CN104862566A - High-strength high-plasticity medical magnesium alloy, and preparation method and applications thereof - Google Patents
High-strength high-plasticity medical magnesium alloy, and preparation method and applications thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C23/00—Alloys based on magnesium
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- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
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- 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
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Abstract
The invention discloses a high-strength high-plasticity medical magnesium alloy, and a preparation method and applications thereof, and belongs to the technical field of medical magnesium alloy material. According to the preparation method, compound addition of Zn, Nd, and Mn as alloy elements into magnesium matrix is carried out, and magnesium alloy is subjected to extrusion, so that plastic deformation capacity of magnesium alloy is improved greatly, and tensile strength of magnesium alloy is increased greatly by increasing Zn content of the magnesium alloy. The high-strength high-plasticity medical magnesium alloy comprises, by mass, 0.2 to 6.0% of Zn, 0.5 to 2.0% of Nd, and 0.5% of Mn; weight content of limited impurities is controlled as following: Fe<0.006%, Cu<0.005%, Ni<0.006%, and the balance Mg. An alloy ingot casting is subjected to homogenization treatment at 400 to 550 DEG C for 10h, and is subjected to extrusion at 390 DEG C, wherein extrusion ratio is controlled to be 36:1, and animal oil is taken as a lubricant. Maximum room temperature tensile strength of the high-strength high-plasticity medical magnesium alloy can be 300MPa, and maximum elongation percentage can be 37%.
Description
Technical field
The present invention relates to technical field of magnesium alloy material, be specifically related to a kind of High-strength high-plasticity medical magnesium alloy and preparation technology thereof and application, this magnesium alloy is used as degradable metal embedded material.
Background technology
In recent years, magnesium alloy, as degradable biological medical material of new generation, has become the advanced subject of biomaterial research.Compared with traditional inert metal embedded material (as stainless steel, cochrome, titanium alloy etc.), magnesium alloy can be degradable after patient treatment rehabilitation, do not need second operation to take out, and decreases misery and the expense of patient.Magnesium alloy has the good mechanical property and processing characteristics that metallic substance possesses, and magnesium is the necessary trace element of a kind of human body simultaneously, and participate in multiple physical body physiological activity, therefore magnesium shows excellent biocompatibility.A lot of result of study shows, magnesium alloy also has multiple biological functional effect.Therefore magnesium alloy is with the over-all properties of its excellence, is expected to become desirable degradable metal embedded material.
Along with magnesium alloy is as the continuous expansion in biomaterial research Application Areas, also more and more higher to the performance requriements of magnesium alloy each side, more and more diversified.Such as, magnesium alloy is as degradable angiocarpy bracket material, and support in use will experience larger viscous deformation, in military service process in vivo, support needs the blood vessel to there is pathology narrow positions to provide lasting enough anchorage forces, and this just requires that magnesium alloy must have enough intensity; As degradable suture material, suture line knotting process in use also requires that magnesium alloy must possess excellent plastic deformation ability, and suture line also must possess higher intensity simultaneously, provides enough tensional fixation wounds to wound; When magnesium alloy uses as degradable bone peg, hone lamella or filling material of bone, also higher to the requirement of strength of magnesium alloy.But Patterns for Close-Packed Hexagonal Crystal structure makes the plastic deformation performance of magnesium alloy very limited, and intensity is lower, must by rational Alloying Design and heat treating regime, and the mode such as the complete processing optimized goes the plastic deformation ability and the intensity that improve magnesium alloy.
Summary of the invention
The object of the present invention is to provide a kind of High-strength high-plasticity medical magnesium alloy and preparation technology thereof and application, the existing good plastic deformation ability of this alloy, has again higher intensity, and nontoxicity.
Technical scheme of the present invention is:
A kind of High-strength high-plasticity medical magnesium alloy, by weight percentage, its chemical composition is: Zn0.2-6.0%, Mn0.15-0.5%(is preferably 0.5%), Nd0.5-2.0%, restriction impurity content is: Fe < 0.006%, Cu < 0.005%, Ni < 0.006%, all the other are Mg.
