CN105252162A - Aluminum-copper brazing material with good corrosion resistance - Google Patents
Aluminum-copper brazing material with good corrosion resistance Download PDFInfo
- Publication number
- CN105252162A CN105252162A CN201510769279.4A CN201510769279A CN105252162A CN 105252162 A CN105252162 A CN 105252162A CN 201510769279 A CN201510769279 A CN 201510769279A CN 105252162 A CN105252162 A CN 105252162A
- Authority
- CN
- China
- Prior art keywords
- brazing material
- aluminum
- corrosion resistance
- copper
- good corrosion
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Abstract
The invention discloses an aluminum-copper brazing material with good corrosion resistance. The brazing material comprises, by mass, 7%-8.5% of Zn, 0.2%-0.49% of Al, 0.55%-0.7% of Ag, 0-0.1% of P, 0-1% of Ni, 5.5%-8.5% of Bi, 1.35%-2.25% of rare earth elements, and the balance Sn. According to the aluminum-copper brazing material, the content of Zn in the brazing material is increased, an Al-Zn solid solution region is enlarged, the dissolution degree of an aluminum substrate is increased, the bonding strength of the brazing material on an aluminum interface is improved, and therefore an aluminum-copper brazing connector has good mechanical performance. The element Bi in the brazing material can lower the surface tension of the liquid-state brazing material in the brazing process, and therefore the wettability of the brazing material on the aluminum substrate and a copper substrate is improved, and the wettability of the brazing material on the aluminum substrate is obviously superior to the wettability of the brazing material on the copper substrate.
Description
Technical field
The present invention relates to a kind of aluminum bronze brazing material with good corrosion resistance, belong to new material technology field.
Background technology
In recent years, because copper shortage of resources causes copper valency to remain high, in order to reduce costs, the aluminium adopting electric conductivity and thermal conductivity and copper more close in the industries such as refrigeration, electric power transfer, machine-building, electronic manufacture replaces copper.In the application of aluminium for copper, the problem that aluminum bronze dissimilar metal connects is particularly important.
At present, the major way of aluminum bronze soldering is solder brazing (brazing temperature is higher than 450 DEG C), use aluminium silicon brazing filler metal, such as the solder of Al-12.6wt.%Si eutectic solder (eutectic temperature 577 DEG C) and interpolation third element, usually adopt heating in vacuum or automatic flame heating.But, solder brazing also exists many deficiencies: 1) fusing point of aluminium is 660 DEG C, it is improper that brazing temperature controls, aluminum pipe can local meltingly cause tube wall thinning, in addition, higher brazing temperature can aggravate the ablation of soldered fitting, and particularly the ablation of aluminium side is more serious, thus have impact on the mechanical property of soldered fitting; 2) brazing temperature is generally more than 500 DEG C, and Al, Cu atoms permeating, than very fast, easily form the CuAl2 intermetallic compound of fragility, causes soldering joint strength to reduce; 3) oxide-film on the general brazing flux removal aluminium surface using corrosivity strong, the residue of pricker after-welding brazing flux has strong corrosivity, causes corrosion and be difficult to cleaning to soldered fitting; 4) vacuum brazing, gas brazing are higher to technical requirement, and the quality of soldered fitting can not ensure.
Summary of the invention
The object of the invention is to, a kind of aluminum bronze brazing material with good corrosion resistance is provided, to the oxidation of matrix material and ablation effect little; Can select different solders as the case may be, obtain the soldered fitting of varying strength and different operating temperature requirements, strong adaptability, flexibility are good, can meet the requirement that environmental protection is under the new situation unleaded to soldering.
A kind of aluminum bronze brazing material with good corrosion resistance provided by the invention, brazing material comprises following component by mass percentage: Zn:7-8.5%, Al:0.2-0.49%, Ag:0.55-0.7%, P:0-0.1%, Ni:0-1%, Bi:5.5-8.5%, rare earth element: 1.35-2.25%, all the other are Sn.
Further restriction technical scheme of the present invention: the aforesaid aluminum bronze brazing material with good corrosion resistance, the chemical composition mass percentage of described rare earth element is: Nd:13-17%, Er:8-14%, Pr:0-9%, Dy:0-5%, and surplus is La.
The aforesaid aluminum bronze brazing material with good corrosion resistance, described brazing material comprises following component by mass percentage: Zn:7%, Al:0.2%, Ag:0.55%, P:0.1%, Ni:0.5%, Bi:5.5%, rare earth element: 1.85%, and all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:13%, Er:8%, Pr:3%, Dy:2%, and surplus is La.
Further, the aforesaid aluminum bronze brazing material with good corrosion resistance, described brazing material comprises following component by mass percentage: Zn:8.5%, Al:0.49%, Ag:0.7%, P:0.1%, Ni:1%, Bi:8.5%, rare earth element: 2.25%, all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:17%, Er:14%, Pr:9%, Dy:5%, and surplus is La.
