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Method for preparing degradable zinc alloy material by metal powder sintering

A technology for degrading materials and metal powders, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of inaccurate element ratio, large difference in melting point of alloy elements, etc., and achieve short process flow, low production cost, and hinder oxidation. Effect

Inactive Publication Date: 2020-06-26
长沙镁捷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing a zinc alloy degradable material by sintering metal powder, the purpose of which is to solve the problems of large differences in the melting points of alloy elements and inaccurate element ratios in the prior art

Method used

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  • Method for preparing degradable zinc alloy material by metal powder sintering
  • Method for preparing degradable zinc alloy material by metal powder sintering
  • Method for preparing degradable zinc alloy material by metal powder sintering

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Step 1. Select zinc powder and iron powder with appropriate particle size. The particle size of zinc powder is between 10μm and 20μm, the particle size of iron powder is between 20μm and 50μm, and the purity of the powder is above 99.9%;

[0041] Step 2. The zinc powder and iron powder are weighed on an electronic balance according to the mass ratio of Zn-0.5% Fe alloy composition, put into a sealing mixing tank filled with argon, and mixed on a three-dimensional mixer , 40min of mixing;

[0042] Step 3. Put the mixed metal powder into a planetary high-energy ball mill for ball milling, the ball-to-material ratio is 10:1, and the milling time is 4h;

[0043] Step 4. Place the ball-milled zinc powder and iron powder in a mold and compact tightly under a cold press with a pressing pressure of 10 MPa; place the pressed metal powder in a vacuum hot pressing sintering furnace protected by argon Medium sintering, heat up from room temperature to 360°C, hold for 10min, then heat up ...

Embodiment 2

[0048] Step 1. Select zinc powder and magnesium powder with appropriate particle size, the particle size of zinc powder is between 40-50μm, the particle size of magnesium powder is between 40-50μm, and the purity of the powder is above 99.9%;

[0049] Step 2. Mix the zinc powder and magnesium powder, weigh them on an electronic balance according to the Zn-0.5% Mg alloy composition, put them into a sealing mixing tank filled with argon, and mix them on a three-dimensional mixer. Feed 60min;

[0050] Step 3. Put the mixed metal powder into a planetary high-energy ball mill for ball milling with a ball-to-material ratio of 10:1 and a milling time of 12h;

[0051] Step 4. Place the ball-milled metal powder in a mold and compact it tightly under a cold press with a pressing pressure of 50MPa; place the metal powder after being pressed into a vacuum hot-pressing sintering furnace protected by argon. Raise the room temperature to 360°C, hold for 20min, then heat up to the sintering tempera...

Embodiment 3

[0056] Step 1. Select zinc powder, iron powder, and magnesium powder with appropriate particle size, the particle size of the powder is between 20μm and 30μm, and the purity of the powder is above 99.9%;

[0057] Step 2. Weigh the zinc powder, iron powder, and magnesium powder according to the designed alloy composition Zn-1% Fe-1% Mg on an electronic balance, and put them into a sealing mixing tank filled with argon. Mixing on the three-dimensional mixer, mixing for 60 minutes;

[0058] Step 3. The mixed metal powder is put into a planetary high-energy ball mill for ball milling. The ratio of ball to material is generally 10:1, and the milling time is 24h;

[0059] Step 4. Place the ball-milled metal powder in a mold and compact it tightly under a cold press with a pressing pressure of 40MPa. The metal powder after compression is heated from room temperature to 360°C for 15 minutes, and then heated to the sintering temperature 1000℃, the sintering time is 30min, the heating rate is...

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Abstract

The invention provides a method for preparing a degradable zinc alloy material by metal powder sintering. The method includes the following steps that zinc powder and metal element powder are selected; the zinc powder and the metal element powder are put into a mixing tank to be mixed on a mixing machine; mixed powder obtained after mixing is put into a planetary high-energy ball mill to be subjected to ball milling; the ball-milled mixed powder is pressed and sintered; after sintering is completed, a mixed powder blank is cooled to the room temperature, the pressure is removed, and the vacuumstate and argon protection are broken to obtain a sintered zinc alloy product; the zinc alloy sample is annealed and forged; and the forged zinc alloy is rolled or extruded to obtain the zinc alloy sheet or bar. According to the method, by adopting a powder metallurgy preparation technology, the problem of difference of melting points of alloy elements can be effectively solved, and the proportion of the elements in the alloy can be accurately controlled, so that the obtained zinc alloy material is low in oxygen content and good in quality; and besides, the preparation method is stable and can realize batch production.

Description

Technical field [0001] The invention relates to the new technical field of biomedical new materials and powder metallurgy processing, in particular to a method for preparing a zinc alloy degradable material through metal powder sintering. Background technique [0002] Degradable biomedical materials can be degraded after the service period is completed in the animal body fluid environment, reducing or avoiding life-long problems caused by permanent implantation, such as long-term endothelial dysfunction, permanent physical stimulation, and local chronic inflammation. The elements in the commonly used biodegradable metal medical materials should be excreted during the body's metabolism without causing harm to tissues or organs. It is best to be some functional elements that are necessary for the human body or can promote tissue healing; at the same time, Degradable metal medical materials should also have a suitable degradation rate, so as to ensure that the material can still mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/04B22F3/02B22F3/14B22F3/24C22F1/16C22C18/00
CPCB22F9/04B22F3/02B22F3/14B22F3/24C22F1/165C22C18/00B22F2009/043B22F2003/248B22F2999/00B22F1/05
Inventor 余琨
Owner 长沙镁捷新材料科技有限公司
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