CN102313690A - Rotating disk electrode method for quantitative testing of porosity of tinned steel plate - Google Patents
Rotating disk electrode method for quantitative testing of porosity of tinned steel plate Download PDFInfo
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Abstract
The invention relates to a rotating disk electrode method for quantitative testing of porosity of a tinned steel plate, which comprises the following steps: (1) drawing of a standard straight line: preparing standard solution with different iron ion contents, transferring the standard solution to a three-electrode system with rotating disc electrodes with the rotating speed alpha being 500-2000r/min, linearly scanning the cathode potential of the standard solution, and carrying out linear fitting of the current density under the potential beta, wherein beta is ranged from minus 0.45 to minus 0.10V; (2) packaging of a test piece: fixing the test pipe at the opening of a wild-mouth bottle filled with corrosive solution, and making the wild-mouth bottle inverted; (3) linear scanning of the cathode potential: transferring the corrosive solution in (2) into the three-electrode system with the rotating disc electrodes, and determining the current density at the potential beta; and (4) data processing. The invention has the advantages that the operation is easy, the use cost is low, and changes in the porosity of the tinned steel plate can be tested promptly, rapidly and accurately.
Description
Technical field
The present invention relates to the tin plate sheet surface detection technique, relate in particular to a kind of electrochemical method of testing the tin plate porosity.
Background technology
Ferrostan is meant that the two sides is coated with the cold rolling zero carbon steel or the steel band of pure tin.It is incorporated into the intensity of steel and mouldability among a kind of material with corrosion stability, tin-welding and the aesthetic property of tin.Because characteristics such as tin are nontoxic, ductility good, corrosion stability is good, ferrostan has obtained widespread use on industries such as food industry, carrier loader, electron device.
The tin plate structure of handling through soft heat is broadly divided into three layers: steel matrix, Fe-Sn alloy-layer and tin layer, and ideal tin layer is densification and atresia, and in fact tin coating always exists pin hole.Pin hole divides two types, one type for reach the iron layer pin hole, another kind of be the pin hole that reaches the tin iron alloy layer.Tin plate in use, there is " current potential counter-rotating " phenomenon in the tin layer under organic acid and oxygen free condition, tin is anodic coating with respect to iron, the tin layer is corroded, iron is protected.When the amount of pin hole and area reach certain value when above, the tin layer is dissolving rapidly just.In the WS, tin coating but is a cathodic electrodeposition coating with respect to iron, and this moment, iron was corroded.And in system jar process, when having hole on the tin layer, the corrosion that the tin layer will be accelerated substrate produces the some rust, greatly reduces the corrosion stability of tin plate.In addition, along with the rising of metallic tin price and from practicing thrift the angle of metals resources, the tin coating forward slimming development of tin plate.Yet tin plate slimming result of development has also increased it, and possibility of spot corrosion takes place, and therefore the life-span of jar has also received and having seriously influenced.
The method of the porosity of existing test tin plate mainly is to analyze the iron solution value of tin plate through AAS, and the size of iron solution value has characterized the size of the porosity of tin plate.Existing sample of the every detection of AAS approximately needs 1 hour, and there is certain hysteresis quality in the detection of tin plate porosity, can not instruct the adjustment of production technology timely.
Summary of the invention
The object of the present invention is to provide a kind of rotating disk electrode (r.d.e) method of quantitative test tin plate porosity; This method can shorten the time that detection tin plate porosity is spent, and can instruct the adjustment of production technology timely, in addition; This method is simple to operate, measures accurately.
