JP2002115086A - Method of plating onto aluminum or aluminum alloy - Google Patents
Method of plating onto aluminum or aluminum alloyInfo
- Publication number
- JP2002115086A JP2002115086A JP2000310661A JP2000310661A JP2002115086A JP 2002115086 A JP2002115086 A JP 2002115086A JP 2000310661 A JP2000310661 A JP 2000310661A JP 2000310661 A JP2000310661 A JP 2000310661A JP 2002115086 A JP2002115086 A JP 2002115086A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- aluminum
- aluminum alloy
- substrate
- cleaning
- 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
Links
- 238000007747 plating Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 25
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000005530 etching Methods 0.000 claims abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010306 acid treatment Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 17
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 30
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 17
- 229910052725 zinc Inorganic materials 0.000 description 17
- 239000011701 zinc Substances 0.000 description 17
- 238000006467 substitution reaction Methods 0.000 description 16
- 229910052759 nickel Inorganic materials 0.000 description 15
- 239000002585 base Substances 0.000 description 14
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 229910017604 nitric acid Inorganic materials 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000002253 acid Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000000635 electron micrograph Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 3
- KVBCYCWRDBDGBG-UHFFFAOYSA-N azane;dihydrofluoride Chemical compound [NH4+].F.[F-] KVBCYCWRDBDGBG-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 241001050985 Disco Species 0.000 description 1
- 101100032842 Oryza sativa subsp. japonica RA16 gene Proteins 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウムまた
はアルミニウム合金で形成された基材の表面に金属メッ
キを施すメッキ方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plating method for plating a surface of a substrate formed of aluminum or an aluminum alloy with metal.
【０００２】[0002]
【従来の技術】例えば、アルミニウムまたはアルミニウ
ム合金で形成された基材へのメッキは基材とメッキ層と
の密着力が弱いため、アルミニウムまたはアルミニウム
合金で形成された基材の表面にニッケル等の金属メッキ
を施す場合、基材とメッキ層との密着強度を高めるため
の前処理として亜鉛置換法が一般に採用されている。一
般的な亜鉛置換法は、次の工程を含んでいる。 （１）予備洗浄：油、グリース等による表面の汚れを除
去する。例えば、アセトン等で５〜１０分間超音波洗浄
する。 （２）アルカリ洗浄：脱脂および不均一参加皮膜を除去
する。例えば、カセイソーダ５０ｇ／リットル、６０°
Ｃ、３０〜６０秒、または、リン酸ソーダ２３ｇ／リッ
トル、７０〜８０°Ｃ、１〜３分。 （３）硝酸洗浄：アルカリ洗浄で生じたアルミニウム合
金中の異種金属のスマット（合金成分）を除去する。ア
ルミニウム合金のタイプにより、硝酸濃度や添加物を変
える。例えば、２０％硝酸、２０〜３０°Ｃ、２〜５
分。 （４）活性酸洗浄：表面の酸化膜やスラッジ（合金成
分）を除去する。例えば、１水素２フッ化アンモニウム
３０ｇ／リットル、２０〜３０°Ｃ、５〜１０分。 （５）一次亜鉛置換：アルミニウムと亜鉛を置換させ
る。例えば、酸化亜鉛８０〜１００ｇ／リットル＋カセ
イソーダ４００〜５００ｇ／リットル、２０〜３０°
Ｃ、２０〜１２０秒。 （６）一次亜鉛置換膜の溶解：一次亜鉛置換膜を溶解す
る。例えば、５〜５０％硝酸、２０〜３０°Ｃ、数秒〜
１分。 （７）二次亜鉛置換：２回目の亜鉛置換を行うことで、
より均一で確実な置換が成される。置換方法は一次亜鉛
置換と同じ。2. Description of the Related Art For example, when plating a substrate made of aluminum or an aluminum alloy, the adhesion between the substrate and the plating layer is weak, so that the surface of the substrate made of aluminum or an aluminum alloy is coated with nickel or the like. When performing metal plating, a zinc substitution method is generally adopted as a pretreatment for increasing the adhesion strength between the base material and the plating layer. A general zinc substitution method includes the following steps. (1) Preliminary cleaning: removes surface dirt from oil, grease, etc. For example, ultrasonic cleaning is performed with acetone or the like for 5 to 10 minutes. (2) Alkaline washing: removes degreasing and unevenly participating films. For example, caustic soda 50g / liter, 60 °
C, 30 to 60 seconds, or sodium phosphate 23g / liter, 70 to 80 ° C, 1 to 3 minutes. (3) Nitric acid cleaning: Smut (alloy component) of dissimilar metal in aluminum alloy generated by alkali cleaning is removed. The nitric acid concentration and additives are changed depending on the type of aluminum alloy. For example, 20% nitric acid, 20-30 ° C, 2-5
Minutes. (4) Active acid cleaning: removes oxide film and sludge (alloy component) on the surface. For example, ammonium hydrogen difluoride 30 g / liter, 20-30 ° C., 5-10 minutes. (5) Primary zinc substitution: aluminum and zinc are substituted. For example, zinc oxide 80-100 g / liter + caustic soda 400-500 g / liter, 20-30 °
C, 20 to 120 seconds. (6) Dissolving the primary zinc-substituted film: dissolving the primary zinc-substituted film. For example, 5 to 50% nitric acid, 20 to 30 ° C., several seconds to
1 minute. (7) Secondary zinc substitution: By performing the second zinc substitution,
A more uniform and reliable replacement is achieved. Substitution method is the same as primary zinc substitution.
