JPS6285937A - Aluminum alloy composite material having excellent corrosionresistance - Google Patents
Aluminum alloy composite material having excellent corrosionresistanceInfo
- Publication number
- JPS6285937A JPS6285937A JP20259985A JP20259985A JPS6285937A JP S6285937 A JPS6285937 A JP S6285937A JP 20259985 A JP20259985 A JP 20259985A JP 20259985 A JP20259985 A JP 20259985A JP S6285937 A JPS6285937 A JP S6285937A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- composite material
- alloy composite
- corrosionresistance
- aluminum
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 19
- 239000002131 composite material Substances 0.000 title claims description 12
- 239000011162 core material Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002747 voluntary effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野１
本発明は耐孔蝕性に優れたアルミニウム合金複合材に関
し、さらに詳しくは、水環境、特に海水等アルミニウム
またはアルミニツム合金に対して腐蝕性の厳しい使用環
境において優れた耐孔蝕性て利用が多い耐孔蝕性に優れ
たアルミニウム合金複合材に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an aluminum alloy composite material with excellent pitting resistance. This invention relates to an aluminum alloy composite material with excellent pitting resistance, which is often used because of its excellent pitting resistance in severe usage environments.
［従来技術Ｊ
一般的に、アルミニウムおよびアルミニウム合金はその
表面に保護性のある酸化皮膜を形成するため、大気雰囲
気においては実用上優れた耐蝕性を示し、日用品等に幅
広く使用されている。[Prior Art J In general, aluminum and aluminum alloys form a protective oxide film on their surfaces, so they exhibit excellent corrosion resistance in practical use in atmospheric conditions, and are widely used in daily necessities.
しかしながら、水環境において使用される用途において
は、Ｊ−）Ｓで規定されている３×××系（ＡＩ Ｍ
ｎＭＳＡｌ−Ｍｎ−ＭｇＭ）、５ＸＸＸ系（ＡＩ−Ｍｇ
系）或いは６×××系（ＡＩ−Ｍｇ Ｓｉ系）の各合
金が比較的良好な耐蝕性を示すので使用される場合があ
るが、必ずしも満足できるものではなく、特に耐孔蝕性
に関して改善が要望されている。However, in applications used in water environments, the 3×XX system (AI M
nMSAl-Mn-MgM), 5XXX system (AI-Mg
Although alloys of the 6×XX series (AI-Mg Si series) or the 6×XX series (AI-Mg Si series) are sometimes used because they exhibit relatively good corrosion resistance, they are not necessarily satisfactory, and there is a need for improvement, especially in terms of pitting resistance. is requested.
［発明が解決しようとする問題点Ｊ
本発明は上記に説明した従来のアルミニウム合金におけ
る耐蝕性に鑑み、本発明者が鋭意研究を行なった結果、
水環境、特に海水等のアルミニウム巻金を一廿１ｆまｆ
ｉｄ＋社箇は１い口倍を一松いプ伸田しても、優れた耐
孔蝕性を示すアルミニウム合金複合材を開発したのであ
る。[Problems to be Solved by the Invention J] The present invention has been made as a result of extensive research conducted by the present inventor in view of the corrosion resistance of the conventional aluminum alloys explained above.
Water environment, especially seawater, etc. Aluminum coils should be kept for 1 ft.
id+shako has developed an aluminum alloy composite material that exhibits excellent pitting corrosion resistance even if it is made by a single layer.
［問題点を解決するための手段１
本発明に係る耐孔蝕性に優れたアルミニウム合金複合材
の特徴とするところは、
Ｃｕ Ｏ，０５−０，８ＩＩｌｔ％、Ｍｎ ０．５〜１
．５ｗｔ％、Ｃｒ Ｏ，０５〜０．３５ｕ＋ｔ％
を含有し、残部ＡＩおよブ不可避不純物からなるアルミ
ニウム合金
を芯材とし、
Ａｌ純度９９．５ｕ＋ｔ％以上で、残部不可避不純物か
らなるアルミニウム
を皮材とすることにある。[Means for Solving the Problems 1] The aluminum alloy composite material with excellent pitting resistance according to the present invention is characterized by: CuO, 05-0,8IIt%, Mn 0.5-1
．． The core material is an aluminum alloy containing 5wt% CrO, 05~0.35u+t%, and the balance is AI and unavoidable impurities, and the skin material is aluminum with an Al purity of 99.5u+t% or more and the remainder consisting of unavoidable impurities. It is to do so.
本発明に係る耐孔蝕性に優れたアルミニウム合金複合材
について、以下詳細に説明する。The aluminum alloy composite material with excellent pitting resistance according to the present invention will be described in detail below.
先ず、本発明に係る耐孔蝕性に優れたアルミニウム合金
複合材の芯材およ１皮材の含有成分および成分割合につ
いて説明する。First, the components and component ratios of the core material and the first skin material of the aluminum alloy composite material having excellent pitting resistance according to the present invention will be explained.
（１）芯材について。(1) Regarding the core material.
Ｃｕはアルミニウム合金な１汽化学的に責とし、かつ、
強度を高める元素であり、含有量が０．０５ｗｔ％未満
ではこのような効果は充分ではなく、また、０，８ｕ＋
ｔ％を越えて含有されると粒界腐蝕感受性が増大するよ
うになる。よって、Ｃｕ含有量はＯ，ＯＳ〜０．８社％
とする。Cu is an aluminum alloy chemically responsible, and
It is an element that increases strength, and if the content is less than 0.05 wt%, this effect is not sufficient;
If the content exceeds t%, susceptibility to intergranular corrosion increases. Therefore, the Cu content is O,OS~0.8%
shall be.
ＭｎはＣｕと同様にアルミニウム合金を電気化学的に責
とし、かつ、不可避的に含有してす箋る不純物のＦｅを
Ａｌ１（ＭｎＦｅ）の形として固定するので、Ｆｅが軟
点となり発生する孔蝕を低減でき、さらに、耐孔蝕性を
改善すると同時に強度を高める元素であり、含有量が０
，５ｗｔ％未満ではこのような効果は小さく、また、１
．５ｗｔ％を越えて含有されると粗大な金属間化合物が
生成して欠陥の原因となる。よって、Ｍｎ含有量は０．
５〜１．５ｕ＋ｔ％とする。Like Cu, Mn electrochemically affects aluminum alloys and fixes Fe, an impurity that is inevitably contained, in the form of Al1 (MnFe), so Fe becomes a soft point and the pores that occur are It is an element that can reduce corrosion, improve pitting resistance, and increase strength at the same time, and its content is 0.
, less than 5 wt%, this effect is small, and 1
．． If the content exceeds 5 wt%, coarse intermetallic compounds will be formed and cause defects. Therefore, the Mn content is 0.
5 to 1.5u+t%.
Ｃｒは強度を高めると共に耐蝕性を向上させる元素であ
り、含有量がＱ、Ｑ５ｗＬ％未満ではこの効果は認めら
れず、また、０，３５ｗｔ％を越えて含有されるとその
効果は飽和してしまい無意味であり、さらに、Ｍｎと同
じく粗大な金属間化合物を生成するので好ましくない。Cr is an element that increases strength and improves corrosion resistance, and this effect is not observed when the content is less than 5wL%, and the effect is saturated when the content exceeds 0.35wt%. It is meaningless and, like Mn, produces coarse intermetallic compounds, which is not preferable.
よって、Ｃｒ含有量は０．０５〜０．３５ＩＩ＋ｔ％と
する。Therefore, the Cr content is set to 0.05 to 0.35II+t%.
これらの必須成分以外に、Ｔｉ等の鋳造組織を微細化し
鋳造性を向上させる元素を含有させることができる。In addition to these essential components, elements such as Ti that refine the casting structure and improve castability can be included.
なお、Ｆｅは不可避不純物であり、含有量は０．３ｗｔ
％以下に規制することが望ましい。Note that Fe is an unavoidable impurity, and the content is 0.3wt.
It is desirable to limit the amount to less than %.
（２）皮材について。(2) Regarding the leather material.
純度９９．５ｗｔ％以上の純アルミニウムを、上記説明
したアルミニウム合金芯材に皮材として被覆することに
より、耐孔蝕性を飛躍的に改善したものであり、アルミ
ニウム純度を９９，５ｗｔ％以上としたのは、上記説明
した芯材より電位を卑とす）ためであり、そして、純度
が９９，５ｗｔ％未満であると自己腐蝕消耗速度が大き
くなるからである。この皮材の被覆率は５〜１５％とす
るのがよく、強度、耐蝕性を共に所望の水準とし、被覆
率が５％未満では犠牲陽極層としての機能が小さく、１
５％を越えると強度が低下する。なお、この皮材は芯材
の片面に被覆しても、また、芯材の［実施例１
次に、本発明に係る耐孔蝕性に優れたアルミニウム合金
複合材の実施例を説明する。By coating pure aluminum with a purity of 99.5 wt% or more as a skin material on the aluminum alloy core material described above, the pitting resistance has been dramatically improved. This is because the potential is made more base than the core material described above), and when the purity is less than 99.5 wt%, the self-corrosion consumption rate increases. The coverage rate of this skin material is preferably 5 to 15% to achieve the desired level of both strength and corrosion resistance.If the coverage rate is less than 5%, the function as a sacrificial anode layer is small;
If it exceeds 5%, the strength will decrease. Note that even if this skin material is coated on one side of the core material, the core material [Example 1] Next, an example of the aluminum alloy composite material having excellent pitting resistance according to the present invention will be described.
実施例
＠１表に示す含有成分および成分割合の芯材のアルミニ
ウム合金および皮材を常法により溶製し、猜造後、熱間
圧延により芯材を２７ｍｍ、皮材を３龍の厚さとした後
、熱間で夫々を重ねて芯材に皮材を被覆し、熱間圧延に
より３■の厚さとし、その後冷間圧延により０．５１の
厚さとした。Example @ 1 An aluminum alloy for the core material and a skin material having the ingredients and proportions shown in Table 1 were melted by a conventional method, and after smelting, the core material was 27 mm thick and the skin material was 3 mm thick by hot rolling. After that, the core material was covered with a skin material by hot rolling, and the thickness was 3 mm by hot rolling, and then the thickness was 0.51 mm by cold rolling.
この０．５１８１１１厚さの冷開圧延板を７ ｅｍＸ
１５ ｃｍの寸法に切り出し、ＪＩＳＺ２３７１に規定
されている塩水噴霧試験を実施した。This cold-open rolled plate with a thickness of 0.518111 was
It was cut out to a size of 15 cm and subjected to a salt spray test as specified in JIS Z2371.
２０００時間経過後の各試験板について、腐蝕生成物を
３０％ＨＮＯ，溶液で除去し、顕＠鏡観察により孔蝕深
さを調査した。耐孔蝕性の評価は孔蝕深さにより次のよ
うに評価した。For each test plate after 2000 hours, corrosion products were removed with a 30% HNO solution, and the depth of pitting was investigated by microscopic observation. The pitting resistance was evaluated based on the pitting depth as follows.
最大孔蝕深さ 評価
０．０５μ以下 ◎
０．１〜０−１５μ未満 Δこの第１表か
に示す通り、本発明に係る耐孔蝕性に優れたアルミニツ
ム合金複合材は比較例より大幅に耐孔蝕性が改善されて
いることがわかる。Maximum pitting depth Evaluation 0.05 μ or less ◎ 0.1 to less than 0-15 μ Δ As shown in Table 1, the aluminum alloy composite material with excellent pitting resistance according to the present invention has a corrosion resistance significantly lower than that of the comparative example. It can be seen that the pitting resistance is improved.
［発明の効果１
以上説明したように、本発明に係る耐孔蝕性に優れたア
ルミニウム合金複合材は上記の構成であるから、優れた
耐孔蝕性を有し、強度をも配慮したもので、船舶、車輌
、建設、食品等の分野において広く利用できるものであ
る。[Effect of the invention 1 As explained above, the aluminum alloy composite material with excellent pitting resistance according to the present invention has the above structure, so it has excellent pitting corrosion resistance and also takes into consideration strength. It can be widely used in the fields of ships, vehicles, construction, food, etc.
手続補正書（自発）
昭和６０年１０月１６日
昭和６０年特許願第２０２５９９号
２、発明の名称
耐孔蝕性に優れたアルミニウム合金複合材３、補正をす
る者
事件との関係 特許出願人
住所 神戸市中央区脇浜町１丁目３番１８号名称 （１
１９） 株式会社 神戸製鋼所代表者 −牧 冬
彦
４、代理人
住所 東京都江東区南砂２丁目２番１５号藤和東陽町コ
ープ９０１号
５、補正命令の日付 （自発）
６、補正の対象
（１）明細書の発明の詳細な説明の欄
７、補正の内容
別紙の通り
（１）明細書第３頁２０行の「１汽化学的」を「電気化
学的」と補正する。Procedural amendment (voluntary) October 16, 1985 Patent Application No. 202599 of 1985 2, Title of invention Aluminum alloy composite material with excellent pitting corrosion resistance 3, Person making the amendment Relationship with the case Patent applicant Address: 1-3-18 Wakihama-cho, Chuo-ku, Kobe Name (1)
19) Representative of Kobe Steel, Ltd. - Fuyuhiko Maki 4, Agent address: 901-5 Fujiwa Toyocho Co-op, 2-2-15 Minamisuna, Koto-ku, Tokyo Date of amendment order (voluntary) 6. Subject of amendment ( 1) As shown in Column 7 of Detailed Description of the Invention of the Specification, Contents of the Amendment (1) "1st steam chemical" on page 3, line 20 of the specification is amended to "electrochemical".
（２）明細書第８頁の第１表を次の通り補正する。(2) Table 1 on page 8 of the specification is amended as follows.
Claims (1)
％、Ｃｒ０．０５〜０．３５ｗｔ％ を含有し、残部Ａｌおよび不可避不純物からなるアルミ
ニウム合金 を芯材とし、 Ａｌ純度９９．５ｗｔ％以上で、残部不可避不純物から
なるアルミニウム を皮材としたことを特徴とする耐孔蝕性に優れたアルミ
ニウム合金複合材。[Claims] Cu0.05-0.8wt%, Mn0.5-1.5wt
%, Cr 0.05 to 0.35 wt%, the balance consisting of Al and unavoidable impurities as the core material, and the skin material being aluminum with an Al purity of 99.5 wt% or more and the balance consisting of unavoidable impurities. An aluminum alloy composite material with excellent pitting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20259985A JPS6285937A (en) | 1985-09-13 | 1985-09-13 | Aluminum alloy composite material having excellent corrosionresistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20259985A JPS6285937A (en) | 1985-09-13 | 1985-09-13 | Aluminum alloy composite material having excellent corrosionresistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6285937A true JPS6285937A (en) | 1987-04-20 |
| JPS6249182B2 JPS6249182B2 (en) | 1987-10-17 |
Family
ID=16460126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20259985A Granted JPS6285937A (en) | 1985-09-13 | 1985-09-13 | Aluminum alloy composite material having excellent corrosionresistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6285937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62230494A (en) * | 1986-03-31 | 1987-10-09 | Sky Alum Co Ltd | Aluminum alloy core material for brazing |
| WO2018034292A1 (en) * | 2016-08-17 | 2018-02-22 | 株式会社Uacj | Aluminum-alloy-clad plate for heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644742A (en) * | 1979-09-19 | 1981-04-24 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
| JPS57158350A (en) * | 1981-03-24 | 1982-09-30 | Furukawa Alum Co Ltd | Aluminum alloy clad material with pitting corrosion resistance |
-
1985
- 1985-09-13 JP JP20259985A patent/JPS6285937A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644742A (en) * | 1979-09-19 | 1981-04-24 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
| JPS57158350A (en) * | 1981-03-24 | 1982-09-30 | Furukawa Alum Co Ltd | Aluminum alloy clad material with pitting corrosion resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62230494A (en) * | 1986-03-31 | 1987-10-09 | Sky Alum Co Ltd | Aluminum alloy core material for brazing |
| WO2018034292A1 (en) * | 2016-08-17 | 2018-02-22 | 株式会社Uacj | Aluminum-alloy-clad plate for heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6249182B2 (en) | 1987-10-17 |
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