CN105954613A - Titanium electrode acceleration life testing device - Google Patents

Titanium electrode acceleration life testing device Download PDF

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Publication number
CN105954613A
CN105954613A CN201610278593.7A CN201610278593A CN105954613A CN 105954613 A CN105954613 A CN 105954613A CN 201610278593 A CN201610278593 A CN 201610278593A CN 105954613 A CN105954613 A CN 105954613A
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CN
China
Prior art keywords
plate
electrode
groove
titanium
anode
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CN201610278593.7A
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Chinese (zh)
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辛永磊
邢路阔
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725th Research Institute of CSIC
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725th Research Institute of CSIC
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Priority to CN201610278593.7A priority Critical patent/CN105954613A/en
Publication of CN105954613A publication Critical patent/CN105954613A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/003—Environmental or reliability tests

Abstract

The invention provides a titanium electrode acceleration life testing device which comprises a power supply, an electrolytic reaction tank, an anode clamp and an inertia cathode. The upper part of the electrolytic reaction tank is communicated with an exhaust pipe. The lower part of the anode clamp is connected with a titanium clamping groove through a bolt. A titanium electrode sample is clamped and fixed in the titanium clamping groove. The anode clamp and the inertia cathode are externally connected with an anode and a cathode of the power supply. The titanium clamping groove comprises upper and lower plate bodies. A connection plate body is arranged between the upper and lower plate bodies. A sample groove is formed in the lower plate body. The titanium electrode sample is clamped and fixed between the sample groove and the upper plate body. The upper end part of the connection plate body is connected with a piston plate body and extends into an inner cavity of the upper plate body. A spring sleeves the outer side of the connection plate body. One end of the spring is abutted against the bottom surface of the piston plate body, and the other end is abutted against the inner bottom wall of the upper plate body. The titanium electrode acceleration life testing device is simple in structure, convenient in operation, accurate and reliable in data measurement and suitable for titanium electrode materials of different types. The titanium electrode acceleration life testing device can be used by titanium electrode production factories, users, enterprises working on cathode protection, and consultants to realize quality control over titanium electrodes.