【０００３】[0003]
【発明が解決しようとする課題】而して、亜鉛置換処理
において使用される亜鉛置換処理液は、人体の健康に悪
影響を及ぼす亜鉛を含んでいる。このため、亜鉛置換処
理液を廃棄する場合は、亜鉛の濃度を５ＰＰＭ以下にす
ることが義務付けられている。従って、亜鉛置換処理液
の処理費用が増大し、製品のコストアップの要因となっ
ている。また、公害問題の観点からすれば、人体の健康
に悪影響を及ぼす有害物質は使用しないことが望まし
い。Accordingly, the zinc-substituted treatment solution used in the zinc-substitution treatment contains zinc, which has an adverse effect on human health. For this reason, when discarding the zinc-substituted processing solution, it is required that the concentration of zinc be 5 PPM or less. Therefore, the processing cost of the zinc-substituted processing solution increases, which is a factor of increasing the cost of the product. Also, from the viewpoint of pollution problems, it is desirable not to use harmful substances that adversely affect human health.
【０００４】本発明は上記事実に鑑みてなされたもので
あり、その主たる技術的課題は、人体の健康に悪影響を
及ぼす有害物質を用いることなく、アルミニウムまたは
アルミニウム合金で形成された基材とメッキ層との密着
強度を高めることができるメッキ方法を提供することに
ある。[0004] The present invention has been made in view of the above-mentioned facts, and its main technical problem is that a substrate formed of aluminum or an aluminum alloy can be plated without using harmful substances that adversely affect human health. An object of the present invention is to provide a plating method capable of increasing the adhesion strength to a layer.
【０００５】[0005]
【課題を解決するための手段】上記主たる技術的課題を
解決するために、本発明によれば、アルミニウムまたは
アルミニウム合金で形成された基材の表面に金属メッキ
を施すメッキ方法であって、洗浄処理された基材の表面
に塩酸を主成分とする活性酸処理液でエッチング処理を
施し、該基材の表面に微細なエッチング凹部を形成する
エッチング工程と、該エッチング凹部が形成された基材
の表面に金属メッキ層を形成するメッキ工程と、を含
む、ことを特徴とするアルミニウムまたはアルミニウム
合金のメッキ方法が提供される。According to the present invention, there is provided a plating method for plating a surface of a base material made of aluminum or an aluminum alloy with a metal, comprising the steps of: An etching step of subjecting the surface of the treated substrate to an etching treatment with an active acid treatment liquid containing hydrochloric acid as a main component to form fine etching recesses on the surface of the substrate, and a substrate having the etching recesses formed thereon And a plating step of forming a metal plating layer on the surface of the aluminum alloy.
【０００６】[0006]
【発明の実施の態様】以下、本発明によるアルミニウム
またはアルミニウム合金のメッキ方法の好適な実施形態
について、詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of a method for plating aluminum or an aluminum alloy according to the present invention will be described in detail.
