A high strength and toughness degradable zinc alloy with high work hardening rate and its preparation method and application

A technology of work hardening and zinc alloy, which is applied in surgery, medical science, etc., can solve the problems of uneven deformation, low work hardening rate of zinc alloy, fracture or corrosion, etc., and achieve the effect of good plasticity and toughness

Active Publication Date: 2021-11-09
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the medical device products made of zinc alloy are loaded, they are prone to uneven deformation, resulting in local fracture or corrosion, leading to early failure of the product. At present, there is no suitable method to improve or significantly increase the work hardening rate of zinc alloy.
The present invention aims at the problem of low work-hardening rate of zinc alloys, and discloses a high-strength and tough degradable zinc alloy with high work-hardening rate and its preparation method and application

Method used

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  • A high strength and toughness degradable zinc alloy with high work hardening rate and its preparation method and application
  • A high strength and toughness degradable zinc alloy with high work hardening rate and its preparation method and application
  • A high strength and toughness degradable zinc alloy with high work hardening rate and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A high strength and toughness degradable zinc alloy with high work hardening rate, including Zn matrix, Zn+Mg refined and dispersed in Zn matrix 2 Zn 11 Eutectic structure, micron-sized YZn is also dispersed in the Zn matrix 12 , Zn+Mg 2 Zn 11 Submicron YZn is dispersed in the eutectic structure 12 and nanoscale YZn 12 , submicron YZn 12 and nanoscale YZn 12 The area ratio is not greater than 85:15.

[0035] The composition of the zinc alloy is: Mg: 0.8%, Y: 0.1%, the rest is Zn, and the mass ratio of Y to Mg in the alloy is not higher than 0.3.

[0036] The micron-scale YZn 12 The particle size is >2μm; the submicron YZn 12 The particle size is 0.2 ~ 1μm; the nanoscale YZn 12 The particle size is <200nm.

[0037] A method for preparing a high-strength and tough degradable zinc alloy with high work hardening rate, preparing Zn-0.8%Mg-0.1%Y alloy (mass percentage), comprising the following steps:

[0038] (1) Ingredients: weighing according to the ingredients...

Embodiment 2

[0044] A high strength and toughness degradable zinc alloy with high work hardening rate, including Zn matrix, Zn+Mg refined and dispersed in Zn matrix 2 Zn 11 Eutectic structure, micron-sized YZn is also dispersed in the Zn matrix 12 , Zn+Mg 2 Zn 11 Submicron YZn is dispersed in the eutectic structure 12 and nanoscale YZn 12 , submicron YZn 12 and nanoscale YZn 12 The area ratio is not greater than 85:15.

[0045] The composition of the zinc alloy is: Mg: 1.7%, Y: 0.5%, the rest is Zn, and the mass ratio of Y to Mg in the alloy is not higher than 0.3.

[0046] The micron-scale YZn 12 The particle size is >2μm; the submicron YZn 12 The particle size is 0.2 ~ 1μm; the nanoscale YZn 12 The particle size is <200nm.

[0047] A preparation method of a high-strength and tough degradable zinc alloy with a high work hardening rate, prepares Zn-1.7%Mg-0.5%Y alloy (mass percentage), and its preparation method is as follows:

[0048] (1) Ingredients: weighing according to the...

Embodiment 3

[0052] A high strength and toughness degradable zinc alloy with high work hardening rate, including Zn matrix, Zn+Mg refined and dispersed in Zn matrix 2 Zn 11 Eutectic structure, micron-sized YZn is also dispersed in the Zn matrix 12 , Zn+Mg 2 Zn 11 Submicron YZn is dispersed in the eutectic structure 12 and nanoscale YZn 12 , submicron YZn 12 and nanoscale YZn 12 The area ratio is not greater than 85:15.

[0053] The composition of the zinc alloy is: Mg: 1.5%, Y: 0.3%, the rest is Zn, and the mass ratio of Y to Mg in the alloy is not higher than 0.3.

[0054] The micron-scale YZn 12 The particle size is >2μm; the submicron YZn 12 The particle size is 0.2 ~ 1μm; the nanoscale YZn 12 The particle size is <200nm.

[0055] A preparation method of a high-strength and tough degradable zinc alloy with a high work hardening rate, prepares Zn-1.5%Mg-0.3%Y alloy (mass percentage), and its preparation method is as follows:

[0056] (1) Ingredients: weighing according to the...

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Abstract

The invention discloses a high-strength, tough and degradable zinc alloy with high work hardening rate, including a Zn matrix, Zn+Mg refined and dispersed in the Zn matrix 2 Zn 11 Eutectic structure, micron-sized YZn is also dispersed in the Zn matrix 12 , Zn+Mg 2 Zn 11 Submicron YZn is dispersed in the eutectic structure 12 and nanoscale YZn 12 , submicron YZn 12 and nanoscale YZn 12 The area ratio is not greater than 85:15. The invention also discloses a preparation method of a high-strength and tough degradable zinc alloy with high work hardening rate and its application in biomedical degradable metal materials. The zinc alloy of the invention has both high strength and high toughness, its tensile strength is 340-530MPa, and its elongation is 10-32%, which can meet the requirements of different medical devices on the mechanical properties of the zinc alloy.

Description

technical field [0001] The invention relates to a high-strength and tough degradable zinc alloy with high work hardening rate and a preparation method and application thereof, belonging to the technical field of zinc alloy materials. Background technique [0002] Due to their suitable biodegradation rate (between magnesium and iron) and good biocompatibility, zinc and its alloys are considered to be the most potential degradable metal materials. The mechanical properties of pure zinc are poor, and it is difficult to meet the mechanical properties requirements of degradable metals. Therefore, alloying has become the main means to improve the mechanical properties of zinc alloys. In recent years, zinc alloys with various components have been developed, mainly including Zn-Mg base, Zn-Cu base, Zn-Mn base, Zn-Ag base and Zn-Li base, etc., as well as various ternary alloys formed on the basis of these alloys. and multiple alloy systems. Patents [CN105624468B, CN108588484B, CN1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22C1/03B21C23/00A61L31/02A61L31/14
CPCA61L31/022A61L31/148B21C23/001B21C23/002C22C1/03C22C18/00
Inventor 刘欢黄河任康轩吴玉娜袁玉春禚孝儒江静华马爱斌
Owner HOHAI UNIV
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