the copper 103, and, link to each other with electric current totalizer 106 at the galvanometer 105 that has connected current change between demonstration anode and the negative electrode on the DC power supply 104, simultaneously, in order to set reference potential, aluminium test piece 102 links to each other with benchmark copper electrode 107, be communicated in the container 101 through kapillary 108, make between benchmark copper electrode 107 and the aluminium test piece 102 and to produce ion and move, between aluminium 102 and copper 103, flow through electric current by salt solution 100 when when DC power supply 104 provides direct supply for aluminium 102 and copper 103, voltage being maintained 700mmv, and this electric current can appear on the galvanometer 105, and be added on the electric current totalizer 106, utilize the potential difference (PD) of aluminium and copper, measure the etching extent of aluminium 102.
Among Fig. 2 with the aluminium of naked state and for corrosion-resistant and surface treated sample (A, B, C.....F), the corrosion resistance proving installation that utilizes the present invention to design, tested the cumulative amount of each electric current, and be illustrated on the upside curve, and each mass change has been illustrated on the downside curve.Hence one can see that, depress in same electrical, the magnitude of current that flows through on the A sample of naked state is big, and mass change is also big, though and few through electric current accumulation amount in the b sample of corrosion-resistant surface processing, mass change is also very little. promptly, because the amount of metal that is corroded that potential difference (PD) causes has identical tendency with the electric current accumulation amount that utilizes the corrosion-resistant proving installation of the present invention, therefore, the magnitude of current that can add up and flow through between experiment slice and the counter electrode is measured the corrosion of metal degree.
Claims (4)
1. metal corrosion-resisting testing device, it is characterized in that comprising that inside puts into electrolyte solution, container (101) with a certain size, and DC power supply (104) is installed, a part immerses the mensuration corrosion test piece in the container, keep certain distance with the mensuration corrosion with test piece, a part is immersed in the counter electrode in the container, corrosion be will measure and anode and negative electrode connected into test piece and counter electrode, when giving DC voltage, measuring corrosion moves with forming ion between test piece and the counter electrode, can be presented on the galvanometer (105) of the anode of DC power supply and cathodic electricity flow, and link to each other with electric current totalizer (106) and to constitute metal corrosion-resisting testing device.
2. metal corrosion-resisting testing device according to claim 1 is characterized in that electrolyte solution is 5% salt solution (100).
3. metal corrosion-resisting testing device according to claim 1 it is characterized in that the test corrosion is aluminium (102) with test piece, and counter electrode is copper (103).
4. metal corrosion-resisting testing device according to claim 3 it is characterized in that the benchmark copper electrode (107) that is connected in aluminium connects by kapillary (108), and the generation ion moves between the aluminium test piece (102), is used for setting reference potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125771 CN1198131C (en) | 2002-08-19 | 2002-08-19 | Metal corrosion-resisting testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125771 CN1198131C (en) | 2002-08-19 | 2002-08-19 | Metal corrosion-resisting testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1475791A true CN1475791A (en) | 2004-02-18 |
| CN1198131C CN1198131C (en) | 2005-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02125771 Expired - Fee Related CN1198131C (en) | 2002-08-19 | 2002-08-19 | Metal corrosion-resisting testing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN1198131C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437084C (en) * | 2005-04-30 | 2008-11-26 | 华为技术有限公司 | Method for quantizing ionic pollution degree on circuit board |
