JPS5921396B2 - Electrolytic coloring method for aluminum and aluminum alloys - Google Patents
Electrolytic coloring method for aluminum and aluminum alloysInfo
- Publication number
- JPS5921396B2 JPS5921396B2 JP4167576A JP4167576A JPS5921396B2 JP S5921396 B2 JPS5921396 B2 JP S5921396B2 JP 4167576 A JP4167576 A JP 4167576A JP 4167576 A JP4167576 A JP 4167576A JP S5921396 B2 JPS5921396 B2 JP S5921396B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- electrolytic
- sulfuric acid
- film
- electrolysis
- 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
Links
- 238000000034 method Methods 0.000 title claims description 45
- 238000004040 coloring Methods 0.000 title claims description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 15
- 229910052782 aluminium Inorganic materials 0.000 title claims description 14
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 54
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 9
- 150000007524 organic acids Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 5
- 238000005868 electrolysis reaction Methods 0.000 description 21
- 239000000463 material Substances 0.000 description 12
- 238000007796 conventional method Methods 0.000 description 9
- 238000005406 washing Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 description 3
- 239000010407 anodic oxide Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 1
- DIZBQMTZXOUFTD-UHFFFAOYSA-N 2-(furan-2-yl)-3h-benzimidazole-5-carboxylic acid Chemical compound N1C2=CC(C(=O)O)=CC=C2N=C1C1=CC=CO1 DIZBQMTZXOUFTD-UHFFFAOYSA-N 0.000 description 1
- SDGNNLQZAPXALR-UHFFFAOYSA-N 3-sulfophthalic acid Chemical compound OC(=O)C1=CC=CC(S(O)(=O)=O)=C1C(O)=O SDGNNLQZAPXALR-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- -1 aromatic sulfonic acids Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229940044654 phenolsulfonic acid Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Electrochemical Coating By Surface Reaction (AREA)
Description
【発明の詳細な説明】
本発明はアルミニウムおよびアルミニウム合金の電解発
色方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for electrolytically coloring aluminum and aluminum alloys.
本発明によれは電解発色法において従来の１段電解法を
２段電解法とし、１次電解処理で多孔質皮膜を生成させ
、次いで有機酸と硫酸との混合水溶液を用いる２次電解
処理により発色皮膜を生成させることを特徴とする。ア
ルミニウムおよびアルミニウム合金の陽極酸化皮膜の着
色には染色法、電解発色法、電解着色法等がある。性能
面では染色法＜電解着色法＜電解発色法の順で次第に良
くなり、コストの面では、電解発色法＞電解着色法＞染
色法の順で次第に安価になることは既に知られている。
このように電解発色法は皮膜性能が非常によい反面コス
トの高いことであまり使用されず、生産性がよく、作業
管理の容易な、しかもコストの比較的安い浅田法などの
電解着色法が現在最も盛んに使用されている。従来の有
機酸による電解発色法はスルホサリチル酸を使用するカ
ルカラー法、Ｐ−フェノールスルホン酸の水溶液を用い
るスミトーン法、スルホサリチル酸、マレイン酸水溶液
のフエロキサール法、スルホフタル酸の水溶液を用いる
デユラノデイク３００法、等が知られている。According to the present invention, in the electrolytic coloring method, the conventional one-stage electrolytic method is changed to a two-stage electrolytic method, in which a porous film is generated in the first electrolytic treatment, and then a second electrolytic treatment using a mixed aqueous solution of an organic acid and sulfuric acid is performed. It is characterized by producing a colored film. Coloring of anodic oxide films of aluminum and aluminum alloys includes dyeing methods, electrolytic coloring methods, electrolytic coloring methods, and the like. It is already known that in terms of performance, the order of dyeing method <electrolytic coloring method<electrolytic coloring method> gradually improves, and in terms of cost, the order of electrolytic coloring method>electrolytic coloring method>dying method gradually becomes cheaper.
