JPH08283990A - Aluminum material - Google Patents

Aluminum material

Info

Publication number
JPH08283990A
JPH08283990A JP8849795A JP8849795A JPH08283990A JP H08283990 A JPH08283990 A JP H08283990A JP 8849795 A JP8849795 A JP 8849795A JP 8849795 A JP8849795 A JP 8849795A JP H08283990 A JPH08283990 A JP H08283990A
Authority
JP
Japan
Prior art keywords
coating
oxide film
film
aluminum
anodic oxide
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.)
Pending
Application number
JP8849795A
Other languages
Japanese (ja)
Inventor
Keitaro Yamaguchi
恵太郎 山口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MA Aluminum Corp
Original Assignee
Mitsubishi Aluminum Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Aluminum Co Ltd filed Critical Mitsubishi Aluminum Co Ltd
Priority to JP8849795A priority Critical patent/JPH08283990A/en
Publication of JPH08283990A publication Critical patent/JPH08283990A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To produce an aluminum material excellent in coating film adhesion and corrosion resistance after coating with good productivity by forming a nonporous anodic oxide film with the thickness, water content and anion content specified on the surface of the Al material. CONSTITUTION: Al or Al alloy is pretreated to clean its surface and then electrolyzed in an electrolytic bath of boric acid, an adipate, etc., to form a nonporous anodic oxide film having 70-2000μm diameter and contg. 1-5wt.% water and 0.1-7wt.% anion on the surface. At this time, the electrolytic bath is controlled to 15-50 deg.C, the current density to 1-20A/dm<2> in DC electrolysis, the electrolyzing time to several sec to 10min and the voltage to be impressed to 5-140V. An Al material appropriately used for the electric appliance, utensil, ornament, etc., is obtained in this way.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、電気製品、器物、装
飾品、建材、自動車部品、フィン材などの用途に好適な
塗膜密着性、塗装後耐食性に優れるアルミニウム材とそ
の製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum material having excellent coating adhesion and corrosion resistance after coating, which is suitable for applications such as electric appliances, articles, ornaments, building materials, automobile parts and fin materials, and a method for producing the same.

【0002】[0002]

【従来の技術】アルミニウム材やアルミニウム合金材に
塗装を施す場合には、塗膜の密着性を高めるため、塗装
下地処理が行われる。このような塗装下地処理として
は、クロメート処理、ベーマイト処理などの化学皮膜処
理や多孔質陽極酸化処理などが施されている。
2. Description of the Related Art When coating an aluminum material or an aluminum alloy material, a coating base treatment is performed in order to enhance the adhesion of the coating film. As such a coating base treatment, chromate treatment, boehmite treatment or other chemical film treatment, or porous anodization treatment is performed.

【0003】クロメート処理では、塗膜密着性、塗装後
耐食性に優れた性能を示すが、処理の際のクロム含有排
水が環境汚染につながり、排水処理にコストを要する欠
点があり、食品関係の用途にはクロムが人体に有害であ
ることから、使用できない問題がある。また、ベーマイ
ト処理では、塗装後耐食性に富んだ皮膜が得られるが、
皮膜の含水量が高く、焼付け塗装の場合に皮膜からの水
分の揮散によって塗膜密着性が劣る場合がある。
The chromate treatment exhibits excellent performances in coating film adhesion and corrosion resistance after coating, but the chromium-containing wastewater during treatment leads to environmental pollution, and there is a drawback in that wastewater treatment is costly. Has a problem that it cannot be used because chromium is harmful to the human body. Also, with boehmite treatment, a film with high corrosion resistance can be obtained after painting,
The water content of the coating is high, and in the case of baking coating, the adhesion of the coating may be poor due to the evaporation of water from the coating.