| CN101118203B (en) * | 2007-08-24 | 2010-04-14 | 武汉理工大学 | Test method of sample destroy time in tube of glass fibre reinforced plastic long-term performance test |
| CN101846615A (en) * | 2010-05-17 | 2010-09-29 | 许丽涛 | Device and method for monitoring corrosion of buried steel pipelines |
| CN101566555B (en) * | 2009-04-29 | 2011-07-20 | 中国科学院金属研究所 | High-precision immersed-salt hot corrosion test method |
| CN102692372A (en) * | 2011-03-22 | 2012-09-26 | 精工爱普生株式会社 | Sensor device |
| CN103460019A (en) * | 2011-04-12 | 2013-12-18 | 杰富意钢铁株式会社 | Method for evaluating corrosion resistance of molded can against content |
| CN104655550A (en) * | 2015-02-13 | 2015-05-27 | 华南理工大学 | Method for detecting corrosion resistance of metal plastic composite material |
| CN105527550A (en) * | 2015-12-12 | 2016-04-27 | 北京化工大学 | Method for monitoring insulating state of dissimilar metal in conductive solution |
| CN107941686A (en) * | 2017-11-15 | 2018-04-20 | 清华大学 | Study the test simulation platform of iron pipe electrochemical corrosion and ductwork water quality change |
| CN108362636A (en) * | 2017-12-29 | 2018-08-03 | 上海神力科技有限公司 | A kind of bipolar plate for fuel cell corrosion resistance test method |
| CN111458287A (en) * | 2019-01-18 | 2020-07-28 | 马自达汽车株式会社 | Corrosion resistance test device for cladding metal material |
| CN114112876A (en) * | 2020-06-22 | 2022-03-01 | 马自达汽车株式会社 | Measuring method and measuring apparatus, and corrosion resistance testing method and apparatus |
-
2002
- 2002-08-19 CN CN 02125771 patent/CN1198131C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437084C (en) * | 2005-04-30 | 2008-11-26 | 华为技术有限公司 | Method for quantizing ionic pollution degree on circuit board |
| CN101118203B (en) * | 2007-08-24 | 2010-04-14 | 武汉理工大学 | Test method of sample destroy time in tube of glass fibre reinforced plastic long-term performance test |
| CN101566555B (en) * | 2009-04-29 | 2011-07-20 | 中国科学院金属研究所 | High-precision immersed-salt hot corrosion test method |
| CN101846615A (en) * | 2010-05-17 | 2010-09-29 | 许丽涛 | Device and method for monitoring corrosion of buried steel pipelines |
| CN102692372A (en) * | 2011-03-22 | 2012-09-26 | 精工爱普生株式会社 | Sensor device |
| CN103460019A (en) * | 2011-04-12 | 2013-12-18 | 杰富意钢铁株式会社 | Method for evaluating corrosion resistance of molded can against content |
| CN104655550B (en) * | 2015-02-13 | 2018-01-05 | 华南理工大学 | A kind of corrosion resistance detection method of plastimets |
| CN104655550A (en) * | 2015-02-13 | 2015-05-27 | 华南理工大学 | Method for detecting corrosion resistance of metal plastic composite material |
| CN105527550A (en) * | 2015-12-12 | 2016-04-27 | 北京化工大学 | Method for monitoring insulating state of dissimilar metal in conductive solution |
| CN105527550B (en) * | 2015-12-12 | 2018-04-13 | 中国船舶重工集团公司第七一〇研究所 | A kind of method for supervising detection dissimilar metal state of insulation in conducting solution |
| CN107941686A (en) * | 2017-11-15 | 2018-04-20 | 清华大学 | Study the test simulation platform of iron pipe electrochemical corrosion and ductwork water quality change |
| CN107941686B (en) * | 2017-11-15 | 2020-06-23 | 清华大学 | Test simulation platform for researching electrochemical corrosion of iron pipeline and water quality change of pipe network |
| CN108362636A (en) * | 2017-12-29 | 2018-08-03 | 上海神力科技有限公司 | A kind of bipolar plate for fuel cell corrosion resistance test method |
| CN111458287A (en) * | 2019-01-18 | 2020-07-28 | 马自达汽车株式会社 | Corrosion resistance test device for cladding metal material |
| CN114112876A (en) * | 2020-06-22 | 2022-03-01 | 马自达汽车株式会社 | Measuring method and measuring apparatus, and corrosion resistance testing method and apparatus |
| CN114112876B (en) * | 2020-06-22 | 2024-06-04 | 马自达汽车株式会社 | Measuring method and measuring device, and corrosion resistance test method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1198131C (en) | 2005-04-20 |
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