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A magnesium-based bulk amorphous alloy with obvious plasticity and its preparation method

An amorphous alloy and plastic technology, applied in the field of magnesium-based bulk amorphous alloy and its preparation, can solve the problems of limited preparation size, easy brittle fracture, uneven melting, etc., and achieve good biocompatibility and osseointegration performance, increase corrosion potential, and broaden the application range

Active Publication Date: 2017-08-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims at the disadvantages of easy oxidation, uneven and insufficient smelting, limited preparation size, obviously insufficient plasticity and easy brittle fracture in current magnesium-based amorphous alloys, thereby providing a magnesium-based bulk amorphous alloy with obvious plasticity. Crystal alloy and its preparation method

Method used

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  • A magnesium-based bulk amorphous alloy with obvious plasticity and its preparation method
  • A magnesium-based bulk amorphous alloy with obvious plasticity and its preparation method
  • A magnesium-based bulk amorphous alloy with obvious plasticity and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the atomic percentage of each element in the target alloy: Mg is 71.6%, Zn is 20%, Ca is 5%, Zr is 3.4%, weighing 99.99% pure magnesium, 99.99% pure zinc, 99.99% pure calcium, 99.99% pure zirconium is mixed to obtain the master alloy raw material; then the master alloy raw material is placed in a vacuum induction melting furnace, and when the mechanical pump is used to draw a low vacuum to 5Pa, the molecular pump is used to draw a high vacuum to 9×10 -4 Pa, and then under the protection of argon, the master alloy was repeatedly smelted 3 times (the master alloy needs to be stirred each time), and the electromagnetic stirring was turned on during the smelting process to ensure the uniformity of the alloy structure. Mg can be obtained by cooling in the furnace 71.6 Zn 20 Ca 5 Zr 3.4 alloy ingot.

[0034] High vacuum to 8×10 -4 Pa, the Mg-Zn-Ca-Zr alloy ingot obtained in the first step is melted using a resistance furnace, and when the furnace temperature...

Embodiment 2

[0039] According to the atomic percentage of each element in the target alloy: Mg is 71.4%, Zn is 20%, Ca is 5%, Zr is 3.6%, weighing 99.99% pure magnesium, 99.99% pure zinc, 99.99% pure calcium, 99.99% pure zirconium is mixed to obtain the master alloy raw material; then the master alloy raw material is placed in a vacuum induction melting furnace, and when the mechanical pump is used to draw a low vacuum to 5Pa, the molecular pump is used to draw a high vacuum to 7.5×10 -4 Pa, and then under the protection of argon, the master alloy was repeatedly smelted 5 times (the master alloy needs to be stirred each time), and the electromagnetic stirring was turned on during the smelting process to ensure the uniformity of the alloy structure. Mg can be obtained by cooling in the furnace 71.4 Zn 20 Ca 5 Zr 3.6 alloy ingot.

[0040] First pump high vacuum to 7.5×10 -4 When Pa, the Mg-Zn-Ca-Zr alloy ingot obtained in the first step is melted in a resistance furnace, and the refinin...

Embodiment 3

[0045] According to the atomic percentage of each element in the target alloy: Mg is 71%, Zn is 20%, Ca is 5%, Zr is 4%, weighing 99.99% pure magnesium, 99.99% pure zinc, 99.99% pure calcium, 99.99% pure zirconium is mixed to obtain the master alloy raw material; then the master alloy raw material is placed in a vacuum induction melting furnace, and when the mechanical pump is used to draw a low vacuum to 5Pa, the molecular pump is used to draw a high vacuum to 7×10 -4 Pa, and then under the protection of argon, the master alloy was repeatedly smelted 4 times (the master alloy needs to be stirred each time), and the electromagnetic stirring was turned on during the smelting process to ensure the uniformity of the alloy structure. Mg can be obtained by cooling in the furnace 71 Zn 20 Ca 5 Zr 4 alloy ingot.

[0046] First pump high vacuum to 7×10 -4 When Pa, the Mg-Zn-Ca-Zr alloy ingot obtained in the first step is melted in a resistance furnace, and the refining agent whos...

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Abstract

The invention provides a magnesium-based bulk amorphous alloy having distinct plasticity and a preparation method thereof. The structural formula of the alloy is Mg75-xZn20Ca5Zrx, wherein x is the atom percentage of the element Zr in the alloy and is equal to 3.4-4.2. By adding high-content Zr, a mother alloy is made in a vacuum smelting furnace; then a refining agent is used for refining, and a Mg-Zn-Ca-Zr amorphous alloy check bar is prepared through a copper mold blowing injection method; and finally, the magnesium-based bulk amorphous alloy free of harmful elements, high in strength and having the distinct plasticity is prepared. According to the magnesium-based bulk amorphous alloy having the distinct plasticity and the preparation method of the magnesium-based bulk amorphous alloy having the distinct plasticity, the plasticity of the magnesium-based amorphous alloy is remarkably improved by regulating the alloy components and improving the preparing process, and quite important clinical application significance is achieved.

Description

Technical field: [0001] The invention belongs to the technical field of alloy materials, and relates to a magnesium-based bulk amorphous alloy without toxic elements and having obvious plasticity and a preparation method thereof. Background technique: [0002] In recent years, biometal materials represented by degradable magnesium alloys have attracted more and more attention. Magnesium alloy has the advantages of low price, high specific strength and specific stiffness, and good biocompatibility. In addition, the degradability of magnesium alloy is unmatched by other biological materials. The medical clinical application of bio-magnesium alloys can greatly improve the functions of existing bio-metal devices, and may bring unexpected new medical effects, bringing good news to patients who have been plagued by diseases for a long time. [0003] However, it cannot be ignored that magnesium alloys have disadvantages such as poor corrosion resistance and low mechanical properti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C1/06C22C45/00
CPCC22C1/03C22C1/06C22C45/005
Inventor 秦春玲祝江赛王志峰张振岐赵维民
Owner HEBEI UNIV OF TECH
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