As described above, although the electrolytic coloring method has very good film performance, it is not used much because of its high cost.Currently, electrolytic coloring methods such as the Asada method, which has good productivity, easy work management, and is relatively cheap, are used. Most widely used. Conventional electrolytic coloring methods using organic acids include the Calcolor method using sulfosalicylic acid, the Sumitone method using an aqueous solution of P-phenolsulfonic acid, the Feroxal method using an aqueous solution of sulfosalicylic acid and maleic acid, and the Duranodike 300 method using an aqueous solution of sulfophthalic acid. It has been known.
これらの方法はいずれも硫酸を０．５％程度添加するこ
とを特徴にしている。使用する有機酸は非常に高価であ
る。又発色させるには高い電解電圧を必要とし、更に１
５μ以上の厚い皮膜を必要とするために長時間門 が必
要とされる等の欠点がある。しかしながら、電解発色法
は電解着色法で使用しているニッケル、セシウム、銅な
どの重金属を用いない無公害的な方法である。All of these methods are characterized by adding about 0.5% of sulfuric acid. The organic acids used are very expensive. In addition, high electrolytic voltage is required to develop color, and 1
It has drawbacks such as requiring a thick film of 5μ or more and requiring a long gate. However, the electrolytic coloring method is a non-polluting method that does not use heavy metals such as nickel, cesium, and copper that are used in the electrolytic coloring method.
本発明は電解発色法の利点を生かししかも電解フ 発色
法の生産コストを低減しようとするものである。The present invention aims to take advantage of the advantages of the electrolytic coloring method and to reduce the production cost of the electrolytic coloring method.
すなわち１次電解では硫酸水溶液中で陽極酸化皮膜とし
て従来の１段電解発色法では得られない透明な光沢のあ
る硫酸皮膜を生成させ、次いで水洗するかあるいはその
まゝ２次電解処理で有機５ 酸と硫酸との混合水溶液中
で皮膜性能の優れた発色皮膜を生成させる方法である。
１次電解を硫酸水溶液中で行なうことにより、高価な有
機酸の消費量は少なくなり、高い電圧を必要としないの
で電力量も少なくなる。That is, in the primary electrolysis, a transparent and glossy sulfuric acid film that cannot be obtained with the conventional one-step electrolytic coloring method is produced as an anodized film in an aqueous sulfuric acid solution, and then it is washed with water or directly treated with organic 5 in a secondary electrolytic treatment. This method produces a colored film with excellent film performance in a mixed aqueous solution of acid and sulfuric acid.
By performing the primary electrolysis in an aqueous sulfuric acid solution, the amount of expensive organic acid consumed is reduced, and since high voltage is not required, the amount of electric power is also reduced.
又従来法では、電解初期にピツトやヤケが発生しやすく
それを抑える手段として電圧を時間をかけて徐々に上昇
させる等の手段が講じられている。一方本発明によれは
１次電解処理で下地的皮膜が均一に生成しているので２
次電解にて高い電圧をかけても何等影響はなく、皮膜形
成が極めて均一な発色皮膜が生成でき、従つて、処理時
間は短縮される。このように電力量の低減、処理時間の
短縮、芳香族スルホン酸の使用量の減少が低コストを可
能にする。従来の電解発色法は１段電解法であり本発明
は２段電解法である。Furthermore, in the conventional method, pitting and discoloration are likely to occur in the early stages of electrolysis, and as a means to suppress this, measures such as gradually increasing the voltage over time are taken. On the other hand, according to the present invention, the underlying film is uniformly formed in the primary electrolytic treatment, so 2
Even if a high voltage is applied in the subsequent electrolysis, there is no effect, and an extremely uniform colored film can be formed, so that the processing time is shortened. Thus, the reduction in power consumption, processing time, and amount of aromatic sulfonic acid used enable lower costs. The conventional electrolytic coloring method is a one-stage electrolytic method, and the present invention is a two-stage electrolytic method.