【0004】多孔質陽極酸化処理では、焼付け塗装を行
う場合に皮膜からの水分の揮散によって塗膜密着性が低
下することがあり、この対策として封孔処理を行わない
などの方策がとられるが、封孔処理を行わないと耐食性
が不十分となる。また、均一な酸化皮膜を得るには脱
脂、エッチング、デスマット、電解、封孔の複数の処理
が必要となり、コストが高くなる。さらに、通常厚さ1
0μm程度の酸化皮膜を形成する場合が一般的である
が、この程度の厚みの酸化皮膜の形成に30分程度の電
解処理時間を要し、生産性に劣る。さらに、厚さ1μm
以下の薄い皮膜を均一に形成することが困難であるた
め、必然的に厚膜となり、成形加工前に陽極酸化処理を
施した場合には成形性が低下してしまう不都合がある。
In the porous anodic oxidation treatment, when baking coating is carried out, vaporization of water from the coating may lower the adhesion of the coating film. As a countermeasure against this, a measure such as not performing the sealing treatment may be taken. If the sealing treatment is not performed, the corrosion resistance will be insufficient. Further, in order to obtain a uniform oxide film, a plurality of treatments such as degreasing, etching, desmutting, electrolysis, and sealing are required, which increases the cost. In addition, usually thickness 1
Generally, an oxide film having a thickness of about 0 μm is formed, but it takes about 30 minutes for electrolytic treatment to form an oxide film having such a thickness, resulting in poor productivity. Furthermore, the thickness is 1 μm
Since it is difficult to form the following thin film uniformly, it necessarily becomes a thick film, and if anodizing treatment is performed before the forming process, there is a disadvantage that the formability deteriorates.

【0005】[0005]

【発明が解決しようとする課題】よって、本発明におけ
る課題は、塗膜密着性、塗装後耐食性の優れたアルミニ
ウム材を生産性よく低コストで得ることにある。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to obtain an aluminum material having excellent coating film adhesion and corrosion resistance after coating with high productivity and at low cost.

【0006】[0006]

【課題を解決するための手段】かかる課題は、厚みが7
0〜2000Å、含水量が1〜5重量%、アニオン含有
量が0.1〜7重量%である無孔質陽極酸化皮膜をアル
ミニウムまたはアルミニウム合金の表面に形成すること
により解決できる。また、陽極酸化皮膜の空孔率が5%
以下であるとより好ましい。
[Means for Solving the Problems] The problem is that the thickness is 7
The problem can be solved by forming a non-porous anodic oxide film having a water content of 0 to 2000, a water content of 1 to 5% by weight, and an anion content of 0.1 to 7% by weight on the surface of aluminum or an aluminum alloy. The porosity of the anodized film is 5%.
The following is more preferable.

【0007】本発明のアルミニウム材は、アルミニウム
またはアルミニウム合金の表面に厚み70〜2000
Å、含水量1〜5重量%、アニオン含有量0.1〜7重
量%、空孔率5%以下の無孔質の陽極酸化皮膜を形成し
たものである。以下、このような陽極酸化皮膜を形成す
る方法により、この発明を詳しく説明する。本発明の特
徴とするところは、良好な塗膜密着性を得るために陽極
酸化皮膜として多孔質のものを形成し、微細孔での塗膜
のアンカー効果でかかる密着性を得ていた従来の考え方
とは異なり、無孔質の比較的薄膜の陽極酸化皮膜でも十
分な塗膜密着性が得られ、しかも無孔質皮膜であること
から薄膜でも良好な塗装後耐食性が得られる点にある。
The aluminum material of the present invention has a thickness of 70 to 2000 on the surface of aluminum or an aluminum alloy.
Å, a non-porous anodic oxide film having a water content of 1 to 5% by weight, anion content of 0.1 to 7% by weight, and a porosity of 5% or less is formed. The present invention will be described in detail below by the method for forming such an anodized film. The feature of the present invention is that in order to obtain good coating adhesion, a porous anodic oxide coating is formed, and the adhesion is obtained by the anchor effect of the coating in the fine pores. In contrast to the idea, a non-porous, relatively thin anodic oxide film can provide sufficient coating adhesion, and since it is a non-porous film, good thin film corrosion resistance can be obtained.

【0008】本発明のアルミニウム材の素材となるアル
ミニウムまたはアルミニウム合金としては、特に限定さ
れず、純アルミ系の1000系合金、Al−Cu系、A
l−Cu−Mg系の2000系合金、Al−Mn系の3
000系合金、Al−Si系の4000系合金、Al−
Mg系の5000系合金、Al−Mg−Si系の600
0系合金、Al−Zn−Mg−Cu系、Al−Zn−M
g系の7000系合金、Al−Fe−Mn系の8000
系合金などが用いられ、成形用合金、構造用合金、電気
用合金、AC1A,AC2A,AC3A,AC4Bなど
の鋳造用合金が用いられる。
The aluminum or aluminum alloy used as the material of the aluminum material of the present invention is not particularly limited, and is a pure aluminum 1000 series alloy, Al--Cu series, A
2000-based alloy of 1-Cu-Mg system, 3 of Al-Mn system
000 series alloy, Al-Si series 4000 series alloy, Al-
Mg-based 5000-based alloy, Al-Mg-Si-based 600
0-based alloy, Al-Zn-Mg-Cu-based, Al-Zn-M
g-based 7000 series alloy, Al-Fe-Mn-based 8000
A system alloy or the like is used, and a molding alloy, a structural alloy, an electric alloy, or a casting alloy such as AC1A, AC2A, AC3A, or AC4B is used.

【0009】また、これらの合金に溶体化処理、時効処
理などの種々の調質処理を施したものも用いられる。さ
らに、これらのアルミニウム合金を表面にクラディング
したクラッド材も使用できる。また、予めプレス成形加
工などを施した加工材のものであってもよく、未加工の
板材、押出材、鋳造品であってもよい。本発明にあって
は、これらの合金のなかでも、5000系合金および6
000系合金以外の合金が好ましい。
Further, those alloys that have undergone various heat treatments such as solution treatment and aging treatment are also used. Further, a clad material having the surface of these aluminum alloys clad can be used. Further, it may be a processed material that has been subjected to press molding or the like in advance, or may be an unprocessed plate material, extruded material, or cast product. In the present invention, among these alloys, 5000 series alloy and 6 alloy
Alloys other than 000 series alloys are preferred.

【0010】このような素材に対して前処理が施され
る。この前処理としては特に限定されず、要は素材の表
面に付着した油脂分を除去し、素材表面の不均質な酸化
物皮膜が除去できるものであればよい。例えば、弱アル
カリ性の脱脂液による脱脂処理を施したのち、水酸化ナ
トリウム水溶液でアルカリエッチングをしたのち、硝酸
水溶液中でデスマット処理を行う方法や脱脂処理後に酸
洗浄を行う方法などが適宜選択して用いられる。
Pretreatment is applied to such a material. The pretreatment is not particularly limited as long as it can remove the oil and fat adhering to the surface of the material and remove the heterogeneous oxide film on the material surface. For example, after performing a degreasing treatment with a weak alkaline degreasing liquid, after performing alkali etching with an aqueous sodium hydroxide solution, a method of performing desmutting treatment in a nitric acid aqueous solution, a method of performing acid cleaning after the degreasing treatment, etc. are appropriately selected. Used.

【0011】ついで、この前処理が施された素材を電解
浴中で電解して無孔質陽極酸か皮膜を形成する。電解浴
としては、生成する陽極酸化皮膜を溶解しにくく、かつ
無孔質の陽極酸化皮膜を生成する電解質であるホウ酸、
ホウ酸塩、リン酸塩、アジピン酸塩、フタル酸塩、安息
香酸塩、酒石酸塩、クエン酸塩などの群から選ばれる1
種または2種以上を溶解した水溶液が用いられる。これ
らの電解質のなかでもホウ酸、アジピン酸塩、フタル酸
塩が酸化皮膜の性状、コストなどの点で好ましい。
Then, the pretreated material is electrolyzed in an electrolytic bath to form a non-porous anodic acid or a film. As the electrolytic bath, boric acid, which is an electrolyte that hardly dissolves the anodic oxide film to be produced, and produces a non-porous anodic oxide film,
Selected from the group of borate, phosphate, adipate, phthalate, benzoate, tartrate, citrate, etc. 1
An aqueous solution in which one kind or two or more kinds are dissolved is used. Among these electrolytes, boric acid, adipic acid salt, and phthalic acid salt are preferable in terms of the properties of the oxide film, cost, and the like.

【0012】電解浴中の電解質濃度は2重量%からその
電解質の飽和濃度の範囲で選ばれる。電解浴の浴温は1
5〜50℃の範囲で十分であり、浴温を50℃以上の高
温とする必要はない。
The electrolyte concentration in the electrolytic bath is selected in the range of 2% by weight to the saturated concentration of the electrolyte. Bath temperature of electrolysis bath is 1
The range of 5 to 50 ° C is sufficient, and the bath temperature does not need to be as high as 50 ° C or higher.

【0013】この電解浴中で、アルミニウム素材は、連
続あるいは断続であっても陽極となるように電源に接続
されて電解される。陰極には不溶性の導電材料が用いら
れる。電解電流は、直流電流が用いられ、直流電解では
直流密度1〜20A/dm2程度、電解時間数秒〜10
分程度で電解が行われる。
In this electrolytic bath, the aluminum material is electrolyzed by being connected to a power source so as to serve as an anode whether continuous or intermittent. An insoluble conductive material is used for the cathode. A direct current is used as the electrolysis current. In the direct current electrolysis, the direct current density is about 1 to 20 A / dm 2 , and the electrolysis time is several seconds to 10 seconds.
Electrolysis is performed in about a minute.

【0014】印加電圧は、直流電流では、電圧1Vに対
して形成される酸化皮膜厚さが約14Åとなる関係があ
ることから約5〜140V、好ましくは約20〜50V
の範囲とされる。電源装置などの点からは50V以下と
することが好ましく、このような低電圧での電解でも優
れた塗膜密着性と塗装後耐食性が得られる。この電解に
よってアルミニウム素材表面に厚さ70〜2000Å、
好ましくは300〜700Åの均一な無孔質の陽極酸化
皮膜が形成される。
The applied voltage is about 5 to 140 V, preferably about 20 to 50 V, because there is a relationship that the thickness of the oxide film formed is about 14 Å against a voltage of 1 V under direct current.
Range. From the standpoint of a power supply device, it is preferably 50 V or less, and excellent electrocoat adhesion and post-coating corrosion resistance can be obtained even by electrolysis at such a low voltage. The thickness of 70 ~ 2000Å on the surface of aluminum material by this electrolysis,
Preferably, a uniform non-porous anodic oxide film of 300 to 700 Å is formed.

【0015】このようにして得られた陽極酸化皮膜は無
孔質であり、その空孔率は最大でも5%以下であり、通
常は2%以下となっている。また、皮膜の含水量は1〜
5重量%、通常は1〜3重量%と極めて低い値を示す。
さらに酸化皮膜のアニオン含有量は0.1〜7重量%、
通常は1〜5重量%と低い値となっている。一方、通常
の硫酸浴、シュウ酸浴で得られた多孔質の陽極酸化皮膜
は、空孔率が5〜60%と非常に高く、含水量は封孔処
理後で15重量%程度、アニオン含有量は12〜15重
量%程度である。
The anodic oxide film thus obtained is non-porous, and its porosity is 5% or less at maximum, and usually 2% or less. In addition, the water content of the film is 1 to
It shows an extremely low value of 5% by weight, usually 1 to 3% by weight.
Furthermore, the anion content of the oxide film is 0.1 to 7% by weight,
Usually, the value is as low as 1 to 5% by weight. On the other hand, the porous anodic oxide film obtained by a normal sulfuric acid bath or oxalic acid bath has a very high porosity of 5 to 60%, the water content is about 15% by weight after the sealing treatment, and the anion content is included. The amount is about 12 to 15% by weight.

【0016】このため、本発明のアルミニウム材にあっ
ては、その陽極酸化皮膜は無孔質にもかかわらず塗膜密
着性が優れたものとなる。これは皮膜から揮散する水
分、アニオンが格段に微かなものとなり、焼付塗装時に
おいて、水分、アニオンによる塗膜の剥離がなくなるた
めである。また、無孔質であるので、塗装後耐食性も良
好なものとなる。
Therefore, in the aluminum material of the present invention, the anodic oxide coating has excellent coating adhesion even though it is non-porous. This is because the water and anions volatilized from the film become remarkably fine, and the coating film is not peeled off by the water and anions during baking coating. Further, since it is non-porous, it has good corrosion resistance after painting.

【0017】本発明での陽極酸化皮膜において、その含
水量が5重量%を越えると、またアニオン含有量が7重
量%を越えると塗膜密着性が低下する。含水量が1重量
%未満もしくはアニオン含有量が0.1重量%未満のも
のは、化成することができない。また、空孔率が5%以
上となると無孔質皮膜とは言えなくなる。さらに、酸化
皮膜の厚さが2000Åを越えるものは無用の厚さとな
り、高電圧の電源装置が必要となってくる。また、成形
性が低下し、皮膜の割れなどが発生する。70Å未満で
は耐食性が得られなくなる。
In the anodic oxide coating of the present invention, when the water content thereof exceeds 5% by weight, and when the anion content exceeds 7% by weight, the adhesion of the coating film decreases. If the water content is less than 1% by weight or the anion content is less than 0.1% by weight, chemical conversion cannot be performed. Further, when the porosity is 5% or more, it cannot be said to be a non-porous coating. Furthermore, if the thickness of the oxide film exceeds 2000 liters, the thickness becomes useless, and a high-voltage power supply device is required. In addition, the moldability is deteriorated and the film is cracked. If it is less than 70Å, corrosion resistance cannot be obtained.

【0018】また、本発明の陽極酸化皮膜の形成にあっ
ては、従来の無孔質陽極酸化皮膜の形成のための電解浴
の浴温が80〜90℃であるのに対し、50℃以下と低
温であることから、浴管理が容易となる。さらに、印加
電圧が従来では300〜400Vであるのに対し、本発
明では140V以下、通常は50V以下でよいので、電
源装置などの設備の点でも有利となる。また、酸化皮膜
溶解性の低い電解質を用いているので、電解中の皮膜の
溶解が少なく、電流効率もよくなる。以上の陽極酸化処
理は、コイル状などの未加工の状態のアルミニウムまた
はアルミニウム合金に対して行うこともでき、またプレ
ス加工などの加工を施した後のものに対しても行うこと
ができる。
Further, in forming the anodic oxide film of the present invention, the bath temperature of the conventional electrolytic bath for forming the non-porous anodic oxide film is 80 to 90 ° C., whereas it is 50 ° C. or less. Because of the low temperature, bath management becomes easy. Further, the applied voltage is 300 to 400 V in the related art, but 140 V or less, usually 50 V or less in the present invention, which is advantageous in terms of equipment such as a power supply device. Further, since an electrolyte having a low oxide film solubility is used, the film is less likely to be dissolved during electrolysis and current efficiency is improved. The above anodic oxidation treatment can be performed on unprocessed aluminum or aluminum alloy such as a coil, or can be performed on the aluminum or aluminum alloy after being subjected to processing such as pressing.

【0019】このような無孔質陽極酸化皮膜が形成され
たアルミニウム材の表面に塗布される塗料としては、分
子内に極性基を有する樹脂を用いた塗料が用いられる。
この極性基を有する樹脂を用いた塗料は、陽極酸化皮膜
の酸化アルミニウムと極性基とが水素結合するため、無
孔質の酸化皮膜であっても優れた塗膜密着性を発揮す
る。このような塗料としては、カチオン電着塗装法や吹
付け塗装、ロールコーター法による熱可塑性アクリル樹
脂系塗料、熱硬化性アクリル樹脂系塗料、エポキシ樹脂
系塗料、ポリウレタン樹脂系塗料、ポリエステル樹脂系
塗料、ポリアミド樹脂系塗料などが用いられる。また、
必要に応じて下塗り、中塗り、上塗りなどの多層塗装を
施すこともできる。
As the paint applied to the surface of the aluminum material having such a non-porous anodic oxide film formed thereon, a paint using a resin having a polar group in its molecule is used.
A coating material using this resin having a polar group exhibits excellent coating adhesion even with a non-porous oxide film because aluminum oxide of the anodized film and the polar group are hydrogen-bonded. Examples of such paints are thermoplastic acrylic resin paints, thermosetting acrylic resin paints, epoxy resin paints, polyurethane resin paints, polyester resin paints by cationic electrodeposition coating method, spray coating method, roll coater method. Polyamide resin-based paint is used. Also,
If necessary, a multi-layer coating such as an undercoat, an intermediate coat and a top coat can be applied.

