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Biodegradable Zn-Mg-Zr alloy material, preparation method and application

A technology of zn-mg-zr and alloy materials, which is applied in the field of biodegradable metal materials, can solve problems such as accumulation and narrow inner cavity, and achieve the effects of reducing costs, improving processing performance, and improving processing performance

Active Publication Date: 2018-08-17
CIXI INST OF BIOMEDICAL ENG NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the degradation products of iron-based alloys will accumulate in the body, causing side effects such as lumen stenosis

Method used

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  • Biodegradable Zn-Mg-Zr alloy material, preparation method and application
  • Biodegradable Zn-Mg-Zr alloy material, preparation method and application
  • Biodegradable Zn-Mg-Zr alloy material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Using pure zinc (99.9wt.%), pure magnesium (99.9wt.%) and a zinc-zirconium master alloy with a Zr content of 33% as raw materials, and considering the amount of burning loss according to the mass ratio of zinc, magnesium and zirconium is 99:0.5: 0.5 mixing, the mixed raw materials were melted at 550°C, held for 5 minutes, then slag was removed, and then poured into a mold with a diameter of 60mm at a pouring temperature of 520°C, and the Zn-0.5Mg-0.5Zr alloy ingot was obtained after cooling. Stir and stand still when melting, and obtain Zn-0.5Mg-0.5Zr alloy ingot after cooling.

[0047] Using a metallographic microscope to observe the morphology of the as-cast Zn-Mg-Zr alloy, it is obtained as follows figure 1 In the metallographic picture shown, the grain size is large, the magnesium-zinc phase is distributed along the grain boundary, and the zinc-zirconium phase is dispersed on the matrix.

[0048] Using a scanning electron microscope to further observe the morpholog...

Embodiment 2～5

[0056] Examples 2 to 5 all use pure zinc, pure magnesium and zinc-zirconium mesophase as raw materials, the method for preparing Zn-Mg-Zr alloy, the test method for mechanical properties and the test method for degradation rate are all the same as in Example 1, and the specific process The parameters and performance results are shown in Table 1.

[0057] The preparation method, test method and process parameter and performance result of table 1 embodiment 2~5

[0058]

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Abstract

The invention discloses a biodegradable Zn-Mg-Zr alloy material. The biodegradable Zn-Mg-Zr alloy material is characterized in that the Zn-Mg-Zr alloy material comprises, by mass, 0.0001-10% of Mg, 0.0001-5% of Zr and the balance Zn. The alloy material is low in cost, nontoxic, excellent in mechanical property, low in degradation rate and excellent in biocompatibility. The invention further discloses a preparation method of the biodegradable Zn-Mg-Zr alloy material. The method is easy to implement and low in cost, plate-shaped and rod-shaped materials with different size and cross section requirements can be prepared as required, and the method can be used for preparation of bone lamellas, bone nails and other bone implantation materials as well as cardiovascular stents and other medical materials.

Description

technical field [0001] The invention belongs to the field of biodegradable metal materials, and in particular relates to a biodegradable Zn-Mg-Zr alloy material, a preparation method and an application. Background technique [0002] Biometallic materials are widely used clinically. At present, common biometallic materials include stainless steel, titanium alloy and cobalt-chromium alloy. material for permanent implants. However, such materials also have a series of problems during the implantation process, such as stress shielding effect, inflammatory response and heavy ion precipitation. In order to solve the problems caused by the above materials in clinical application, degradable metal materials came into being. The current research directions of degradable metal materials mainly include magnesium alloys, iron alloys and zinc alloys. Magnesium in magnesium alloy is an essential element for the human body and participates in metabolic reactions and the growth of bone t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/00C22C1/03C22C1/02A61L31/14A61L31/02
Inventor 高雪宋振纶杨丽景郭浦山姜建军郑必长许赪
Owner CIXI INST OF BIOMEDICAL ENG NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
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