通常の２段電解法は１次電解処理と２次電解処理の間に
水洗工程を設けなけれはならなく全体の処理時間が長く
なる。しかし２段電解法を採用しても上記利点は１段電
解法よりも長い処理時間を相殺して余りあり、しかも本
発明は、１次電解液の硫酸濃度を通常と同じか通常より
も若干低くし又２次電解液の硫酸濃度を通常より高くす
ることによつて１次電解後直接（水洗せず）２次電解液
に移すこともでき、また水洗したとしても通常より遥る
かに少い水量で済み全体の処理時間が長くなることを防
ぐことができる。カルカラー法、スミトーン法などの従
来法では、電解液中の溶存アルミニウム量が色調に大き
な影響を与え１ｔ／ｔをこえると色ムラが発生しやすく
、フイルタ一除去等による液管理を厳密にする必要があ
るが本発明は２次電解液の硫酸濃度が高いために溶存ア
ルミニウム量の影響はほとんどなく、一般の硫酸法とな
んら差はない。本発明によれば、着色用の金属塩を用い
ないので、廃液処理設備の規模は小さくてよく、更に電
解液が有機酸と硫酸の混合水溶液のみであるため、電解
液の回収が極めて容易で、回収効率も９０％以上である
。また比較的高い電圧・電流を要する発色工程も短い電
解時間ですみ、１次電解槽を複数にすることによつて、
生産時間バランスが整う。よつて電源設備の容量が小容
量でよく、冷却装置、液循環系など設備投資が低減でき
る。なお更に、電解条件（電圧・電流）管理が簡単で、
しかも電流効率、電流均一性がよい。また溶存アルミニ
ウム量など電解液組成の管理巾に余裕がある。処理する
アルミニウム材質の影響もなく、色合せが容易で、処理
歩留は普通の銀白色の硫酸法に匹敵する。本発明で用い
られる好ましい有機酸は芳香族スルホン酸である。濃度
は従来のものと変りがない。本発明の１次電解において
用いられる液の硫酸濃度は従来の陽極酸化処理で用いら
れるものとほぼ同じか若干低く、１００〜３００ｆ／ｔ
程度が用いられる。また２次電解において用いられる液
の硫酸濃度は１０〜１００ｔ／ｔと比較的高濃度のもの
が用いられる。有機酸電解にとつて、硫酸の存在は重要
で、１〜３ｒ／ｔでは陽極皮膜の生成上、ピツト、焼け
などの皮膜欠陥を生じ、また発色もない。In the usual two-stage electrolytic method, a water washing step must be provided between the primary electrolytic treatment and the secondary electrolytic treatment, which increases the overall treatment time. However, even if the two-stage electrolytic method is adopted, the above advantages more than offset the longer processing time than the one-stage electrolytic method. By lowering the sulfuric acid concentration in the secondary electrolyte and making it higher than usual, it is possible to transfer the sulfuric acid concentration directly to the secondary electrolyte (without washing with water) after the primary electrolysis. Only a small amount of water is required and the overall processing time can be prevented from increasing. In conventional methods such as the Calcolor method and the Sumitone method, the amount of dissolved aluminum in the electrolyte greatly affects the color tone, and if it exceeds 1 t/t, color unevenness tends to occur, so it is necessary to strictly control the solution by removing filters, etc. However, in the present invention, since the sulfuric acid concentration of the secondary electrolyte is high, the amount of dissolved aluminum has almost no effect, and there is no difference from the general sulfuric acid method. According to the present invention, since metal salts for coloring are not used, the scale of the waste liquid treatment equipment can be small.Furthermore, since the electrolyte is only a mixed aqueous solution of organic acid and sulfuric acid, recovery of the electrolyte is extremely easy. , the recovery efficiency is also over 90%. In addition, the color development process, which requires relatively high voltage and current, can be done in a short electrolysis time, and by using multiple primary electrolytic cells,
Production time is balanced. Therefore, the capacity of the power supply equipment can be small, and investment in equipment such as cooling equipment and liquid circulation systems can be reduced. Furthermore, it is easy to manage electrolytic conditions (voltage and current),
Furthermore, current efficiency and current uniformity are good. Additionally, there is ample control over the composition of the electrolyte, including the amount of dissolved aluminum. It is not affected by the aluminum material being treated, color matching is easy, and the processing yield is comparable to the ordinary silver-white sulfuric acid method. Preferred organic acids for use in the present invention are aromatic sulfonic acids. The concentration is the same as the conventional one. The sulfuric acid concentration of the solution used in the primary electrolysis of the present invention is approximately the same or slightly lower than that used in conventional anodizing treatment, and is 100 to 300 f/t.