【0020】以下、具体例を示す。 (実施例)アルミニウム合金としてJIS1050合金
を用い、10%水酸化ナトリウム水溶液で50℃、60
秒のエッチングを行い、市水で水洗したのち、30%硝
酸水溶液でデスマットを60秒間行い、市水および純水
で洗浄して前処理した。この前処理後の合金を、表1に
示す電解浴中で浴温50℃、電流密度1A/dm2 (直
流)、5分間電解し、水洗および乾燥して陽極酸化皮膜
を化成した。
Specific examples will be shown below. (Example) A JIS1050 alloy was used as an aluminum alloy, and it was treated with a 10% sodium hydroxide aqueous solution at 50 ° C and 60 ° C.
After etching for 2 seconds and washing with city water, desmutting was performed with a 30% nitric acid aqueous solution for 60 seconds, followed by washing with city water and pure water for pretreatment. The alloy after this pretreatment was electrolyzed in the electrolytic bath shown in Table 1 at a bath temperature of 50 ° C. and a current density of 1 A / dm 2 (direct current) for 5 minutes, washed with water and dried to form an anodized film.

【0021】次いで、このものの表面にエポキシ樹脂系
のカチオン電着塗装を乾燥膜厚で20μm施したのち、
上塗りを30μm施した。各塗装後に150℃の焼付け
処理を各々15分間行って、厚さ50μmの塗膜を形成
した。
Then, an epoxy resin-based cationic electrodeposition coating was applied to the surface of this product at a dry film thickness of 20 μm,
A top coat of 30 μm was applied. After each coating, baking treatment at 150 ° C. was performed for 15 minutes to form a coating film having a thickness of 50 μm.

【0022】得られた陽極酸化皮膜の含水量を熱重量分
析によって測定し、アニオン含有量をXPSによって測
定した。また、塗装後の試料に2mmの碁盤目を100
個切り、セロハンテープで剥離し、残った塗膜の個数を
計数する“ゴバン目テスト”によって塗膜密着性を測定
した。さらに、塗装試料表面に素地まで達するクロスカ
ットを入れ、下記条件の複合サイクル腐食試験を35サ
イクル行ったのち、クロスカットからの最大腐食長さを
測定し、塗装後耐食性を評価した。最大腐食長さが3m
mを越えるものを不良(×)、0.5〜3.0mのもの
を良(○)、0〜0.5mmのものを秀(◎)とした。 塩水噴霧 35℃で2時間 乾燥 60℃で4時間 湿潤 40℃,95%RHで2時間 結果を表1に示す。
The water content of the obtained anodized film was measured by thermogravimetric analysis, and the anion content was measured by XPS. In addition, 100 mm of 2 mm grids on the sample after painting.
The film was cut into pieces, peeled off with a piece of cellophane tape, and the adhesion of the coating film was measured by a "goose-eye test" in which the number of remaining coating films was counted. Further, a cross-cut reaching the substrate was put on the surface of the coated sample, and a combined cycle corrosion test under the following conditions was performed for 35 cycles. Then, the maximum corrosion length from the cross-cut was measured to evaluate the corrosion resistance after coating. Maximum corrosion length is 3m
Those exceeding m were evaluated as bad (x), those having 0.5 to 3.0 m were evaluated as good (◯), and those having 0 to 0.5 mm were evaluated as excellent (⊚). Salt spray: 2 hours at 35 ° C. Dry: 4 hours at 60 ° C. Wet: 2 hours at 40 ° C., 95% RH The results are shown in Table 1.

【0023】[0023]

【表1】 [Table 1]

【0024】[0024]

【発明の効果】以上説明したように、この発明のアルミ
ニウム材にあっては、塗膜密着性、塗装後耐食性に極め
て優れ、電気製品、器物、装飾品建材などの塗装を施す
アルミニウム製品に好適なものとなる。
As described above, the aluminum material of the present invention is extremely excellent in coating film adhesion and corrosion resistance after coating, and is suitable for aluminum products to be coated such as electric appliances, articles and decorative building materials. It will be

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 アルミニウムまたはアルミニウム合金の
表面に、厚さが70〜2000Å、含水量が1〜5重量
%、アニオン含有量が0.1〜7重量%の無孔質陽極酸
化皮膜を形成したことを特徴とするアルミニウム材。
1. A non-porous anodic oxide coating having a thickness of 70 to 2000 liters, a water content of 1 to 5 wt% and an anion content of 0.1 to 7 wt% is formed on the surface of aluminum or an aluminum alloy. Aluminum material that is characterized.
【請求項2】 無孔質陽極酸化皮膜の空孔率が5%以下
であることを特徴とする請求項1記載のアルミニウム
材。
2. The aluminum material according to claim 1, wherein the non-porous anodic oxide film has a porosity of 5% or less.
【請求項3】 無孔質陽極酸化皮膜の厚さが300〜7
00Åであることを特徴とする請求項1または2記載の
アルミニウム材。
3. The thickness of the non-porous anodic oxide film is 300 to 7
It is 00Å, The aluminum material of Claim 1 or 2 characterized by the above-mentioned.
【請求項4】 請求項1ないし3のいずれかに記載のア
ルミニウム材に塗装を施した塗装アルミニウム材。
4. A coated aluminum material obtained by coating the aluminum material according to any one of claims 1 to 3.
JP8849795A 1995-04-13 1995-04-13 Aluminum material Pending JPH08283990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8849795A JPH08283990A (en) 1995-04-13 1995-04-13 Aluminum material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8849795A JPH08283990A (en) 1995-04-13 1995-04-13 Aluminum material

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2006201074A Division JP2006283193A (en) 2006-07-24 2006-07-24 Method for producing aluminum material for coating, and method for producing aluminum material for coating of coating material using resin having polar group

Publications (1)

Publication Number Publication Date
JPH08283990A true JPH08283990A (en) 1996-10-29

Family

ID=13944463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8849795A Pending JPH08283990A (en) 1995-04-13 1995-04-13 Aluminum material

Country Status (1)

Country Link
JP (1) JPH08283990A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003003296A (en) * 2001-06-25 2003-01-08 Mitsubishi Alum Co Ltd Surface treated aluminum material and aluminum formed body
JP2006026913A (en) * 2004-07-12 2006-02-02 Mitsubishi Alum Co Ltd Heat-resistant aluminum material
JP2006026914A (en) * 2004-07-12 2006-02-02 Mitsubishi Alum Co Ltd Resin coated aluminum material
JP2007016318A (en) * 2000-07-31 2007-01-25 Mitsubishi Plastics Ind Ltd Method for manufacturing aluminum plate with thermoplastic resin coating and formed article comprising the same manufactured by the manufacturing method
JP2009250360A (en) * 2008-04-07 2009-10-29 Panasonic Electric Works Co Ltd Control switch for automatic transmission
US8012333B2 (en) 2001-07-20 2011-09-06 Novelis Inc. Aluminium alloy sheet with roughened surface

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007016318A (en) * 2000-07-31 2007-01-25 Mitsubishi Plastics Ind Ltd Method for manufacturing aluminum plate with thermoplastic resin coating and formed article comprising the same manufactured by the manufacturing method
JP2003003296A (en) * 2001-06-25 2003-01-08 Mitsubishi Alum Co Ltd Surface treated aluminum material and aluminum formed body
US8012333B2 (en) 2001-07-20 2011-09-06 Novelis Inc. Aluminium alloy sheet with roughened surface
JP2006026913A (en) * 2004-07-12 2006-02-02 Mitsubishi Alum Co Ltd Heat-resistant aluminum material
JP2006026914A (en) * 2004-07-12 2006-02-02 Mitsubishi Alum Co Ltd Resin coated aluminum material
JP4667775B2 (en) * 2004-07-12 2011-04-13 三菱アルミニウム株式会社 Resin-coated aluminum material
JP2009250360A (en) * 2008-04-07 2009-10-29 Panasonic Electric Works Co Ltd Control switch for automatic transmission

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