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Biodegradable Zn-Mo zinc alloy and preparation method thereof

A biodegradable, zinc alloy technology, applied in the field of medical implant materials, can solve problems such as being unsuitable for medical implant materials, and achieve the effect of improving mechanical properties and biological functionality, and promoting repair and healthy operation.

Active Publication Date: 2018-12-28
北京尚宁科智医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Similar to the zinc alloy in Patent Document 1, this zinc alloy contains a large amount of Al and Ni elements that are harmful to the human body, and is not suitable for use as a medical implant material

Method used

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  • Biodegradable Zn-Mo zinc alloy and preparation method thereof
  • Biodegradable Zn-Mo zinc alloy and preparation method thereof
  • Biodegradable Zn-Mo zinc alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Composition, preparation and performance testing of biodegradable Zn-Mo-Mn ternary zinc alloy.

[0055] The chemical composition of the four inventive examples of the zinc alloy is shown in Table 1-1. The total amount of alloying elements added does not exceed 0.8%, and the balance is Zn, which belongs to low-alloyed zinc alloys with low cost. The preparation and processing flow of the zinc alloy is: smelting Mn-10Mo master alloy→smelting Zn-Mo-Mn ternary zinc alloy→hot rolling→heat treatment→cold rolling. The smelting of the Mn-10Mo master alloy uses high-purity Mo and Mn powder as raw materials, and the ingredients are formulated according to the mass percentage, the Mn content is 90% and the Mo content is 10%. After mixing, they are placed in a vacuum induction furnace, and the temperature is raised after vacuuming. to 1500° C., heat for 15 minutes, and then pour into a mold to obtain the Mn-10Mo master alloy. The smelting of the Zn-Mo-Mn ternary zinc alloy uses the...

Embodiment 2

[0066] Composition, preparation and performance testing of biodegradable Zn-Mo-Mn-Ti-Li quinary alloys.

[0067] The chemical composition of the four inventive examples of the zinc alloy is shown in Table 2-1. The total amount of alloying elements added does not exceed 1.2%, and the balance is Zn, which belongs to low-alloyed zinc alloys with low cost. The preparation and processing flow of the zinc alloy is: smelting Mn-20Mo-5Ti master alloy→smelting Zn-Mo-Mn-Ti-Li quinary zinc alloy→hot extrusion→heat treatment→hot extrusion. The smelting of the Mn-20Mo-5Ti master alloy uses high-purity Mn, Mo and Ti powders as raw materials, and mixes them according to the mass percentage of 75% Mn, 20% Mo and 5% Ti, and puts them into a vacuum induction furnace after mixing. After evacuating, the temperature was raised to 1600° C., kept for 10 minutes, and poured into a mold to obtain the Mn-20Mo-5Ti master alloy. The smelting of the Zn-Mo-Mn-Ti-Li quinary zinc alloy uses the Mn-20Mo-5Ti ...

Embodiment 3

[0076] Composition, preparation and performance testing of biodegradable Zn-Mo based quaternary zinc alloys.

[0077] The zinc alloy contains 4 alloying elements, 3 of which are essential alloying elements: Zn, Mo and Mn, and the 4th is a further added alloying element. The chemical composition of the four examples of the zinc alloy is shown in Table 3-1. The total amount of alloying elements added does not exceed 0.81%, and the balance is Zn, which belongs to low-alloyed zinc alloy and has low cost. The preparation and processing process of the zinc alloy is as follows: smelting Mn-30Mo master alloy→smelting Zn-Mo series quaternary zinc alloy→hot extrusion→heat treatment→cold rolling. The smelting of the Mn-30Mo master alloy uses high-purity Mo and Mn powder as raw materials, and mixes them according to the mass percentage of 70% Mn and 30% Mo. After mixing, put them in a vacuum induction furnace, heat up to 1700°C after vacuuming 10 minutes, and then poured into the mold to...

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Abstract

The invention relates to a biodegradable Zn-Mo zinc alloy, and belongs to the field of medical implant materials. The biodegradable Zn-Mo zinc alloy comprises the compositions of 001-3% of Mo, 0. 001-6% of Mn; then at least one of the elements containing Li, Na, K, C, Ce, La, Pr, Nd, Sm, Ho, Er, Gd, Lu, Sn, P, B, Se, Zr, Ca, Mg, Fe, Cu, Ag and Sr is selected, and total amount of alloying elementsadded can be optimized to control no more than 1.5% with the balance being Zn. The uniform distribution of Zn and refractory elements Mo, Ti and Ta in Zn matrix can be realized by exciting the metallurgical action of at least one element in Mn rich intermediate alloy. The preparation process of the zinc alloy is as follows: smelting rich Mn intermediate alloy smelting Zn Mo series zinc alloy deformation heat treatment. The preparation process of the zinc alloy comprises that smelting Mn-rich intermediate alloy; smelting Zn- Mo based zinc alloy; and deformation heat treatment. Yield strength of the zinc alloy is 100-550MPa, tensile strength is 150-750MPa, and elongation is 1. 3-104%; a degradation rate in the simulated body fluid does not exceed 0.8 mm / year; the cytotoxicity of L929 cellsand human bone marrow mesenchymal stem cells is level 0 or level 1, shows good biocompatibility, and can be used in a variety of medical implants.

Description

technical field [0001] The invention relates to the component design, preparation method and application field of a biodegradable Zn-Mo zinc alloy, belonging to the field of medical implant materials. Background technique [0002] The traditional main use of zinc metal is as a coating to prevent steel corrosion. In recent years, research on zinc and zinc alloys as a new generation of biodegradable metals has been developed at home and abroad. The corrosion rate of zinc is between that of iron and magnesium, and its degradation rate in organisms is moderate. It has biological safety and can be used as a medical implant material. However, pure zinc is soft, with a tensile strength of only 120MPa, making it difficult to manufacture medical implants that require load-bearing, such as coronary artery stents and bone nails. In addition, the common problem of as-cast pure zinc and zinc alloys is that they are extremely brittle, and the elongation at room temperature usually does n...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22C1/03C22F1/16
CPCC22C1/03C22C18/00C22F1/165
Inventor 石章智王鲁宁刘雪峰于静
Owner 北京尚宁科智医疗器械有限公司
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