CN115109909A - Preparation method of biomedical high-purity magnesium bone plate material - Google Patents
Preparation method of biomedical high-purity magnesium bone plate material Download PDFInfo
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- CN115109909A CN115109909A CN202210621682.2A CN202210621682A CN115109909A CN 115109909 A CN115109909 A CN 115109909A CN 202210621682 A CN202210621682 A CN 202210621682A CN 115109909 A CN115109909 A CN 115109909A
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 99
- 239000011777 magnesium Substances 0.000 title claims abstract description 99
- 239000000463 material Substances 0.000 title claims abstract description 31
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 32
- 238000001125 extrusion Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007711 solidification Methods 0.000 claims abstract description 14
- 230000008023 solidification Effects 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 230000007646 directional migration Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 3
- 238000005292 vacuum distillation Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 238000004949 mass spectrometry Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/04—Metals or alloys
- A61L27/047—Other specific metals or alloys not covered by A61L27/042 - A61L27/045 or A61L27/06
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention belongs to the field of preparation of high-purity magnesium plates, and discloses a preparation method of a biomedical high-purity magnesium bone plate material. The preparation method comprises the following steps: purifying the metal magnesium melt through sequential solidification treatment to obtain a high-purity magnesium round ingot; carrying out deformation extrusion treatment on the high-purity magnesium round ingot to obtain a high-purity magnesium square bar; and (4) rolling the high-purity magnesium square bar to obtain the high-purity magnesium plate. The method improves the purity of the magnesium metal by utilizing the directional migration and impurity removal of the solid-liquid interface, realizes the processing and forming of the high-purity magnesium plate by utilizing the large-deformation extrusion compounding and multi-pass rolling, and improves the mechanical property of the high-purity magnesium plate, thereby obtaining the high-strength and high-purity magnesium plate and meeting the requirements of biomedical bone plate materials.
Description
Technical Field
The invention belongs to the field of preparation of high-purity magnesium plates, and particularly relates to a preparation method of a biomedical high-purity magnesium bone plate material.
Background
The high-purity magnesium has remarkable advantages as biomedical metal materials, such as good biodegradability, biocompatibility, elastic modulus close to that of human bones and the like, and has extremely wide application prospects in the field of biodegradable implant device preparation, so that the high-purity magnesium is increasingly and widely concerned.
Due to the great advantages and potential market prospects of biomedical high-purity magnesium, related scientific research investment is rapidly increased in all countries in recent years, the high land of biomedical high-purity magnesium technology is seized, and the advantages of intellectual property initiatives are obtained.
The problems existing in the prior biomedical high-purity magnesium material mainly comprise two aspects: firstly, due to the lack of a reasonable purification process at present, the purity of the material is not high enough (the highest purity of the prior art is 99.99%), the variety and content change of impurity elements are large, the mechanical property and the biodegradation property of a final product are greatly influenced, the consistency of the performance of a high-purity magnesium implanted device is poor, and the requirements of standardized production and application are difficult to meet; secondly, because the high-purity magnesium does not contain alloy elements, solid solution or precipitation strengthening can not be formed, the strength of the high-purity magnesium is often low, and the mechanical property requirement of a biological implantation device is difficult to meet; in addition, the previous research on the rolling of high-purity magnesium is less, and if relevant technicians research the rolling process and mechanical properties of pure magnesium, the purity of the adopted metal magnesium is 99.95%; in addition, most of the studies on high purity magnesium are conducted using round bar samples. In a word, the research of deformation processing and mechanical properties of the high-purity magnesium plate is lacked at present, the processing technology and the mechanical properties of the high-performance high-purity magnesium plate required by the bone plate material are not reported at present, and the shortage of related research not only restricts the development of the preparation technology, but also limits the application and the popularization of the high-purity magnesium in the aspect of the bone plate metal material.
In view of the above problems, a method for preparing a biomedical high-purity magnesium bone plate material is urgently needed.
Disclosure of Invention
The invention aims to solve the problems of high purification difficulty, low mechanical property, insufficient research on a plate forming process and the like of the existing biomedical magnesium metal, and provides a preparation method of a biomedical high-purity magnesium bone plate material. The method improves the purity of the magnesium metal by utilizing the directional migration and impurity removal of the solid-liquid interface, realizes the processing and forming of the high-purity magnesium plate by utilizing the large-deformation extrusion compounding and multi-pass rolling, and improves the mechanical property of the high-purity magnesium plate, thereby obtaining the high-strength and high-purity magnesium plate and meeting the requirements of biomedical bone plate materials.
