JP2000153390A - Brazing filler metal, and brazed body - Google Patents
Brazing filler metal, and brazed bodyInfo
- Publication number
- JP2000153390A JP2000153390A JP32776498A JP32776498A JP2000153390A JP 2000153390 A JP2000153390 A JP 2000153390A JP 32776498 A JP32776498 A JP 32776498A JP 32776498 A JP32776498 A JP 32776498A JP 2000153390 A JP2000153390 A JP 2000153390A
- Authority
- JP
- Japan
- Prior art keywords
- filler metal
- brazing filler
- brazing
- brazing material
- joining
- 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
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- Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、AlもしくはAl合金
を部材とした接合におけるろう材及びその接合体に関
し、例えばAlもしくはAl合金同士、またはAlもしくはAl
合金と異種材料（例えばセラミック，Steel）の接合に
用いられるろう材ならびに接合体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brazing filler metal and a joined body thereof in joining using Al or an Al alloy as a member, for example, Al or an Al alloy or Al or an Al alloy.
The present invention relates to a brazing material and a joined body used for joining an alloy and a different material (for example, ceramic, steel).
【０００２】[0002]
【従来の技術】従来より、Al合金は耐食性・高熱伝導性
・軽量であることから様々な分野での利用が進んでい
る。特に、自動車部品としては熱交換器への利用や、軽
量化を目的とした動弁系部品への利用が進んでいる。こ
れら用途の場合、AlもしくはAl合金同士の接合，または
異種材料との接合により複合化して用いられる場合が多
く、その接合には、溶接，ろう付，鋳ぐるみ，はんだ付
等の各種手法が用いられている。このうち、ろう付につ
いてはJISに規格されるAl−Si系共晶ろう材（JISBA404
5）や、Cuを添加したろう材（JIS BA4145）が用いられ
ている。2. Description of the Related Art Conventionally, Al alloys have been used in various fields because of their corrosion resistance, high thermal conductivity, and light weight. In particular, as automotive parts, use in heat exchangers and use in valve train parts for weight reduction are increasing. In these applications, it is often used as a composite by joining Al or Al alloys or joining with different materials. Various methods such as welding, brazing, casting, and soldering are used for joining. Have been. Of these, brazing is an Al-Si eutectic brazing material (JISBA404) specified in JIS.
5) and brazing material to which Cu is added (JIS BA4145).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、構造材
として用いる高強度Al合金（例えばジュラルミン）や、
自動車部品で用いられているAl合金（ほとんどは鋳造材
である）の融点は、上述したようなJISろう材の融点よ
り更に低いため、実質上ろう付けは不可能である。な
お、特開平1−202393等の低融点化を図ったろう材も用
いられるが、接合強度や低温性の更なる改善が求められ
ている。However, a high-strength Al alloy (for example, duralumin) used as a structural material,
Since the melting point of Al alloys (mostly cast materials) used in automobile parts is even lower than the melting point of the JIS brazing material as described above, brazing is substantially impossible. Although a brazing filler metal having a low melting point, such as Japanese Unexamined Patent Publication No. 1-2202393, is used, further improvement in bonding strength and low-temperature properties is required.
【０００４】本発明は、前記課題を解決するためになさ
れたものであり、その目的は十分な接合強度を有すると
共に、低温でのろう付けを可能とし、さらには耐食性を
考慮したろう材ならびにそのろう材を用いた接合体を提
供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a brazing material which has sufficient bonding strength, enables brazing at a low temperature, and further takes into consideration corrosion resistance and its brazing material. An object of the present invention is to provide a joined body using a brazing material.
【０００５】[0005]
【課題を解決するための手段及び効果】重量比でSi：1.
4〜3.6%，Cu：10.0〜16.8%，Ag：0.1〜15%，Zn：40以上
〜60%，残部が主としてAlからなるろう材とすること。
さらには、重量比でSi：2.0〜3.0%，Cu：12.0〜15.0%，
Ag：0.1〜10%，Zn：45〜55%，残部が主としてAlからな
ることを特徴とするろう材とすること。さらには、上記
組成に加え、Mgを重量比で0.05〜4.5%を含むろう材とす
ること。さらには、上記組成に加え、Fe，Mn，Ti，Cr，
Niの内、少なくとも1種を総量の重量比で4%以下含むこ
とを特徴とするろう材とすることである。また、それら
のろう材を用いた接合体として本発明を具現化できる。
なお「残部が主としてAlからなる」とは、「残部がAl及
び不可避的不純物からなる」場合のほか、「残部がAl、
不可避的不純物及び更に少量の別成分（不可避的不純物
ではないもの）からなる」場合、「残部がAl及び少量の
別成分（不可避的不純物ではないもの）からなる」場
合、さらには「残部がAlのみからなる」場合も含む趣旨
である。[Means for solving the problems and effects] Si: 1.
