Zn-Cu series zinc alloy as well as preparation method and applications thereof

A zinc alloy, zn-cu technology, applied in the direction of prosthesis, surgery, coating, etc., can solve the problem that the degradation rate of pure iron is difficult to meet the clinical medical requirements, the degradation rate of pure iron is low, the degradation rate of pure magnesium is loss of mechanical strength, etc. problems, to achieve the effect of excellent blood compatibility, excellent mechanical properties, and good biocompatibility

Active Publication Date: 2017-12-12
湖南华翔医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, biodegradable metals have attracted a lot of attention, among which iron-based and magnesium-based alloys have been widely studied due to their excellent mechanical properties and biocompatibility, but the degradation rates of pure iron and pure magnesium in t

Method used

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  • Zn-Cu series zinc alloy as well as preparation method and applications thereof
  • Zn-Cu series zinc alloy as well as preparation method and applications thereof
  • Zn-Cu series zinc alloy as well as preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment 1, preparation cast state Zn-Cu alloy

[0071] Using pure Zn (99.99wt.%) and pure Cu (99.9wt.%) (purchased from Huludao Zinc Industry Co., Ltd.) as raw materials, according to different mass ratios (the mass ratios of Zn and Cu are 98:2, 99 : 1, 99.5: 0.5) mixed in CO 2 +SF 6 Under atmosphere protection, smelting at 800 ° C, after the raw materials are fully melted, after 10 minutes of heat preservation, the circulating water is rapidly cooled, and a Zn-Cu alloy ingot (that is, the Zn-Cu alloy of the present invention, as shown in the photo) is obtained. figure 1 shown), figure 1 Among them, Zn-0.5Cu means that the mass ratio of Zn to Cu is 99.5:0.5, Zn-1Cu means that the mass ratio of Zn to Cu is 99:1, and Zn-2Cu means that the mass ratio of Zn to Cu is 98:2.

Embodiment 2

[0072] Embodiment 2, preparation extruded state Zn-Cu alloy

[0073] First, the as-cast Zn-Cu alloy ingot is prepared according to the steps in Example 1 of the present invention, and the Zn-Cu alloy bar is prepared by extrusion (that is, the Zn-Cu zinc alloy of the present invention, as shown in the photo) figure 2 As shown), radial extrusion was adopted, the ingot was held for 2 hours, the holding temperature was 260°C, the extrusion temperature was 260°C, the extrusion ratio was 36, and the extrusion speed was 1mm / s to prepare a Zn-Cu alloy with a diameter of 10mm bar.

Embodiment 3

[0074] Embodiment 3, Zn-Cu system zinc alloy microstructural analysis:

[0075] The Zn-Cu series zinc alloy in Example 2 of the present invention was prepared by wire cutting to prepare a φ10x1mm sample, which was sequentially ground and polished by 400#, 800#, 1200# and 2000# SiC sandpaper series. After ultrasonic cleaning in acetone, absolute ethanol and deionized water for 15 min, dry at 25 °C. The sample was subjected to X-ray diffraction analysis, etched with 4% nitric acid alcohol for 5-30 seconds, washed with deionized water, dried, and observed under a metallographic microscope.

[0076] image 3 For the metallographic phase of the Zn-Cu series zinc alloy prepared in Example 2 of the present invention, from image 3 It can be seen that the grain size gradually decreases with the increase of Cu content. No obvious second phase was observed in Zn-0.5Cu and Zn-1Cu alloys. In Zn-2Cu alloy, the second phase was evenly distributed at the grain boundaries.

[0077] Figu...

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Abstract

The invention discloses Zn-Cu series zinc alloy as well as a preparation method and applications of the Zn-Cu series zinc alloy. The Zn-Cu series zinc alloy comprises Zn and Cu, specifically, the weight percentage of Cu in the Zn-Cu series zinc alloy is 0-30 %, but is not 0. The preparation method comprises the following steps: (1) mixing Zn and Cu, thus obtaining a mixture; (2) carrying out treatment on the mixture according to the following step (a) or (b), and carrying out cooling, thus obtaining the Zn-Cu series zinc alloy: (a) carrying out smelting or sintering on the mixture under the protection of the atmosphere of CO2 and SF6; and (b) under the protection of vacuum atmosphere, dissolving hydrogen in the mixture, and carrying out smelting. The prepared Zn-Cu series zinc alloy has the suitable mechanical property, adjustable corrosion rate, good cell compatibility, good blood compatibility and excellent antibacterial property, and can be used for preparing biomedical implantation materials.

Description

technical field [0001] The invention relates to a Zn-Cu series zinc alloy and its preparation method and application, belonging to the technical field of medical metal material preparation. Background technique [0002] Biomedical materials, also known as biomaterials, refer to materials that are used for medical purposes to diagnose, treat, repair or replace human tissues and organs or enhance their functions. With the development of society and the improvement of living standards, people's pursuit of a higher quality of life is also constantly improving. In order to develop implants with superior clinical performance, researchers have developed a series of new materials and technologies. In actual clinical applications, some specific clinical problems require that the materials implanted in the body only play a temporary supporting role to achieve tissue healing, such as fractures, vascular blockage, etc. Implants made of degradable biomaterials can gradually degrade aft...

Claims

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Application Information

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IPC IPC(8): A61L17/00A61L17/06A61L17/14A61L27/04A61L27/30A61L27/34A61L27/54A61L27/58A61L31/02A61L31/08A61L31/10A61L31/14A61L31/16C22C18/02C22C18/00C22C1/02C22C1/04
CPCA61L17/005A61L17/06A61L17/145A61L27/047A61L27/306A61L27/34A61L27/54A61L27/58A61L31/022A61L31/088A61L31/10A61L31/148A61L31/16A61L2300/102A61L2300/404A61L2300/604A61L2300/606C22C1/02C22C1/0483C22C18/00C22C18/02C08L67/04
Inventor 郑玉峰袁威杨宏韬郭晖曲新华戴尅戎
Owner 湖南华翔医疗科技有限公司
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