In order to achieve the above object, the present invention provides a method for preparing a biomedical high-purity magnesium bone plate material, comprising the following steps:
s1: purifying the metal magnesium melt through sequential solidification treatment to obtain a high-purity magnesium round ingot;
s2: carrying out deformation extrusion treatment on the high-purity magnesium round ingot to obtain a high-purity magnesium square bar;
s3: and rolling the high-purity magnesium square bar to obtain the high-purity magnesium plate.
According to the invention, preferably, the magnesium metal melt is placed in a high-purity graphite crucible for sequential solidification treatment, the vacuum degree is 4000-8000 Pa, the melt temperature is 680-780 ℃, and the solid-liquid interface directional migration speed is 1-10 mm/min.
According to the present invention, preferably, the apparatus for performing the sequential solidification process includes a vacuum induction furnace.
In the present invention, as shown in fig. 1, the sequential solidification process preferably includes: placing the magnesium metal melt 2 in a high-purity graphite crucible 1, vacuumizing to 0.1Pa, filling high-purity argon, keeping the pressure in a vacuum induction furnace at 4000-8000 Pa, melting at 680-780 ℃ in a vacuum induction furnace 6, and keeping the temperature for 30 min; and then, slowly pulling down the high-purity graphite crucible 1 containing the metal magnesium melt 2 to separate the high-purity graphite crucible from the induction coil 4 at a pulling-down speed (the directional migration speed of a solid-liquid interface) of 1-10 mm/min, and taking out the high-purity graphite crucible to obtain the high-purity magnesium round ingot after the high-purity graphite crucible completely separates from the induction coil 4 and is cooled to below 50 ℃.
According to the invention, the magnesium metal melt is preferably obtained by melting crystalline dendritic magnesium blocks obtained by vacuum distillation at 680-780 ℃.
According to the present invention, preferably, the purity of the high-purity magnesium round ingot is not less than 99.995%.
According to the invention, preferably, the extrusion temperature of the deformation extrusion treatment is 100-300 ℃, the extrusion speed is 1-10 mm/min, and the extrusion ratio is not lower than 30.
According to the invention, before the deforming and extruding process, turning process is preferably performed on the high-purity magnesium round ingot.
According to the invention, preferably, the turning process comprises: and carrying out 8-12mm removal and 0.8-1.2mm radial thickness removal on the tail end of the high-purity magnesium round ingot in the length direction through sequential solidification treatment.
According to the invention, preferably, the rolling temperature of the rolling processing treatment is 100-300 ℃, the rolling speed is 1-5 m/s, and the rolling pass is not less than 3.
According to the invention, preferably, the thickness of the high-purity magnesium plate is 2-10 mm, the tensile strength at room temperature is not lower than 170MPa, and the elongation is not lower than 8%. In the present invention, the room temperature is 20 to 30 ℃.
The technical scheme of the invention has the following beneficial effects:
1. the invention adopts a solid-liquid interface directional migration (sequential solidification) purification method, has high purification efficiency, can realize the preparation of kilogram-grade high-purity magnesium ingots, has the purity of high-purity magnesium not less than 99.995 percent after purification treatment, and can meet the purity requirement of biomedical bone plate materials.
2. According to the invention, the high-performance bar stock is prepared by one-step extrusion through deformation processing with a large extrusion ratio not lower than 30, so that the material is provided for multi-pass rolling processing.
3. The method adopts multi-pass rolling, the rolling temperature is 100-300 ℃, the rolling speed is 1-5 m/s, the rolling pass is not less than 3, the method can be realized on conventional rolling equipment, the high-purity magnesium plate with the thickness of 2-10 mm can be prepared, and the requirement of manufacturing the thickness of the biomedical bone plate is met.
4. After the high-purity magnesium plate is subjected to large deformation extrusion and multi-pass rolling, the tensile strength at room temperature of the high-purity magnesium plate is not lower than 170MPa, the elongation is not lower than 8%, and the strength requirement for manufacturing the biomedical bone plate can be met.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic diagram of sequential solidification purification of step S1 of the method for preparing a biomedical high-purity magnesium bone plate material according to the present invention.
