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Zn-Al-Sr alloy and preparation method thereof

A zn-al-sr alloy technology, applied in metal material coating process, coating, hot-dip plating process, etc., can solve problems such as difficulties in the production process of metal strontium, improve microstructure and mechanical properties, and improve efficiency effect

Inactive Publication Date: 2016-06-29
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The chemical activity of metal strontium is very active. It quickly reacts with oxygen in the air at room temperature to form strontium oxide, and then reacts with water to form strontium hydroxide. Therefore, the production process of metal strontium is very difficult.

Method used

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  • Zn-Al-Sr alloy and preparation method thereof
  • Zn-Al-Sr alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Analytical pure SrCl 2 ·6H 2 The O salt is placed in a beaker, dried and dehydrated in a drying oven, and ground into powder.

[0027] (2) Weigh the Zn block and SrCl in proportion 2 Powder, of which 114g of Zn block, 6g of Al block, SrCl 2 Powder 6g, after many experiments, it was found that after stirring the Zn-Al liquid, SrCl 2 will float on the surface of Zn liquid, at this time, SrCl 2 The absorption is limited, so SrCl 2 Excessive levels can still be reached.

[0028] (3) Preheat the graphite crucible to dark red, and weigh the SrCl in proportion 2 The powder is placed at the bottom of the crucible and added in SrCl 2 A Zn block and an Al block are placed on the powder, and then the temperature is raised to 700°C-730°C.

[0029] (4) After the Zn block and the Al block are completely melted, stir the Zn-Al liquid and sprinkle SrCl evenly on the surface of the Zn-Al liquid 2 powder to cover.

[0030] (5) The Zn-Al liquid was heated for 1 hour and then...

Embodiment 2

[0035](1) Analytical pure SrCl 2 ·6H 2 O salt was put into a beaker, dried and dehydrated in a drying oven, and ground into powder.

[0036] (2) Weigh the Zn block and SrCl in proportion 2 Powder, of which Zn block 108g, Al block 12g, SrCl 2 Powder 6g, found through many experiments, after stirring the Zn-Al liquid, SrCl 2 Will float on the surface of Zn liquid, at this time for SrCl 2 The absorption is limited, so SrCl 2 Overdose can still be achieved.

[0037] (3) Preheat the graphite crucible to dark red, add the proportionally weighed SrCl 2 The powder was placed at the bottom of the crucible, and in SrCl 2 Put Zn blocks and Al blocks on the powder, and then raise the temperature to 700°C-730°C.

[0038] (4) After the Zn block and Al block are completely melted, stir the Zn-Al liquid and evenly sprinkle SrCl on the surface of the Zn-Al liquid 2 Powder for coverage.

[0039] (5) After heating the Zn-Al liquid for 1 hour, stir again.

[0040] (6) There will be whi...

Embodiment 3

[0044] (1) Analytical pure SrCl 2 ·6H 2 O salt was put into a beaker, dried and dehydrated in a drying oven, and ground into powder.

[0045] (2) Weigh the Zn block and SrCl in proportion 2 Powder, of which Zn block 96g, Al block 24g, SrCl 2 Powder 6g, found through many experiments, after stirring the Zn-Al liquid, SrCl 2 Will float on the surface of Zn liquid, at this time for SrCl 2 The absorption is limited, so SrCl 2 Overdose can still be achieved.

[0046] (3) Preheat the graphite crucible to dark red, add the proportionally weighed SrCl 2 The powder was placed at the bottom of the crucible, and in SrCl 2 Put Zn blocks and Al blocks on the powder, and then raise the temperature to 700°C-730°C.

[0047] (4) After the Zn block and Al block are completely melted, stir the Zn-Al liquid and evenly sprinkle SrCl on the surface of the Zn-Al liquid 2 Powder for coverage.

[0048] (5) After heating the Zn-Al liquid for 1 hour, stir again.

[0049] (6) There will be whi...

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Abstract

The invention relates to Zn-Al alloy materials and a preparation method thereof, in particular to Zn-Al-Sr alloy and a preparation method thereof, and the Zn-Al-Sr alloy serves as a modificator and a grain refiner. The Zn-Al-Sr alloy is prepared through the method that molten zinc and aluminum and SrCl2 are mechanically mixed and react. ZnCl2 and AlCl3 are formed by the Cl element with the Zn element and the Al element. During smelting, the ZnCl2 and the AlCl3 are evaporated in a gaseous state, and the Sr element is molten into the molten zinc and aluminum, so that the Zn-Al-Sr alloy is obtained. The Zn-Al-Sr alloy is prepared through the method that the molten zinc and aluminum and the SrCl2 are mechanically mixed and react, and the matrix structure of the alloy is composed of an eta-Zn phase, an alpha-Al phase and a ZnSr13 phase containing Al. The Zn-Al-Sr alloy can be used for improving the microstructure and mechanical performance of a hot-dipping galvanizing aluminum alloy clad layer. The Zn-Al-Sr alloy is low in melting point, not sticky to a pot, capable of being fast molten into a molten pool after being stirred, and capable of improving efficiency when applied to the hot-dipping galvanizing industry.

Description

technical field [0001] The invention relates to a zinc-aluminum alloy material and a preparation method thereof, in particular to a zinc-aluminum-strontium alloy used as a modifier and a grain refiner and a preparation method thereof. Background technique [0002] In metals, non-metals, rubber, coatings and other materials, adding an appropriate amount of strontium and its compounds can improve certain properties or make them have special properties. When strontium metal is used alone, it is mainly used as a reducing agent in some industrial processes. When used in alloys, due to the active chemical properties of strontium, in order to reduce oxidation losses, it is generally added in the form of strontium-containing master alloys such as Al-Sr, Mg-Sr, etc. The addition of strontium can effectively modify and refine the structure of the alloy, reduce the occurrence of casting defects, and improve the heat resistance, mechanical and corrosion resistance of the alloy. Stront...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C1/02C23C2/06
CPCC22C18/04C22C1/02C23C2/06
Inventor 王建华陆龙飞吴长军刘亚苏旭平彭浩平
Owner CHANGZHOU UNIV
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