The present invention is achieved in that a kind of rotating disk electrode (r.d.e) method of quantitative test tin plate porosity, and this method comprises the steps:
The drafting of step 1, standard straight-line: at first prepare the corrosive liquid that evenly mixes by dilute sulfuric acid, hydrogen peroxide and distilled water; With the corrosive liquid break into portions, in every part of corrosive liquid, add the iron sulfate of different quality then, process the standard solution of different iron ion contents; Standard solution is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed; Connect electrochemical workstation, the rotating speed of setting rotating disk electrode (r.d.e) is α, and α is 500～2000r/min; Through using rotating disk electrode (r.d.e) standard solution is carried out cathode potential linear sweep; The current density value of standard solution under the β current potential of different iron concentrations being carried out fitting a straight line, obtain the straight-line equation of standard straight-line and this standard straight-line, β is-0.45～-0.10V;
The encapsulation of step 2, test pieces: tin plate to be measured is cut out a slice test pieces, then test pieces is fixed in the bottle mouth position and the sealing of the wide-necked bottle that corrosive liquid is housed, subsequently wide-necked bottle is inverted, the inversion time is 5～30min;
Step 3, cathode potential linear sweep: open wide-necked bottle; Solution in the wide-necked bottle is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed; Connect electrochemical workstation; The rotating speed of setting rotating disk electrode (r.d.e) is α, through using rotating disk electrode (r.d.e) solution is carried out cathode potential linear sweep, confirms the current density value at β current potential place;
Step 4, data: with the standard straight-line equation that obtains in the current density value substitution step 1 that records in the step 3; Obtain iron concentration in the solution
; Obtain the iron solution value of test pieces according to formula [1]
In the formula:
is the iron solution value of test pieces;
Contain mass percentage concentration in the described corrosive liquid and be dilute sulfuric acid 18～26mL of 10～15%, mass percentage concentration is hydrogen peroxide 1～3mL of 30～36%, distilled water 20～30mL; Dilute sulfuric acid is slowly joined in the solution of being made up of hydrogen peroxide and distilled water, mix and be mixed with corrosive liquid.
Corrosive liquid is divided into 5 parts, adds iron sulfate 5 parts of corrosive liquids are processed the standard solution that iron concentration is respectively 20mg/L, 40mg/L, 60mg/L, 80mg/L and 100mg/L.
Said test pieces is circular, and the area of test pieces is 20～40cm
2
The present invention utilizes the characteristics of place, tin plate surface pore and corrosive liquid reaction meeting stripping ferric ion, combined with electrochemical analytical approach, the porosity of mensuration tin plate.The present invention tests in the tin plate porosity process and need not corrosive liquid is diluted, and has effectively avoided in using the AAS process because iron ion content is too high, must dilute and the error brought corrosive liquid.The present invention is simple to operate, and use cost is low, and test result can directly show the height of tin plate porosity, is fit to very much on-the-spot fast detecting, can test out the variation of tin plate porosity real-time accurately.
Description of drawings
Fig. 1 is the current density fitting a straight line of the standard solution of different iron ion contents among the embodiment 1 at-0.45V current potential place;
Fig. 2 is the current density fitting a straight line of the standard solution of different iron ion contents among the embodiment 2 at-0.30V current potential place;
Fig. 3 is the current density fitting a straight line of the standard solution of different iron ion contents among the embodiment 3 at-0.10V current potential place.
Among the figure:---■---measures curve,---standard straight-line.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
Embodiment 1
A kind of rotating disk electrode (r.d.e) method of quantitative test tin plate porosity, this method comprises the steps:
The drafting of step 1, standard straight-line: at first get mass percentage concentration and be 10% dilute sulfuric acid 18mL, mass percentage concentration is 30% hydrogen peroxide 1mL, distilled water 20mL; Dilute sulfuric acid is slowly joined in the solution of being made up of hydrogen peroxide and distilled water, mix and be mixed with corrosive liquid.Corrosive liquid is divided into 5 parts; Add iron sulfate 5 parts of corrosive liquids are processed the standard solution that iron concentration is respectively 20mg/L, 40mg/L, 60mg/L, 80mg/L and 100mg/L, standard solution is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed, connect electrochemical workstation; Said three-electrode system and electrochemical workstation are prior art; The rotating speed of setting rotating disk electrode (r.d.e) is α, and α is 2000r/min, through using rotating disk electrode (r.d.e) standard solution is carried out cathode potential linear sweep; 5 parts of standard solution that obtain different iron concentrations equal at β-current density value under the 0.45V current potential, and referring to table 1.
