La-Nd-containing zinc-aluminum alloy wire and production method thereof

Abstract

The invention relates to a multi-element zinc-aluminum alloy wire. The multi-element zinc-aluminum alloy wire comprises, by weight percent, 15%-69% of Al, 0.2-3% of Si, 0.1-5% of Mg, 0.01-0.7% of La, 0.01-0.2% of Nd, not more than 1% of added microelements, and the balance of Zn, wherein the two rare earth elements have a total amount of 0.02-0.76%. The zinc-aluminum alloy wire has a resistivity of 2.0-6.0 Mu Omega / cm, a specific gravity of 3.18-5.69g / cm<3>, and an elongation of 10-25%. The multi-element zinc-aluminum alloy wire is widely applicable to ships, power supply towers, large storage tanks, underground pipelines and facilities such as tunnel frames, and has broad application prospect.

Description

technical field [0001] The invention relates to a multi-element zinc-aluminum alloy wire and a manufacturing method thereof, in particular to a zinc-aluminum alloy wire containing La and Nd and a manufacturing method thereof. Background technique [0002] As we all know, except for a few precious metals, metal materials will undergo chemical and electrochemical reactions with the surrounding medium and suffer from corrosion. Metal corrosion has become the greatest hazard to large steel structures, seriously affecting their safety and life. In addition, the wear and tear caused by various mechanical actions on the metal surface is also extremely serious. A large number of metal components fail due to corrosion and wear, resulting in great waste and loss. According to the statistics of some industrially developed countries, the annual loss of steel due to corrosion and wear accounts for about 10% of the total steel output, and the amount of loss accounts for about 2-4% of th...

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN1718836A adds rare earth cerium (Ce) accounting for 0.05-0.3% of the total weight of the wire to Mg and Al metals to produce a rare earth aluminum-magnesium alloy spray-coated anti-corrosion wire, which is used for steel structures, especially water conservancy The long-term anti-corrosion of engineering gates has achieved positive protection effects, but it uses a single rare earth element cerium (Ce), which affects the further improvement of wire protection performance and is not conducive to popularization and application.

And experiments have shown that, using similar technical solutions, such as when the rare earth content is close to the lower limit, for example, when it is less than 0.08%, the effect of rare earth is extremely small; and when it is greater than 0.1%, the continued increase of the strength of rare earth to the zinc alloy is not obvious. Therefore, the application of this technology is very limited, and it has not been effectively applied to zinc-aluminum alloy wires with thermal sprayed metal coatings.

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