The preparation technology of alloy of the present invention comprises the steps:
(1) homogenize process: magnesium alloy ingot is carried out in 400 ~ 550 DEG C the thermal treatment 10 hours that homogenizes in vacuum heat treatment furnace, thus make composition and the microstructure homogenization of ingot casting, then water-cooled, forms supersaturated solid solution;
(2) extrusion process: before extruding, ingot casting is in 390 DEG C of preheatings 2 hours in stove, and then 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, thus obtain described medical magnesium alloy.
Described in above-mentioned steps (1), the preparation process of magnesium alloy ingot is as follows:
A () is prepared burden: for different Composition Designs, first prepare burden, batching comprises the Mg ingot that purity is 99.99%, and purity is the Zn ingot of 99.99%, and purity is the Mg-30Nd master alloy of 99.99%, electrolysis Mn powder;
(b) alloy melting and casting: in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C; After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even; In alloy melting process, continue to pass into protective gas; Be cooled to 700 DEG C of standing 15-30 minute, make inclusion sedimentation, then skim top layer scum silica frost, be poured in graphite jig, graphite jig is hydraucone slightly, prevents the appearance of larger shrinkage cavity, finally obtains the medical magnesium alloy ingot casting of high cleanliness.
This medical magnesium alloy is used as degradable metal embedded material, as degradable angiocarpy bracket material, degradable suture material, degradable bone peg, hone lamella or filling material of bone etc.
Magnesium alloy principle of design of the present invention is as follows:
The present invention relates to a kind of novel High-strength high-plasticity wrought magnesium alloys containing Zn, Mn and rare earth element nd, is metallic element Zn, Mn and rare earth element nd added in magnesium as alloying element to be formed.Zn element has higher solubleness in magnesium matrix, has obvious solution strengthening effect, can significantly improve the intensity of material; Adding of a small amount of Mn element contributes to eliminating the impact of impurity F e on corrosion stability of magnesium alloy energy; Nd element on the one hand can refinement wrought magnesium alloys recrystal grain, and can also weaken wrought magnesium alloys texture intensity.By the acting in conjunction of Zn, Mn, Nd tri-kinds of alloying elements, the intensity of magnesium alloy and plasticity and corrosion resisting property thereof can be improved.By as-cast magnesium alloy 400 ~ 550 DEG C of Homogenization Treatments 10 hours, then water-cooled, obtains the magnesium alloy extrusion blank of composition and homogeneous microstructure.Before extruding, magnesium alloy was in 390 DEG C of preheatings 2 hours, extrusion temperature 380 DEG C, extrusion ratio 36:1, extruding velocity of discharge 4m/min, obtain the magnesium alloy rod of diameter 10mm, its existing high viscous deformation performance and very high tensile strength, also have extraordinary corrosion resistance nature.
Beneficial effect of the present invention is as follows:
1, the present invention adds Zn, Nd, Mn as alloying element by compound in magnesium matrix, and extrusion processing is carried out to magnesium alloy, the plastic deformation ability of magnesium alloy is significantly improved, and by improving the content of Zn element in alloy, the tensile strength of magnesium alloy is greatly improved.
2, the novel High-strength high-plasticity wrought magnesium alloys containing Zn, Mn and rare earth element nd prepared of the present invention, its bar room temperature tensile intensity can reach 300MPa, and tension set can reach 37%.
3, magnesium alloy of the present invention is as degradable angiocarpy bracket material, support in use can bear large viscous deformation, in military service process in vivo, magnesium alloy bracket has enough intensity provides lasting enough anchorage forces to the blood vessel that pathology narrow positions occurs; When it is as degradable suture material, the excellent plastic deformation ability of magnesium alloy meets the requirement of suture line in knotting process, and suture line also possesses higher intensity simultaneously, provides enough tensional fixation wounds to wound; The intensity of this magnesium alloy makes it meet as requirement of strength when degradable bone peg, hone lamella or filling material of bone.
