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Degradable Zn-Li-X series alloy wire and preparation method thereof

An alloy wire and wire technology, which is applied in the field of degradable Zn-Li-X alloy wire and its preparation, can solve the problems of low performance of as-cast zinc alloy and poor comprehensive mechanical properties of pure zinc, and achieve high tensile strength. Strength, excellent plasticity, and the effect of meeting the requirements of large-scale industrial production

Pending Publication Date: 2021-10-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the comprehensive mechanical properties of pure zinc are poor. At present, alloying methods are mainly used to improve its mechanical properties, and at the same time, its degradation rate can be accelerated. Adding elements include Cu, Li, Mg, Ag, etc.
However, the properties of as-cast zinc alloys are still low, and plastic deformation processing is required to significantly improve their mechanical properties

Method used

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  • Degradable Zn-Li-X series alloy wire and preparation method thereof
  • Degradable Zn-Li-X series alloy wire and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A degradable Zn-1Li-1Mn alloy wire, Li is 1wt.%, Mn is 1wt.%, and the rest is Zn.

[0025] A preparation method of degradable Zn-1Li-1Mn alloy wire, the specific preparation steps are as follows:

[0026] (1) Take Zn, Li, Mn raw materials according to alloy specific gravity, and carry out atmosphere protection smelting, obtain zinc alloy ingot after casting, cooling;

[0027] (2) hot-extruding the zinc alloy ingot, preheating the ingot and the mold to 200° C., keeping it warm for 20 minutes, the extrusion speed is 3 mm / s, and the extrusion ratio is 20 to obtain a zinc alloy bar;

[0028] (3) The zinc alloy rod is subjected to room temperature cold drawing processing, the drawing speed is 5mm / s, the single-pass deformation is 20%, and the drawing is performed 10 times to obtain the zinc alloy wire;

[0029] (4) Carrying out heat treatment to the zinc alloy wire, the heat treatment temperature is 120° C., the time is 30 minutes, and air-cooled to room temperature;

[00...

Embodiment 2

[0033] A degradable Zn-0.1Li-0.1Mg alloy wire, Li is 0.1wt.%, Mg is 0.1wt.%, and the rest is Zn.

[0034] A preparation method of degradable Zn-0.1Li-0.1Mg alloy wire, the specific preparation steps are as follows:

[0035] (1) Weighing Zn, Li, Mg raw materials according to the specific gravity of the alloy, and carrying out atmosphere protection smelting, casting and cooling to obtain zinc alloy ingots;

[0036] (2) hot-extruding the zinc alloy ingot, preheating the ingot and the mold to 300°C, keeping the temperature for 20 minutes, the extrusion speed is 3mm / s, and the extrusion ratio is 20 to obtain the zinc alloy bar;

[0037] (3) The zinc alloy rod is subjected to room temperature cold drawing processing, the drawing speed is 5mm / s, the single-pass deformation is 1%, and the drawing is 3 passes to obtain the zinc alloy wire;

[0038] (4) Carrying out heat treatment to the zinc alloy wire, the heat treatment temperature is 300° C., the time is 30 minutes, and air-cooled ...

Embodiment 3

[0042] A degradable Zn-0.5Li-5Cu alloy wire, Li is 0.5wt.%, Cu is 5wt.%, and the rest is Zn.

[0043] A preparation method of degradable Zn-0.5Li-5Cu alloy wire, the specific preparation steps are as follows:

[0044] (1) Take Zn, Li, Cu raw material according to alloy specific gravity, and carry out atmosphere protection smelting, obtain zinc alloy ingot after casting, cooling;

[0045] (2) hot-extruding the zinc alloy ingot, preheating the ingot and the mold to 230° C., keeping the temperature for 20 minutes, the extrusion speed is 3 mm / s, and the extrusion ratio is 20 to obtain the zinc alloy bar;

[0046] (3) The zinc alloy bar is subjected to room temperature cold drawing processing, the drawing speed is 5mm / s, the single-pass deformation is 30%, and the drawing is performed 10 times to obtain the zinc alloy wire;

[0047] (4) Carrying out heat treatment to the zinc alloy wire, the heat treatment temperature is 200° C., the time is 30 minutes, and air-cooled to room temp...

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Abstract

The invention discloses a degradable Zn-Li-X series alloy wire and a preparation method thereof. The degradable Zn-Li-X series alloy wire comprises the following components including, by mass, larger than 0 and smaller than or equal to 1 wt.% of Li, larger than 0 and smaller than or equal to 5 wt.% of X and the balance Zn, wherein X is at least one element of Mn, Cu, Mg and Ca. The degradable Zn-Li-X series alloy wire is prepared through the procedures of smelting, casting, hot extrusion, cold drawing, heat treatment and the like. The obtained zinc alloy wire has excellent plasticity and high tensile strength, and can be automatically degraded and metabolized after being implanted into a human body.

Description

technical field [0001] The invention relates to a preparation method of an alloy material, in particular to a degradable Zn-Li-X alloy wire and a preparation method thereof. Background technique [0002] With the advancement of technology, a number of medical devices made of degradable magnesium alloy materials have been approved for marketing. And limited by the strength and corrosion resistance of magnesium alloys, inert metal materials such as stainless steel, titanium alloys, and shape memory alloys are still the main clinical implanted medical devices. Therefore, in order to further expand the application of degradable metal materials in the field of medical devices, while continuing to develop magnesium alloy materials, the research on zinc and its alloy materials has gradually become a hot spot. [0003] Zinc is one of the essential trace elements for the human body. It participates in the physiological metabolic process of the human body and plays an important role ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C18/00C22C18/02C22F1/16
CPCC22C18/02C22C18/00C22C1/02C22F1/165
Inventor 白晶程兆俊王子昕李尚军范启洲薛烽
Owner SOUTHEAST UNIV
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