【０００７】本発明によるメッキ方法は、メッキ工程前
の前処理として、上記（１）予備洗浄、（２）アルカリ
洗浄、（３）硝酸洗浄、（４）１水素２フッ化アンモニ
ウムを主成分とする活性酸処理液で洗浄を実施した後に
（（１）〜（３）でもよいが、（４）を加える方がより
よい）、塩酸を主成分とする活性酸処理液でエッチング
処理を施す。このようにしてエッチング処理を施すこと
により、アルミニウムまたはアルミニウム合金で形成さ
れた基材の表面には、微細で一様なエッチング凹部が無
数に形成される。そして、表面に無数の微細なエッチン
グ凹部が形成された基材にニッケル等の金属メッキを施
すと、上記凹部にメッキ金属が隙間無くメッキされ、基
材とメッキ層との密着強度が向上する。In the plating method according to the present invention, as pretreatments before the plating step, (1) pre-cleaning, (2) alkali cleaning, (3) nitric acid cleaning, and (4) ammonium hydrogen difluoride as a main component. After the cleaning with the active acid treatment liquid to be performed ((1) to (3) may be performed, but it is better to add (4)), the etching treatment is performed with the active acid treatment liquid containing hydrochloric acid as a main component. By performing the etching process in this way, countless fine and uniform concave portions are formed on the surface of the base material formed of aluminum or an aluminum alloy. Then, when metal plating such as nickel is applied to a substrate having a myriad of finely etched concave portions formed on the surface, the concave portion is plated with a plating metal without gaps, and the adhesion strength between the substrate and the plating layer is improved.
【０００８】次に、上述した本発明によるメッキ方法に
ついて、図１を参照して更に詳細に説明する。図１の
（ａ）に示すアルミニウムまたはアルミニウム合金で形
成された基材２は、上記（１）予備洗浄、（２）アルカ
リ洗浄、（３）硝酸洗浄、（４）活性酸洗浄、または
（１）〜（３）の各洗浄処理が施されている。次に、洗
浄処理が施された基材２を図１の（ｂ）に示すようにエ
ッチング処理槽４に収容された塩酸を主成分とする活性
酸処理液に３４〜３６°Ｃの温度で１〜２分間浸漬し
て、エッチング処理する。なお、活性酸処理液として
は、例えばサンライト株式会社によって製造販売されて
いる「ＮＡＳ−７２７」（１８％塩酸が主成分）の活性
酸液を原液または数倍に薄めて使用することができる。
このようにしてエッチング処理すると、基材２の表面に
は幅と深さが共に１〜数十μｍ程度のエッチング凹部が
無数に形成される。このようにしてエッチング処理され
た基材２を図１の（ｃ）に示すようにメッキ槽６に収容
されたニッケルメッキ液に入れて通常の電気メッキ法、
即ち基材２を電源７の陰極（−）にメッキ金属８を電源
７の陽極（＋）に接続することよって、基材２の表面に
メッキ層を形成する。また、ニッケルメッキ液中に例え
ばダイヤモンド砥粒を混入させるこよにより、基台２の
表面にダイヤモンド砥粒をニッケルメッキで固定した複
合メッキ層からなる切削或いは研削用の砥石を形成する
ことができる。なお、ニッケルメッキ液等のメッキ金属
溶液中に炭化珪素（ＳｉＣ）の粒子を混入すれば、炭化
珪素（ＳｉＣ）の粒子と金属との複合メッキ層を形成す
ることができ、耐熱性や耐磨耗性に優れた部品を得るこ
とができる。Next, the plating method according to the present invention will be described in more detail with reference to FIG. The substrate 2 formed of aluminum or an aluminum alloy shown in FIG. 1A can be prepared by the above-mentioned (1) pre-cleaning, (2) alkali cleaning, (3) nitric acid cleaning, (4) active acid cleaning, or (1) ) To (3). Next, as shown in FIG. 1B, the base material 2 having been subjected to the cleaning treatment is treated with an active acid treatment liquid containing hydrochloric acid as a main component and contained in an etching treatment tank 4 at a temperature of 34 to 36 ° C. Immerse for 1-2 minutes to perform etching. As the active acid treatment solution, for example, an active acid solution of “NAS-727” (18% hydrochloric acid as a main component) manufactured and sold by Sunlight Co., Ltd. can be used as a stock solution or diluted several times. .