Embodiment
Below with reference to embodiment, the invention will be further described.
Embodiment 1:
The Composition Design (weight percent) of magnesium alloy is: 0.2Zn, 0.5Mn, 2.0Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 200MPa, and tension set reaches 37%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.09mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 82%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 2:
The Composition Design (weight percent) of alloy is: 1.0Zn, 0.5Mn, 2.0Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After alloy all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 225MPa, and tension set reaches 33%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.15mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 83%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 3:
The Composition Design (weight percent) of alloy is: 2.0Zn, 0.5Mn, 2.0Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After alloy all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity 240MPa of this alloy, tension set reaches 35%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes, soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy was 0.21mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 82%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 4:
The Composition Design (weight percent) of magnesium alloy is: 4.0Zn, 0.5Mn, 2.0Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 260MPa, and tension set reaches 30%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.25mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 84%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 5:
The Composition Design (weight percent) of magnesium alloy is: 2Zn, 0.5Mn, 0.5Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 230MPa, and tension set reaches 25%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.06mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 88%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 6:
The Composition Design (weight percent) of magnesium alloy is: 4.0Zn, 0.5Mn, 0.5Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 270MPa, and tension set reaches 23%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.12mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 86%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Embodiment 7:
The Composition Design (weight percent) of magnesium alloy is: 6.0Zn, 0.5Mn, 0.5Nd, the weight percent Fe < 0.006% of restriction impurity element, Cu < 0.005%, Ni < 0.006%, all the other are Mg.By mentioned component alloyage, in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C.After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even, continue to add shielding gas protection simultaneously.Cool to 700 DEG C static 20 minutes, make inclusion sedimentation, skim melt top layer scum silica frost, be then cast into ingot casting, with the cylindrical press blank of lathe by further for ingot casting cutting diameter 60mm, length 150mm.Extrusion billet is placed in vacuum heat treatment furnace at 500 DEG C and carries out the process that homogenizes, water-cooled, then 390 DEG C of preheatings 2 hours, 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, adopt animal oil as lubricating oil, obtaining diameter is the magnesium alloy rod of 10mm.Intercept the standard tensile specimen that part bar is processed as M10 Φ 5, three Duplicate Samples, test the mechanical property of material.The room temperature tensile intensity of this alloy is 300MPa, and tension set reaches 20%.
Prepare wrought magnesium alloys immersion test sample by Linear cut, sample diameter 10mm, thickness 3mm, with 2000# sand paper, sample surfaces is milled to light, in Hank ' s solution, carry out immersion test, soak ratio 1.25ml/cm
2, change Hank ' s solution every day, through the immersion test of 3 weeks, the sample surfaces after utilizing the chromic acid solution ultrasonic cleaning of 200g/L to soak 3 minutes.Soak front and back example weight change by comparing, the erosion rate calculating magnesium alloy is 0.35mm/year.Cell toxicity test shows in addition, the survival rate of experimental cell L929 to 81%, higher than the cytotoxicity primary standard of 75%, illustrative material nontoxicity.
Claims (9)
1. a High-strength high-plasticity medical magnesium alloy, it is characterized in that: by weight percentage, this magnesium alloy chemical composition is: Zn0.2-6.0%, Nd0.5-2.0%, Mn0.5%, restriction impurity content is: Fe < 0.006%, Cu < 0.005%, Ni < 0.006%, all the other are Mg.
2. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 1, is characterized in that: by weight percentage, and in this magnesium alloy, Mn content is 0.5%.
3. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 1, is characterized in that: this technique comprises the steps:
(1) homogenize process: magnesium alloy ingot is carried out in 400 ~ 550 DEG C the thermal treatment 10 hours that homogenizes in vacuum heat treatment furnace, thus make composition and the microstructure homogenization of ingot casting, then water-cooled, forms supersaturated solid solution;
(2) extrusion process: extrude front ingot casting in 390 DEG C of preheatings 2 hours in stove, then 380 DEG C of extruding, extrusion ratio 36:1, extrusion speed 4m/min, thus obtain described medical magnesium alloy.
4. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 3, is characterized in that: in step (2) extrusion process process, adopts animal oil as lubricating oil.
5. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 3, is characterized in that: described in step (1), the preparation process of magnesium alloy ingot is as follows:
A () is prepared burden: for required Composition Design, first prepare burden, batching comprises the Mg ingot that purity is 99.99%, and purity is the Zn ingot of 99.99%, and purity is the Mg-30Nd master alloy of 99.99%, electrolysis Mn powder;
(b) alloy melting and casting: in smelting furnace, add the Mg ingot of preheating, Zn ingot, electrolysis Mn powder, alloy melting temp is 700 DEG C; After each composition all melts, add Mg-30Nd master alloy, temperature is increased to 720 DEG C and continues melting 30 minutes, stir therebetween and make for twice melt even; Be cooled to 700 DEG C of standing 15-30 minute, make inclusion sedimentation, then skim top layer scum silica frost, be poured in graphite jig, obtain the medical magnesium alloy ingot casting of high cleanliness.
6. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 5, is characterized in that: in alloy melting process, continues to pass into protective gas.
7. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 5, is characterized in that: described graphite jig slightly hydraucone, prevents the appearance of larger shrinkage cavity.
8. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 1, is characterized in that: this magnesium alloy is used as degradable metal embedded material.
9. the preparation technology of High-strength high-plasticity medical magnesium alloy according to claim 8, is characterized in that: this magnesium alloy is used as degradable angiocarpy bracket material, degradable suture material, degradable bone peg, hone lamella or filling material of bone etc.
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| PCT/CN2014/073574 WO2015123902A1 (en) | 2014-02-21 | 2014-03-18 | High strength and high plasticity medical magnesium alloy, preparation method therefor and application thereof |
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| CN105238976A (en) * | 2015-09-25 | 2016-01-13 | 苏州蔻美新材料有限公司 | Medical magnesium base alloy material and preparation method thereof |
| CN106756365A (en) * | 2015-11-24 | 2017-05-31 | 中国科学院金属研究所 | A kind of inexpensive high-speed extrusion magnesium alloy materials and its preparation technology |
| CN106756365B (en) * | 2015-11-24 | 2019-02-15 | 中国科学院金属研究所 | A kind of low cost high-speed extrusion magnesium alloy materials and its preparation process |
| CN107058838A (en) * | 2017-06-13 | 2017-08-18 | 济南大学 | A kind of mechanism during warm deformation Biological magnesium alloy and preparation method thereof |
| CN107043880A (en) * | 2017-06-27 | 2017-08-15 | 佛山科学技术学院 | A kind of rare earth heat conductive magnesium alloy and preparation method thereof |
| CN108950335A (en) * | 2018-06-19 | 2018-12-07 | 北京科技大学 | A kind of raising casting ZK21 magnesium alloy strength and corrosion proof method |
| WO2020062874A1 (en) * | 2018-09-29 | 2020-04-02 | 江苏中科亚美新材料股份有限公司 | High-thermal conductivity high-strength magnesium alloy material and preparation method therefor |
| CN111434791A (en) * | 2019-07-04 | 2020-07-21 | 四川镁合医疗器械有限责任公司 | Magnesium alloy anastomosis nail with precisely controlled performance and preparation method thereof |
| CN111686299A (en) * | 2020-07-08 | 2020-09-22 | 东莞理工学院 | Medical magnesium alloy and preparation method and application thereof |
| CN116078848A (en) * | 2023-03-06 | 2023-05-09 | 兰州理工大学 | Preparation method of room-temperature ultrahigh-plasticity high-strength magnesium alloy |
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| WO2015123902A1 (en) | 2015-08-27 |
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