Germanium-contained (Ge-contained) corrosion-resistant aluminum-based solder

A corrosion-resistant aluminum alloy and brazing material technology, which is applied in the field of aluminum alloy welding, can solve problems such as accelerating the corrosion of aluminum substrates, reducing the strength of joints, and reducing the melting point of brazing filler metals, so as to reduce the cost of brazing filler metals, facilitate operation, and process consumption. Effect
CN103008908AInactive Publication Date: 2013-04-03ZHEJIANG UNIV +1
5 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2013-04-03
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses germanium-contained (Ge-contained) corrosion-resistant aluminum-based solder. The solder comprises the following components in mass percent: 6.5 percent of silicon (Si), 15.0 percent of copper (Cu), 0.1-8.0 percent of Ge, 6.0 percent of stannum (Sn), 1.0 percent of cerium (Ce) and the balance aluminum (Al). The solder is prepared by adopting the rapid cooling technique. The melting point of the solder is lower than 520 DEG C, and the brazing temperature is 540-550 DEG C. The Ge-contained corrosion-resistant aluminum-based solder is suitable for brazing of aluminum alloy of which the solidus is higher than 550 DEG C, such as flame brazing, induction brazing, furnace brazing and gas shield brazing. The solder is matched with a QJ201 brazing aluminum plate 3003, so that the shear strength of a brazed joint is higher than 82MPa. When the percentage composition of the Ge is 2.5, the corrosion resistance of solder alloy is optimal, and the corrosion current density is 3.562muAcm<-2>.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of aluminum alloy welding, in particular to a Ge-containing corrosion-resistant aluminum alloy solder and a preparation method thereof. Background technique

[0002] Aluminum alloy has the advantages of high specific strength and corrosion resistance, and has been widely used in industries such as automobiles, ships, petrochemicals, and aerospace. Aluminum alloy welding mainly refers to the welding of deformed aluminum alloys. Deformed aluminum alloys are divided into non-heat-treatable aluminum alloys (that is, anti-rust aluminum) and heat-treatable aluminum alloys. Among them, non-heat-treatable aluminum alloys are the main aluminum alloys used for welding structures. .

[0003] Compared with heat-treatable and strengthened aluminum alloys (such as duralumin and wrought aluminum), anti-rust aluminum has good weldability, and a series of difficulties will be encountered in the welding process, such as weld...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More