JPH04180594A - Aluminum alloy sheet - Google Patents
Aluminum alloy sheetInfo
- Publication number
- JPH04180594A JPH04180594A JP30728190A JP30728190A JPH04180594A JP H04180594 A JPH04180594 A JP H04180594A JP 30728190 A JP30728190 A JP 30728190A JP 30728190 A JP30728190 A JP 30728190A JP H04180594 A JPH04180594 A JP H04180594A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- sheet
- aluminum alloy
- alloy
- alloy plate
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 49
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 238000007747 plating Methods 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 239000013078 crystal Substances 0.000 abstract description 6
- 238000004070 electrodeposition Methods 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 10
- 229910019142 PO4 Inorganic materials 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 8
- 239000010452 phosphate Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000011572 manganese Substances 0.000 description 6
- 238000010422 painting Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910018134 Al-Mg Inorganic materials 0.000 description 3
- 229910018467 Al—Mg Inorganic materials 0.000 description 3
- 229910000914 Mn alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003353 gold alloy Substances 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- -1 Fe2+ ions Chemical class 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は表面に鉄又は鉄合金を被覆処理したアルミニウ
ム合金板に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aluminum alloy plate whose surface is coated with iron or an iron alloy.
従来のアルミニウム合金製の板は、これを例えば自動車
用の外板（パネル）として使う場合等にはアルミニウム
及びその合金成分である珪素、マグネシウムなどは酸素
との親和力が大きいために、金型によるプレス成形時に
金型の鉄成分との間に酸化凝着が生じ易い欠点がある。Conventional aluminum alloy plates, when used as outer panels for automobiles, for example, are difficult to mold due to the fact that aluminum and its alloy components, such as silicon and magnesium, have a strong affinity for oxygen. It has the disadvantage that oxidation adhesion tends to occur between it and the iron component of the mold during press molding.
又、パネルの溶接４合時に、アルミニウム合金板の表面
の酸化膜が非常に安定なために、これが溶接４合時の障
壁となって、接合強度が発揮できない問題がある。Furthermore, since the oxide film on the surface of the aluminum alloy plate is very stable during the fourth welding of the panel, this becomes a barrier during the fourth welding, and there is a problem in that the joint strength cannot be achieved.
さらに、塗装下地としてのりん酸塩処理を施こす場合、
りん酸塩結晶の成長速度が遅く、かつ生成するりん酸塩
結晶は針状結晶のホパイトが主体となるために、電着塗
装時にクレータを生じ易く塗装外観を損う欠点を有して
いた。Furthermore, when applying phosphate treatment as a base for painting,
Since the growth rate of phosphate crystals is slow and the phosphate crystals produced are mainly hopite needle-shaped crystals, they have the disadvantage that craters tend to form during electrodeposition coating, impairing the appearance of the coating.
本発明は上記技術水準に鑑み、従来のアルミニウム合金
の有する不具合のないアルミニウム合金板を提供しよう
とするものである。In view of the above-mentioned state of the art, the present invention aims to provide an aluminum alloy plate free from the defects of conventional aluminum alloys.
本発明はアルミニウム合金製の板材の表面に鉄又は鉄合
金を被覆してなることを特徴とするアルミニウム合金板
である。The present invention is an aluminum alloy plate characterized in that the surface of the aluminum alloy plate is coated with iron or an iron alloy.
本発明はアルミニウム合金板は、アルミニウム合金板を
予じめ表面活性化したのち、その表面に鉄又は鉄合金を
極く薄く被覆することによって製造することができる。According to the present invention, the aluminum alloy plate can be manufactured by surface-activating the aluminum alloy plate in advance and then coating the surface with a very thin layer of iron or iron alloy.
本発明でいるアルミニウム合金板とは純アルミニラム板
、ＪＩＳで規定されている全てのアルミニウム合金板を
意味する。また、鉄及び鉄合金とは純鉄及びＭｎ、 Ｚ
ｎ、 Ｐ、 Ｂ、 Ｎｉ、 Ｃｒ、 Ｃｏ。The aluminum alloy plate used in the present invention means a pure aluminum plate and all aluminum alloy plates specified by JIS. In addition, iron and iron alloys include pure iron, Mn, Z
n, P, B, Ni, Cr, Co.
