JPH0516220Y2 - - Google Patents
Info
- Publication number
- JPH0516220Y2 JPH0516220Y2 JP1984160824U JP16082484U JPH0516220Y2 JP H0516220 Y2 JPH0516220 Y2 JP H0516220Y2 JP 1984160824 U JP1984160824 U JP 1984160824U JP 16082484 U JP16082484 U JP 16082484U JP H0516220 Y2 JPH0516220 Y2 JP H0516220Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode wire
- electrode
- insertion hole
- substrate
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 platinum group metals Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、不溶性の電極に関し、例えば強酸
性電解液を電気分解するために用いられる。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an insoluble electrode, and is used, for example, to electrolyze a strongly acidic electrolyte.
（従来の技術）
この種の電極の材料としては白金族に属する金
属が最も優れているが、その反面価格が高くな
る。このため、従来にあつては、厚さが１〜５ミ
クロン程度の例えば白金板を例えばチタンから成
る基体に被膜する、いわゆる渡金方式が採用され
ている。(Prior Art) Metals belonging to the platinum group are the best materials for this type of electrode, but on the other hand, they are expensive. For this reason, conventionally, a so-called metal transfer method has been adopted in which a platinum plate having a thickness of about 1 to 5 microns is coated on a substrate made of titanium, for example.
（考案が解決しようとする問題点）
しかしながら、上記渡金方式にあつては、完全
な組織の白金被膜部を形成することが困難である
ため、その白金被膜部にピンホールやクラツクが
存在し、このピンホールやクラツクを介して電解
液が基体表面に至り、その周囲を腐食し、白金被
膜部を剥離せしめるので、長時間の使用に耐え得
ないという問題点があつた。(Problems to be solved by the invention) However, in the above-mentioned payment method, it is difficult to form a platinum coating with a perfect structure, so pinholes and cracks may exist in the platinum coating. The problem was that the electrolyte reached the surface of the substrate through these pinholes and cracks, corroded the surrounding area, and caused the platinum coating to peel off, making it impossible to withstand long-term use.
そこで、この考案は、白金族の金属を部分使用
しながら長時間の使用に耐え得る不溶性電極を提
供することを課題としている。 Therefore, the object of this invention is to provide an insoluble electrode that can withstand long-term use while partially using platinum group metals.
（問題点を解決するための手段）
しかして、この考案においては、チタン等の可
鍛性金属から成る基体と、白金等の白金族から成
る一つ又は複数の細長い線材の電極線とを用い
る。そして、前記基体に挿入孔を形成し、この挿
入孔に前記電極線を挿入し、前記基体をプレスし
て前記基体と電極線とを結合したものである。(Means for solving the problem) Therefore, in this invention, a base made of a malleable metal such as titanium and one or more elongated electrode wires made of a platinum group metal such as platinum are used. . Then, an insertion hole is formed in the base, the electrode wire is inserted into the insertion hole, and the base is pressed to bond the base and the electrode wire.
（作用）
したがつて、白金族の金属を細長い線材とし、
それを一つ又は複数に束ねて電極線として用いる
ので、その電極線の電流密度を高めて該電極線に
付着するけい酸皮膜の自動剥離ができ、メンテナ
ンスが不用な電極となるし、また、基体をプレス
して基体と電極線とを結合させたので、その結合
が強固なものとなり、そのため、上記課題を達成
することができるものである。(Function) Therefore, by making a platinum group metal into a long and thin wire rod,
Since one or more of them are bundled together and used as an electrode wire, the current density of the electrode wire is increased and the silicic acid film attached to the electrode wire can be automatically peeled off, resulting in an electrode that does not require maintenance. Since the base body and the electrode wire are bonded by pressing the base body, the bond is strong, and therefore the above object can be achieved.
（実施例）
以下、この考案の実施例を図面により説明す
る。(Example) Hereinafter, an example of this invention will be described with reference to the drawings.