Fig. 2(a) - (b) show the cut pictures (not turned) of the high purity magnesium round ingot obtained by the sequential solidification purification of step S1 of the method for preparing the biomedical high purity magnesium bone plate material provided by the present invention.
The reference numerals are illustrated below:
1-high-purity graphite crucible, 2-metal magnesium melt, 3-heat-preservation cylinder, 4-induction coil, 5-water-cooled copper base, 6-vacuum induction furnace and 7-furnace base.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The magnesium metal melts used in examples 1 and 2 below were obtained by melting crystalline dendritic magnesium ingots by vacuum distillation.
Example 1
The embodiment provides a preparation method of a biomedical high-purity magnesium bone plate material, as shown in fig. 1, the preparation method includes the following steps:
s1: placing the magnesium metal melt 2 in a high-purity graphite crucible 1, vacuumizing to 0.1Pa, introducing high-purity argon, keeping the pressure of 5000Pa in a vacuum induction furnace 6, melting at 750 ℃ in the vacuum induction furnace 6, and keeping the temperature for 30 min; then, slowly pulling down the high-purity graphite crucible 1 containing the metal magnesium melt 2 to separate the high-purity graphite crucible from the induction coil 4, wherein the pulling-down speed (the directional migration speed of a solid-liquid interface) is 5mm/min, and taking out the high-purity graphite crucible 1 to obtain a high-purity magnesium round ingot (shown in figures 2(a) - (b)) after the high-purity graphite crucible 1 completely separates from the induction coil 4 and is cooled to below 50 ℃, wherein the turning treatment comprises the following steps: performing 10mm removal and 1mm radial thickness removal on the tail end of the sequential solidification treatment on the high-purity magnesium round ingot in the length direction to obtain a high-purity magnesium round ingot with the diameter of 80mm and the height of 220 mm;
s2: extruding the high-purity magnesium round ingot in an 800T horizontal extruder (the inner diameter of an extrusion cylinder is 125mm), wherein the extrusion temperature is 200 ℃, the extrusion speed is 1mm/min, the extrusion ratio is 30, and a high-purity magnesium square bar with the cross section of 20mm multiplied by 20mm is prepared;
s3: rolling the high-purity magnesium square bar on a 450T rolling mill, preheating for 30min at 300 ℃, and then performing 3-pass rolling at a rolling speed of 1.5m/s to obtain a 7.8mm high-purity magnesium plate, wherein the 3-pass plate thickness change is 20.0 → 16.2 → 12.1 → 7.8.
After rolling is finished, preparing a flaky tensile sample for room-temperature tensile test, and preparing magnesium chips for chemical component ICP-MS mass spectrometry. The purity of the high-purity magnesium plate obtained in the embodiment is 99.996%, the tensile strength in the rolling direction is 176.7MPa, and the elongation is 10.0%.
Example 2
The present embodiment provides a method for preparing a biomedical high-purity magnesium bone plate material, and the difference between the present embodiment and embodiment 1 is only that:
melting at 720 deg.C in vacuum induction furnace 6, and maintaining the temperature for 30 min;
slowly pulling down the high-purity graphite crucible 1 containing the metal magnesium melt 2 to separate the high-purity graphite crucible from the induction coil 4, wherein the pulling-down speed (the directional migration speed of a solid-liquid interface) is 4 mm/min;
the extrusion temperature is 240 ℃;
the high-purity magnesium plate material with the thickness of 2.0mm is obtained by 5 passes of rolling at the rolling speed of 1.5m/s, and the thickness change of the 5 passes of the high-purity magnesium plate material is 20.0 → 16.2 → 12.1 → 7.8 → 4.0 → 2.0.
After rolling is finished, preparing a flaky tensile sample for room-temperature tensile test, and preparing magnesium chips for chemical component ICP-MS mass spectrometry. The purity of the high-purity magnesium plate obtained in the example was 99.996%, the tensile strength in the rolling direction was 189.9MPa, and the elongation was 13.3%.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A preparation method of a biomedical high-purity magnesium bone plate material is characterized by comprising the following steps:
s1: purifying the metal magnesium melt through sequential solidification treatment to obtain a high-purity magnesium round ingot;
s2: carrying out deformation extrusion treatment on the high-purity magnesium round ingot to obtain a high-purity magnesium square bar;
s3: and rolling the high-purity magnesium square bar to obtain the high-purity magnesium plate.