When the etching process is performed in this manner, an infinite number of etching concave portions each having a width and a depth of about 1 to several tens μm are formed on the surface of the substrate 2. The substrate 2 thus etched is put into a nickel plating solution contained in a plating tank 6 as shown in FIG.
That is, a plating layer is formed on the surface of the substrate 2 by connecting the substrate 2 to the cathode (−) of the power source 7 and the plating metal 8 to the anode (+) of the power source 7. Further, by mixing, for example, diamond abrasive grains in the nickel plating solution, it is possible to form a grinding or grinding wheel made of a composite plating layer in which diamond abrasive grains are fixed by nickel plating on the surface of the base 2. If particles of silicon carbide (SiC) are mixed in a plating metal solution such as a nickel plating solution, a composite plating layer of silicon carbide (SiC) particles and metal can be formed, and heat resistance and abrasion resistance can be improved. It is possible to obtain parts having excellent wear properties.
【０００９】[0009]
【実施例】アルミニウム基材を上記（１）予備洗浄、
（２）アルカリ洗浄、（３）硝酸洗浄、（４）活性酸洗
浄処理した後、塩酸を主成分とする活性酸液であるサン
ライト株式会社によって製造販売されている「ＮＡＳ−
７２７」（１８％塩酸が主成分）を２倍に薄めたエッチ
ング溶液中に、３５°Ｃの温度で２分間浸漬してエッチ
ング処理した。このエッチング処理したアルミニウム基
材の表面に通常の電気メッキ法によってニッケルメッキ
を施した。図２は上記実施例の方法でアルミニウム基材
にニッケルメッキを施した境界面を１０００倍に拡大し
て示す図面代用電子顕微鏡写真、図３はアルミニウム基
材に上記（１）予備洗浄、（２）アルカリ洗浄、（３）
硝酸洗浄、（４）活性酸洗浄を施した後に、ニッケルメ
ッキを施した比較例の境界面を１０００倍に拡大して示
す図面代用電子顕微鏡写真である。図３に明確に示され
ているように、比較例におけるアルミニウム基材とニッ
ケルメッキ層との境界面は極めてゆるやかな凹凸である
のに対し、図２に示す本発明によるメッキ方法によると
アルミニウム基材とニッケルメッキ層との境界面は、数
μｍ前後のエッチング凹部が形成され、このエッチング
凹部にニッケルが隙間無くメッキされていることがわか
る。従って、ニッケルメッキ層は基材に形成されたエッ
チング凹部に恰も根が生えたように強固な結合が発現さ
れる。しかも、エッチング凹部は角張った形状になって
いるので、基材とニッケルメッキ層との密着強度が一層
強固になる。EXAMPLE An aluminum substrate was subjected to the above (1) pre-cleaning,
(2) Alkaline washing, (3) nitric acid washing, and (4) active acid washing treatment, followed by “NAS- manufactured and sold by Sunlight Co., Ltd., which is an active acid solution containing hydrochloric acid as a main component.
727 "(18% hydrochloric acid as a main component) was immersed in an etching solution twice diluted at a temperature of 35 ° C. for 2 minutes to carry out etching treatment. The surface of the etched aluminum substrate was nickel-plated by a normal electroplating method. FIG. 2 is an electron micrograph instead of a drawing showing a 1000-fold magnified interface of nickel-plated aluminum base material by the method of the above-described embodiment, and FIG. ) Alkaline cleaning, (3)
It is a drawing substitute electron micrograph which enlarges the boundary surface of the comparative example which applied nickel plating after performing nitric acid cleaning and (4) active acid cleaning, and 1000 times. As clearly shown in FIG. 3, the interface between the aluminum base material and the nickel plating layer in the comparative example has extremely gentle irregularities, whereas the plating method according to the present invention shown in FIG. It can be seen that an etching recess of about several μm was formed at the boundary surface between the material and the nickel plating layer, and nickel was plated in this etching recess without gaps. Therefore, the nickel plating layer exhibits strong bonding as if roots were formed in the etched concave portions formed in the base material. In addition, since the etched concave portion has a square shape, the adhesion strength between the base material and the nickel plating layer is further enhanced.
【００１０】以上のように、本発明のメッキ方法による
とアルミニウムまたはアルミニウム合金で形成された基
材の表面に強固に結合された金属メッキ層を形成するこ
とができので、例えば、アルミニウム基台の表面にダイ
ヤモンド砥粒等を金属メッキで固定した切削、研削砥石
においては、アルミニウム基台の表面から複合メッキ層
が剥離することがなく、切削、研削砥石の寿命を向上さ
せることができる。また、アルミニウムまたはアルミニ
ウム合金で形成された部品に耐熱性や耐磨耗性に優れた
金属をメッキし、または炭化珪素（ＳｉＣ）等の粒子と
金属とを複合メッキすることにより、軽量で表面が耐熱
性や耐磨耗性に優れた部品を得ることができ、内燃機関
やコンプレッサー等の摺動部品に適用することにより、
これらの部品の性能を飛躍的に向上させることができ
る。しかも、本発明のメッキ方法においては、亜鉛置換
法のように有害物質を使用しないので、自然環境を汚染
することがないとともに、有害物質の処理費用が不要と
なるため、製品コストの低減を図ることができる。As described above, according to the plating method of the present invention, a metal plating layer firmly bonded can be formed on the surface of a substrate formed of aluminum or an aluminum alloy. In a cutting and grinding wheel in which diamond abrasive grains or the like are fixed to the surface by metal plating, the composite plating layer does not peel off from the surface of the aluminum base, and the life of the cutting and grinding wheel can be improved. In addition, a component made of aluminum or an aluminum alloy is plated with a metal having excellent heat resistance and abrasion resistance, or a composite plating of particles such as silicon carbide (SiC) and a metal is used to reduce the weight and the surface. Parts with excellent heat resistance and wear resistance can be obtained, and by applying to sliding parts such as internal combustion engines and compressors,
The performance of these components can be dramatically improved. Moreover, in the plating method of the present invention, no harmful substances are used unlike the zinc substitution method, so that the natural environment is not polluted and the cost of treating the harmful substances is not required, so that the product cost is reduced. be able to.
【００１１】[0011]
【発明の効果】本発明のメッキ方法は、洗浄処理された
基材の表面に塩酸を主成分とする活性酸処理液でエッチ
ング処理を施し、該基材の表面に微細なエッチング凹部
を形成した後、該基材の表面に金属メッキ層を形成する
ので、人体の健康に悪影響を及ぼす有害物質を用いるこ
となく、アルミニウムまたはアルミニウム合金で形成さ
れた基材とメッキ層との密着強度を高めることができ
る。According to the plating method of the present invention, the surface of the cleaned substrate is subjected to an etching treatment with an active acid treatment solution containing hydrochloric acid as a main component, and fine etching recesses are formed on the surface of the substrate. After that, since a metal plating layer is formed on the surface of the base material, the adhesion strength between the base material formed of aluminum or an aluminum alloy and the plating layer can be increased without using harmful substances that adversely affect human health. Can be.
【図１】本発明のメッキ方法の各工程を示す説明図。FIG. 1 is an explanatory view showing each step of a plating method according to the present invention.
【図２】本発明のメッキ方法によってアルミニウム合金
基材にニッケルメッキを施した境界面を１０００倍に拡
大して示す図面代用電子顕微鏡写真。FIG. 2 is an electron micrograph instead of a drawing showing a 1000-fold enlarged boundary surface obtained by plating an aluminum alloy substrate with nickel by the plating method of the present invention.
【図３】比較例によってアルミニウム合金基材にニッケ
ルメッキを施した境界面を１０００倍に拡大して示す図
面代用電子顕微鏡写真。FIG. 3 is a drawing substitute electron micrograph showing a 1000 × magnification of a boundary surface obtained by subjecting an aluminum alloy substrate to nickel plating according to a comparative example.
２：基材 ４：エッチング処理槽 ６：メッキ槽 ７：電源 ８：メッキ金属 2: Base material 4: Etching tank 6: Plating tank 7: Power supply 8: Plating metal
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年１０月１２日（２０００．１０．
１２）[Submission date] October 12, 2000 (2000.10.
12)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Correction target item name] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００２】[0002]
【従来の技術】例えば、アルミニウムまたはアルミニウ
ム合金で形成された基材へのメッキは基材とメッキ層と
の密着力が弱いため、アルミニウムまたはアルミニウム
合金で形成された基材の表面にニッケル等の金属メッキ
を施す場合、基材とメッキ層との密着強度を高めるため
の前処理として亜鉛置換法が一般に採用されている。一
般的な亜鉛置換法は、次の工程を含んでいる。 （１）予備洗浄：油、グリース等による表面の汚れを除
去する。例えば、アセトン等で５〜１０分間超音波洗浄
する。 （２）アルカリ洗浄：脱脂および不均一酸化皮膜を除去
する。例えば、カセイソーダ５０ｇ／リットル、６０°
Ｃ、３０〜６０秒、または、リン酸ソーダ２３ｇ／リッ
トル、７０〜８０°Ｃ、１〜３分。 （３）硝酸洗浄：アルカリ洗浄で生じたアルミニウム合
金中の異種金属のスマット（合金成分）を除去する。ア
ルミニウム合金のタイプにより、硝酸濃度や添加物を変
える。例えば、２０％硝酸、２０〜３０°Ｃ、２〜５
分。 （４）活性酸洗浄：表面の酸化膜やスラッジ（合金成
分）を除去する。例えば、１水素２フッ化アンモニウム
３０ｇ／リットル、２０〜３０°Ｃ、５〜１０分。 （５）一次亜鉛置換：アルミニウムと亜鉛を置換させ
る。例えば、酸化亜鉛８０〜１００ｇ／リットル＋カセ
イソーダ４００〜５００ｇ／リットル、２０〜３０°
Ｃ、２０〜１２０秒。 （６）一次亜鉛置換膜の溶解：一次亜鉛置換膜を溶解す
る。例えば、５〜５０％硝酸、２０〜３０°Ｃ、数秒〜
１分。 （７）二次亜鉛置換：２回目の亜鉛置換を行うことで、
より均一で確実な置換が成される。置換方法は一次亜鉛
置換と同じ。2. Description of the Related Art For example, when plating a substrate made of aluminum or an aluminum alloy, the adhesion between the substrate and the plating layer is weak, so that the surface of the substrate made of aluminum or an aluminum alloy is coated with nickel or the like. When performing metal plating, a zinc substitution method is generally adopted as a pretreatment for increasing the adhesion strength between the base material and the plating layer. A general zinc substitution method includes the following steps. (1) Preliminary cleaning: removes surface dirt from oil, grease, etc. For example, ultrasonic cleaning is performed with acetone or the like for 5 to 10 minutes. (2) Alkaline cleaning: Degreasing and removing a non-uniform oxide film. For example, caustic soda 50g / liter, 60 °
C, 30 to 60 seconds, or sodium phosphate 23g / liter, 70 to 80 ° C, 1 to 3 minutes. (3) Nitric acid cleaning: Smut (alloy component) of dissimilar metal in aluminum alloy generated by alkali cleaning is removed. The nitric acid concentration and additives are changed depending on the type of aluminum alloy. For example, 20% nitric acid, 20-30 ° C, 2-5
Minutes. (4) Active acid cleaning: removes oxide film and sludge (alloy component) on the surface. For example, ammonium hydrogen difluoride 30 g / liter, 20-30 ° C., 5-10 minutes. (5) Primary zinc substitution: aluminum and zinc are substituted. For example, zinc oxide 80-100 g / liter + caustic soda 400-500 g / liter, 20-30 °
C, 20 to 120 seconds. (6) Dissolving the primary zinc-substituted film: dissolving the primary zinc-substituted film. For example, 5 to 50% nitric acid, 20 to 30 ° C., several seconds to
1 minute. (7) Secondary zinc substitution: By performing the second zinc substitution,
A more uniform and reliable replacement is achieved. Substitution method is the same as primary zinc substitution.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩岡 禎二 東京都大田区東糀谷２丁目14番３号 株式 会社ディスコ内 Ｆターム(参考） 4K024 AA03 AB01 BA06 BB17 BB21 CB01 DA03 DA04 DA06 DA07 GA01 GA03 GA04 4K053 PA10 QA01 QA03 RA05 RA16 RA21 RA25 SA06 TA01 TA09 TA12 TA16 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teiji Iwaoka 2-14-3 Higashi-Kojiya, Ota-ku, Tokyo F-term in a disco company (reference) 4K024 AA03 AB01 BA06 BB17 BB21 CB01 DA03 DA04 DA06 DA07 GA01 GA03 GA04 4K053 PA10 QA01 QA03 RA05 RA16 RA21 RA25 SA06 TA01 TA09 TA12 TA16
Claims (1)
形成された基材の表面に金属メッキを施すメッキ方法で
あって、 洗浄処理された基材の表面に塩酸を主成分とする活性酸
処理液でエッチング処理を施し、該基材の表面に微細な
エッチング凹部を形成するエッチング工程と、 該エッチング凹部が形成された基材の表面に金属メッキ
層を形成するメッキ工程と、を含む、 ことを特徴とするアルミニウムまたはアルミニウム合金