第１図ａ，ｂにおいて、この考案の一実施例が
示され、基体１は、例えばほぼ純粋なチタンから
成り、該基体１の一端には、ホルダに結合するた
めのねじ２が形成され、また、該基体１の他端に
は、中心軸方向に有底の挿入孔３が形成されてい
る。この基体１のねじ２及び挿入孔３を除く表面
には、例えばチタンの酸化物から成る絶縁被膜が
形成されている。この絶縁被膜は、予め基体１を
電解液に浸漬、通電して積極的に形成してもよい
が、電気分解に際して２次的に形成することもで
きる。 In FIGS. 1a and 1b, an embodiment of the invention is shown, in which the base body 1 is made of, for example, almost pure titanium, and one end of the base body 1 is formed with a screw 2 for connection to a holder; Further, at the other end of the base body 1, an insertion hole 3 with a bottom is formed in the direction of the central axis. An insulating coating made of, for example, titanium oxide is formed on the surface of the base 1 except for the screws 2 and the insertion holes 3. This insulating coating may be actively formed by immersing the substrate 1 in an electrolytic solution and energizing it in advance, but it can also be formed secondarily during electrolysis.
電極線４は、例えば純度が99.999％程度で0.5
〜数mmφの白金線材で、第２図に示すように、両
端を除いて長円形状に折曲げられており、直線状
に合わせられた両端部分が該電極線４を複数本ま
とめて前記基体１の挿入孔３に挿入されている。 For example, the electrode wire 4 has a purity of about 99.999% and a purity of 0.5
It is a platinum wire rod with a diameter of several mmφ, and as shown in FIG. 2, it is bent into an elliptical shape except for both ends, and both end portions that are aligned in a straight line collect a plurality of electrode wires 4 and connect them to the base. 1 is inserted into the insertion hole 3 of No. 1.
そして、基体１の挿入孔３を形成した部分の周
囲には、偏平部５がプレスされて形成され、この
偏平部５の形成時に挿入孔３が電極線４に圧接す
るよう塑性変形し、基体１と電極線４とが固く結
合されて密着度が高められているものである。 A flat part 5 is pressed around the part of the base 1 where the insertion hole 3 is formed, and when the flat part 5 is formed, the insertion hole 3 is plastically deformed so as to come into pressure contact with the electrode wire 4, and the base 1 and the electrode wire 4 are firmly connected to each other to increase the degree of adhesion.
上述した電極は、例えばNaclを電気分解する
場合に主として陽極として用いられ、基体１のね
じ２でもつてホルダに支持し、電極線４と共に基
体１のねじ２を除く先端部分を電解液に入れて通
電する。これにより電流が電極線４、挿入孔３、
基体１内を通つて流れ、電極線４の周囲で次式の
反応が行われて電気分解がなされる。 The above-mentioned electrode is mainly used as an anode when electrolyzing NaCl, for example. Turn on electricity. This allows the current to flow through the electrode wire 4, the insertion hole 3,
It flows through the substrate 1, and around the electrode wire 4, a reaction of the following formula takes place, resulting in electrolysis.
2cl-→cl2＋2e
電気分解時には、電極線に溶液中に含まれるけ
い酸が付着するが、電極線に発生する酸素（o2）
や塩素（cl）によつて剥される。これは電極線を
線材としたので、面積当りの電流密度が高くな
り、これによつて、自然剥離作用が行なわれる。
従来例の場合には、一枚板で面積が大きく、面積
当りの電流が低く、自然剥離作用が生じず、けい
酸皮膜が付着して電流が流れなくなつていた。 2cl - →cl 2 +2e During electrolysis, silicic acid contained in the solution adheres to the electrode wire, but oxygen (O 2 ) is generated on the electrode wire.
or chlorine (cl). Since the electrode wire is a wire, the current density per area is high, and this causes a natural peeling effect.
In the case of the conventional example, the area of a single plate was large, the current per area was low, natural peeling action did not occur, and a silicate film adhered, making it impossible for current to flow.
尚、上記の実施例にあつては、基体１をチタ
ン、電極線４を白金としたが、基体１はアルミニ
ウム、鉄、その他の可鍛性金属であればよく、ま
た、電極線４はイリジウムその他の白金族のもの
であればよい。また、基体１の絶縁被膜は、上述
した酸化被膜以外に、プラスチツク、ガラス等を
被膜して形成することもできる。 In the above embodiment, the substrate 1 is made of titanium and the electrode wire 4 is made of platinum, but the substrate 1 may be made of aluminum, iron, or other malleable metal, and the electrode wire 4 may be made of iridium. Any other platinum group metal may be used. Further, the insulating coating of the base body 1 can be formed by coating plastic, glass, etc. in addition to the above-mentioned oxide coating.
（考案の効果）
以上述べたように、この考案によれば、可鍛性
金属から成る基体に挿入孔を形成し、この挿入孔
に白金族から成る一つ又は複数の細長い線材の電
極線を挿入し、前記基体をプレスして基体と電極
線との両者を結合したので、電極線の基体への結
合が強固であることから密着度を高め電解液内に
あつても電極の寿命を延ばすことができる。ま
た、基体と電極線とをプレスして結合させたの
で、両者の電気的な結合も強く、且つ製造が容易
であり、さらに、電極線は線材を用いるので、面
積当りの電流密度が高くなり、溶液中に含まれる
けい酸が付着するのを防ぐ自然剥離作用が行なれ
ると共に、価格も安くすることができる等の効果
を奏するものである。(Effects of the invention) As described above, according to this invention, an insertion hole is formed in the base made of malleable metal, and one or more elongated electrode wires made of platinum group are inserted into the insertion hole. Since the electrode wire is inserted and the substrate is pressed to bond both the substrate and the electrode wire, the bonding of the electrode wire to the substrate is strong, increasing the degree of adhesion and extending the life of the electrode even when it is in the electrolyte. be able to. In addition, since the substrate and the electrode wire are bonded by pressing, the electrical bond between the two is strong and manufacturing is easy.Furthermore, since the electrode wire is made of wire, the current density per area is high. This has the advantage of being able to perform a natural peeling action that prevents the silicic acid contained in the solution from adhering, and also being inexpensive.
第１図ａはこの考案の一実施例を示す一部切欠
きの正面図、第１図ｂは同上の一部切欠きの側面
図、第２図は同上に用いた電極線を示す正面図で
ある。
１……基体、３……挿入孔、４……電極線。
Fig. 1a is a partially cutaway front view showing an embodiment of this invention, Fig. 1b is a partially cutaway side view of the same, and Fig. 2 is a front view showing the electrode wire used in the above. It is. 1... Base body, 3... Insertion hole, 4... Electrode wire.
Claims (1)
この挿入孔に白金族から成る一つ又は複数の細
長い線材の電極線を挿入し、前記基体をプレス
して前記基体と前記電極線とを結合したことを
特徴とする不溶性電極。 ２ 基体は、チタンから成ることを特徴とする実
用新案登録請求の範囲第１項記載の不溶性電
極。 ３ 基体は、その表面に絶縁被膜が施されたこと
を特徴とする実用新案登録請求の範囲第１項又
は第２項記載の不溶性電極。[Claims for Utility Model Registration] 1. An insertion hole is formed in a base made of malleable metal,
An insoluble electrode characterized in that one or more elongated electrode wires made of a platinum group metal are inserted into the insertion hole, and the base body is pressed to bond the base body and the electrode wires. 2. The insoluble electrode according to claim 1, wherein the substrate is made of titanium. 3. The insoluble electrode according to claim 1 or 2 of the utility model registration, characterized in that the substrate has an insulating coating applied to its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984160824U JPH0516220Y2 (en) | 1984-10-24 | 1984-10-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984160824U JPH0516220Y2 (en) | 1984-10-24 | 1984-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178868U JPS6178868U (en) | 1986-05-26 |
| JPH0516220Y2 true JPH0516220Y2 (en) | 1993-04-28 |
Family
ID=30718738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984160824U Expired - Lifetime JPH0516220Y2 (en) | 1984-10-24 | 1984-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516220Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917897Y2 (en) * | 1980-04-09 | 1984-05-24 | ジヤパツクス化成株式会社 | Electrode rod holder for electroforming processing |
-
1984
- 1984-10-24 JP JP1984160824U patent/JPH0516220Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6178868U (en) | 1986-05-26 |
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