Description

A kind of Ti electrode accelerating lifetime testing device
Technical field
The present invention relates to technical field of electrochemistry, specifically a kind of Ti electrode accelerating lifetime testing device, it can be certainly Dynamic monitoring gathers groove pressure data, controls output electric current and output voltage, and automaticity is high, can be used for Fast Evaluation dissimilar The durability of titanium electrode material.
Background technology
Impressed current cathodic protection is to prevent the metallic structures in sea water, fresh water, soil and armored concrete knot The effective ways of structure thing corrosion.Impressed current anode is the critical material in impressed current cathodic protection system, and its effect is by direct current The protective current that power-supply device is provided is delivered to protected works surface via medium.Impressed current cathodic protection is with auxiliary Supporing yang pole should have good chemical property and long service life and good economy.Can be as the material of impressed current anode Material has a lot, such as high-silicon cast iron, graphite, pb-ag alloy, platinum composite anode and titanio mixed metal oxide electrode etc..Its In, titanio mixed metal oxide electrode (being called for short " Ti electrode ") is by coating IrO on Titanium base2、RuO2、Ta2O5、SnO2Etc. expensive Coating of metal oxides and constitute, not only there is good electro-chemical activity, low consumption speed and the long-life, and lightweight, It is easily processed into required shape, there is high cost performance and wide spectrum adaptability, it has also become be the most competitive and obtain extensively should High-performance auxiliary anode material.
Durability is one of most important service behaviour of metal oxide anode.In Practical Project, due to cathodic protection With the service life of titanio mixed metal oxide electrode generally all more than the more than ten years, anode therefore can not be waited to lose efficacy after Obtain working life data.So, set up one at laboratory and evaluate the cathodic protection titanium-based metal oxide electrode use longevity The accelerating lifetime testing method of life is necessary.Patent CN205003179U describes a kind of Ni-Ti anode life test folder Tool, Ni-Ti anode needs to be connected with fixture by fixing hole, it is desirable to Ni-Ti anode surface carries out mechanical punching process, at accelerated aging electricity In solution preocess easily there is local shedding in Ni-Ti anode punching edge precious metal oxide coating, causes test error in data relatively Greatly, the verity of appreciable impact result of the test.
Summary of the invention
The technical assignment of the present invention is for the deficiencies in the prior art, it is provided that a kind of Ti electrode accelerating lifetime testing device, To evaluate Ti electrode stability under different working conditions.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Ti electrode accelerating lifetime testing device, including power supply, cell reaction groove and the sun being positioned at cell reaction groove Pole fixture and inert cathode, described cell reaction groove top connection exhaustor, anode clamp bottom is provided with titanium fabrication groove, titanium fabrication Groove is connected by bolt and anode clamp are fixing, and Ti electrode sample (namely titanium-based metal oxide electrode) activity is embedded in titanium system In draw-in groove, anode clamp and the positive pole of inert cathode external power supply and negative pole.
Concrete, described titanium fabrication groove includes upper plate body and lower body, is vertically provided with connecting plate between upper plate body and lower body Body, Ti electrode sample is embedded at upper plate body, connects in the C-channel mouth that plate body and lower body connect into, connects plate body upper end company Take over a job seben body stretch into the inner chamber of upper plate body, connect the outer sheath of plate body and be provided with spring, at the bottom of spring one end and piston plate body Face abuts, and one end abuts with diapire in upper plate body.
Concrete, described power supply is direct-current switch power supply, and the size parameter of its output electric current and voltage can regulate in real time, Big output voltage is less than 15A less than 30V, maximum output current, is responsible for applying operating current to Ti electrode sample, uses height Under electric current density, constant-current electrolysis mode accelerates the failure procedure of Ti electrode sample, thus obtains Ti electrode in the shorter test period The accelerating lifetime testing result of sample.
Concrete, described inert cathode work area is 10-15 times of Ti electrode sample.
Concrete, described inert cathode and Ti electrode sample spacing control within 20-50mm scope.
Concrete, connect between described anode clamp and inert cathode and have groove to press monitor, groove pressure monitor to use MCGS work Journey configuration software is programmed design, the groove pressure data in acquisition and recording test process, possesses anode function of failure alarm.
Concrete, state and on groove lid, offer thermometer hole, in thermometer hole, be plugged with the thermometer stretched in cell reaction groove.
Concrete, described cell reaction trench bottom is provided with stirring magneton.
Concrete, described anode clamp quantity is multiple, and multiple anode clamp parallel connections access circuit.
Concrete, described inert cathode is platy structure, optional titanium plate, it is also possible to other inert materials such as platinum, niobium and Zirconium etc..
Concrete, described Ti electrode sample is tabular, netted, tubulose or other shapes.
A kind of Ti electrode accelerating lifetime testing device of the present invention compared with prior art produced by provide the benefit that:
(1) Ti electrode sample fixes between sample groove and upper plate body, and its installation is easy to operate, can change in real time, it is to avoid Accelerated aging electrolytic process punches edge precious metal oxide coating generation local shedding, and cause test data Error is relatively big, appreciable impact result of the test verity problem；
(2) groove pressure monitor can Real-time Collection, record and preserve groove pressure data, solve that manual record data are time-consuming, expense The problem of power；
(3) test plant automation degree is high, possess groove and press through the warning function of load, it is to avoid owing to Ti electrode sample connects Touch the problem that the reasons such as bad or aging circuit cause DC power supply device overload operation；
(4) electrolyte uses magnetic agitation mode, and the gas facilitating electrolytic process Anodic and cathode surface to produce is quick Effusion, and ensure that concentration of electrolyte is evenly distributed.