Beneficial effect of the present invention: the content that invention increases Zn in solder, increases the dissolution degree of Al-Zn solution area and aluminium base, improves its bond strength on aluminium interface, thus makes aluminum bronze soldered fitting have good mechanical property.The surface tension of liquid solder when Bi element can reduce soldering in solder, thus improve the wetability of solder on aluminium and copper base, and its wetability on aluminium base is obviously better than the wetability on copper base; The interpolation of Bi simultaneously effectively can reduce the fusing point of solder, and the interpolation of Al or Ni element all improves the non-oxidizability of solder; Meanwhile, add the microstructure of all right obviously refinement solder of Al element, add the decay resistance that Ni element can also improve solder.
Detailed description of the invention
embodiment 1
The present embodiment provides a kind of aluminum bronze brazing material with good corrosion resistance, and described brazing material comprises following component by mass percentage: Zn:7%, Al:0.2%, Ag:0.55%, P:0.1%, Ni:0.5%, Bi:5.5%, rare earth element: 1.85%, all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:13%, Er:8%, Pr:3%, Dy:2%, and surplus is La.
embodiment 2
The present embodiment provides a kind of aluminum bronze brazing material with good corrosion resistance, and described brazing material comprises following component by mass percentage: Zn:8.5%, Al:0.49%, Ag:0.7%, P:0.1%, Ni:1%, Bi:8.5%, rare earth element: 2.25%, all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:17%, Er:14%, Pr:9%, Dy:5%, and surplus is La.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. one kind has the aluminum bronze brazing material of good corrosion resistance, it is characterized in that: brazing material comprises following component by mass percentage: Zn:7-8.5%, Al:0.2-0.49%, Ag:0.55-0.7%, P:0-0.1%, Ni:0-1%, Bi:5.5-8.5%, rare earth element: 1.35-2.25%, all the other are Sn.
2. the aluminum bronze brazing material with good corrosion resistance according to claim 1, it is characterized in that: the chemical composition mass percentage of described rare earth element is: Nd:13-17%, Er:8-14%, Pr:0-9%, Dy:0-5%, surplus is La.
3. the aluminum bronze brazing material with good corrosion resistance according to claim 2, it is characterized in that: described brazing material comprises following component by mass percentage: Zn:7%, Al:0.2%, Ag:0.55%, P:0.1%, Ni:0.5%, Bi:5.5%, rare earth element: 1.85%, all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:13%, Er:8%, Pr:3%, Dy:2%, and surplus is La.
4. the aluminum bronze brazing material with good corrosion resistance according to claim 2, it is characterized in that: described brazing material comprises following component by mass percentage: Zn:8.5%, Al:0.49%, Ag:0.7%, P:0.1%, Ni:1%, Bi:8.5%, rare earth element: 2.25%, all the other are Sn; The chemical composition mass percentage of its rare earth elements is: Nd:17%, Er:14%, Pr:9%, Dy:5%, and surplus is La.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769279.4A CN105252162A (en) | 2015-11-12 | 2015-11-12 | Aluminum-copper brazing material with good corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769279.4A CN105252162A (en) | 2015-11-12 | 2015-11-12 | Aluminum-copper brazing material with good corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105252162A true CN105252162A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510769279.4A Pending CN105252162A (en) | 2015-11-12 | 2015-11-12 | Aluminum-copper brazing material with good corrosion resistance |
Country Status (1)
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| CN (1) | CN105252162A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392365A (en) * | 2016-11-11 | 2017-02-15 | 江苏师范大学 | 3D packaging interconnection solder for MEMS devices |
| CN108213764A (en) * | 2017-12-13 | 2018-06-29 | 华南理工大学 | A kind of tin base leadless soldering-flux alloy for effectively reducing base material meltage |
| CN108326472A (en) * | 2018-03-08 | 2018-07-27 | 合肥盛邦电器有限公司 | A kind of Cu-AL pipe mouth brush solder flux |
| CN109226992A (en) * | 2018-08-31 | 2019-01-18 | 西安理工大学 | A kind of method that low temperature diffusion prepares Cu-Al bimetal material |
| CN114346520A (en) * | 2021-11-23 | 2022-04-15 | 西安理工大学 | Sn-Zn-Bi-In lead-free solder and preparation method thereof |
-
2015
- 2015-11-12 CN CN201510769279.4A patent/CN105252162A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392365A (en) * | 2016-11-11 | 2017-02-15 | 江苏师范大学 | 3D packaging interconnection solder for MEMS devices |
| CN108213764A (en) * | 2017-12-13 | 2018-06-29 | 华南理工大学 | A kind of tin base leadless soldering-flux alloy for effectively reducing base material meltage |
| CN108326472A (en) * | 2018-03-08 | 2018-07-27 | 合肥盛邦电器有限公司 | A kind of Cu-AL pipe mouth brush solder flux |
| CN109226992A (en) * | 2018-08-31 | 2019-01-18 | 西安理工大学 | A kind of method that low temperature diffusion prepares Cu-Al bimetal material |
| CN114346520A (en) * | 2021-11-23 | 2022-04-15 | 西安理工大学 | Sn-Zn-Bi-In lead-free solder and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |
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| WD01 | Invention patent application deemed withdrawn after publication |