JPH08120490A - Aluminum oxidized film and its production - Google Patents
Aluminum oxidized film and its productionInfo
- Publication number
- JPH08120490A JPH08120490A JP6260189A JP26018994A JPH08120490A JP H08120490 A JPH08120490 A JP H08120490A JP 6260189 A JP6260189 A JP 6260189A JP 26018994 A JP26018994 A JP 26018994A JP H08120490 A JPH08120490 A JP H08120490A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- base material
- siloxane compound
- film
- alumite layer
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Silicon Compounds (AREA)
- Chemically Coating (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はアルミニウム表面に形成
するアルミニウム酸化皮膜、およびその製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum oxide film formed on the surface of aluminum and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、多孔質アルマイト基材を高温蒸気
下に放置あるいは高温熱水下に浸漬することで、アルマ
イト表面をベーマイト化し表面を膨潤させることでアル
マイトの封孔を行い、アルミニウムの耐食性を向上させ
る方法が利用されている。2. Description of the Related Art Conventionally, a porous alumite base material is left under high temperature steam or immersed in high temperature hot water to boehmite the surface of the alumite and swell the surface to seal the alumite, and to improve the corrosion resistance of aluminum. Methods are used to improve.
【０００３】[0003]
【発明が解決しようとする課題】従来の封孔法は、高温
での処理が必要であったこと、また生成したベーマイト
層が疑ベーマイト化することでアルマイト表面から脱落
し耐食性が低下する等の問題があった。また、それを補
うためにベーマイト上に塗装する方法が用いられている
が、高温での焼成、基材感の損失、塗膜の剥離等の問題
があった。The conventional sealing method requires treatment at a high temperature, and the formed boehmite layer becomes pseudo-boehmite, and is removed from the alumite surface to lower corrosion resistance. There was a problem. Further, a method of coating on boehmite is used to compensate for this, but there are problems such as baking at high temperature, loss of feeling of the base material, and peeling of the coating film.
【０００４】本発明はこれらの問題を解決するものであ
り、多孔質のアルマイト層内に室温で化学吸着膜を設け
ることで簡単に封孔を行い、アルミニウムの耐食性を向
上させることを可能にするとともに、基材感を損なわな
いアルミニウム酸化皮膜を提供することを第１の目的と
する。The present invention solves these problems, and it is possible to improve the corrosion resistance of aluminum by providing a chemisorption film at room temperature in a porous alumite layer for easy sealing. At the same time, the first object is to provide an aluminum oxide film that does not impair the feeling of the substrate.
【０００５】本発明の第２の目的は、このようなアルミ
ニウム酸化皮膜の簡単な製造方法を提供することであ
る。A second object of the present invention is to provide a simple method for producing such an aluminum oxide film.
【０００６】[0006]
【課題を解決するための手段】第１の目的を達成するた
めの本発明の第１の手段は、アルミニウム表面に形成し
た多孔質のアルマイト層内に化学吸着膜を設けることで
封孔を行ったアルミニウム酸化皮膜を提供することであ
る。[Means for Solving the Problem] The first means of the present invention for achieving the first object is to seal a porous alumite layer formed on an aluminum surface by providing a chemisorption film. To provide an aluminum oxide film.
【０００７】第２の目的を達成するための本発明の第２
の手段は、アルミニウム表面に形成したアルマイト層内
に化学吸着膜を設けるためのシロキサン化合物を化学吸
着させる工程を特長とするアルミニウム酸化皮膜の製造
法を提供することである。Second aspect of the present invention for achieving the second object
The means is to provide a method for producing an aluminum oxide film, which is characterized by a step of chemically adsorbing a siloxane compound for forming a chemisorption film in an alumite layer formed on the surface of aluminum.
【０００８】[0008]
【作用】アルミニウム基材を陽極にして、硫酸溶液中で
電気分解することで基材上に多孔質アルマイト層を形成
する。この基材を室温程度の温度の窒素雰囲気下でシロ
キサン化合物を含有する非水系溶媒に浸漬させると、シ
ロキサン化合物とアルマイト層に吸着した水酸基もしく
は水と反応し、シロキサン化合物がアルマイト層に化学
吸着する。この後、この基材を室温程度の温度で水に浸
漬させると、化学吸着したシロキサン化合物上に水酸基
もしくは水が吸着する。この一連の吸着操作を繰り返
し、シロキサン化合物を重合させると化学吸着膜が成長
し、最終的には多孔質アルマイト層が封孔される。この
結果、アルミニウムの耐食性を向上させたアルミニウム
酸化皮膜が形成される。Function: The aluminum base material is used as an anode and electrolyzed in a sulfuric acid solution to form a porous alumite layer on the base material. When this base material is immersed in a non-aqueous solvent containing a siloxane compound in a nitrogen atmosphere at a temperature of about room temperature, it reacts with the hydroxyl group or water adsorbed on the siloxane compound and the alumite layer, and the siloxane compound is chemically adsorbed on the alumite layer. . After that, when this base material is immersed in water at a temperature of about room temperature, a hydroxyl group or water is adsorbed on the chemically adsorbed siloxane compound. By repeating this series of adsorption operations to polymerize the siloxane compound, a chemisorption film grows and finally the porous alumite layer is sealed. As a result, an aluminum oxide film with improved aluminum corrosion resistance is formed.
【０００９】この状態は、アルマイト上に塗膜が付着し
ている場合と違い、アルマイト層内にシロキサン結合と
いう化学結合でもって化学吸着膜を形成するため、表面
を繰り返し洗浄しても、化学吸着膜が剥離することがな
く、長期にわたり、アルミニウムの耐食性が維持され
る。また、この化学吸着膜によって基材感を損なうこと
もない。In this state, unlike the case where the coating film is adhered on the alumite, a chemical adsorption film is formed in the alumite layer by a chemical bond called a siloxane bond, so that even if the surface is repeatedly washed, the chemical adsorption occurs. The film does not peel off, and the corrosion resistance of aluminum is maintained for a long time. Further, the chemical adsorption film does not impair the feeling of the substrate.
【００１０】[0010]
（実施例１）以下、本発明のアルミニウム酸化皮膜とそ
の製造方法の具体的実施例を図１を用いて説明する。ア
ルミニウム基材としてＡ１１００を用い、これをＪＩＳ
−Ｈ−９５００に基づいて基材上に多孔質アルマイト層
１（膜厚８μｍ）を形成する。この基材を室温程度の温
度の窒素雰囲気下でシロキサン化合物２としてヘキサジ
クロロシロキサン、その非水系溶媒としてクロロホルム
を用いた濃度１０-2ｍｏｌ／ｌ溶液に浸漬させると、シ
ロキサン化合物２と多孔質アルマイト層１に吸着した水
酸基３もしくは水４とが反応し、シロキサン化合物２が
多孔質アルマイト層１に化学吸着する。この後、この基
材を水４に浸漬させると、化学吸着したシロキサン化合
物上に水酸基３もしくは水４が吸着する。これら一連の
吸着操作を繰り返し、シロキサン化合物を重合させると
化学吸着膜５が成長し、最終的には多孔質アルマイト層
が封孔される化学吸着膜５が形成される。(Embodiment 1) Hereinafter, a concrete embodiment of the aluminum oxide film and the method for producing the same of the present invention will be described with reference to FIG. A1100 is used as the aluminum base material, and this is JIS
A porous alumite layer 1 (film thickness 8 μm) is formed on a substrate based on —H-9500. When this base material is immersed in a solution of hexadichlorosiloxane as the siloxane compound 2 and chloroform as its non-aqueous solvent in a concentration of 10 -2 mol / l in a nitrogen atmosphere at about room temperature, the siloxane compound 2 and the porous alumite are used. The hydroxyl group 3 or water 4 adsorbed on the layer 1 reacts, and the siloxane compound 2 is chemically adsorbed on the porous alumite layer 1. Then, when this base material is immersed in water 4, the hydroxyl group 3 or water 4 is adsorbed on the chemically adsorbed siloxane compound. By repeating these series of adsorption operations and polymerizing the siloxane compound, the chemical adsorption film 5 grows, and finally the chemical adsorption film 5 in which the porous alumite layer is sealed is formed.