degree is used. Moreover, the sulfuric acid concentration of the liquid used in the secondary electrolysis is relatively high, 10 to 100 t/t. The presence of sulfuric acid is important for organic acid electrolysis, and at 1 to 3 r/t, film defects such as pits and burns occur due to formation of the anodic film, and no color develops.
硫酸濃度下限は１０ｆ７／ｌ以上で、均一な発色皮膜を
得ることができる。また上限は１００ｆ／ｔで、それ以
上の高い濃度になると有機酸の発色効果はなくなり、硫
酸陽極酸化皮膜と変らなくなり、銀白色皮膜しか得るこ
とはできない。好ましくは硫酸濃度１０〜５０ｆ／ｔで
、濃色な皮膜が均一に容易に得ることができる。本発明
により得られた皮膜の色調は従来法では得られない色調
も呈する。When the lower limit of the sulfuric acid concentration is 10 f7/l or more, a uniform colored film can be obtained. Further, the upper limit is 100 f/t, and if the concentration is higher than that, the coloring effect of the organic acid disappears, and it becomes no different from a sulfuric acid anodic oxide film, and only a silvery white film can be obtained. Preferably, the sulfuric acid concentration is 10 to 50 f/t, and a uniform, dark-colored film can be easily obtained. The color tone of the film obtained by the present invention also exhibits a color tone that cannot be obtained by conventional methods.
陽極酸化皮膜は、外側が電解初期にできたもので電解の
最後にできた皮膜がアルミニウム側に存在する。すなわ
ち皮膜表面側が光沢のある硫酸皮膜でありその下が発色
皮膜という皮膜構造になつている。よつて色調は硫酸皮
膜を透かして発色皮膜の色調を見ていることになり、フ
イルタ一的効果をあられし、従来のものと違つたパール
状の色調を与えるのである。なお本発明で得られた発色
皮膜の耐食性、耐摩耗は従来の発色皮膜と同等の極めて
優れた性能を示し、また紫外線ウエザーメータ一５００
時間試験で何ら変化を認められず（ＪＩＳクレースケー
ル値５級）耐候性も極めて優れている。マイクロビツカ
ースかたさ試験で３８０Ｈｖと、このように極めて優れ
た諸性能を有する皮膜である建築用内外装その他構造材
料として広い用途が期待できる。以下実施例を挙げて本
発明を更に具体的に説明する。The anodic oxide film is formed on the outside at the beginning of electrolysis, and the film formed at the end of electrolysis is on the aluminum side. That is, the surface side of the film is a shiny sulfuric acid film, and the layer underneath is a colored film. Therefore, the color tone is seen through the sulfuric acid film to see the color tone of the coloring film, creating a filter-like effect and giving a pearl-like color tone different from conventional ones. Furthermore, the corrosion resistance and abrasion resistance of the colored coating obtained by the present invention are equivalent to those of conventional colored coatings, and the corrosion resistance and abrasion resistance of the colored coating obtained by the present invention are extremely excellent.
No change was observed in the time test (JIS clay scale level 5), and the weather resistance is also extremely excellent. With a hardness of 380Hv in the Microvitkers test, this film has extremely excellent performance and can be expected to have a wide range of applications as interior and exterior construction materials and other structural materials. EXAMPLES The present invention will be described in more detail below with reference to Examples.