Present configuration is simple, easy to operate, and automaticity is high, and measurement data is accurately and reliably, it is adaptable to dissimilar Titanium electrode material, accelerated life test result can be additionally used in evaluation comparison and the actual life of titanium electrode material durability Prediction.Ti electrode manufacturer and user and be engaged in the enterprise of cathodic protection and advisory agent can be used for realizing Ti electrode Quality control.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention a kind of Ti electrode accelerating lifetime testing device；
Accompanying drawing 2 is the perspective view of titanium fabrication groove involved in the present invention；
Accompanying drawing 3 is the main TV structure schematic diagram of titanium fabrication groove involved in the present invention；
Accompanying drawing 4 is the right TV structure schematic diagram of titanium fabrication groove involved in the present invention；
Accompanying drawing 5 is the structure for amplifying schematic diagram of part A in Fig. 3；
Accompanying drawing 6 is that typical anode groove pressure is with electrolysis time change curve；
Accompanying drawing 7 is the groove pressure change curve during test case one Ti electrode accelerating lifetime testing；
Accompanying drawing 8 is the accelerating lifetime testing result of one 7 groups of Ti electrode samples of test case；
Accompanying drawing 9 is test case two high performance metal-oxide anode life and the relation of electric current density.
In figure, 1, DC source, 2, groove pressure monitor, 3, thermometer, 4, exhaustor, 5, groove lid, 6, anode clamp, 7, lazy Property negative electrode, 8, cell reaction groove, 9, stirring magneton, 10, bolt, 11, titanium fabrication groove, 12, Ti electrode sample, 13, piston plate body, 14, plate body is connected, 15, upper plate body, 16, spring, 17, lower body.
Detailed description of the invention
Embodiment is below used to combine accompanying drawing 1-9 to describe the present invention a kind of Ti electrode accelerating lifetime testing device in detail The present invention how application technology means are solved technical problem by embodiment whereby, and reach technique effect realize process Can fully understand and implement according to this.
(1) Ti electrode accelerating lifetime testing device
As shown in accompanying drawing 1,2, a kind of Ti electrode accelerating lifetime testing device of the present invention, its structure include DC source 1, Cell reaction groove 8, the anode clamp 6 being positioned at cell reaction groove 8 and inert cathode 7.Anode clamp 6 uses titanium plate, anode clamp Having 6 bottoms and be provided with titanium fabrication groove 11, Ti electrode sample 12 (namely titanium-based metal oxide electrode) fixes in titanium fabrication groove 11, Titanium fabrication groove 11 is connected by bolt 10 is fixing with anode clamp 6, and anode clamp 6 and inert cathode 7 external direct current power supply 1 are just Pole and negative pole.Groove pressure monitor 2 it is also associated with between anode clamp 6 and inert cathode 7.
Wherein, DC source 1 is direct-current switch power supply, and the size parameter of its output electric current and voltage can regulate in real time, stricture of vagina Wave system number is not more than 5%, and maximum output voltage is less than 30V, and maximum output current is less than 15A, is responsible for Ti electrode sample 12 apply operating current, use constant-current electrolysis mode under high current density to accelerate the failure procedure of Ti electrode sample 12, thus The accelerating lifetime testing result of Ti electrode sample 12 is obtained in the shorter test period.DC source 1 positive terminal jointed anode presss from both sides Tool 6, negative terminal connects inert cathode 7, can be electrolysed multiple Ti electrode sample 12 in the way of using parallel connection simultaneously.During test Avoid changing the current value applied, ensure the steady operation of DC source 1 simultaneously, avoid circut breaking as far as possible.
It is provided with groove lid 5 at the notch of cell reaction groove 8, groove lid 5 is offered anode hole, cathode aperture, steam vent and thermometer Hole, anode clamp 6 and inert cathode 7 are plugged in described anode hole and cathode aperture respectively, steam vent connection exhaustor 4, are used for Discharge hydrogen, oxygen or the chlorine produced in test process.The thermometer stretched in cell reaction groove 8 it is plugged with in thermometer hole 3。
Inert cathode 7 selects the titanium plate with low hydrogen-evolution overpotential and excellent anticorrosive performance, it is also possible to other inert materials Such as platinum, niobium and zirconium etc..Inert cathode 7 is shaped as platy structure, and its work area should be 10～15 times of Ti electrode sample 12.Lazy Property negative electrode 7 and Ti electrode sample 12 spacing control within 20-50mm scope.
As shown in accompanying drawing 2,3,4,5, Ti electrode sample 12 is tabular, uses titanium fabrication groove 11 to be fixed.Titanium fabrication groove 11 include upper plate body 15 and lower body 17, and upper plate body 15 is Z-shape, and including riser section and inverted L-shaped section, lower body 17 is L-shaped, upper plate Vertically be provided with between body 15 with lower body 17 and be connected plate body 14, Ti electrode sample 12 be embedded upper plate body 15, connect plate body 14 with under In the C-channel mouth that plate body 17 connects into, lower body 17 is offered the sample groove for plug-in mounting Ti electrode sample 12, connect plate body 14 During upper end connects piston plate body 13 and stretches into the inner chamber of upper plate body 15, the outer sheath connecting plate body 14 is provided with Rectangular Spring 16, Rectangular Spring 16 one end abuts with piston plate body 13 bottom surface, and one end abuts with diapire in upper plate body 15.Owing to connecting on plate body 14 End connects piston plate body 13, connects plate body 14 and piston plate body 13 stretches in upper plate body 15 inner chamber, and is connecting outside plate body 14 Sheathed Rectangular Spring 16, forms stretching structure between upper plate body 15 and lower body 17, and therefore, Ti electrode sample 12 can conveniently be dismantled Change, additionally, this titanium fabrication groove 11 can also be suitable for various sizes of Ti electrode sample 12.Titanium fabrication groove 11 is by bolt 10 and sun Pole fixture 6 connects fixing, and then anode clamp 6 is connected with DC source 1 positive terminal by cable, it is ensured that its electric conductivity meets Test request.Certainly, in the present invention, Ti electrode sample 12 is not limited only to tabular, can be also netted, tubulose or other shapes.When So, the dimensions of titanium fabrication groove 11 is changed also dependent on Ti electrode sample 12 size.It should be noted that for ensureing examination Testing the accuracy of data, the quantity of Ti electrode sample 12 is not less than 3.
Groove pressure monitor 2 be a set of based on MCGS Engineering configuration software, grind China's module and computer programming Integrated design Monitoring system, by the acquisition process to groove pressure data, possesses display in real time, alert process, history data store and form defeated The function such as go out.In test process, it is 10V that setting slot presses limit value, when groove pressure data meet or exceed 10V, i.e. thinks Ti electrode Sample 12 lost efficacy, and stopped test.By computer with report form output magazine pressure test data, analytical calculation obtains Ti electrode Accelerated life test result.Groove pressure monitoring system has 4 passages, can monitor the accelerated aging of 4 groups of Ti electrode samples 12 simultaneously Test data.
In test process, thermometer 3 uses mercurial thermometer 3, and range ability is 0～100 DEG C, is used for measuring electrolyte and surveys The variations in temperature of examination process.Exhaustor 4 uses glass tubing, for discharging hydrogen, oxygen or the chlorine produced in test process.Electricity Solving and be provided with stirring magneton 9 bottom reactive tank 8, stirring magneton 9 is for using politef material, and specification is cylindrically shaped, uses In magnetic agitation electrolyte.
(2) Ti electrode accelerating lifetime testing method
Experimental condition in different tests solution is shown in Table 1.
Table 1. different tests solution Anodic accelerating lifetime testing condition
Note: 1. using Ti electrode sample 12 as anode, inert cathode 7 is as negative electrode.
2. the shape and size of anode sample can be changed according to actual requirement.
3. process of the test should periodically add a certain amount of distilled water or change testing liquid, with the liquid of guarantee test solution Position and concentration are basicly stable.
Ti electrode accelerating lifetime testing test procedure:
A. testing liquid is poured Ti electrode accelerating lifetime testing device into, it is ensured that flood the effective working position of anode completely；
B. connect DC source 1 and to regulate Faradaic current be setting, and maintain it constant in process of the test；
Monitor the parameters such as electrolysis time, Faradaic current and electrolysis bath pressure the most continuously；
D. bath voltage stops test when starting the most significantly to rise rapidly, calculates and presses off from starting to be tested to electrolyzer electric Begin the electrolysis time t added up when significantly risinga, i.e. Ti electrode accelerated aging.
Accompanying drawing 6 shows that typical anode groove pressure is with electrolysis time change curve.
Test case one
(1) DC source 1 uses LW3J10 type DC current regulator power supply, possesses constant current and two kinds of mode of operations of constant voltage, Output voltage range: 0～30V, output current scope: 0～10A.
(2) Ti electrode sample 12: selecting iridium tantalum system titanium-based metal oxide electrode, specification is platy structure, dimensioned For 20mm × 10mm, electrode area is 200mm2.Sample quantities: 7.
(3) inert cathode: selection titanium plate as inert cathode, dimensioned is: 200mm × 20mm.
(4) the test device using present invention design is accelerated life test to Ti electrode sample 12, selects 1mol/L Sulfuric acid solution is 20000A/m as electrolyte, applying working current density2, inert cathode 7 with Ti electrode sample 12 spacing is 20mm, is accelerated life test to Ti electrode sample 12.
(5) use groove pressure monitor 2 continuous acquisition track pressure data, when groove pressure rises to 10V, i.e. think Ti electrode sample 12 lost efficacy, and stopped test, derived groove pressure test data by computer, calculated the accelerating lifetime testing knot of Ti electrode sample 12 Really, and drawing slot pressure is with the change curve of electrolysis time.
Test result refers to accompanying drawing 7 and 8.Wherein, the groove bucklingization during Fig. 7 is Ti electrode accelerating lifetime testing is bent Line, Fig. 8 is the accelerating lifetime testing result of 7 groups of Ti electrode samples 12.
Test case two
(1) DC source 1 uses LW3J10 type DC current regulator power supply, possesses constant current and two kinds of mode of operations of constant voltage, Output voltage range: 0～30V, output current scope: 0～10A.
(2) Ti electrode sample 12: selecting iridium tantalum system titanium-based metal oxide electrode, specification is platy structure, dimensioned For 20mm × 10mm, electrode area is 200mm2.Sample quantities: 3.
(3) negative electrode: selection titanium plate as negative electrode, dimensioned is: 200mm × 20mm.
(4) the test device using present invention design is accelerated life test to Ti electrode sample 12, selects 1mol/L Metabisulfite solution is as electrolyte, and applying working current density respectively is 25000A/m2, 30000A/m2, 35000A/m2, negative electrode Anode spacing is 20mm, and Ti electrode is accelerated life test.
(5) use groove pressure monitoring system continuous acquisition track pressure data, when groove 4 pressure rises to 10V, i.e. think that Ti electrode loses Effect, stops test, derives groove pressure test data by computer, calculates the accelerating lifetime testing result of Ti electrode, and pass through warp Test the service life of formula to calculating method prediction anode.
Under 3 kinds of electric current densities, the accelerated aging of Ti electrode is respectively 1228h, 707h and 400h, calculates according to experimental data Obtain the relation of electric current density and electrolysis life-span, as shown in Figure 9.Matching test data obtains empirical equation: log L=A-B Log i, wherein A is 7.53, and B is 1.87, correlation coefficient: 0.9968, and wherein L is electrolysis time, and i is electric current density, according to upper Formula, and then can be to anode service life in practice it can be inferred that this anode service life of working under arbitrary electric current density It is predicted.With the rated operational current density of Ti electrode sample 12 as 2000A/m2Calculate, use empirical equation to calculate prediction The service life of anode was up to 23 years.
A kind of Ti electrode accelerating lifetime testing device of the present invention, its processing and fabricating is simple and convenient, by specification accompanying drawing institute Show processing and fabricating.
In addition to the technical characteristic described in description, it is the known technology of those skilled in the art.