4 to 3.6%, Cu: 10.0 to 16.8%, Ag: 0.1 to 15%, Zn: 40 to 60%, the balance being brazing material consisting mainly of Al.
Furthermore, by weight ratio, Si: 2.0 to 3.0%, Cu: 12.0 to 15.0%,
Ag: 0.1 to 10%, Zn: 45 to 55%, balance being mainly composed of Al. Further, in addition to the above composition, a brazing material containing 0.05 to 4.5% by weight of Mg should be used. Further, in addition to the above composition, Fe, Mn, Ti, Cr,
A brazing material characterized in that at least one of Ni is contained in a weight ratio of 4% or less of the total amount. Further, the present invention can be embodied as a joined body using these brazing materials.
In addition, "the remainder is mainly composed of Al" means that "the remainder is composed of Al and inevitable impurities", and "the remainder is Al,
If "consisting of unavoidable impurities and a further small amount of another component (which is not an unavoidable impurity)", "if the balance consists of Al and a small amount of another component (which is not an unavoidable impurity)", or Only ".
【０００６】[0006]
【作用】Cu，SiはほとんどのAl合金に含まれる元素であ
り、ろう材の成分とする事により接合部材に対するろう
材の流動性を向上させ、フラックスレスの接合を可能か
つ強固なものとする。また、これらの元素はろう材の融
点の低下にきわめて有効なものであり、特にZnが融点の
低下には有効である。特開平1−202393等のようにAl-Cu
-Si-Zn系のろう材は、本発明のろう材のように鋳造材・
高強度Al合金の接合を目的としたものである。これらAl
合金を用いた接合体は構造部品として用いられ、その接
合において強度のみならず腐食をも考慮しなければなら
ないが、Znを含むろう材を用いた接合体の接合層は耐食
性に劣ることになる。[Function] Cu and Si are elements contained in most Al alloys, and by using them as components of brazing material, improve the fluidity of the brazing material with respect to the joining members, and make fluxless joining possible and strong. . Further, these elements are extremely effective in lowering the melting point of the brazing material, and in particular, Zn is effective in lowering the melting point. Al-Cu as in JP-A-1-202393
-Si-Zn based brazing filler metal
The purpose is to join high-strength Al alloys. These Al
Joints using alloys are used as structural parts, and not only strength but also corrosion must be taken into account in joining, but the joint layer of joints using brazing material containing Zn will have poor corrosion resistance .
【０００７】これは、熱処理により形成された接合層中
のZn分布部分とAl又はCu等との腐食電位差によるガルバ
ニック腐食が生じるためである（Zn分布部分が電位的に
卑になる）。Znはろう付温度でのAlに対する固溶限が大
きいため、接合層の分布は偏析が見られない均一なもの
である（拡散が生じているので接合界面からの濃度分布
はある）。従って、Zn分布域と非分布域との電位差、つ
まりマクロ的な腐食が生じているととらえることがで
き、Zn分布域の電位を貴にすることが改善策である。こ
の場合、Alに対する固溶限が大きく貴な電位を持つ元素
Agが有効である。This is because galvanic corrosion occurs due to a corrosion potential difference between the Zn distribution portion in the bonding layer formed by the heat treatment and Al or Cu (the Zn distribution portion becomes lower in potential). Since Zn has a large solid solubility limit for Al at the brazing temperature, the distribution of the bonding layer is uniform without segregation (there is a concentration distribution from the bonding interface due to diffusion). Therefore, it can be considered that a potential difference between the Zn distribution region and the non-distribution region, that is, macroscopic corrosion has occurred, and making the potential of the Zn distribution region noble is an improvement measure. In this case, an element with a large solid solubility limit to Al and a noble potential
Ag is effective.
【０００８】次に各元素の添加量について説明すると、
本発明のSi，Cuは、Al-Cu-Si系において状態図的に低い
融点を有する範囲である。また、Znは更に融点を低下さ
せるために添加するが、多すぎると接合強度の低下を招
く。これはZnの拡散により固溶硬化を生じ、接合層が脆
くなるためである。また、Agについても同様である。Next, the addition amount of each element will be described.