【００１１】本発明に供されるアルミニウム基材として
は、例えば、純アルミニウムのＡ１０００をはじめ、Ｍ
ｎ含有アルミニウムのＡ３０００系など一般のアルミニ
ウム基材の何れでもよい。シロキサン化合物としては、
吸着密度を高めるために一般式 X-(SiX2O)n-SiX3（n=1,
2,3・・・・：なおn=0はシラン化合物であるが言うまでもな
くよい。：X=ハロケ゛ン基 ）に示した直鎖状化合物が好まし
い。また、非水系溶媒として上記シロキサン化合物と反
応する活性水素を持たない有機溶媒であればよく、例え
ば上記シロキサン化合物 X-(SiX2O)n-SiX3 に対して
は、CHmX4-m（m=0,1,2,3）が好ましい。Examples of the aluminum base material used in the present invention include pure aluminum such as A1000 and M.
Any general aluminum base material such as A3000 series of n-containing aluminum may be used. As the siloxane compound,
In order to increase the adsorption density, the general formula X- (SiX 2 O) n -SiX 3 (n = 1,
2,3 ...: It is needless to say that n = 0 is a silane compound. : X = halogen group) is preferable. The non-aqueous solvent may be an organic solvent having no active hydrogen that reacts with the siloxane compound. For example, CH m X 4-m for the siloxane compound X- (SiX 2 O) n -SiX 3 . (M = 0,1,2,3) is preferable.
【００１２】（実施例２）実施例１と同様にアルマイト
処理、および吸着処理を行い、実施例１の吸着処理回数
を変えた基材と比較品として、アルマイト処理品（膜厚
８μｍ、未吸着処理品）とその蒸気封孔品（３気圧，５
分間）について、耐食試験として沸騰水浸漬試験を行
い、その結果を（表１）に示す。(Example 2) An alumite-treated product (film thickness 8 μm, unadsorbed) was used as a comparison product with the base material which was subjected to the alumite treatment and the adsorption treatment in the same manner as in Example 1 and the number of times of the adsorption treatment was changed. Treated product) and its steam-sealed product (3 atm, 5
(For minutes), a boiling water immersion test was performed as a corrosion resistance test, and the results are shown in (Table 1).
【００１３】[0013]
【表１】 [Table 1]
【００１４】耐食性については、吸着回数が多いものほ
ど優れ、５回以上ではほとんど変わらない。そのレベル
は未吸着処理品に比べ大幅に向上し、蒸気封孔品同等あ
るいはそれ以上である。これらの結果は、本発明に目的
を満たすものである。Regarding the corrosion resistance, the more the number of times of adsorption, the better the corrosion resistance. The level is significantly higher than that of the non-adsorbed product, and is equivalent to or better than the steam-sealed product. These results meet the objectives of the present invention.
【００１５】[0015]
【発明の効果】以上の実施例から明らかなように、上記
の第１の手段によれば、アルミニウム基材を多孔質アル
マイト層を基材上に形成した後、この基材を室温程度の
温度の窒素雰囲気下でシロキサン化合物を含有する非水
系溶媒に浸漬させることでシロキサン化合物を化学吸着
させ、これを繰り返し重合させて化学吸着膜を設けるこ
とで封孔を行い、アルミニウムの耐食性を向上させたア
ルミニウム酸化皮膜から構成される。この状態は、多孔
質アルマイト上に塗膜が付着している場合と違い、多孔
質アルマイト層内にシロキサン結合という化学結合でも
って化学吸着膜を形成するため、表面を繰り返し洗浄し
ても、化学吸着膜が剥離することがなく、長期にわた
り、アルミニウムの耐食性が維持される。また、この化
学吸着膜によって基材感を損なうこともない。As is apparent from the above examples, according to the above-mentioned first means, after the aluminum base material is formed on the base material with the porous alumite layer, the base material is heated to a temperature of about room temperature. The siloxane compound was chemically adsorbed by immersing it in a non-aqueous solvent containing the siloxane compound under a nitrogen atmosphere, and the polymer was repeatedly polymerized to form a chemisorption film for sealing to improve the corrosion resistance of aluminum. It is composed of an aluminum oxide film. This state is different from the case where the coating film is adhered on the porous alumite, because a chemical adsorption film is formed in the porous alumite layer by a chemical bond called a siloxane bond, so even if the surface is repeatedly washed, The adsorption film does not peel off, and the corrosion resistance of aluminum is maintained for a long time. Further, the chemical adsorption film does not impair the feeling of the substrate.
