CN105973795A - Simple composite electrode for experiment in erosive electrochemistry - Google Patents
Simple composite electrode for experiment in erosive electrochemistry Download PDFInfo
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- CN105973795A CN105973795A CN201610440803.8A CN201610440803A CN105973795A CN 105973795 A CN105973795 A CN 105973795A CN 201610440803 A CN201610440803 A CN 201610440803A CN 105973795 A CN105973795 A CN 105973795A
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
The invention provides a simple composite electrode for an experiment in erosive electrochemistry. The simple composite electrode comprises a reference electrode groove, a salt bridge and an auxiliary electrode. The reference electrode groove is composed of a fixing plug, a solution groove, a reference electrode and an outer salt bridge. The solution groove and the outer salt bridge are filled with a solution corresponding to the reference electrode, the outer salt bridge is fixed into the fixing plug, and the reference electrode is inserted into the outer salt bridge. One end of the salt bridge is inserted into the reference electrode groove, the other end of the salt bride is led out of the electrode groove, and potential of the reference electrode is output into an electrolytic groove. The auxiliary electrode is fixed to the side face of the salt bridge, and the angle of the large surface of the auxiliary electrode can be adjusted according to the angle position of the test surface of a working electrode. According to the composite electrode, the effects of the two electrodes are combined, experimental efficiency can be improved, structural stability is high, the effects are diverse, the application range is wide, and erosive electrochemistry tests of working electrodes of multiple varieties can be carried out.
Description
Technical field
The present invention relates to material corrosion electrochemical field, a kind of carry out the detection of material corrosion performance easily electrochemistry experiment time combination electrode.
Background technology
When carrying out the electrochemistry experiment test in terms of material corrosion resistance, what basic need possessed in a cell is exactly three-electrode system, i.e. working electrode, auxiliary electrode and reference electrode.In electrolysis bath, the relative position between three electrodes and the fixing situation in experimentation influence whether the accuracy of corrosion experiment result.When carrying out electrochemistry experiment, it is common that be separately fixed in electrolysis bath by these three electrodes, this also exists certain problem: 1. need to fix three electrodes successively before experiment, comparatively laborious in step, inefficiency；2. electrode is directly installed in plain electrolysers, it is difficult to reinforcing, in experimentation, the variation of electrode position, particularly reference electrode can affect the accuracy of experimental result relative to moving of working electrode position.In prior art, not used for material corrosion performance detection electrochemistry experiment time combination electrode.
Summary of the invention
The technical problem to be solved is, the shortcoming overcoming prior art, a kind of simple combination electrode of Experiment in Erosive Electrochemistry is provided, reference electrode and auxiliary electrode are made and becomes the combination electrode of a band pedestal, only working electrode need to be fixed before Experiment in Erosive Electrochemistry, reduce experimental procedure, be effectively increased conventional efficient；And, this combination electrode is simple for production, structural stability is strong, can be directly placed in electrolysis bath, it is not necessary to additionally fix, and trace will not be occurred to move, the effective guarantee accuracy of experimental result.
The present invention solves the technical scheme of above technical problem:
A kind of simple combination electrode of Experiment in Erosive Electrochemistry, including:
One reference electrode groove, it includes solution tank, fixing plug, outer salt bridge and reference electrode, solution tank functions simultaneously as combination electrode pedestal, outer salt bridge is tubular structure, all fill, in solution tank and outer salt bridge, the solution that described reference electrode is corresponding, fixing plug is fixed on the opening of solution tank, outer salt bridge is positioned in the solution of described solution tank through fixing its lower end of filling in, reference electrode inserts in outer salt bridge, can ensure not pollute reference electrode, and retract and be also convenient for, solution tank and the shape of fixing plug and material are not particularly limited, as long as ensureing form fit during combination between the two；
One salt bridge, salt bridge be shaped as U-tube shape, its one end is through the fixing solution tank filled in and be positioned at reference electrode groove, the end of the other end is upright spike tube or the spike tube of bending and is positioned in the electrolysis bath of setting when experiment, upright spike tube or the spike tube of bending are vertical with working electrode test surfaces to be measured, and the angle position with specific reference to working electrode test surfaces to be measured determines；
One auxiliary electrode, auxiliary electrode is fixed on the side of salt bridge, and auxiliary electrode is parallel with working electrode test surfaces to be measured, and the angle position with specific reference to working electrode test surfaces to be measured carries out parallel, vertical or other angles placement.
The technical scheme that the present invention limits further is:
The simple combination electrode of aforesaid Experiment in Erosive Electrochemistry, is additionally provided with protector, fills in the solution that reference electrode is corresponding in protector, when combination electrode is on the shelf, deposits in the solution of the end insertion protector that salt bridge is positioned at outside reference electrode groove.
The simple combination electrode of aforesaid Experiment in Erosive Electrochemistry, auxiliary electrode uses gluing or binding mode to be fixed on the side of salt bridge.
The simple combination electrode of aforesaid Experiment in Erosive Electrochemistry, the shape of solution tank and fixing plug is not particularly limited, as long as ensureing form fit during combination between the two；Its material with the solution corresponding to reference electrode to become inertia；The material of salt bridge is insulator, and with the solution corresponding to described reference electrode to become inertia.
The invention has the beneficial effects as follows:
(1) two electrode effect unifications, conventional efficient can be improved: reference electrode and the auxiliary electrode of former electrochemistry experiment are united two into one by combination electrode of the present invention, number of electrodes is become two by three, only combination electrode and working electrode electrode need to be fixed in a cell before Experiment in Erosive Electrochemistry, reduce experimental procedure, be effectively increased conventional efficient.
(2) structural stability is strong, can improve the accuracy of experiment: the reference electrode groove of combination electrode of the present invention itself is as pedestal, and stability is the highest, only need to support with it when experiment, salt bridge and auxiliary electrode end is inserted in electrolysis bath.
(3) effect is various, it is widely used: the terminal end shape of the salt bridge of combination electrode of the present invention can be designed into the bend pipe of different angles according to the angle of the test surfaces of working electrode, the surface angle of auxiliary electrode also can change, and can carry out the corrosion electrochemistry test of multiple types working electrode.
(4) simple structure, detachability is strong: the combination electrode of the present invention is that Simple assembled forms, and when this combination electrode is on the shelf, can take reference electrode and auxiliary electrode apart use respectively, will not lose its respective original function.
Accompanying drawing explanation
The structural representation of Fig. 1 embodiment of the present invention 1.
The structural representation of Fig. 2 embodiment of the present invention 2.
Fig. 3 be combination electrode of the present invention on the shelf time structural representation.
Detailed description of the invention
Embodiment
1
The present embodiment is a kind of simple combination electrode of Experiment in Erosive Electrochemistry, and structure is as it is shown in figure 1, the difference of shape, specification and chemical characteristic due to electrochemistry experiment working electrode to be measured, and the position of its optimal test surfaces tested is the most different.The simple combination electrode of a kind of Experiment in Erosive Electrochemistry that the present embodiment provides, it is applicable to the situation that position is horizontal level of working electrode test surfaces.
This combination electrode is made up of reference electrode groove, salt bridge, auxiliary electrode 6 three part.Wherein play stability action in reference electrode groove is solution tank 1, solution in solution tank 1 is that (as corresponding in calomel reference electrode is Klorvess Liquid to the corresponding solution of reference electrode, what copper sulfate reference electrode was corresponding is copper-bath etc.), its upper end is by fixing plug 2 closing.Two holes are had: outer salt bridge 3 is through fixing plug 2 one of them hole, and salt bridge is through another one hole, and they are all immersed in solution on fixing plug 2.Solution in outer salt bridge 3 is also the solution that reference electrode is corresponding, and it inserts reference electrode 4.
Owing to working electrode is level working electrode to be measured 8, what salt bridge selected is straight tube salt bridge 5, and the end vertical of the spike tube of straight tube salt bridge 5 faces toward level working electrode to be measured 8.The effect of straight tube salt bridge 5 is to be exported in electrolysis bath 9 by the current potential equivalence of reference electrode 4, plays the effect of reference electrode 4.Auxiliary electrode 6 is fixed on the outer wall of straight tube salt bridge 5 by the mode sticked with glue, and is put by auxiliary electrode 6 horizontal level time gluing, parallel with working electrode 8 position.So, the tip of auxiliary electrode 6 and straight tube salt bridge 5 i.e. constitutes this combination electrode and directly participates in the part of experiment.
During experiment, the part (auxiliary electrode 6 and the tip of straight tube salt bridge 5) that working electrode 8 to be measured for level, combination electrode directly participate in experiment is all put in electrolysis bath 9, and two electrodes unite two into one, and reduce experimental procedure, are effectively increased conventional efficient.After the solution of experiment is poured into and can be carried out experiment in electrolysis bath 9.Now, solution tank 1 is placed in outside electrolysis bath 9, plays support and fixing straight tube salt bridge 5 and the effect of auxiliary electrode 6.After the position of solution tank 1 maintains static, the position of straight tube salt bridge 5 and auxiliary electrode 6 the most just secures, and stability is fine, trace will be occurred to move in experimentation.
Embodiment
2
The present embodiment is the simple combination electrode of a kind of Experiment in Erosive Electrochemistry, and structure is as in figure 2 it is shown, it is applicable to the situation that position is stand up position of working electrode test surfaces.
This combination electrode is made up of reference electrode groove, salt bridge, auxiliary electrode 6 three part.The part of reference electrode groove is identical with embodiment 1.Owing to working electrode is upright working electrode to be measured 10, what salt bridge selected is bend pipe salt bridge 11, and the end vertical of the spike tube of bend pipe salt bridge 11 faces toward upright working electrode 10 to be measured.The effect of bend pipe salt bridge 11 is also to be exported in electrolysis bath 9 by the current potential equivalence of reference electrode 4, plays the effect of reference electrode 4.Auxiliary electrode 6 is fixed on the outer wall of bend pipe salt bridge 11 by the mode sticked with glue, and auxiliary electrode 6 stand up position is put time gluing, parallel with working electrode 10 position.
During experiment, the part (auxiliary electrode 6 and the tip of bend pipe salt bridge 11) that upright working electrode 10 to be measured, combination electrode directly participate in experiment is all put in electrolysis bath 9, after the solution of experiment is poured into and can be carried out experiment in electrolysis bath 9.
When combination electrode of the present invention is on the shelf, structure is as shown in Figure 3; it is additionally provided with protector 7; fill in the solution that reference electrode is corresponding in protector 7, when combination electrode is on the shelf, the solution of the end insertion protector that salt bridge is positioned at outside reference electrode groove is deposited.
In addition to the typical case of embodiment 1 and embodiment 2, if the test surfaces position level of working electrode and upright other outer angle, the angle of auxiliary electrode 6 can also change therewith, it is ensured that the angle of auxiliary electrode 6 and the angle parallel of working electrode.And the angle of salt bridge spike tube part can also be designed to the angle of correspondence, as long as ensureing the angle vertical with working electrode.
In addition to the implementation, the present invention can also have other embodiments.The technical scheme that all employing equivalents or equivalent transformation are formed, all falls within the protection domain of application claims.
Claims (4)
1. the simple combination electrode of Experiment in Erosive Electrochemistry, it is characterised in that: including:
One reference electrode groove, it includes solution tank (1), fixing plug (2), outer salt bridge (3) and reference electrode (4), described solution tank (1) functions simultaneously as combination electrode pedestal, described outer salt bridge (3) is tubular structure, all fill, in described solution tank (1) and outer salt bridge (3), the solution that described reference electrode (4) is corresponding, described fixing plug (2) is fixed on the opening of described solution tank (1), described outer salt bridge (3) is positioned in the solution of described solution tank (1) through described fixing plug (2) and its lower end, described reference electrode (4) inserts in described outer salt bridge (3)；
One salt bridge (5), described salt bridge (5) be shaped as U-tube shape, its one end passes described fixing plug (2) and is positioned at the solution tank (1) of described reference electrode groove, the end of the other end is upright spike tube or the spike tube of bending and is positioned in the electrolysis bath of setting when experiment, upright spike tube or the spike tube of bending are vertical with working electrode test surfaces to be measured, and the angle position with specific reference to working electrode test surfaces to be measured determines；
One auxiliary electrode (6), described auxiliary electrode (6) is fixed on the side of described salt bridge (5), described auxiliary electrode (6) is parallel with working electrode test surfaces to be measured, and the angle position with specific reference to working electrode test surfaces to be measured carries out parallel, vertical or other angles placement.
2. the simple combination electrode of Experiment in Erosive Electrochemistry as claimed in claim 1; it is characterized in that: be additionally provided with protector (7); described protector fills, in (7), the solution that reference electrode is corresponding; interior when combination electrode is on the shelf, the solution of the end described protector of insertion (7) that described salt bridge is positioned at outside described reference electrode groove is deposited.
3. the simple combination electrode of Experiment in Erosive Electrochemistry as claimed in claim 1, it is characterised in that: described auxiliary electrode (6) uses gluing or binding mode to be fixed on the side of described salt bridge (5).
4. the simple combination electrode of Experiment in Erosive Electrochemistry as claimed in claim 1, it is characterised in that: described solution tank (1) and fix the material filling in (2) with the solution corresponding to described reference electrode (4) to become inertia；The material of described salt bridge (5) is insulator, and with the solution corresponding to described reference electrode (4) to become inertia.
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| CN201610440803.8A CN105973795B (en) | 2016-06-17 | 2016-06-17 | A kind of simple combination electrode of Experiment in Erosive Electrochemistry |
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| CN201610440803.8A CN105973795B (en) | 2016-06-17 | 2016-06-17 | A kind of simple combination electrode of Experiment in Erosive Electrochemistry |
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Cited By (1)
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| CN113945509A (en) * | 2021-11-01 | 2022-01-18 | 西安稀有金属材料研究院有限公司 | Device and method for performing electrochemical test in high-temperature liquid-phase corrosion environment |
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| CN113945509A (en) * | 2021-11-01 | 2022-01-18 | 西安稀有金属材料研究院有限公司 | Device and method for performing electrochemical test in high-temperature liquid-phase corrosion environment |
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