のメッキ方法。1. A plating method for performing metal plating on a surface of a substrate formed of aluminum or an aluminum alloy, wherein the surface of the cleaned substrate is etched with an active acid treatment liquid containing hydrochloric acid as a main component. And a plating step of forming a metal plating layer on the surface of the substrate on which the etched recesses have been formed, and a plating step of forming a fine etching recess on the surface of the substrate. Plating method of aluminum or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310661A JP2002115086A (en) | 2000-10-11 | 2000-10-11 | Method of plating onto aluminum or aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310661A JP2002115086A (en) | 2000-10-11 | 2000-10-11 | Method of plating onto aluminum or aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002115086A true JP2002115086A (en) | 2002-04-19 |
Family
ID=18790581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000310661A Pending JP2002115086A (en) | 2000-10-11 | 2000-10-11 | Method of plating onto aluminum or aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002115086A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010121151A (en) * | 2008-11-17 | 2010-06-03 | Fuji Electric Systems Co Ltd | Method for treating surface |
| WO2018124114A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and article fabricated using same |
| WO2018124116A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and method for manufacturing same, and article fabricated using surface treatment material |
| WO2018124115A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and article fabricated using same |
| KR20190013784A (en) | 2016-06-03 | 2019-02-11 | 후루카와 덴끼고교 가부시키가이샤 | A surface treatment material, a manufacturing method thereof, and a part formed by using a surface treatment material |
-
2000
- 2000-10-11 JP JP2000310661A patent/JP2002115086A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010121151A (en) * | 2008-11-17 | 2010-06-03 | Fuji Electric Systems Co Ltd | Method for treating surface |
| KR20190013784A (en) | 2016-06-03 | 2019-02-11 | 후루카와 덴끼고교 가부시키가이샤 | A surface treatment material, a manufacturing method thereof, and a part formed by using a surface treatment material |
| JPWO2018124115A1 (en) * | 2016-12-27 | 2019-01-10 | 古河電気工業株式会社 | Surface treatment material and parts produced using the same |
| WO2018124115A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and article fabricated using same |
| JPWO2018124116A1 (en) * | 2016-12-27 | 2018-12-27 | 古河電気工業株式会社 | Surface treatment material, method for producing the same, and parts produced using the surface treatment material |
| JPWO2018124114A1 (en) * | 2016-12-27 | 2018-12-27 | 古河電気工業株式会社 | Surface treatment material and parts produced using the same |
| WO2018124116A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and method for manufacturing same, and article fabricated using surface treatment material |
| WO2018124114A1 (en) | 2016-12-27 | 2018-07-05 | 古河電気工業株式会社 | Surface treatment material and article fabricated using same |
| KR20190097078A (en) | 2016-12-27 | 2019-08-20 | 후루카와 덴끼고교 가부시키가이샤 | Surface treatment material, manufacturing method thereof, and parts manufactured using the surface treatment material |
| KR20190097023A (en) | 2016-12-27 | 2019-08-20 | 후루카와 덴끼고교 가부시키가이샤 | Surface treatment material and parts manufactured using it |
| KR20190098963A (en) | 2016-12-27 | 2019-08-23 | 후루카와 덴끼고교 가부시키가이샤 | Surface treatment material and parts manufactured using it |
| US20190323136A1 (en) * | 2016-12-27 | 2019-10-24 | Furukawa Electric Co., Ltd. | Surface-treated material and component produced by using the same |
| US20190337268A1 (en) * | 2016-12-27 | 2019-11-07 | Furukawa Electric Co., Ltd. | Surface-treated material and component produced by using the same |
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