実施例 １
常法に従つて前処理を行なつた６０６３Ｔ５材を１８０
ｒ／ｔの硫酸水溶液中で浴温２５℃、電流密度１．５Ｖ
ｄイ、電解時間１５分の条件下で直流通電後次の浴組成
の電解液にスルホサリチル酸 ７０ｒ／ｔ
Ｗｌレ臥↓ＶＶ′へ′
上記アルミニウム材を水洗することなく浸漬し浴温１５
℃電流密度３Ａ／ＤＴ！ｆ、電解時間１５分の条件下で
直流通電を行なうと光沢のある美麗なブロンズ色の発色
皮膜が得られる。Example 1 6063T5 material pretreated according to a conventional method was
r/t sulfuric acid aqueous solution, bath temperature 25°C, current density 1.5V
d. After applying direct current under the conditions of electrolysis time of 15 minutes, sulfosalicylic acid was added to the electrolytic solution with the following bath composition at 70 r/t Wl ↓ Go to VV' The above aluminum material was immersed without washing with water and the bath temperature was 15.
°C current density 3A/DT! f. When DC current is applied under the condition that the electrolysis time is 15 minutes, a shiny and beautiful bronze colored film can be obtained.
実施例 ２
常法に従つて前処理を行なつた６０６３−Ｔ５材を１２
０ｔ／ｔの硫酸水溶液中で浴温２５℃、電流密度１．５
Ａ／Ｄｄ、電解時間５分の条件下で直流通電後次の浴組
成の電解液に上記アルミニウム材を水洗することなく浸
漬し浴温１５℃電流密度３ん４Ｐ、電解時間２５分の条
件下で直流通電を行なうと光沢のある濃ブロンズ色の発
色皮膜が得られる。Example 2 12 pieces of 6063-T5 material pretreated according to a conventional method
Bath temperature 25℃, current density 1.5 in 0t/t sulfuric acid aqueous solution
A/Dd, after DC current was applied under the conditions of electrolysis time of 5 minutes, the above aluminum material was immersed without washing in an electrolytic solution having the following bath composition, and the bath temperature was 15°C, the current density was 3-4P, and the electrolysis time was 25 minutes. When DC current is applied, a glossy dark bronze colored film is obtained.
実施例 ３
常法に従つて前処理を行なつた５０５２−０材を１００
ｔ／ｔの硫酸水溶液中で浴温２５℃、電流密度１．５Ａ
／ＤＴｌｆ、電解時間２５分の条件下で直流通電後次の
浴組成の電解液に上記アルミニウム材を水洗することな
く浸漬し浴温１５℃、電流密度３人４ば、電解時間３分
の条件下で直流通電を行なうと光沢のある淡いブロンズ
色の発色皮膜が得られる。Example 3 100 pieces of 5052-0 material pretreated according to a conventional method
Bath temperature 25°C, current density 1.5A in t/t sulfuric acid aqueous solution
/DTlf, after applying direct current under the conditions of electrolysis time of 25 minutes, the above aluminum material was immersed without washing in an electrolytic solution with the following bath composition, bath temperature was 15°C, current density was 3 people, 4 hours, and electrolysis time was 3 minutes. When a direct current is applied at the bottom, a glossy pale bronze colored film is obtained.
実施例 ４
常法に従つて前処理を行なつた１１００Ｈ２４材を１０
０ｒ／ｔの硫酸水溶液中で浴温２５℃、電流密度１．５
Ａ／Ｄｒｌｌ、電解時間２０分の条件下で直流通電後、
次の浴組成の電解液にフエノールスルホン酸 １５０ｔ
／ｔ
上記アルミニウム材を水洗することなく浸漬し浴温１０
℃、電流密度５人／Ｄｒ！ｆ、電解時間５分の条件下で
直流通電を行なうと光沢のあるブロンズ色の発色皮膜が
得られる。Example 4 1100H24 material pretreated according to a conventional method was
Bath temperature 25°C, current density 1.5 in 0 r/t sulfuric acid aqueous solution
A/Drll, after direct current under the conditions of electrolysis time of 20 minutes,
Add 150t of phenolsulfonic acid to the electrolyte with the following bath composition.