Claims (10)

1. a Ti electrode accelerating lifetime testing device, including power supply, cell reaction groove and the anode being positioned at cell reaction groove Fixture and inert cathode, it is characterised in that described cell reaction groove top connection exhaustor, anode clamp bottom is provided with titanium fabrication Groove, titanium fabrication groove is connected by bolt and anode clamp are fixing, and Ti electrode sample activity is embedded in titanium fabrication groove, anode clamp Positive pole and negative pole with inert cathode external power supply.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1, it is characterised in that described titanium fabrication groove bag Including upper plate body and lower body, be vertically provided with and be connected plate body between upper plate body with lower body, Ti electrode sample is embedded in upper plate body, connection In the C-channel mouth that plate body and lower body connect into, connect during plate body upper end connects piston plate body and stretch into the inner chamber of upper plate body, The outer sheath connecting plate body is provided with spring, and spring one end abuts with piston plate body bottom surface, and one end abuts with diapire in upper plate body.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described inertia is cloudy Pole work area is 10-15 times of Ti electrode sample.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described inertia is cloudy Pole and Ti electrode sample spacing control within 20-50mm scope.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described anode clamp Connect between tool and inert cathode and have groove to press monitor.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that on described groove lid Offer thermometer hole, in thermometer hole, be plugged with the thermometer stretched in cell reaction groove.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described electrolysis is anti- Trench bottom is answered to be provided with stirring magneton.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described anode clamp Tool quantity is multiple, and multiple anode clamp parallel connections access circuit.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described inertia is cloudy Extremely titanium plate, platinum sheet, niobium plate or zirconium plate.
A kind of Ti electrode accelerating lifetime testing device the most according to claim 1 and 2, it is characterised in that described Ti electrode Sample is tabular, netted or tubulose.
CN201610278593.7A 2016-04-29 2016-04-29 Titanium electrode acceleration life testing device Pending CN105954613A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111537817A (en) * 2020-05-09 2020-08-14 南京麦澜德医疗科技有限公司 Automatic testing tool and testing method for electrode aging life

