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Zn-Ca series zinc alloy as well as preparation method and application of Zn-Ca series zinc alloy

A zinc alloy, zn-ca technology, applied in medical science, prosthesis, etc., to achieve the effect of overcoming excessive degradation rate, good tissue compatibility, and long-term effective mechanical support

Active Publication Date: 2014-12-10
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there are no literature and patent reports on the synthesis and properties of Zn-Ca alloys at home and abroad, and it is proposed to use Zn-Ca alloys as biodegradable biomedical materials.

Method used

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  • Zn-Ca series zinc alloy as well as preparation method and application of Zn-Ca series zinc alloy
  • Zn-Ca series zinc alloy as well as preparation method and application of Zn-Ca series zinc alloy
  • Zn-Ca series zinc alloy as well as preparation method and application of Zn-Ca series zinc alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Embodiment 1, preparation as-cast Zn-Ca series alloy

[0091] Using pure Zn (99.99wt.%) and pure Ca (99.95wt.%) (purchased from Beijing Cuibin Nonferrous Metal Technology Development Center) as raw materials, according to different mass ratios (the mass ratio of Zn and Ca is 99:1 and 95:5) mixed in CO 2 +SF 6 Under the protection of the atmosphere, smelt at 800 ° C, after the raw materials are fully melted, after 10 minutes of heat preservation, the circulating water is rapidly cooled, and the Zn-Ca alloy ingot is obtained (photo as figure 1 shown), where Zn-1Ca means that the mass ratio of Zn to Ca is 99:1, and Zn-5Ca means that the mass ratio of Zn to Ca is 95:5.

Embodiment 2

[0092] Embodiment 2, preparation rolling state Zn-Ca series alloy

[0093] First, the as-cast Zn-Ca alloy ingot is prepared according to the steps in Example 1; then the Zn-Ca alloy ingot obtained above is hot-rolled, and the ingot is preheated at 250° C., and then hot-rolled. It is repeatedly rolled in a reciprocating rolling mill with a hot rolling temperature of 250°C, and finally rolled to 1.5mm in a finishing mill at 250°C.

[0094] figure 2 This is a photograph of the as-rolled Zn-Ca alloy (Zn-1Ca) obtained in this example.

Embodiment 3

[0095] Embodiment 3, preparation extruded state Zn-Ca series alloy

[0096] Prepare according to the following 1) or 2) steps:

[0097] 1) First, the as-cast Zn-Ca alloy ingot (Zn-1Ca) was prepared according to the steps in Example 1, and the Zn-Ca alloy rod (Zn-1Ca) was prepared by extrusion, and radial extrusion Zn-Ca alloy rods (Zn-1Ca) with a diameter of 10 mm were prepared at an extrusion temperature of 200°C and an extrusion ratio of 20.

[0098] 2) First prepare the as-cast Zn-Ca alloy ingot according to the steps in Example 1, and use a high-vacuum rapid quenching system to prepare a rapidly solidified Zn-Ca alloy thin strip. The specific method is: mix the raw materials according to the stated ratio Afterwards, a high-vacuum quenching system is used to prepare rapidly solidified Zn-Ca thin strips. The parameters are 2-8g feeding amount, 3-7kW induction heating power, 0.80mm distance between nozzle and roller, 0.1MPa injection pressure, and 2000r / mln roller speed. An...

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Abstract

The invention discloses a Zn-Ca series zinc alloy as well as a preparation method and application of the Zn-Ca series zinc alloy. The zinc alloy comprises Zn and Ca, wherein the mass percent of Ca in the zinc alloy ranges from 0% to 30%, but is not equal to 0. The zinc alloy also comprises trace elements including Si, P, Li, Ag, Sn and at least one selected from rare earth elements, wherein the mass percent of the trace elements ranges from 0% to 3%, but is not equal to 0. The mechanical property of the Zn-Ca series zinc alloy disclosed by the invention meets the requirements for strength and toughness of a medical implant material, is nontoxic and favorable in tissue compatibility and blood compatibility, can be degraded by using body fluid and can be applied to preparation of medical implants; and the dissolved metal ions can be absorbed and utilized by living bodies to promote bone growth or can be discharged out of bodies through metabolism.

Description

technical field [0001] The invention relates to a Zn-Ca series zinc alloy and its preparation method and application, in particular to a Zn-Ca series zinc alloy and its preparation method and its application in the preparation of body fluid degradable medical implants, belonging to medical metal materials Preparation technology field. Background technique [0002] Biomedical materials currently used in clinical practice mainly include biomedical metal materials, inorganic materials, polymer materials, composite materials, and bionic materials. Compared with polymer materials and ceramic materials, medical metal materials have higher strength, toughness and processing performance, so they are the most widely used. Such as: 316L, 317L, 304V stainless steel, Co-Cr-Mo alloy, pure titanium, Ti-6Al-4V, TiNi alloy, etc. These materials are non-degradable in the human body and are permanently implanted. When the implant expires in the human body, it must be removed through a secon...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22C1/02A61L27/04
Inventor 郑玉峰李华芳秦岭
Owner PEKING UNIV
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