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High-plasticity and biodegradable Zn-Mn-system zinc alloy and preparation method thereof

A biodegradable, zinc alloy technology, applied in tissue regeneration, medical science, prosthesis, etc., to achieve the effects of reducing fat content in the liver, high plasticity, and promoting growth recovery

Active Publication Date: 2017-09-19
北京尚宁科智医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are no documents and patents at home and abroad to report the preparation method and alloy properties of the Zn-Mn alloy described in this patent, and it is proposed to use the Zn-Mn alloy as a biodegradable biomedical material

Method used

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  • High-plasticity and biodegradable Zn-Mn-system zinc alloy and preparation method thereof
  • High-plasticity and biodegradable Zn-Mn-system zinc alloy and preparation method thereof
  • High-plasticity and biodegradable Zn-Mn-system zinc alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The hot-rolled Zn-Mn alloy sheet was prepared and the mechanical and corrosion properties of the material were measured.

[0040] The process flow is: raw material preparation and batching→alloy smelting and casting→homogenizing annealing→hot rolling→finished plate.

[0041] Using pure Zn (99.99%) and pure Mn (99.9%) as raw materials, mixed according to the following two mass percentages, put into the Al in the vacuum induction melting furnace 2 o 3 In the crucible: (1) 99.2% Zn and 0.8% Mn (2) 99.6% Zn and 0.4% Mn. Vacuumize first, and then introduce argon after the pressure in the vacuum induction melting furnace reaches 30Pa, so that the pressure of argon reaches 0.04MPa. The Al containing raw material was then heated under the protection of argon 2 o 3 The crucible was refined at 760°C for 5 minutes, and then the alloy melt was poured into a cylindrical high-purity graphite mold with a diameter of 75 mm, and cooled to room temperature in air to prepare Zn-0.8Mn ...

Embodiment 2

[0047] The cold-rolled Zn-0.4Mn alloy sheet was prepared and the mechanical properties of the material were tested.

[0048] The process flow is: hot-rolled sheet → cold-rolled → finished sheet.

[0049] The hot-rolled Zn-0.4Mn alloy plate is cold-rolled, and its thickness is rolled from 5mm to 1mm through 8 passes of cold-rolling. The deformation of each pass is 10.0%, 11.1%, 12.5%, 14.3%, 16.7%, 20%, 25%, 33.3%, and the total deformation is 80.0%.

[0050] image 3 For the cold-rolled Zn-0.4Mn alloy engineering stress-strain curve, by image 3 The yield strength of the cold-rolled Zn-0.4Mn alloy is 117.0MPa, the tensile strength is 168.0MPa, and the elongation is 75.6%, showing ultrahigh plasticity.

Embodiment 3

[0052] Preparation of Zn-0.4Mn alloy sheets by cyclic composite lamination rolling.

[0053] The technological process is: cold-rolled plate → surface treatment → billet assembly → compound cold rolling → heat treatment → compound hot rolling → surface treatment → billet assembly → ... (multiple cycles) ... → finished plate.

[0054] The surfaces to be compounded of two cold-rolled Zn-0.4Mn alloy plates with a thickness of 1 mm were polished with sandpaper, and then mechanically polished. Stack them up and down to form blanks, and connect them with spot welding at one end. The clad plate with a total thickness of 2 mm after billet assembly is sent to a cold rolling mill for clad rolling, with a deformation of 50%. After cold rolling, the thickness of the clad plate is reduced to 1 mm, and the thickness of a single layer is reduced to 0.5 mm. Heat treatment is carried out on the cold-rolled clad plate, and the process system is 200 ° C for 0.5 hours. Then carry out compound h...

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Abstract

The invention discloses a high-plasticity and biodegradable Zn-Mn-system zinc alloy and a preparation method thereof and belongs to the technical field of biomedical metallic material composition design and preparation. The zinc alloy is prepared from 0.1%-3% by mass of Mn and the balance Zn. The zinc alloy has the good mechanical properties after vacuum induction melting and plastic working and meets the requirements for strength and plasticity of medical implant materials. The zinc alloy is non-toxic and degradable in vivo and has the good histocompatibility and blood compatibility, and dissolved metal ions can be absorbed and utilized by organisms for promotion of repair of tissue and organs or can be excreted to the outside of the body through metabolism.

Description

technical field [0001] The invention relates to a highly plastic and biodegradable Zn-Mn series zinc alloy and a preparation method thereof, belonging to the technical field of composition design and preparation of biomedical metal materials. technical background [0002] Traditional medical metal materials mainly include stainless steel, titanium alloy and cobalt-based alloy, etc., which have good corrosion resistance. However, these materials are difficult to be degraded by the human body itself. Once implanted, they will exist in the human body for a long time. After completing their medical functions, they will bring adverse effects to people. Mental burden. At present, the biodegradable metal materials that have been studied more are magnesium and magnesium alloys, iron and iron alloys. However, the degradation rate of magnesium and magnesium alloys is too fast, and hydrogen gas will be released during the degradation process, leading to adverse reactions such as subc...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22C1/02C22F1/16A61L27/58A61L27/50A61L27/04A61L31/14A61L31/02
CPCA61L27/047A61L27/50A61L27/58A61L31/022A61L31/14A61L31/148A61L2430/06C22C1/02C22C18/00C22F1/165
Inventor 石章智王鲁宁张海军刘雪峰于静
Owner 北京尚宁科智医疗器械有限公司
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