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Phosphor zincium base containing intermediate alloy and method for producing the same

An intermediate alloy, zinc-based technology, applied in the field of metal materials, can solve the problems of reducing the corrosion resistance of magnesium alloys, difficult to control, complex preparation process, etc., and achieve the effects of reducing oxidation burning loss, high density and high phosphorus content

Inactive Publication Date: 2008-06-11
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patents 200610042395.7 and 200610069260.X respectively provide phosphorus-containing silicon-based master alloys, which can refine primary Mg 2 Si, however, its preparation process is relatively complex and difficult to control, and the master alloy contains Cu or Ni elements, which will reduce the corrosion resistance of magnesium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a) Mixing: adopt zinc powder and red phosphorus as raw materials, take by mass percentage, zinc: 90.0, phosphorus: 10.0, mix the prepared zinc powder and red phosphorus evenly;

[0023] b) Compression molding: put the uniformly mixed powder into a mold, press it into a compact at room temperature, and the density of the compact is 78% of the theoretical density of the compact;

[0024] c) Drying: Put the compact into an argon-protected drying furnace, heat to 250° C., keep it warm for 30 minutes, and then cool to room temperature with the furnace to obtain a zinc 90 phosphorus 10 master alloy.

Embodiment 2

[0026] a) Mixing: adopt zinc powder and red phosphorus as raw materials, weigh by mass percentage, zinc: 85.0, phosphorus: 15.0, mix the prepared zinc powder and red phosphorus evenly;

[0027] b) Compression molding: put the uniformly mixed powder into a mold, press it into a compact at room temperature, and the density of the compact is 75% of the theoretical density of the compact;

[0028] c) Drying: Put the compact into an argon-protected drying furnace, heat it to 200°C, keep it warm for 30 minutes, and then cool it down to room temperature with the furnace to prepare a zinc 85 phosphorus 15 master alloy.

Embodiment 3

[0030] a) Mixing: adopt zinc powder and red phosphorus as raw materials, weigh by mass percentage, zinc: 80.0, phosphorus: 20.0, mix the prepared zinc powder and red phosphorus evenly;

[0031] b) Compression molding: put the uniformly mixed powder into a mold, press it into a compact at room temperature, and the density of the compact is 70% of the theoretical density of the compact;

[0032] c) Drying: Put the compact into an argon-protected drying furnace, heat to 150°C, keep it warm for 30 minutes, and then cool to room temperature with the furnace to prepare a zinc 80 phosphorus 20 master alloy.

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Abstract

The invention relates to an intermediate alloy including phosphorus and zinc radical and used for refining the primarily generated Mg2Si in the magnesium-silicon-zinc or the magnesium-zinc-silicon series alloy, and the preparation method thereof. The intermediate alloy comprises chemical components according to the following mass percent: zinc occupies 75.0 to 95.0 percent, and phosphorus occupies 5.0 to 25.0 percent. The preparation method comprises the following preparation steps: firstly, zinc powder and red phosphorus are adopted as raw material, uniformly mixed according to a certain proportion, and pressed into semi finished metal; secondly, the pressed semi finished metal is arranged in an argon shielding heating furnace to heat to 100 to 260 DEG C, the heat preservation is performed for 30 minutes, and then the pressed semi finished metal is cooled to room temperature along with the cooling of the furnace. The chemical reaction is not generated during the preparation process of the intermediate alloy, the process is simple, the degeneration effect is good, and the invention has no pollution during the operating process, and is easy for the generalization and the application.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a method for refining primary Mg in magnesium-silicon-zinc or magnesium-zinc-silicon alloys 2 Si phosphorus-containing zinc-based master alloy and its preparation method. Background technique [0002] Intermetallic compound Mg 2 Si is a high-temperature stable phase, which can significantly improve the high-temperature creep resistance of magnesium alloys. Therefore, in recent years, the research on silicon-containing magnesium alloys, especially high-silicon magnesium alloys, has received more and more attention. However, the primary Mg in the ingot obtained by the traditional gravity casting method 2 Si is a coarse dendrite with great brittleness, so it cannot be used directly, and must be modified and refined. Phosphorus vs. Mg 2 Si has obvious modification and refinement effect, but due to the low ignition point of phosphorus, when it is directly added to the superalloy me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/00C22C1/05
Inventor 王慧远姜启川姜丽丽查敏顾振华李栋刘畅
Owner JILIN UNIV
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