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A kind of zn-li-mn series zinc alloy and its preparation method and application

A zn-li-mn, zinc alloy technology, applied in medical science, prosthesis, etc., can solve the problems of toxic and side effects of degradation products, loss of mechanical integrity of implants, etc., achieve excellent mechanical properties, improve plasticity, and strengthen the matrix Effect

Active Publication Date: 2021-09-28
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the fact that iron-based alloys degrade too slowly in the human body, and the degradation products will have certain toxic and side effects on the human body, the research focus of medical degradable metals in recent years is mainly on medical degradable magnesium alloys, such as AZ31, WE43, Mn- Ca et al. Although magnesium alloys have attractive application prospects as biomaterials, studies have found that magnesium alloys corrode too quickly, and the implant will soon lose its mechanical integrity before the tissues and organs are fully healed. It is necessary to develop new degradable alloys to meet clinical needs

Method used

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  • A kind of zn-li-mn series zinc alloy and its preparation method and application
  • A kind of zn-li-mn series zinc alloy and its preparation method and application
  • A kind of zn-li-mn series zinc alloy and its preparation method and application

Examples

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Effect test

Embodiment 1

[0068] Embodiment 1, preparation as-cast Zn-Li-Mn series zinc alloy

[0069] Using pure zinc (99.99wt.%), zinc-lithium intermetallic compound, zinc-manganese intermetallic compound as raw materials, according to the mass ratio in the following table:

[0070] Zn Li mn 99.8％ 0.1％ 0.1％ 99.5％ 0.1％ 0.4％ 99.1％ 0.1％ 0.8％ 99.5％ 0.4％ 0.1％ 99.2％ 0.4％ 0.4％ 98.8％ 0.4％ 0.8％ 99.1％ 0.8％ 0.1％ 98.8％ 0.8％ 0.4％ 98.4％ 0.8％ 0.8％

[0071] mixed, in CO 2 +SF 6 Under the protection of the atmosphere, smelt at 600 ° C, stir evenly, and after standing, pouring and cooling, the Zn-Li-Mn series zinc alloy (such as figure 1 shown).

Embodiment 2

[0072] Embodiment 2, preparation extruded state Zn-Li-Mn series zinc alloy

[0073] First, according to the steps in Example 1 of the present invention, the as-cast Zn-Li-Mn alloy ingot is prepared, and the Zn-Li-Mn alloy rod is prepared by extrusion (such as figure 2 shown), using radial extrusion, ingot heat preservation for 2h, heat preservation temperature 260°C or 220°C, extrusion temperature 260°C or 220°C, extrusion ratio 36 or 16, extrusion speed 1mm / s to prepare the diameter It is a 10mm Zn-Li-Mn alloy rod.

Embodiment 3

[0074] Embodiment 3, preparation rolling state Zn-Li-Mn series zinc alloy

[0075] First, the as-cast Zn-Li-Mn zinc alloy ingot is prepared according to the steps in Example 1, and the Zn-Li-Mn zinc alloy plate is prepared by rolling (such as image 3 shown), using unidirectional rolling, followed by hot rolling and finish rolling. Before rolling, keep warm at the rolling temperature for 15 minutes. Carry out down-rolling, down-rolling 0.5mm in each pass, the amount of reduction in each pass is 2%, and the final thickness of the plate is 2mm.

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Abstract

The invention discloses a Zn-Li-Mn series zinc alloy as well as a preparation method and application thereof. It includes Zn, Li and Mn; in terms of mass percentage, the mass percentage of Li in the zinc alloy is 0-1%, but not including 0; the mass percentage of Mn in the zinc alloy is 0-1%, but not 0 is included; balance is zinc. The zinc alloy prepared by the invention has excellent mechanical properties, can provide long-term effective supporting force in vivo, has excellent cell compatibility and blood compatibility, and can be used for the preparation of biomedical implants.

Description

technical field [0001] The invention relates to a Zn-Li-Mn series zinc alloy and its preparation method and application, belonging to the technical field of medical metal material preparation. Background technique [0002] Once a medical device made of biomaterials is implanted in the body, it will interact with the body to promote the diagnosis and treatment of the organism, or complete the repair and replacement of damaged tissues or organs in the body. Obviously, during the interaction with the living body, some devices are suitable for long-term existence in the body, and long-term service to promote curative effect, but some devices are not suitable for long-term existence, only need temporary or short-term effect, with the repair or regeneration of tissues or organs , these devices are gradually degraded and absorbed. In the same way, biological materials can be roughly divided into permanent biological materials and degradable biological materials according to their ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22C1/02A61L27/04A61L27/58
CPCA61L27/047A61L27/58C22C1/02C22C18/00
Inventor 郑玉峰杨宏韬张泽川
Owner PEKING UNIV
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