The current density value of 5 parts of standard solution of the different iron concentrations of table 1 under-0.45V current potential
| Iron concentration (mg/L) | 20 | 40 | 60 | 80 | 100 |
| Current density (mA/cm 2) | 0.0517 | 0.0853 | 0.1064 | 0.1339 | 0.1740 |
5 parts of standard solution of different iron concentrations are carried out fitting a straight line at the current density value the under-0.45V current potential, obtain standard straight-line, referring to shown in Figure 1, the standard straight-line equation is:
In the formula,
is iron concentration value (mg/L);
Step 2, zinc-plated encapsulation: freshly prepd No. 1 tin plate sample and No. 2 tin plate samples are cut out a slice test pieces respectively, and said test pieces is circular, and the area of test pieces is 20cm
2, then 2 test pieces being fixed in 2 bottle mouth positions that the wide-necked bottle of 39ml corrosive liquid is housed, the corrosive liquid composition is identical in the composition of this corrosive liquid and the step 1, seals with rubber cushion and bottle cap, subsequently wide-necked bottle is inverted, and the inversion time is 30min;
Step 3, negative electrode linear sweep: open wide-necked bottle; Solution in the wide-necked bottle is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed; Connect electrochemical workstation; The setting rotating speed is 2000r/min, through using rotating disk electrode (r.d.e) solution is carried out cathode potential linear sweep, confirms the current density value at-0.45V current potential place.
Step 4, data processing: with the standard straight-line equation that obtains in the current density value substitution step 1 that records in the step 3:
Obtain iron concentration in the solution
; Obtain the iron solution value of test pieces again according to formula [1]
In the formula:
is the iron solution value of test pieces;
According to the method for step 1 to step 4 in the present embodiment, the test result of No. 1 and No. 2 test pieces and prior art AAS iron solution value are as shown in table 2.
The rotating disk electrode (r.d.e) method is analyzed iron solution value result and prior art AAS iron solution value among table 2 embodiment 1
| Sample | Current density (mA/cm 2) | Iron concentration (mg/L) | Iron solution value (g/m 2) | AAS iron solution value (g/m 2) |
| No. 1 | 0.1658 | 97.62 | 1.9036 | 1.9704 |
| No. 2 | 0.1573 | 91.84 | 1.7909 | 1.8570 |
Can find out from table 2 test result; The iron solution value that uses the analysis of rotating disk electrode (r.d.e) method to obtain is very little with the numerical value difference of using AAS to obtain; Degree of accuracy is higher; And the very wide 10～100mg/L of ferric ion test concentrations of the present invention, can avoid in the AAS because the error that the corrosive liquid dilution brings.
Embodiment 2
A kind of rotating disk electrode (r.d.e) method of quantitative test tin plate porosity, this method comprises the steps:
The drafting of step 1, standard straight-line: at first get mass percentage concentration and be 12% dilute sulfuric acid 22mL, mass percentage concentration is 33% hydrogen peroxide 2mL, distilled water 25mL; Dilute sulfuric acid is slowly joined in the solution of being made up of hydrogen peroxide and distilled water, mix and be mixed with corrosive liquid.Corrosive liquid is divided into 5 parts; Add iron sulfate 5 parts of corrosive liquids are processed the standard solution that iron concentration is respectively 20mg/L, 40mg/L, 60mg/L, 80mg/L and 100mg/L, standard solution is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed, connect electrochemical workstation; Said three-electrode system and electrochemical workstation are prior art; The rotating speed of setting rotating disk electrode (r.d.e) is α, and α is 1200r/min, through using rotating disk electrode (r.d.e) standard solution is carried out cathode potential linear sweep; 5 parts of standard solution that obtain different iron concentrations equal at β-current density value under the 0.30V current potential, and referring to table 3.
The current density value of 5 parts of standard solution of the different iron concentrations of table 3 under-0.30V current potential
| Iron concentration (mg/L) | 20 | 40 | 60 | 80 | 100 |
| Current density (mA/cm 2) | 0.0392 | 0.0668 | 0.0898 | 0.1094 | 0.1450 |
5 parts of standard solution of different iron concentrations are carried out fitting a straight line at the current density value the under-0.30V current potential, obtain standard straight-line, referring to shown in Figure 2, the standard straight-line equation is:
In the formula,
is iron concentration value (mg/L);
Step 2, zinc-plated encapsulation: freshly prepd No. 3 tin plate samples and No. 4 tin plate samples are cut out a slice test pieces respectively, and said test pieces is circular, and the area of test pieces is 30cm
2, then 2 test pieces being fixed in 2 bottle mouth positions that the special wide-necked bottle of 49ml corrosive liquid is housed, the corrosive liquid composition is identical in the composition of this corrosive liquid and the step 1, seals with rubber cushion and bottle cap, subsequently wide-necked bottle is inverted, and the inversion time is 20min;
Step 3, negative electrode linear sweep: open wide-necked bottle; Solution in the wide-necked bottle is transferred in the three-electrode system; Connect electrochemical workstation; The rotating speed of setting rotating disk electrode (r.d.e) is 1200r/min, through using rotating disk electrode (r.d.e) solution is carried out negative electrode linear sweep, confirms the current density value at-0.30V current potential place.
Step 4, data processing: with the standard straight-line equation that obtains in the current density value substitution step 1 that records in the step 3:
Obtain iron concentration in the solution
; Obtain the iron solution value of test pieces again according to formula [1]
In the formula:
is the iron solution value of test pieces;
According to the method for step 1 to step 4 in the present embodiment, the test result of No. 3 and No. 4 test pieces and prior art AAS iron solution value are as shown in table 4.
The rotating disk electrode (r.d.e) method is analyzed iron solution value result and prior art AAS iron solution value among table 4 embodiment 2
| Sample | Current density (mA/cm 2) | Iron concentration (mg/L) | Iron solution value (g/m 2) | AAS iron solution value (g/m 2) |
| No. 3 | 2.75E-02 | 10.65 | 0.1740 | 0.1801 |
| No. 4 | 3.51E-02 | 16.64 | 0.2718 | 0.2793 |
Can find out from table 4 test result; The iron solution value that uses the analysis of rotating disk electrode (r.d.e) method to obtain is very little with the numerical value difference of using AAS to obtain; Degree of accuracy is higher; And the very wide 10～100mg/L of ferric ion test concentrations of the present invention, can avoid in the AAS because the error that the corrosive liquid dilution brings.
Embodiment 3
A kind of rotating disk electrode (r.d.e) method of quantitative test tin plate porosity, this method comprises the steps:
The drafting of step 1, standard straight-line: at first get mass percentage concentration and be 15% dilute sulfuric acid 26mL, mass percentage concentration is 36% hydrogen peroxide 3mL, distilled water 30mL; Dilute sulfuric acid is slowly joined in the solution of being made up of hydrogen peroxide and distilled water, mix and be mixed with corrosive liquid.Corrosive liquid is divided into 5 parts; Add iron sulfate 5 parts of corrosive liquids are processed the standard solution that iron concentration is respectively 20mg/L, 40mg/L, 60mg/L, 80mg/L and 100mg/L, standard solution is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed, connect electrochemical workstation; Said three-electrode system and electrochemical workstation are prior art; The rotating speed of setting rotating disk electrode (r.d.e) is α, and α is 500r/min, through using rotating disk electrode (r.d.e) standard solution is carried out cathode potential linear sweep; 5 parts of standard solution that obtain different iron concentrations equal at β-current density value under the 0.10V current potential, and referring to table 5.
