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Rare earth-aluminium-magnesium alloy wire for thermal spraying

A rare earth aluminum and magnesium alloy technology, applied in the field of metal alloy technology and thermal spraying, can solve the problem of few reports on solid wire, and achieve the effects of being conducive to large-scale production and wide application, simple preparation process and prolonging service life.

Active Publication Date: 2013-07-17
JIANGSU CUMT DAZHENG SURFACE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on such related
In addition, further adding titanium and two different kinds of rare earth elements lanthanum and cerium to the alloy for alloying treatment can refine the grain size and improve plasticity and corrosion resistance. No such reports have been seen so far.
At present, in order to obtain spraying materials with multiple components at home and abroad, powder core wire materials are mostly used, but there are not many reports on solid wire materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The rare earth aluminum-magnesium alloy wire is prepared by the mixed melting method, and the specific composition is: La purity ≥ 99.0%: 0.1%, Ce purity ≥ 99.0%: 0.1%, Mg purity ≥ 99.9%: 2%, Ti purity ≥ 99.0%: 0.15 %, the rest is Al purity ≥ 99.9%.

[0022] (1) The weight percentage is: La: 0.1%, Ce: 0.1%, Mg: 2%, Ti: 0.15%, Al: 30% for batching, and then smelting in a hollow induction furnace to prepare an intermediate alloy;

[0023] (2) Put the remaining Al into the smelting furnace for smelting, the smelting temperature is 720°C~760°C, after the pure aluminum is completely melted, refine it, then add the intermediate alloy prepared in (1), stir well until Melting, standing still for 0.5~2h, slag removal, transfer to heat preservation crystallization furnace for horizontal continuous casting;

[0024] (3) The alloy rough wire obtained by horizontal continuous casting is homogenized and annealed at 260°C~320°C for 1.5~3.0h, and then drawn 3~8 times and cut into a ra...

Embodiment 2

[0026] The specific composition of the rare earth aluminum-magnesium alloy wire prepared by the mixed melting method is: by weight percentage: La purity ≥ 99.0%: 0.15%, Ce purity ≥ 99.0%: 0.15%, Mg purity ≥ 99.9%: 2%, Ti purity ≥ 99.0%: 0.15%, the rest is Al purity ≥ 99.9%.

[0027] (1) Mix the ingredients according to weight percentage: La: 0.15%, Ce: 0.15%, Mg: 2%, Ti: 0.15%, Al: 30%, and then melt in a hollow induction furnace to prepare an intermediate alloy;

[0028] (2) Put the remaining Al into the smelting furnace for smelting, the smelting temperature is 720°C~760°C, after the pure aluminum is completely melted, refine it, then add the intermediate alloy prepared in (1), stir well until Melting, standing still for 0.5~2h, slag removal, transfer to heat preservation crystallization furnace for horizontal continuous casting;

[0029] (3) The alloy rough wire obtained by horizontal continuous casting is homogenized and annealed at 260°C~320°C for 1.5~3.0h, and then draw...

Embodiment 3

[0031] The specific composition of the rare earth aluminum-magnesium alloy wire prepared by the mixed melting method is: by weight percentage: La purity ≥ 99.0%: 0.2%, Ce purity ≥ 99.0%: 0.2%, Mg purity ≥ 99.9%: 4%, Ti purity ≥ 99.0%: 0.15%, the rest is Al purity ≥99.9%.

[0032] (1) Mix the ingredients according to weight percentage: La: 0.2%, Ce: 0.2%, Mg: 4%, Ti: 0.15%, Al: 30%, and then smelt in a hollow induction furnace to prepare the master alloy;

[0033] (2) Put the remaining Al into the smelting furnace for smelting, the smelting temperature is 720°C~760°C, after the pure aluminum is completely melted, refine it, then add the intermediate alloy prepared in (1), stir well until Melting, standing still for 0.5~2h, slag removal, transfer to heat preservation crystallization furnace for horizontal continuous casting;

[0034] (3) The alloy rough wire obtained by horizontal continuous casting is homogenized and annealed at 260°C~320°C for 1.5~3.0h, and then drawn 3~8 tim...

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Abstract

The invention discloses a rare earth-aluminium-magnesium alloy wire for thermal spraying, belonging to the technical field of metal alloys. The alloy wire comprises the following components by weight percent: 1%-5% of Mg, 0.1%-0.5% of RE, 0.1%-0.2% of Ti and the balance of Al. The alloy wire disclosed by the invention has the following beneficial effects: the rare earth-aluminium-magnesium alloy wire is easy to prepare and has lower cost, good comprehensive mechanical property and good corrosion resistance; the metal thermal spraying coating prepared from the alloy wire has the advantages of dense coating, low porosity, high bonding strength with the matrix and good corrosion resistance; and particularly, the metal thermal spraying coating has excellent corrosion resistance in the marine corrosion environment and can be widely used in the corrosion protection of the steel structure.

Description

technical field [0001] The invention relates to a metal alloy wire material for thermal spraying in the field of surface engineering corrosion protection, in particular to a rare earth aluminum-magnesium alloy wire material for thermal spraying, and belongs to the fields of metal alloy technology and thermal spraying technology. Background technique [0002] It has been proved in long-term experiments and practice that thermal spraying metal coating can provide effective protection for steel structure corrosion. At present, the wire materials that have been widely used in thermal spraying include zinc wire, aluminum wire, zinc-aluminum alloy wire, aluminum-magnesium alloy wire, and Ac aluminum wire. [0003] In recent years, the research on rare earth aluminum alloy coating has been in-depth, and it is found that the addition of rare earth can change the structure of the oxide film on the surface and increase the thickness of the oxide film; it can improve the structure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/08C22C21/06
Inventor 王会阳安云岐李承宇晁兵
Owner JIANGSU CUMT DAZHENG SURFACE ENG TECH
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