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High-strength and rapid-corrosion magnesium alloy and preparation method thereof

A rapid corrosion, magnesium alloy technology, used in earthwork drilling, fluid mining, construction, etc., can solve the problems of time-consuming and laborious, complex process, increased cost, etc., to improve strength and corrosion rate, mechanical properties and corrosion rate. Effect

Inactive Publication Date: 2019-07-16
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a high-strength fast-corroding magnesium alloy and a preparation method thereof in order to solve the problem that the existing process of eliminating fracturing balls is complex and time-consuming and laborious and increases costs

Method used

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  • High-strength and rapid-corrosion magnesium alloy and preparation method thereof
  • High-strength and rapid-corrosion magnesium alloy and preparation method thereof
  • High-strength and rapid-corrosion magnesium alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A high-strength rapid-corrosion magnesium alloy, the chemical composition of the magnesium alloy is (mass percentage): 6% Al, 1% Ge, and the balance is magnesium.

[0028] The preparation method of the high-strength rapid corrosion magnesium alloy preparation method comprises the following steps:

[0029] (1) Pretreat the magnesium ingots and aluminum ingots respectively: cut the magnesium ingots and aluminum ingots into small pieces of 100mm×30mm×20mm respectively, and remove the oxides and oil stains on the surface according to the conventional method, and then wash them with absolute alcohol After cleaning, dry at a temperature of 90°C to constant weight to obtain pretreated magnesium ingots and aluminum ingots;

[0030] (2) Pretreatment of germanium grains: remove oxides and oil stains on the surface of germanium grains according to conventional methods, then clean them with anhydrous alcohol, and dry them at a temperature of 90°C to constant weight to obtain the pr...

Embodiment 2

[0037] A high-strength rapid-corrosion magnesium alloy, the alloy product is composed of the following components in weight percentage (g / g): 6% Al, 3% Ge, and the balance is magnesium.

[0038] The preparation steps are as in Example 1.

[0039] The compressive strength of the prepared magnesium alloy is 431Mpa, and the corrosion rate is 582mm / a.

Embodiment 3

[0041] A high-strength rapid-corrosion magnesium alloy, the alloy product is composed of the following components in weight percentage (g / g): 6% Al, 5% Ge, and the balance is magnesium.

[0042] The preparation steps are as in Example 1.

[0043] The compressive strength of the prepared magnesium alloy is 422Mpa, and the corrosion rate is 566mm / a.

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Abstract

The invention relates to the technical field of metal alloy materials, and particularly relates to a high-strength and rapid-corrosion magnesium alloy, and a preparation method thereof. The alloy is composed of the following components in percentage by weight: 2%-8% of Al, 0.5%-7% of Ge and the balance magnesium. According to the high-strength and rapid-corrosion magnesium alloy, and the preparation method thereof, the strength and the corrosion speed of the magnesium alloy are increased by adequately utilizing the action of the elements Al and Ge, and the mechanical property of the magnesiumalloy is remarkably improved, and the corrosion speed of the magnesium alloy is remarkably increased through few alloy element adding types and low adding amounts. The compressive strength of the magnesium alloy is capable of reaching 416-431MPa; the corrosion speed in 3% potassium chloride solution at 90 DEG C is capable of reaching 537-582 mm / a; the performance requirement of a fractured ball can be met; and the magnesium alloy can be used as a structural member, and can also be rapidly dissolved under a specific condition.

Description

technical field [0001] The invention relates to the technical field of metal alloy materials, in particular to a high-strength fast-corrosion magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy is the lightest material among structural metals (density is 1.74g / cm 3 ), has the characteristics of low density and high specific strength, so it is widely used in the automotive and aerospace industries, but the high corrosion rate also limits its application. However, there are some applications where a material with a high corrosion rate is more desirable. For example, degradable frac balls used in shale gas development. In the actual engineering process, fracturing balls or fracturing ball seats, as one of the key tools of multi-stage fracturing technology, must have sufficient strength to withstand high pressure. Usually, the materials used for fracturing balls are polyetheretherketone (PEEK ), TORLON, mild steel and aluminum alloy...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C1/02E21B34/14E21B43/26
CPCC22C1/02C22C23/00C22C23/02E21B34/14E21B43/26E21B2200/04
Inventor 刘笑达侯利锋卫英慧阴明杜华云刘宝胜
Owner TAIYUAN UNIV OF TECH
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