The current density value of 5 parts of standard solution of the different iron concentrations of table 5 under-0.10V current potential
| Iron concentration (mg/L) | 20 | 40 | 60 | 80 | 100 |
| Current density (mA/cm 2) | 0.0278 | 0.0471 | 0.0649 | 0.0755 | 0.0952 |
5 parts of standard solution of different iron concentrations are carried out fitting a straight line at the current density value the under-0.10V current potential, obtain standard straight-line, referring to shown in Figure 3, the standard straight-line equation is:
In the formula,
is iron concentration value (mg/L);
Step 2, zinc-plated encapsulation: freshly prepd No. 5 tin plate samples and No. 6 tin plate samples are cut out a slice test pieces respectively, and said test pieces is circular, and the area of test pieces is 40cm
2, then 2 test pieces being fixed in 2 bottle mouth positions that the special wide-necked bottle of 59ml corrosive liquid is housed, the corrosive liquid composition is identical in the composition of this corrosive liquid and the step 1, seals with rubber cushion and bottle cap, subsequently wide-necked bottle is inverted, and the inversion time is 5min;
Step 3, negative electrode linear sweep: open wide-necked bottle; Solution in the wide-necked bottle is transferred in the three-electrode system; Connect electrochemical workstation; The rotating speed of setting rotating disk electrode (r.d.e) is 500r/min, through using rotating disk electrode (r.d.e) solution is carried out negative electrode linear sweep, confirms the current density value at-0.10V current potential place.
Step 4, data processing: with the standard straight-line equation that obtains in the current density value substitution step 1 that records in the step 3:
Obtain iron concentration in the solution
; Obtain the iron solution value of test pieces again according to formula [1]
In the formula:
is the iron solution value of test pieces;
According to the method for step 1 to step 4 in the present embodiment, the test result of No. 5 and No. 6 test pieces and prior art AAS iron solution value are as shown in table 6.
The rotating disk electrode (r.d.e) method is analyzed iron solution value result and prior art AAS iron solution value among table 6 embodiment 3
| Sample | Current density (mA/cm 2) | Iron concentration (mg/L) | Iron solution value (g/m 2) | AAS iron solution value (g/m 2) |
| No. 5 | 2.89E-02 | 19.22 | 0.2835 | 0.2971 |
| No. 6 | 8.48E-02 | 87.39 | 1.2890 | 1.3264 |
Can find out from table 6 test result; The iron solution value that uses the analysis of rotating disk electrode (r.d.e) method to obtain is very little with the numerical value difference of using AAS to obtain; Degree of accuracy is higher; And the very wide 10～100mg/L of ferric ion test concentrations of the present invention, can avoid in the AAS because the error that the corrosive liquid dilution brings.
Claims (4)
1. the rotating disk electrode (r.d.e) method of a quantitative test tin plate porosity, it is characterized in that: this method comprises the steps:
The drafting of step 1, standard straight-line: at first prepare the corrosive liquid that evenly mixes by dilute sulfuric acid, hydrogen peroxide and distilled water; With the corrosive liquid break into portions, in every part of corrosive liquid, add the iron sulfate of different quality then, process the standard solution of different iron ion contents; Standard solution is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed; Connect electrochemical workstation, the rotating speed of setting rotating disk electrode (r.d.e) is α, and α is 500～2000r/min; Through using rotating disk electrode (r.d.e) standard solution is carried out cathode potential linear sweep; The current density value of standard solution under the β current potential of different iron concentrations being carried out fitting a straight line, obtain the straight-line equation of standard straight-line and this standard straight-line, β is-0.45～-0.10V;
The encapsulation of step 2, test pieces: tin plate to be measured is cut out a slice test pieces, then test pieces is fixed in the bottle mouth position and the sealing of the wide-necked bottle that corrosive liquid is housed, subsequently wide-necked bottle is inverted, the inversion time is 5～30min;
Step 3, cathode potential linear sweep: open wide-necked bottle; Solution in the wide-necked bottle is transferred in the three-electrode system that rotating disk electrode (r.d.e) is installed; Connect electrochemical workstation; The rotating speed of setting rotating disk electrode (r.d.e) is α, through using rotating disk electrode (r.d.e) solution is carried out cathode potential linear sweep, confirms the current density value at β current potential place;
Step 4, data: with the standard straight-line equation that obtains in the current density value substitution step 1 that records in the step 3; Obtain iron concentration in the solution
; Obtain the iron solution value of test pieces again according to formula [1]
In the formula:
is the iron solution value of test pieces;
2. the rotating disk electrode (r.d.e) method of quantitative test tin plate porosity according to claim 1; It is characterized in that: contain mass percentage concentration in the described corrosive liquid and be dilute sulfuric acid 18～26mL of 10～15%; Mass percentage concentration is hydrogen peroxide 1～3mL of 30～36%, distilled water 20～30mL; Dilute sulfuric acid is slowly joined in the solution of being made up of hydrogen peroxide and distilled water, mix and be mixed with corrosive liquid.