2. The preparation method of the biomedical high-purity magnesium bone plate material according to claim 1, wherein the metal magnesium melt is placed in a high-purity graphite crucible for sequential solidification treatment, the vacuum degree is 4000-8000 Pa, the melt temperature is 680-780 ℃, and the solid-liquid interface directional migration speed is 1-10 mm/min.
3. The method for preparing a biomedical high-purity magnesium bone plate material according to claim 2, wherein the equipment for performing the sequential solidification treatment comprises a vacuum induction furnace.
4. The method for preparing biomedical high-purity magnesium bone plate material according to claim 1, wherein the magnesium metal melt is obtained by melting a vacuum distillation crystalline magnesium block at 680-780 ℃.
5. The method for preparing a biomedical high-purity magnesium bone plate material according to claim 1, wherein the purity of the high-purity magnesium round ingot is not less than 99.995%.
6. The method for preparing a biomedical high-purity magnesium bone plate material according to claim 1, wherein the extrusion temperature of the deformation extrusion treatment is 100-300 ℃, the extrusion speed is 1-10 mm/min, and the extrusion ratio is not lower than 30.
7. The method for preparing a biomedical high-purity magnesium bone plate material according to claim 1, wherein the step of turning the high-purity magnesium round ingot is further included before the deformation extrusion treatment.
8. The preparation method of the biomedical high-purity magnesium bone plate material according to claim 7, wherein the turning process comprises the following steps: and removing 8-12mm of the tail end of the high-purity magnesium round ingot in the length direction through sequential solidification treatment and removing 0.8-1.2mm of the radial thickness of the high-purity magnesium round ingot.
9. The preparation method of the biomedical high-purity magnesium bone plate material according to claim 1, wherein the rolling temperature of the rolling processing treatment is 100-300 ℃, the rolling speed is 1-5 m/s, and the number of rolling passes is not less than 3.
10. The preparation method of the biomedical high-purity magnesium bone plate material according to claim 1, wherein the high-purity magnesium plate material has a thickness of 2-10 mm, a room-temperature tensile strength of not less than 170MPa, and an elongation of not less than 8%.
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CN112337972A (en) * | 2019-08-07 | 2021-02-09 | 鹤壁恒镁新材料科技有限公司 | Method for preparing high-performance magnesium alloy through secondary deformation |
CN113444888A (en) * | 2021-06-29 | 2021-09-28 | 重庆大学 | Method for purifying magnesium melt by adopting directional solidification |
CN114318188A (en) * | 2021-12-08 | 2022-04-12 | 中国科学院金属研究所 | High-strength corrosion-resistant degradable high-purity magnesium wire and preparation method thereof |
CN114318187A (en) * | 2021-12-08 | 2022-04-12 | 中国科学院金属研究所 | Biomedical high-purity high-strength corrosion-resistant Mg-Zn-Mn magnesium alloy wire and preparation method thereof |
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Patent Citations (8)
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CN101798651A (en) * | 2010-04-06 | 2010-08-11 | 重庆大学 | High-performance wrought magnesium alloy material |
CN101886201A (en) * | 2010-07-27 | 2010-11-17 | 上海交通大学 | Deformed magnesium-based alloy bar pipe plate and preparation method thereof |
CN106807907A (en) * | 2016-12-23 | 2017-06-09 | 李蔚晶 | The cold crucible vacuum induction melting device for directionally solidifying of low radial symmetry gradient |
CN112337972A (en) * | 2019-08-07 | 2021-02-09 | 鹤壁恒镁新材料科技有限公司 | Method for preparing high-performance magnesium alloy through secondary deformation |
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CN113444888A (en) * | 2021-06-29 | 2021-09-28 | 重庆大学 | Method for purifying magnesium melt by adopting directional solidification |
CN114318188A (en) * | 2021-12-08 | 2022-04-12 | 中国科学院金属研究所 | High-strength corrosion-resistant degradable high-purity magnesium wire and preparation method thereof |
CN114318187A (en) * | 2021-12-08 | 2022-04-12 | 中国科学院金属研究所 | Biomedical high-purity high-strength corrosion-resistant Mg-Zn-Mn magnesium alloy wire and preparation method thereof |
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