Si and Cu of the present invention are in a range having a low melting point in a phase diagram in an Al-Cu-Si system. Further, Zn is added to further lower the melting point, but too much causes a decrease in bonding strength. This is because the solid solution hardening occurs due to the diffusion of Zn, and the bonding layer becomes brittle. The same applies to Ag.
【０００９】以上のことから、請求項1，2で規定される
ように、重量比でSi：1.4〜3.6%，Cu：10.0〜16.8%，A
g：0.1〜15%，Zn：40〜60%，残部が主としてAlからなる
特徴とするろう材とすること、さらには、重量比でSi：
2.0〜3.0%，Cu：12.0〜15.0%，Ag：0.1〜10%，Zn：45〜
55%，残部が主としてAlからなるろう材とすることによ
り、JISに規格されるろう材、例えばBA4145（融点585
℃）より低い580以下の融点を有し（最も低いもので約4
00℃）、さらにZnによる耐食性低下を補うろう材を提供
することが出来る。From the above, as defined in claims 1 and 2, Si: 1.4 to 3.6%, Cu: 10.0 to 16.8%, A
g: 0.1 to 15%, Zn: 40 to 60%, with the balance being mainly composed of Al.
2.0 to 3.0%, Cu: 12.0 to 15.0%, Ag: 0.1 to 10%, Zn: 45 to
By making the brazing material 55%, with the balance being mainly Al, a brazing material conforming to JIS, for example, BA4145 (melting point 585)
℃) lower than 580 (lowest about 4
(00 ° C.), and a brazing material that compensates for a decrease in corrosion resistance due to Zn can be provided.
【００１０】AlもしくはAl合金を接合部材とした接合に
おいて、Alの表面酸化被膜は緻密で強固であるため接合
性を大きく阻害する。従って、酸化被膜を還元する元素
であるMgのろう材への添加が有効とされる。しかしなが
ら、Mgの添加量は多すぎると逆に接合温度において溶融
ろう材自身が酸化してしまい、接合を阻害してしまうこ
とになる。そのため、請求項3において接合性を高めるM
gの添加量を規定している。[0010] In joining using Al or an Al alloy as a joining member, the surface oxide film of Al is dense and strong, so that the joining property is greatly impaired. Therefore, it is effective to add Mg, which is an element that reduces the oxide film, to the brazing filler metal. However, if the added amount of Mg is too large, the molten brazing material itself is oxidized at the joining temperature, and the joining is hindered. Therefore, in claim 3 M
Defines the amount of g added.
【００１１】請求項4において、Fe,Mn,Ti,Cr,Ni（これ
らは不可避的不純物元素である場合もあるが、必ずしも
それに限らず、積極的に添加する場合ももちろん含む）
の内、少うちなくとも1種を総量の重量比で4%以下を含
むことを規定している。Feはろう材の流動性を向上させ
る。MnはAl−Si系ろう材を用いた場合に問題となる接合
部材の浸食を阻止する。また、Mn,Ti,Cr,Niはろう材層
凝固組織を微細化し、接合強度を向上させる。しかしな
がら、これら元素の添加は多すぎると金属間化合物を形
成し、脆くなる又は逆にろう材の融点を高くしてしまう
ので、本発明範囲内で規定するようにしなければならな
い。[0011] In claim 4, Fe, Mn, Ti, Cr, Ni (these may be unavoidable impurity elements, but are not necessarily limited thereto, but also include the case where they are positively added).
It is stipulated that at least one of them contains not more than 4% by weight of the total amount. Fe improves the fluidity of the brazing filler metal. Mn prevents erosion of the joining member, which is a problem when using an Al-Si brazing material. Further, Mn, Ti, Cr and Ni refine the solidification structure of the brazing filler metal layer and improve the bonding strength. However, if these elements are added too much, they form intermetallic compounds and become brittle or conversely increase the melting point of the brazing filler metal, and must be specified within the scope of the present invention.