【００１６】また、第２の手段によれば、多孔質アルマ
イト層内に化学吸着膜を設けるためのシロキサン化合物
を化学吸着させる工程を特長とするアルミニウム酸化皮
膜の製造法を提供することにより、上記第１の手段のア
ルミニウム酸化皮膜を簡単に製造することができる。Further, according to the second means, by providing a method for producing an aluminum oxide film, which is characterized by a step of chemically adsorbing a siloxane compound for providing a chemically adsorbed film in the porous alumite layer, The aluminum oxide film of the first means can be easily manufactured.
【図１】多孔質アルマイト層中に形成された化学吸着膜
とその製造法FIG. 1 Chemical adsorption film formed in porous alumite layer and its manufacturing method
１ 多孔質アルマイト層 ２ シロキサン化合物 ３ 水酸基 ４ 水 ５ 化学吸着膜 1 porous alumite layer 2 siloxane compound 3 hydroxyl group 4 water 5 chemisorption film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 曽我 眞守 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 尾崎 伸司 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 小川 一文 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mamoru Soga 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Shinji Ozaki 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Kazufumi Ogawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (2)
マイト層内に、シロキサン化合物を有する化学吸着膜を
設けたアルミニウム酸化皮膜。1. An aluminum oxide film having a chemisorption film containing a siloxane compound in a porous alumite layer formed on the surface of aluminum.
マイト層内に、化学吸着膜を設けるためのシロキサン化
合物を化学吸着させる工程を特長とするアルミニウム酸
化皮膜の製造法。2. A method for producing an aluminum oxide film, which comprises a step of chemically adsorbing a siloxane compound for providing a chemisorption film in a porous alumite layer formed on the surface of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26018994A JP3171027B2 (en) | 1994-10-25 | 1994-10-25 | Aluminum oxide film and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26018994A JP3171027B2 (en) | 1994-10-25 | 1994-10-25 | Aluminum oxide film and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08120490A true JPH08120490A (en) | 1996-05-14 |
| JP3171027B2 JP3171027B2 (en) | 2001-05-28 |
Family
ID=17344571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26018994A Expired - Fee Related JP3171027B2 (en) | 1994-10-25 | 1994-10-25 | Aluminum oxide film and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3171027B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000012781A3 (en) * | 1998-08-28 | 2000-11-16 | Alcoa Inc | Method for surface treating aluminum products |
| WO2001071060A1 (en) * | 2000-03-22 | 2001-09-27 | Electro Chemical Engineering Gmbh | Dyed conversion layer |
| JP2013060620A (en) * | 2011-09-12 | 2013-04-04 | Toyota Motor Corp | Internal combustion engine and method for manufacturing the same |
| JP5724021B1 (en) * | 2014-06-25 | 2015-05-27 | アイシン軽金属株式会社 | High alkali-resistant aluminum member and method for producing the same |
-
1994
- 1994-10-25 JP JP26018994A patent/JP3171027B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000012781A3 (en) * | 1998-08-28 | 2000-11-16 | Alcoa Inc | Method for surface treating aluminum products |
| US6440290B1 (en) * | 1998-08-28 | 2002-08-27 | Alcoa Inc. | Method for surface treating aluminum products |
| WO2001071060A1 (en) * | 2000-03-22 | 2001-09-27 | Electro Chemical Engineering Gmbh | Dyed conversion layer |
| JP2013060620A (en) * | 2011-09-12 | 2013-04-04 | Toyota Motor Corp | Internal combustion engine and method for manufacturing the same |
| JP5724021B1 (en) * | 2014-06-25 | 2015-05-27 | アイシン軽金属株式会社 | High alkali-resistant aluminum member and method for producing the same |
| WO2015198726A1 (en) * | 2014-06-25 | 2015-12-30 | アイシン軽金属株式会社 | Highly alkali-resistant aluminum member and method for producing same |
| US11035052B2 (en) | 2014-06-25 | 2021-06-15 | Aisin Keikinzoku Co., Ltd. | Highly alkali-resistant aluminum member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3171027B2 (en) | 2001-05-28 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |