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High-crush-resisting rapid degradation magnesium alloy and preparation method thereof

A rapid degradation, magnesium alloy technology, applied in metal materials and application fields, can solve the problems of temporary plugging tools, such as difficult drilling, high labor and material costs, and difficulty in cleaning, so as to save drilling and recycling processes, improve construction efficiency, Increase the effect of ignition point

Inactive Publication Date: 2020-05-08
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the defects of current temporary blocking tools, such as difficult drilling, difficult cleaning, long time consumption, high cost of manpower and material resources after the event, and provides a preparation process for high-pressure-resistant and fast-degradable magnesium alloys

Method used

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  • High-crush-resisting rapid degradation magnesium alloy and preparation method thereof

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Effect test

Embodiment 1

[0022] Example 1 A high compressive and rapidly degradable magnesium alloy

[0023] The high compressive and rapidly degradable magnesium alloy is a Mg-Zn-Cu-Ni-Nd-Ca magnesium alloy, which consists of the following elements by mass percentage: Zn 5.00wt%, Cu 1.20wt%, Ni 1.50wt%, Nd 1.50wt% %, Ca 0.5wt%, and the rest are Mg and unavoidable impurity elements. The raw materials are weighed according to the ratio, and the above-mentioned raw materials are pure magnesium ingots, pure zinc ingots, pure copper ingots, pure nickel ingots, Mg-Nd master alloys, and Mg-Ca master alloys. Before smelting, heat the raw material and mold for 30 minutes to remove moisture and preheat; preheat the crucible to 400°C, spray the solvent evenly on the inner wall of the crucible; put the preheated metal ingot into the crucible and raise the temperature to 720°C, and stir Raise the temperature to 750°C and let stand, heat for 30 minutes and then cool down to 700°C for pouring. The casting mold is ...

Embodiment 2

[0024] Example 2 A High Compressive Rapidly Degradable Magnesium Alloy

[0025] The high compressive and rapidly degradable magnesium alloy is a Mg-Zn-Cu-Ni-Nd-Ca magnesium alloy, which consists of the following elements by mass percentage: Zn 7.00wt%, Cu 2.40wt%, Ni 1.90wt%, Nd 2.70wt% %, Ca 0.8wt%, and the rest are Mg and unavoidable impurity elements. Raw materials are weighed according to the ratio, and the above-mentioned raw materials are used to weigh pure magnesium ingots, pure zinc ingots, pure copper ingots, pure nickel ingots, Mg-Nd master alloys, and Mg-Ca master alloys. Before smelting, heat the raw material and mold for 30 minutes to remove moisture and preheat; preheat the crucible to 400°C, spray the solvent evenly on the inner wall of the crucible; put the preheated metal ingot into the crucible and raise the temperature to 720°C, and stir Raise the temperature to 750°C and let stand, heat for 30 minutes and then cool down to 700°C for pouring. The casting mo...

Embodiment 3

[0026] Example 3 A high compressive and rapidly degradable magnesium alloy

[0027] The high compressive and rapidly degradable magnesium alloy is a Mg-Zn-Cu-Ni-Nd-Ca magnesium alloy, which consists of the following elements by mass percentage: Zn 8.00wt%, Cu 3.60wt%, Ni 2.30wt%, Nd 4.10wt% %, Ca 1.0wt%, and the rest are Mg and unavoidable impurity elements. The raw materials are weighed according to the ratio, and the above-mentioned raw materials are pure magnesium ingots, pure zinc ingots, pure copper ingots, pure nickel ingots, Mg-Nd master alloys, and Mg-Ca master alloys. Before smelting, heat the raw material and mold for 30 minutes to remove moisture and preheat; preheat the crucible to 400°C, spray the solvent evenly on the inner wall of the crucible; put the preheated metal ingot into the crucible and raise the temperature to 720°C, and stir Raise the temperature to 750°C and let stand, heat for 30 minutes and then cool down to 700°C for pouring. The casting mold is ...

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Abstract

The invention discloses a high-crush-resisting rapid degradation magnesium alloy and a preparation method thereof. The alloy is prepared from, by mass percent, 5.0-10wt% of Zn, 1.20-6.0wt% of Cu, 1.50-3.0wt% of Ni, 1.50-5.0wt% of Nd, 0.5-1.5wt% of Ca and the balance Mg and the other impurity elements. According to the high-crush-resisting rapid degradation magnesium alloy and the preparation method thereof, Cu, Nd, Ca and other alloy elements are added to improve the crush resistance of a material, and the degradation rate is increased through Cu and Ni. According to the prepared high-crush-resisting rapid degradation magnesium alloy, the corrosion rate in a 3% KC1 solution at the temperature of 25 DEG C can reach 7.4 mg cm<-2>h<-1>, and the corrosion rate in the 3% KC1 solution at the temperature of 93 DEG C can reach 88 mg cm<-2>h<-1>; and high crush resisting strength is achieved, and the high-crush-resisting rapid degradation magnesium alloy and the preparation method thereof are suitable for the field of shale gas extraction with a rapid corrosion requirement.

Description

technical field [0001] The invention belongs to the field of metal materials and applications, in particular to a high-pressure-resistant and rapidly degradable magnesium alloy, a preparation method and application thereof. Background technique [0002] In recent years, my country's oil and gas resources have become increasingly tense, and fuel prices have also been increasing. Oilfield exploitation has shifted from high-permeability oilfields to low-permeability unconventional oilfields, making oil and gas resources fully exploited and utilized efficiently. With the increase of oilfield development years and times, it is difficult for the development of original oilfields to meet the demand of high and stable production. In the process of water injection development of oil and gas production, the injected water will seep out along the direction of old fractures, which requires downhole temporary plugging tools to seal old fractures and open new fractures to improve downhole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03C22F1/06
CPCC22C1/03C22C23/04C22F1/002C22F1/06
Inventor 刘宝胜董舸航任晓霞张跃忠卫英慧
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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