【００１２】[0012]
【発明の実施の形態】（試験１）表1に示す合金組成を
秤量し、ア−ク溶解炉にて合金化した。得られた合金は
Ar気流中、DTA（示差熱分析）により融点を測定した。
この融点は、溶解終了時の温度とし、ＤＴＡの測定条件
は次のとおりである。 ・標準試料：α−アルミナ ・雰囲気：Ａｒ ・昇温速度：１０℃／ｍｉｎ ・測定温度範囲：Ｒ．Ｔ．〜７００℃ また、表1に示す合金を急冷法により箔化して約60μｍ
とし、JIS A2017（融点513℃）同士の接合にろう材と
して用いた。用いたA2017合金は、JISに規定されている
ように、重量比（％）でSi：0.20〜0.8，Fe：0.7，Cu：
3.5〜4.5，Mn：0.40〜1.0，Mg：0.40〜0.8，Cr：0.10，
Zn：0.25，Zr＋Ti：0.20，残部Al、またその形態・サイ
ズはφ13×L60mmであり、500℃×120min，N2雰囲気でろ
う付を行った。得られた接合体は引張り試験片形状に加
工し、強度を測定した。また、引張り試験片形状にて塩
水噴霧試験（塩化ナトリウム濃度：4W／V%，ｐH：7，噴
霧量：1.5ml／800mm2／h，温度：35℃）を行った後の強
度試験も行った。DESCRIPTION OF THE PREFERRED EMBODIMENTS (Test 1) The alloy compositions shown in Table 1 were weighed and alloyed in an arc melting furnace. The resulting alloy is
The melting point was measured by DTA (differential thermal analysis) in an Ar gas stream.
This melting point is the temperature at the end of dissolution, and the DTA measurement conditions are as follows. • Standard sample: α-alumina • Atmosphere: Ar • Temperature rise rate: 10 ° C / min • Measurement temperature range: R. T. ~ 700 ° C In addition, the alloys shown in Table 1 are made into
JIS A2017 (melting point: 513 ° C) was used as a brazing filler metal. As used in A2017 alloy, the weight ratio (%) of Si: 0.20 to 0.8, Fe: 0.7, Cu:
3.5 to 4.5, Mn: 0.40 to 1.0, Mg: 0.40 to 0.8, Cr: 0.10,
Zn: 0.25, Zr + Ti: 0.20, balance Al. The form and size were φ13 × L60 mm, and brazing was performed at 500 ° C. for 120 min in an N 2 atmosphere. The obtained joined body was processed into a tensile test piece shape, and the strength was measured. In addition, a strength test after a salt spray test (sodium chloride concentration: 4 W / V%, pH: 7, spray amount: 1.5 ml / 800 mm 2 / h, temperature: 35 ° C) in the form of a tensile test piece was also performed. Was.
【００１３】結果を表1に示す。本発明範囲内のろう材
を用いることにより、接合強度及び耐食性に優れた接合
が可能となる。なお、比較例10,12,15で「接合せず」と
あるのは、500℃でろう材が溶融しないからである。The results are shown in Table 1. By using the brazing material within the scope of the present invention, joining excellent in joining strength and corrosion resistance becomes possible. In Comparative Examples 10, 12, and 15, "not joined" means that the brazing material does not melt at 500 ° C.
【００１４】[0014]
【表１】 [Table 1]
【００１５】（試験2）また試験1と同様に表2に示す合
金を作製し、接合後のみの引張り試験を行った。Mgの添
加により、ろう材の融点は低下し、本発明の範囲内であ
れば接合強度は上昇するが、それより多い場合に接合強
度が低くなる傾向がある。また、Fe、Cr、Ti、Ni、Mnに
おいても、本発明の範囲内であれば強度は上昇している
が、多い場合に若干低下している。(Test 2) In the same manner as in Test 1, alloys shown in Table 2 were prepared, and a tensile test was performed only after joining. With the addition of Mg, the melting point of the brazing material decreases, and if it is within the range of the present invention, the joining strength increases, but if it is more than this, the joining strength tends to decrease. Further, the strength of Fe, Cr, Ti, Ni, and Mn also increases within the range of the present invention, but slightly decreases when the amount is large.
【００１６】[0016]
【表２】 [Table 2]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２３Ｋ 103:10 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // B23K 103: 10
Claims (5)
8%，Ag：0.1〜15%，Zn：40〜60%，残部が主としてAlか
らなることを特徴とするろう材。1. Si: 1.4 to 3.6% by weight, Cu: 10.0 to 16.
8%, Ag: 0.1 ~ 15%, Zn: 40 ~ 60%, the balance being mainly composed of Al.
0%，Ag：0.1〜10%，Zn：45〜55%，残部が主としてAlか
らなることを特徴とするろう材。2. The weight ratio of Si: 2.0 to 3.0% and Cu: 12.0 to 15.
