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

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

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

AI Technical Summary

Benefits of technology

This patented technology describes an improved type of biocompatible plastic called Znium (ZN) which contains small amounts of rare earth metals like yttrium). These tiny particles are added into this plastic during manufacturing process before use. By doing these things we have made sure they don't affect its quality when used inside body environments where there may be strong acidic conditions. They work well with other types of resins without losing their original qualities.

Problems solved by technology

This patented technical problem addressed in this patent relates to developing a safer and effective medical device made entirely from nonmetalloorganic substances like those described earlier in the patents.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Embodiment 1, preparation as-cast Zn-Sr alloy

[0094] Using pure Zn (99.99wt.%) and pure Sr (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 Sr is 99:1 and 95:5) mixed in CO 2 +SF 6 Under the protection of the atmosphere, smelt at 750 ° C, after the raw materials are fully melted, after 10 minutes of heat preservation, the circulating water is rapidly cooled, and the Zn-Sr alloy ingot is obtained (photo as figure 1 shown), where Zn-1Sr means that the mass ratio of Zn to Sr is 99:1, and Zn-5Sr means that the mass ratio of Zn to Sr is 95:5.

Embodiment 2

[0095] Embodiment 2, preparation rolled state Zn-Sr alloy

[0096] First, the as-cast Zn-Sr alloy ingot is prepared according to the steps in Example 1; It is repeatedly rolled in a rolling mill with a hot rolling temperature of 250°C, and finally rolled to a thickness of 1.5mm at 250°C in a finishing mill.

[0097] figure 2 This is a photograph of the as-rolled Zn-Sr alloy (Zn-1Sr) obtained in this example.

Embodiment 3

[0098] Embodiment 3, preparation extruded state Zn-Sr alloy

[0099] Prepare according to the following 1) or 2) steps:

[0100] 1) First, the as-cast Zn-Sr alloy ingot (Zn-1Sr) is prepared according to the steps in Example 1, and the Zn-Sr alloy rod (Zn-1Sr) is prepared by extrusion, and the radial Extruding, the extrusion temperature is 200° C., the extrusion ratio is 20, and a Zn-Sr alloy rod (Zn-1Sr) with a diameter of 10 mm is prepared.

[0101] 2) First, according to the steps in Example 1, the as-cast Zn-Sr alloy ingot is prepared, and a high-vacuum rapid quenching system is used to prepare a rapidly solidified Zn-Sr alloy thin strip. After mixing, a high-vacuum quenching system is used to prepare rapidly solidified Zn-Sr 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 and nozzle slit size 1film×8mm×6mm. Then crush the ribbon and press it into a bl...

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Abstract

The invention discloses a Zn-Sr series zinc alloy as well as a preparation method and application of the Zn-Sr series zinc alloy. The zinc alloy comprises Zn and Sr, wherein the mass percent of Sr in the zinc alloy ranges from 0% to 10%, 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-Sr 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

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Claims

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Application Information

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Owner PEKING UNIV
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