Ｍｏ、 Ｖ、 Ｓｍ、 Ｎｂなどの合金元素を１種以
上を１〜２Ｑｗｔ％を含有する鉄合金を意味する。It means an iron alloy containing 1 to 2 Qwt% of one or more alloying elements such as Mo, V, Sm, and Nb.
アルミニウム合金板の表面に被覆された鉄又は鉄合金は
アルミニウム合金よりも硬いために、鉄主体の金型との
間の摩擦係数が低下すること及び鉄又は鉄合金はアルミ
ニウム合金に較べて酸素との親和性が弱いために、金型
に酸化凝着することがない。又、鉄又は鉄合金がアルミ
ニウム合金に較べて酸化しにくいことはアルミニウム合
金板上に被覆された状態の鉄又は鉄合金被膜の表面には
極く薄い鉄酸化膜しか生成していないので、溶接４合時
に障壁となることもなく、大きな接合強度が得られる。Since the iron or iron alloy coated on the surface of the aluminum alloy plate is harder than the aluminum alloy, the coefficient of friction between it and the iron-based mold decreases, and the iron or iron alloy has a lower resistance to oxygen than the aluminum alloy. Because of its weak affinity, it does not oxidize and adhere to the mold. In addition, iron or iron alloys are less susceptible to oxidation than aluminum alloys because only a very thin iron oxide film is formed on the surface of the iron or iron alloy coating that is coated on the aluminum alloy plate. It does not become a barrier at the time of 4-coupling, and high bonding strength can be obtained.
さらに、アルミニウム合金板上の鉄又は鉄合金被膜は、
塗装前のりん酸塩処理時に微細な粒状結晶であるフォス
フォヒライト［Ｚｎ、Ｆｅ（ＦＤ＝）ｚ・４ＬＯ］を生
成し、電着塗装時にクレータを生成することなく、塗装
時に美麗な外観を提供することができる。Furthermore, the iron or iron alloy coating on the aluminum alloy plate is
Fine granular crystals of phosphohylite [Zn, Fe(FD=)z・4LO] are generated during phosphate treatment before painting, and no craters are created during electrodeposition painting, resulting in a beautiful appearance when painting. can be provided.
板厚２ｍｍのＡｌ−Ｍｇ合金板（２，５ｗｔ％Ｍｇ、０
．２ｗＥ％［：ｒ、 ０．３ ｖｔ％Ｆｅ、 ｏ、 ２
５ ｗｔ％Ｓｉ、残： Ａｌ）をアルカリ水溶液で脱脂
及び表面活性化（３５ｗｔ％ＨＮＯ３水溶液に１〜３分
浸漬）し、水洗したのち、Ｆｅ２＋イオンを含む硫酸塩
水溶液（ＦｅＳＯ。Al-Mg alloy plate with a plate thickness of 2 mm (2.5 wt% Mg, 0
．． 2wE%[:r, 0.3 vt%Fe, o, 2
After degreasing and surface activation (immersion in 35 wt% HNO3 aqueous solution for 1 to 3 minutes) with an alkaline aqueous solution and washing with water, a sulfate aqueous solution containing Fe2+ ions (FeSO.
７）１２０： ３００ ｇ／Ｉ！、 Ｎａ−３Ｏ４：
ｌ ００ ｇ／ｌ。7) 120: 300 g/I! , Na-3O4:
l 00 g/l.
ｐＨ：１．８）中でＡｌ−Ｍｇ合金板を陰極とし、Ｐｂ
合金板を陽極として、電気めっき（電流密度：１００−
Ａ／ｄｍ’、極間距離： ５０ ｍｍ、浴温度：５０゜
±５℃）を行い、アルミニウム合金板上に鉄めっきを施
こし、種々の性能試験を行った。pH: 1.8), an Al-Mg alloy plate was used as a cathode, and Pb
Electroplating (current density: 100-
A/dm', distance between poles: 50 mm, bath temperature: 50°±5°C), iron plating was applied on an aluminum alloy plate, and various performance tests were conducted.
その結果を第１図に示す。即ち、金型との非凝着性、溶
接々合強度及びりん酸塩処理後の耐食性を、鉄めっき膜
厚との関係を調べたところ、いずれの性質も膜厚の増大
とともに急激に向上し、はＶｌ、５ｇ／ｍ２片面程度で
満足のいく性能を発揮することが判った。The results are shown in FIG. In other words, when we investigated the relationship between non-adhesion to the mold, weld joint strength, and corrosion resistance after phosphate treatment, we found that all properties improved rapidly as the film thickness increased. , was found to exhibit satisfactory performance at a Vl of about 5 g/m2 on one side.
たゾし、りん酸塩処理後の耐食性は約６ｇ／ｍ２片面以
上になると、未反応の鉄が残存するために、母材のアル
ミニウム合金との間でガルバニックコロ−ジョンが進行
し易くなり、逆に耐食性が劣化してくる。従って、アル
ミニウム合金板上に施こす鉄めっき厚さは１．５〜６ｇ
／ｍ２片面が適当であるといえる。However, when the corrosion resistance after phosphate treatment is approximately 6g/m2 or more on one side, galvanic corrosion tends to progress between the aluminum alloy and the base metal because unreacted iron remains. On the contrary, corrosion resistance deteriorates. Therefore, the thickness of iron plating applied on the aluminum alloy plate is 1.5 to 6 g.
/m2 on one side is appropriate.
次に、板厚２ｍｍの上記と同じＡｌ−Ｍｇ合金板をアル
カリ水溶液で上記と同様に脱脂並びに表面活性化し、水
洗後、乾燥したのち、真空蒸着室に導いて基板を２５０
℃に予熱後、鉄を蒸着めっきした。Next, the same Al-Mg alloy plate as above with a thickness of 2 mm was degreased and surface activated with an alkaline aqueous solution in the same manner as above, washed with water, dried, and then introduced into a vacuum deposition chamber to form a substrate at 250° C.
After preheating to ℃, iron was deposited and plated.
この鉄蒸着めっきＡｌ−Ｍｇ合金板の各種性能をめっき
厚さの関係で調べたところ、前記の第１図と同じ結果が
得られた。即ち、蒸着鉄めっきを施こす場合も、めっき
厚さとしては１．５〜６ｇ ／ ｍ ２片面が適するこ
とが判った。When various performances of this iron vapor-deposited Al--Mg alloy plate were investigated in relation to the plating thickness, the same results as those shown in FIG. 1 above were obtained. That is, it was found that even when applying vapor deposited iron plating, a plating thickness of 1.5 to 6 g/m2 on one side is suitable.
又、電気めっき法により鉄−マンガン合金をアルミニウ
ム合金板上に施こした例について説明する。Further, an example in which an iron-manganese alloy is applied on an aluminum alloy plate by electroplating will be explained.
板厚２ｍｍのアルミニウム合金板を上記と同様にアルカ
リ水溶液で脱脂並びに表面活性化を行い、水洗したのち
、Ｆｅ” ５０ ｇ／ Ｉｔ、 Ｍｎ” ２ｇ／Ｉｌを
含む硫酸塩水溶液（ｐＨ：１．８）中でアルミニウム合
金板を陰極とし、ｐｂ金合金陽極として電気めっきを施
こしＦｅ９９％−Ｍｎ １％の合金ｔつきを施こした。An aluminum alloy plate with a thickness of 2 mm was degreased and surface activated with an alkaline aqueous solution in the same manner as above, washed with water, and then treated with a sulfate aqueous solution (pH: 1.8) containing 50 g/It of Fe and 2 g/Il of Mn. ), an aluminum alloy plate was used as a cathode, and electroplating was performed as a PB gold alloy anode to coat an alloy of 99% Fe-1% Mn.
この鉄合金めっきの厚さと各種性能との関係は第１図は
はり同様の結果が得られた。即ち、Ｆｅ−Ｍｎ合金めっ
きの場合も、厚さとしては１．５〜６ｇ／ａ＋”片面が
適することが判った。Regarding the relationship between the thickness of this iron alloy plating and various performances, results similar to those shown in Figure 1 were obtained. That is, in the case of Fe--Mn alloy plating as well, it was found that a thickness of 1.5 to 6 g/a+'' on one side is suitable.
又、上述の電気めっき法による鉄又は鉄・マンガン合金
をアルミニウム合金板上に施こす方法において、以下の
方法についても実施した。Furthermore, in the method of applying iron or iron-manganese alloy onto an aluminum alloy plate by the above-mentioned electroplating method, the following method was also carried out.
板厚２ｍｍのアルミニウム合金板をアルカリ水溶液で脱
脂、エツチング後、脱スマット（６２％ｌｌＮ０．水溶
液、液温：３０℃９時間：１００秒）し、引続きジンケ
ート処理（奥野製薬製サブスターＺＮ−１： ３００Ｔ
ｎｆ／Ｉｌ、液温：２５℃。An aluminum alloy plate with a thickness of 2 mm was degreased and etched with an alkaline aqueous solution, then desmutted (62% 11N0. aqueous solution, liquid temperature: 30°C, 9 hours: 100 seconds), and then zincate treated (Substar ZN-1 manufactured by Okuno Pharmaceutical Co., Ltd.). : 300T
nf/Il, liquid temperature: 25°C.
時間：４０秒）により、Ｚｎを置Ｉｅつきし、その後、
酸性水溶液により表面を活性化し、水洗したのち、Ｆｅ
２＋５０ｇ／ｌを含む硫酸水溶液並びにるＦｅ” ５０
ｇ／ ｌ、 Ｍｎ” ２ ｇ／ ｉ！を含む硫酸水溶
液中でアルミニウム合金板を陰極とし、ｐｂ金合金陽極
としてそれぞれ電気めっきを施し、Ｆｅ並びにＦｅ９９
％−Ｍｎ １％の合金を作成した。Time: 40 seconds) to place Zn, and then
After activating the surface with an acidic aqueous solution and washing with water, Fe
Aqueous sulfuric acid solution containing 2+50g/l of Fe” 50
An aluminum alloy plate was used as a cathode in a sulfuric acid aqueous solution containing Mn” 2 g/l, Mn” 2 g/i!, and electroplated as a PB gold alloy anode.
%-Mn 1% alloy was prepared.
これらの鉄又は鉄合金めっきの厚さと各種性能との関係
は第１図とはゾ同様の結果が得られた。即ち、Ｆｅ又は
Ｆｅ −Ｍｎ合金島つきの厚さとしては、１．５〜６
ｇ／１片面が適することが判った。Regarding the relationship between the thickness of these iron or iron alloy platings and various performances, results similar to those shown in FIG. 1 were obtained. That is, the thickness of the Fe or Fe-Mn alloy islands is 1.5 to 6.
It was found that g/1 single side is suitable.
以上記したように、アルミニウム合金板に鉄又は鉄合金
を極く薄くとつきすることにより、特に自動車用外板等
として使用する際に、■金型成形時に金型への酸化・凝
着が防止でき、■溶接々合時の強度が増大し構造物とし
ての信頼性が増大し、■塗装下地としてのりん酸塩処理
時に微細な粒状のりん酸塩結晶（フォスフォヒライト）
を生成するので、電着塗装時にクレータを生ずることが
ない。As mentioned above, by applying a very thin layer of iron or iron alloy to an aluminum alloy plate, especially when used as an outer panel for automobiles, ■ oxidation and adhesion to the mold during molding can be prevented. ■ Increased strength during welding and increased reliability as a structure; ■ Fine granular phosphate crystals (phosphohylite) during phosphate treatment as a base for painting.
, so no craters are created during electrodeposition coating.
第１図は本発明の一実施例のアルミニウム合金板の効果
を示す図表である。FIG. 1 is a chart showing the effects of an aluminum alloy plate according to an embodiment of the present invention.
Claims (1)
してなることを特徴とするアルミニウム合金板。An aluminum alloy plate comprising an aluminum alloy plate whose surface is coated with iron or an iron alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30728190A JPH04180594A (en) | 1990-11-15 | 1990-11-15 | Aluminum alloy sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30728190A JPH04180594A (en) | 1990-11-15 | 1990-11-15 | Aluminum alloy sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04180594A true JPH04180594A (en) | 1992-06-26 |
Family
ID=17967243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30728190A Pending JPH04180594A (en) | 1990-11-15 | 1990-11-15 | Aluminum alloy sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04180594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6328530B1 (en) * | 1998-03-18 | 2001-12-11 | Hitachi, Ltd. | MG alloy member and its use |
| JP2014037587A (en) * | 2012-08-17 | 2014-02-27 | Ota Mekki Kogyo Co Ltd | Electroplating method of pure iron to aluminum or aluminum alloy material |
-
1990
- 1990-11-15 JP JP30728190A patent/JPH04180594A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6328530B1 (en) * | 1998-03-18 | 2001-12-11 | Hitachi, Ltd. | MG alloy member and its use |
| JP2014037587A (en) * | 2012-08-17 | 2014-02-27 | Ota Mekki Kogyo Co Ltd | Electroplating method of pure iron to aluminum or aluminum alloy material |
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