0%, Ag: 0.1-10%, Zn: 45-55%, the balance being mainly composed of Al.
5%を含むことを特徴とする請求項1又は2に記載のろう
材。3. In addition to the above composition, Mg is added in a weight ratio of 0.05 to 4.
3. The brazing material according to claim 1, comprising 5%.
内、少なくとも1種を総量の重量比で4%以下含むことを
特徴とする請求項1ないし3のいずれかに記載のろう材。4. The method according to claim 1, wherein in addition to the above composition, at least one of Fe, Mn, Ti, Cr, and Ni is contained in an amount by weight of 4% or less. Brazing material.
う材を用いて接合されたことを特徴とする接合体。5. A joined body which is joined using the brazing material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32776498A JP2000153390A (en) | 1998-11-18 | 1998-11-18 | Brazing filler metal, and brazed body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32776498A JP2000153390A (en) | 1998-11-18 | 1998-11-18 | Brazing filler metal, and brazed body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000153390A true JP2000153390A (en) | 2000-06-06 |
Family
ID=18202734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32776498A Pending JP2000153390A (en) | 1998-11-18 | 1998-11-18 | Brazing filler metal, and brazed body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000153390A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006521209A (en) * | 2003-03-29 | 2006-09-21 | グリーロ ヴェルケ アクチェンゲゼルシャフト | Method for inert gas welding or inert gas soldering of workpieces containing similar or dissimilar metals or alloys with additional Zn / Al metal |
| JP2008137034A (en) * | 2006-11-30 | 2008-06-19 | Honda Motor Co Ltd | Brazing filler metal and brazing method |
| JP2009235503A (en) * | 2008-03-27 | 2009-10-15 | Taiheiyo Cement Corp | JOINING MATERIAL FOR Al ALLOY-CERAMICS COMPOSITE MATERIAL, AND JOINED BODY USING THE SAME |
| US20100252241A1 (en) * | 2009-04-02 | 2010-10-07 | Mcdermott Chris | Ceramic coated automotive heat exchanger components |
| US9023481B2 (en) | 2001-10-02 | 2015-05-05 | Henkel Ag & Co. Kgaa | Anodized coating over aluminum and aluminum alloy coated substrates and coated articles |
| CN110978665A (en) * | 2019-11-26 | 2020-04-10 | 上海华峰铝业股份有限公司 | Low-melting-point brazing layer anti-cracking multilayer aluminum alloy and preparation method thereof |
-
1998
- 1998-11-18 JP JP32776498A patent/JP2000153390A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9023481B2 (en) | 2001-10-02 | 2015-05-05 | Henkel Ag & Co. Kgaa | Anodized coating over aluminum and aluminum alloy coated substrates and coated articles |
| JP2006521209A (en) * | 2003-03-29 | 2006-09-21 | グリーロ ヴェルケ アクチェンゲゼルシャフト | Method for inert gas welding or inert gas soldering of workpieces containing similar or dissimilar metals or alloys with additional Zn / Al metal |
| EP1608482B1 (en) | 2003-03-29 | 2016-10-05 | Grillo-Werke AG | Welding, soldering or brazing method under a protective atmosphere of metallic workpieces using a zn/al filler material |
| EP1608482B2 (en) † | 2003-03-29 | 2019-11-13 | Grillo-Werke AG | Welding, soldering or brazing method under a protective atmosphere of metallic workpieces using a zn/al filler material |
| JP2008137034A (en) * | 2006-11-30 | 2008-06-19 | Honda Motor Co Ltd | Brazing filler metal and brazing method |
| JP2009235503A (en) * | 2008-03-27 | 2009-10-15 | Taiheiyo Cement Corp | JOINING MATERIAL FOR Al ALLOY-CERAMICS COMPOSITE MATERIAL, AND JOINED BODY USING THE SAME |
| US20100252241A1 (en) * | 2009-04-02 | 2010-10-07 | Mcdermott Chris | Ceramic coated automotive heat exchanger components |
| JP2012522965A (en) * | 2009-04-02 | 2012-09-27 | ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェン | Automotive heat exchanger parts coated with ceramic |
| US9701177B2 (en) * | 2009-04-02 | 2017-07-11 | Henkel Ag & Co. Kgaa | Ceramic coated automotive heat exchanger components |
| CN110978665A (en) * | 2019-11-26 | 2020-04-10 | 上海华峰铝业股份有限公司 | Low-melting-point brazing layer anti-cracking multilayer aluminum alloy and preparation method thereof |
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