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Zinc-aluminum-magnesium-rare earth multi-element alloy material and preparation method thereof

A multi-element alloy, zinc-aluminum-magnesium technology, applied in metal material coating process, coating, melt spraying and other directions, can solve problems such as instability

Inactive Publication Date: 2012-07-04
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Zn-Al-Mg coatings exhibit strong self-sealing, but are still unstable

Method used

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  • Zinc-aluminum-magnesium-rare earth multi-element alloy material and preparation method thereof
  • Zinc-aluminum-magnesium-rare earth multi-element alloy material and preparation method thereof
  • Zinc-aluminum-magnesium-rare earth multi-element alloy material and preparation method thereof

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Experimental program
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Embodiment Construction

[0043] 1. Preparation of zinc-aluminum-magnesium rare earth multi-element alloy materials

[0044] Step 1: First, add an aluminum ingot with a purity of 99.5% (the weight percentage of Al: 90%) into the graphite clay crucible, heat up the furnace until the aluminum ingot is melted, raise the furnace temperature to 830°C, and crush metal La and Ce Blocks (5.0% by weight of La and 5.0% by weight of Ce) were pressed into molten aluminum in batches. After the metals La and Ce are completely melted, they are fully stirred and cast to form the master alloy ALRe10, and the casting temperature of the alloy is 1250°C.

[0045] Step 2: Put zinc ingots with a purity of 99.995% and aluminum ingots with a purity of 99.5% into a vacuum induction melting furnace for melting, use 0.1-0.5wt% zinc chloride refining agent and 0.05-0.07wt% modificant (chlorine ammonium chloride) for treatment, the main component of the modifier is RE-45, and then 5.0% ALRe10 aluminum-based rare earth master allo...

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Abstract

The invention relates to a composition design, a preparation method and application of a hot spraying zinc-aluminum-magnesium-rare earth multi-element alloy material, and belongs to the technical field of anti-corrosive metal anticorrosion. The zinc-aluminum-magnesium-rare earth multi-element alloy material comprises the following components in percentage by weight: 5.0 to 15.0 percent of aluminum, 0.1 to 1.0 percent of magnesium, 0.1 to 0.5 percent of rare earth (lanthanum and cerium), less than 1.0 percent of impurities and the balance of zinc. The preparation method comprises the following steps of: heating to smelt zinc ingots and aluminum ingots in an alloy smelting furnace, adding an intermediate alloy, stirring until the melt is clear, standing, slagging off, and casting; and performing homogenizing annealing on cast ingots, extruding to obtain zinc-aluminum-magnesium-rare earth multi-element alloy blank thick wires, and performing homogenizing annealing, drawing, diameter reducing, and wire surface cleaning to obtain zinc-aluminum-magnesium-rare earth multi-element alloy wire products. A corrosion resistant multi-element alloy coating prepared from the alloy wires prepared by the method through a hot spraying technology has the corrosion resistance obviously higher than that of a pure zinc coating, is suitable for protection construction of steel structural parts, and has important significance and wide application prospect for anti-corrosion engineering of water conservancy and hydropower, ports, bridges, ships and the like.

Description

[0001] technical field [0002] The invention relates to a wire suitable for thermal spraying zinc-aluminum-magnesium rare earth multi-element alloy protective coating and a preparation method thereof, belonging to the field of metal thermal spraying, corrosion and protection of steel structures. Background technique [0003] At present, the thermal spraying metal wires widely used in the anti-corrosion field mainly include zinc wire, aluminum wire and zinc-aluminum alloy wire. Thermal spraying technology is the most effective and useful process technology for anti-corrosion. Using thermal spraying technology to prepare the above-mentioned metal coating on the surface of steel structure, and sealing the coating can effectively prolong the service life of steel structure parts. [0004] Since the 1950s, the Thermal Spraying Professional Committee of the Japan Corrosion Control Association has used flame spraying technology to spray Zn-13wt%Al alloy wires on the surface of car...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22C1/03C22F1/16C23C4/08B21C37/04
Inventor 肖葵李晓刚高瑾刘安强董超芳
Owner UNIV OF SCI & TECH BEIJING
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