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CN2368858Y (en) * 1999-05-07 2000-03-15 张郭根 Clamp for electrolytizing circuit boards
CN102965714A (en) * 2012-06-08 2013-03-13 东莞市益泉电热挂具有限公司 Electroplating clamp
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CN204752886U (en) * 2015-06-29 2015-11-11 陈吉福 Anchor clamps structure of positive pole
CN205003179U (en) * 2015-09-24 2016-01-27 苏州市铂瑞工业材料科技有限公司 Titanium anode life -span test fixture
CN205176075U (en) * 2015-12-14 2016-04-20 何建国 Aluminum electrolytic capacitor's test fixture

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2368858Y (en) * 1999-05-07 2000-03-15 张郭根 Clamp for electrolytizing circuit boards
CN102965714A (en) * 2012-06-08 2013-03-13 东莞市益泉电热挂具有限公司 Electroplating clamp
CN104030403A (en) * 2012-07-17 2014-09-10 北京师范大学 Preparation method of porous nanocrystal Ti/SnO2-Sn/Ce-PbO2 electrode
CN202786480U (en) * 2012-08-31 2013-03-13 广州中国科学院先进技术研究所 Clamp for electrochemical treatment of metal surface
CN204198870U (en) * 2014-11-04 2015-03-11 昆明理工大学 A kind of device for ionic liquid electrodeposition
CN104831287A (en) * 2015-05-20 2015-08-12 中国船舶重工集团公司第七二五研究所 Method for controlling marine biofouling of titanium alloy workpieces
CN204752886U (en) * 2015-06-29 2015-11-11 陈吉福 Anchor clamps structure of positive pole
CN205003179U (en) * 2015-09-24 2016-01-27 苏州市铂瑞工业材料科技有限公司 Titanium anode life -span test fixture
CN205176075U (en) * 2015-12-14 2016-04-20 何建国 Aluminum electrolytic capacitor's test fixture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111537817A (en) * 2020-05-09 2020-08-14 南京麦澜德医疗科技有限公司 Automatic testing tool and testing method for electrode aging life

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Application publication date: 20160921