3. the rotating disk electrode (r.d.e) method of quantitative test tin plate porosity according to claim 2; It is characterized in that: corrosive liquid is divided into 5 parts, adds iron sulfate 5 parts of corrosive liquids are processed the standard solution that iron concentration is respectively 20mg/L, 40mg/L, 60mg/L, 80mg/L and 100mg/L.
4. the rotating disk electrode (r.d.e) method of quantitative test tin plate porosity according to claim 1 is characterized in that: said test pieces is for circular, and the area of test pieces is 20～40cm
2
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680178A (en) * | 2016-12-21 | 2017-05-17 | 贵州振华群英电器有限公司（国营第八九厂） | Gold plated layer pore detection method on silver-magnesium-nickel material |
| CN110132825A (en) * | 2018-02-09 | 2019-08-16 | 宝山钢铁股份有限公司 | A kind of evaluation method of chrome plating corrosion resistance of surface |
| CN114018797A (en) * | 2021-09-30 | 2022-02-08 | 上海治臻新能源股份有限公司 | Corrosion resistance testing method for fuel cell metal bipolar plate coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4926113A (en) * | 1989-01-26 | 1990-05-15 | Iowa State University Research Foundation, Inc. | Means and method for conductometric phase transition porosimetry |
| US20060248948A1 (en) * | 2003-04-29 | 2006-11-09 | Roland Lenormand | Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| CN1987419A (en) * | 2006-12-21 | 2007-06-27 | 复旦大学 | Electrochemical method for detecting anodic oxidation aluminium formwork effective hole density |
| CN101710058A (en) * | 2009-11-24 | 2010-05-19 | 太原理工大学 | Method for measuring electroactive area of three-dimensional porous membrane electrode |
-
2010
- 2010-07-07 CN CN 201010219692 patent/CN102313690B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4926113A (en) * | 1989-01-26 | 1990-05-15 | Iowa State University Research Foundation, Inc. | Means and method for conductometric phase transition porosimetry |
| US20060248948A1 (en) * | 2003-04-29 | 2006-11-09 | Roland Lenormand | Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| CN1987419A (en) * | 2006-12-21 | 2007-06-27 | 复旦大学 | Electrochemical method for detecting anodic oxidation aluminium formwork effective hole density |
| CN101710058A (en) * | 2009-11-24 | 2010-05-19 | 太原理工大学 | Method for measuring electroactive area of three-dimensional porous membrane electrode |
Non-Patent Citations (3)
| Title |
|---|
| 刘彪等: "原板的电化学酸洗对镀锡板表面形貌及孔隙率的影响", 《电镀与涂饰》, vol. 29, no. 1, 31 January 2010 (2010-01-31), pages 19 - 22 * |
| 张富强等: "磁性固位体耐蚀性能的研究", 《中华口腔医学杂志》, vol. 36, no. 4, 31 July 2001 (2001-07-31), pages 295 - 297 * |
| 田慧玲等: "《中华人民共和国国家标准 GB/T22316-2008 电镀锡钢板耐腐蚀性试验方法》", 19 August 2008, article "电镀锡钢板耐腐蚀性试验方法", pages: 1-8 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680178A (en) * | 2016-12-21 | 2017-05-17 | 贵州振华群英电器有限公司（国营第八九厂） | Gold plated layer pore detection method on silver-magnesium-nickel material |
| CN110132825A (en) * | 2018-02-09 | 2019-08-16 | 宝山钢铁股份有限公司 | A kind of evaluation method of chrome plating corrosion resistance of surface |
| CN114018797A (en) * | 2021-09-30 | 2022-02-08 | 上海治臻新能源股份有限公司 | Corrosion resistance testing method for fuel cell metal bipolar plate coating |
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| CN102313690B (en) | 2013-04-24 |
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