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A kind of high-strength and toughness corrosion-resistant magnesium alloy and preparation method thereof

A magnesium alloy and corrosion-resistant technology, which is applied in the field of high-strength, toughness and corrosion-resistant magnesium alloys and its preparation, can solve the problems of difficult plastic processing, low corrosion rate, poor deformation ability of magnesium alloys, etc., and achieves good corrosion resistance, uniform corrosion, The effect of good corrosion resistance

Active Publication Date: 2020-09-08
ZHUHAI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiments of the present invention solve the problem by providing a high-strength, toughness and corrosion-resistant magnesium alloy, which contains 1.0-8.0% of Zn, 0.1-5.0% of Nd, 0.1-5.0% of Ca, 0.1-4.0% of Zr and the balance of Mg. In the prior art, the deformation ability of magnesium alloy at room temperature is poor, and it is difficult to plastically process when it is used to prepare the stent. While achieving the ideal support effect of the alloy, it can also be degraded uniformly in the body and has better corrosion resistance. , and the corrosion is relatively uniform, and the corrosion rate is as low as 0.18mm / year

Method used

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  • A kind of high-strength and toughness corrosion-resistant magnesium alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0076] This example provides a high-strength and toughness corrosion-resistant magnesium alloy, which includes the following components in mass percentage:

[0077] Zn 1.0%, Nd 0.1%, Ca 0.1%, Zr 0.1%, the balance is Mg, the total amount of impurity elements in this alloy is <0.05%.

Embodiment 2

[0079] This example provides a high-strength and toughness corrosion-resistant magnesium alloy, which includes the following components in mass percentage:

[0080] Zn 8.0%, Nd 5.0%, Ca 5.0%, Zr 4.0%, the balance is Mg, the total amount of impurity elements in this alloy is <0.05%.

Embodiment 3

[0082] This example provides a high-strength and toughness corrosion-resistant magnesium alloy, which includes the following components in mass percentage:

[0083] Zn 4.0%, Nd 2.5%, Ca 2.5%, Zr 2.0%, the balance is Mg, the total amount of impurity elements in this alloy is <0.05%.

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Abstract

The embodiment of the invention provides high-strength-and-toughness and corrosion-resistance magnesium alloy and a preparation method thereof. The alloy solves the problems in the prior art that thedeformation capability of the magnesium alloy is poorer and the plasticity processing is difficult when the magnesium alloy is used for preparing stents, the stents can be uniformly degraded in the body while the ideal supporting effect of alloy is achieved, better corrosion resistant performance is achieved, the corrosion-resistance rate is significantly reduced, and the corrosion is more uniform.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a high-strength and toughness corrosion-resistant magnesium alloy and a preparation method thereof. Background technique [0002] According to the survey report of the World Health Organization, nearly 18 million people die of cardiovascular diseases every year, and this number is expected to increase to 24 million by 2030. It can be seen that cardiovascular disease has become the leading cause of death in the world, and vascular stent implantation is the most effective clinical treatment for cardiovascular disease. [0003] The vascular stents currently used clinically are mainly made of inert metal materials such as 316L stainless steel, nickel-titanium alloy, and cobalt-chromium alloy. The elastic recoil reduces the restenosis rate of blood vessels. However, these inert metal stents act as foreign bodies after implantation, which can lead to excessiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C23/04C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22C23/04C22F1/06
Inventor 马国睿吴锋
Owner ZHUHAI INST OF ADVANCED TECH
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