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High-plasticity biodegradable Zn-2Li alloy under GPa-level high-pressure effect and preparation method thereof

A technology of zn-2li and high plasticity, applied in the field of high plasticity biodegradable Zn-2Li alloy and its preparation

Active Publication Date: 2020-03-13
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, so far, there has been no report on the preparation method of a high-plasticity biodegradable Zn-2Li alloy under GPa level high pressure, so it is proposed to use the Zn-2Li alloy after high pressure as the next step. Stages of application of degradable biomedical materials

Method used

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  • High-plasticity biodegradable Zn-2Li alloy under GPa-level high-pressure effect and preparation method thereof
  • High-plasticity biodegradable Zn-2Li alloy under GPa-level high-pressure effect and preparation method thereof
  • High-plasticity biodegradable Zn-2Li alloy under GPa-level high-pressure effect and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 2

[0037] Example 2, the Zn-2 (wt.%) Li ingot was kept at 350° C. for 10 h for homogenization annealing and then water-cooled, and a cylindrical sample with a diameter of 10 mm and a length of 15 mm was prepared by wire cutting. The CS-1B high-pressure six-sided top press produced by Zhengzhou Abrasive Grinding Research Institute Co., Ltd. was used for high-pressure experiments. The pressure is set at 5GPa, and the heating temperature is set at 700°C according to the Clausius-Clapeyren equation and the melting point of the Zn-2Li alloy. Put the cylindrical sample into boron nitride, graphite sleeve and pyrophyllite in turn to form an assembly sleeve, then put the assembly sleeve into the cavity of the high-pressure six-sided roof, and start the high-pressure solidification and heat treatment experiment after the hammer head is aligned. First increase the pressure to the preset pressure, and at the same time start the temperature measuring device and turn on the water cooling devi...

Embodiment 3

[0038] Example 3, the Zn-2 (wt.%) Li ingot was kept at 350° C. for 10 h for homogenization annealing and then water-cooled, and a cylindrical sample with a diameter of 10 mm and a length of 15 mm was prepared by wire cutting. The CS-1B high-pressure six-sided top press produced by Zhengzhou Abrasive Grinding Research Institute Co., Ltd. was used for high-pressure experiments. The pressure is set at 5GPa, and the heating temperature is set at 700°C according to the Clausius-Clapeyren equation and the melting point of the Zn-2Li alloy. Put the cylindrical sample into boron nitride, graphite sleeve and pyrophyllite in turn to form an assembly sleeve, then put the assembly sleeve into the cavity of the high-pressure six-sided roof, and start the high-pressure solidification and heat treatment experiment after the hammer head is aligned. First increase the pressure to the preset pressure, and at the same time start the temperature measuring device and turn on the water cooling devi...

Embodiment 4

[0039]Example 4, the Zn-2 (wt.%) Li ingot was kept at 350° C. for 12 hours for homogenization annealing and then water-cooled, and a cylindrical sample with a diameter of 10 mm and a length of 15 mm was prepared by wire cutting. The CS-1B high-pressure six-sided top press produced by Zhengzhou Abrasive Grinding Research Institute Co., Ltd. was used for high-pressure experiments. The pressure is set at 1GPa, and the heating temperature is set at 500°C according to the Clausius-Clapeyren equation and in combination with the melting point of the Zn-2Li alloy. Put the cylindrical sample into boron nitride, graphite sleeve and pyrophyllite in turn to form an assembly sleeve, then put the assembly sleeve into the cavity of the high-pressure six-sided roof, and start the high-pressure solidification and heat treatment experiment after the hammer head is aligned. First increase the pressure to the preset pressure, and at the same time start the temperature measuring device and turn on...

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Abstract

The invention relates to a high-plasticity biodegradable Zn-2Li alloy under a GPa-level high-pressure effect and a preparation method thereof. The high-plasticity biodegradable Zn-2Li alloy comprisesthe following components of, by mass, 2% of Li and the balance Zn. The pressure value of the Zn-2Li alloy is the 1 GPa-5 GPa level. The compressive yield strength of the Zn-2Li alloy is 420-550 Mpa, the compressive ultimate strength is 600-800 Mpa, and ductility is 18%-24%. According to the provided preparation method of the high-plasticity biodegradable Zn-2Li alloy under the GPa-level high-pressure effect, more excellent blood compatibility, more excellent mechanical reliability and more excellent abrasion resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of biodegradable medical zinc alloys, in particular to a high plasticity biodegradable Zn-2Li alloy under the action of GPa level high pressure and a preparation method thereof. Background technique [0002] For magnesium alloys and iron-based alloys, most magnesium alloys have the disadvantages of too fast degradation and iron-based alloys have the disadvantage of too slow degradation. The corrosion rate of zinc and its alloys is between the two, and it is considered to be more likely to be used as a metallic biodegradable material for human implants. At the same time, Zn is a metal trace element that is necessary in the human body and its content is second only to Fe. Due to the hexagonal close-packed lattice type of pure zinc, the strength and elongation are very low in the as-cast state, and it is difficult to meet the performance requirements of implant materials. At present, zinc alloy biodegradable ...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22F1/16
CPCC22C18/00C22F1/165
Inventor 林继兴徐临超童先陈健军张德闯蔡文昊高尧王坤
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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