/t The above aluminum material was immersed in water without washing at a bath temperature of 10
°C, current density 5 people/Dr! f. When direct current is applied under the conditions of electrolysis time of 5 minutes, a glossy bronze colored film is obtained.
実施例 ５
常法に従つて前処理を行なつた６０６３−Ｔ５材を１２
０ｔ／ｔの硫酸水溶液中で浴温１５℃、電流密度２．０
Ａ／Ｄｄ、電解時間１０分の条件下で直流通電後次の浴
組成の電解液に上記アルミニウム材を水洗することなく
浸漬し浴温１５℃、電流密度２．０１ｙ／Ｄｄ、電解時
間１５分の条件下で直流通電を行なうと光沢のあるアッ
パー色の発色皮膜が得られる。Example 5 12 pieces of 6063-T5 material pretreated according to a conventional method
Bath temperature 15℃, current density 2.0 in 0t/t sulfuric acid aqueous solution
A/Dd, after applying direct current under the conditions of 10 minutes of electrolysis time, the above aluminum material was immersed in an electrolytic solution with the following bath composition without washing with water, and the bath temperature was 15°C, the current density was 2.01y/Dd, and the electrolysis time was 15 minutes. When DC current is applied under these conditions, a glossy upper colored film can be obtained.
なお本発明で得られた発色皮膜と従来のカルカラー法と
称せられる方法と、電解着色法の浅田法と称せられてい
る方法により得られた各々１５μの発色皮膜及び着色皮
膜の性能試験を行なつた結果は表の通りである。Performance tests were conducted on the colored film obtained by the present invention, the conventional method called Calcolor method, and the colored film and colored film each having a thickness of 15μ obtained by a method called the Asada method of electrolytic coloring. The results are shown in the table.
このように優れた性能を示した。Thus, it showed excellent performance.
Claims (1)
００ｇ／ｌの濃度の硫酸水溶液中で１次電解処理にかけ
て多孔質酸化皮膜を生成させ、次いで水洗するかあるい
はそのまま２次電解液である有機酸と１０〜１００ｇ／
ｌの硫酸とを含む混合水溶液に移して２次電解処理にか
け１次電解処理により得た皮膜の下に発色皮膜を生成さ
せることを特徴とする、アルミニウムおよびアルミニウ
ム合金の電解発色方法。1 Aluminum and aluminum alloys from 100 to 3
A porous oxide film is formed by a primary electrolytic treatment in an aqueous sulfuric acid solution with a concentration of 0.00 g/l, and then washed with water or directly mixed with an organic acid as a secondary electrolyte at 10 to 100 g/l.
1. A method for electrolytically coloring aluminum and aluminum alloys, which comprises transferring the mixture to a mixed aqueous solution containing 1 ml of sulfuric acid and subjecting it to a secondary electrolytic treatment to form a colored film under the film obtained by the primary electrolytic treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4167576A JPS5921396B2 (en) | 1976-04-13 | 1976-04-13 | Electrolytic coloring method for aluminum and aluminum alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4167576A JPS5921396B2 (en) | 1976-04-13 | 1976-04-13 | Electrolytic coloring method for aluminum and aluminum alloys |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52124443A JPS52124443A (en) | 1977-10-19 |
| JPS5921396B2 true JPS5921396B2 (en) | 1984-05-19 |
Family
ID=12614977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4167576A Expired JPS5921396B2 (en) | 1976-04-13 | 1976-04-13 | Electrolytic coloring method for aluminum and aluminum alloys |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921396B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346584U (en) * | 1986-09-11 | 1988-03-29 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6132621Y2 (en) * | 1979-12-11 | 1986-09-22 |
-
1976
- 1976-04-13 JP JP4167576A patent/JPS5921396B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346584U (en) * | 1986-09-11 | 1988-03-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52124443A (en) | 1977-10-19 |
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