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A kind of preparation method of porous mg-based amorphous alloy for bone

A technology of amorphous alloy and bone, which is applied in the field of biomedicine, can solve the problems of loss of excellent properties, and achieve the effects of excellent corrosion resistance, no work hardening, and large elastic limit

Active Publication Date: 2017-06-09
THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Amorphous alloys are in a metastable state in thermodynamics, and can be transformed into crystalline alloys with a more stable structure under heating conditions, resulting in the loss of their excellent properties

Method used

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  • A kind of preparation method of porous mg-based amorphous alloy for bone
  • A kind of preparation method of porous mg-based amorphous alloy for bone
  • A kind of preparation method of porous mg-based amorphous alloy for bone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a porous Mg-based amorphous alloy for bones, comprising the following steps:

[0036] Step 1, prepare master alloy:

[0037] (1) After the raw material is cleaned and air-dried, it is put into a water-cooled copper mold crucible; wherein, the raw material is Mg:Zn:Ca=15:5:1 by mass ratio, and the batching is carried out;

[0038] (2) Put the crucible with the ingredients in the vacuum melting furnace, when the vacuum degree is greater than or equal to 5.0×10 -3 When the temperature is Pa, argon gas is introduced, the graphite electrode is close to the raw material by 1-2 mm, and the arc is energized; after all the metals are melted, the power is disconnected; after cooling with the furnace, the alloy ingot is turned over with a turning spoon;

[0039] (3) Repeat the operation of step 1 (2) 3 times; make a master alloy with a diameter of 40mm and a thickness of 5mm button type;

[0040] Step 2, preparing amorphous strips:

[0041] (1) After the ...

Embodiment 2

[0048] A method for preparing a porous Mg-based amorphous alloy for bones, comprising the following steps:

[0049] Step 1, prepare master alloy:

[0050] (1) After the raw material is cleaned and air-dried, it is put into a water-cooled copper mold crucible; wherein, the raw material is Mg:Zn:Ca=17:4:1 by mass ratio, and the batching is carried out;

[0051] (2) Put the crucible with the ingredients in the vacuum melting furnace, when the vacuum degree is greater than or equal to 5.0×10 -3 At Pa, argon gas is introduced, the graphite electrode is close to the raw material by 1-2 mm, and the arc is energized; after all the metals are melted, the power supply is disconnected; after cooling with the furnace, the alloy ingot is turned over with a turning spoon;

[0052] (3) Repeat the operation of step 1 (2) 4 times; make a master alloy with a diameter of 50mm and a thickness of 4mm button type;

[0053] Step 2, preparing amorphous strips:

[0054] (1) After the master alloy is ...

Embodiment 3

[0062] A method for preparing a porous Mg-based amorphous alloy for bones, comprising the following steps:

[0063] Step 1, prepare master alloy:

[0064] (1) After the raw material is cleaned and air-dried, it is put into a water-cooled copper mold crucible; wherein, the raw material is Mg:Zn:Ca=20:3:3 by mass ratio, and the batching is carried out;

[0065] (2) Put the crucible with the ingredients in the vacuum melting furnace, when the vacuum degree is greater than or equal to 5.0×10- 3 When the temperature is Pa, argon gas is introduced, the graphite electrode is close to the raw material by 1-2 mm, and the arc is energized; after all the metals are melted, the power is disconnected; after cooling with the furnace, the alloy ingot is turned over with a turning spoon;

[0066] (3) Repeat the operation of step 1 (2) 5 times; make a master alloy with a diameter of 60mm and a thickness of 3mm button type;

[0067] Step 2, preparing amorphous strips:

[0068] (1) After the ...

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Abstract

The invention relates to a preparing method for a porous Mg-based amorphous alloy for bones, and belongs to the biomedical field. The preparing method includes the specific steps that (1) a mother alloy is prepared; (2) amorphous strips are prepared; (3) amorphous powder is prepared; (4) cold extruding is carried out; and (5) hot extrusion is carried out. Alloy compositions used in the preparing method belong to easily-formed amorphous alloy compositions; the size of amorphous alloy powder used in hot extrusion can be controlled through the ball-milling time; the hot extrusion temperature is lower and approaches the boiling point of water, and the structure is still the amorphous structure after extrusion is completed; the porosity of the porous amorphous alloy can be controlled; and the amorphous alloy has the high intensity and the high toughness, is large in elastic limit, free of work hardening and excellent in corrosion resistance and the like.

Description

technical field [0001] The invention belongs to the field of biomedicine, in particular to a method for preparing a porous Mg-based amorphous alloy for bones. Background technique [0002] Porous bulk amorphous alloys have the characteristics of high strength and toughness, large elastic limit, no work hardening, and excellent corrosion resistance, which have broad application prospects in the field of biomedical artificial bones. Amorphous alloys are in a metastable state thermodynamically, and can transform into crystalline alloys with a more stable structure under heating conditions, resulting in the loss of their excellent properties. Amorphous alloys can be easily processed in the supercooled liquid phase region, which is an important step towards the application of amorphous alloys. The thermal stability of the amorphous alloy in its supercooled liquid phase region is an important basis for determining whether the amorphous alloy is suitable for processing and the sel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22C1/04
CPCC22C1/0408C22C45/005C22C2200/02
Inventor 张杭州梁庆威白希壮牛平王岩峰宋禾马笑雪王志宏盛伟伟梁佐迪
Owner THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV