CN109913723A - The gradient porous magnesium alloy materials and die casting equipment of bone defect healing - Google Patents
The gradient porous magnesium alloy materials and die casting equipment of bone defect healing Download PDFInfo
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- CN109913723A CN109913723A CN201910276318.5A CN201910276318A CN109913723A CN 109913723 A CN109913723 A CN 109913723A CN 201910276318 A CN201910276318 A CN 201910276318A CN 109913723 A CN109913723 A CN 109913723A
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Abstract
The gradient porous magnesium alloy materials of bone defect healing, consist of the following mass percentage components: Zr 0.8-1.9%, Ca 1.2-4.8%, C 4.1-7.7%, Al 1.6-2.3%, Zn 5.7-8.2%, Fe 5.4-9%, surplus Mg.Magnesium alloy materials provided by the invention pass through the hole in magnesium alloy materials, make magnesium alloy materials repairing bone defect position that there is some strength, body fluid enters in hole, heals with bone tissue, magnesium alloy is slowly degraded, while side opposite with bone face outside magnesium alloy materials coats Al2O3Prevent magnesium alloy materials from excessively wearing with bone face.
Description
Technical field
The present invention relates to the field of medical instrument technology, the in particular to gradient porous magnesium alloy materials of bone defect healing.
Background technique
For the surgical implantation material of human body hard tissue reparation or replacement, be clinically widely used demand.Have
Good biocompatibility, degradable absorbable magnesium alloy in vivo are the hot spots of Recent study.In biomaterial and Medical treatment device
In tool, most promising is the reparation of the sclerous tissues such as bone, tooth and joint and alternate material.Main cause is: magnesium has
Good biocompatibility degradable can be not required to second operation, the density of magnesium alloy and people's bone and be not much different, elasticity modulus with
The advantages that bone is close avoids stress-shielding effect.
Current magnesium alloy materials in the production process, since magnesium and magnesium alloy chemical property are more active, be easy and its
He occurs chemical reaction and is denaturalized substance.
Summary of the invention
The present invention provides a kind of gradient porous magnesium alloy materials of bone defect healing, is making to solve magnesium alloy materials
The defect of denaturation is easy to happen during making.
In order to overcome the defect of above-mentioned background technique, the present invention provides the gradient porous magnesium alloy materials of bone defect healing
Material, consists of the following mass percentage components: Zr 0.8-1.9%, Ca 1.2-4.8%, C 4.1-7.7%, Al 1.6-
2.3%, Zn 5.7-8.2%, Fe 5.4-9%, surplus Mg；It include several holes, magnesium alloy materials inside magnesium alloy materials
The external side opposite with bone face coats Al2O3。
In order to promote human body cell to grow in magnesium alloy materials, preferred technical solution is that hole is divided into main aperture and pair
Hole, the aperture of main aperture are 100-800 microns, and the aperture of secondary orifices is 10-80 microns.
In order to prepare porous magnesium alloy material, the present invention provides a kind of preparation method of gradient porous magnesium alloy materials,
Include the following steps:
Step S1: Mg-Ca, Mg-Zn powder and NaHCO are taken3Mixing, obtains mixture, and Mg-Ca content of powder is 4.8%-
12%, Mg-Zn content of powder are 80%-85%, NaHCO3Content be 3%-15.2%；
Step S2: the resulting mixture of step S1 is put into ball mill and is passed through inert atmosphere protection progress ball milling, ball milling
Time 8-10h；
Step S3: charging suppress hole least part with first pressure first, and first pressure has been suppressed mixed to what is suppressed
It closes object to be heated, then charges and hole Intermediate part is suppressed with second pressure, second pressure has suppressed the mixing to suppressing
Object is heated, and is finally charged and is suppressed hole Intermediate part with third pressure, and third pressure has been suppressed to the mixture suppressed
It is heated, first pressure, second pressure, the size of third pressure are gradually reduced；
Step S4: the precast body that step S3 is suppressed carries out vacuum-sintering, and temperature is controlled at 600-680 DEG C, obtains ladder
Spend porous magnesium alloy material.
In order to improve the toughness of magnesium alloy materials, preferred technical solution be further include following steps:
Step S5: the magnesium alloy materials sintered are put into carburizer, are then evacuated down to 10-4Pa；
Step S6: carburizing gas is passed through by the first catalysing tube, the mass ratio of the first energizer composition is lanthanum carbonate: oxidation
Cerium: calcium carbonate: ethyl alcohol=(4-5.5): (1-1.5): (5-7): (11-14), the first energizer are attached on magnesium alloy materials, add
Heat keeps the temperature 4-5h to 420-560 DEG C；
Step S7: carburizing gas is passed through by the first catalysing tube, the mass ratio of the second energizer composition is lanthanum carbonate: carbonic acid
Calcium: ethyl alcohol=(2-4.5): (3-5): (11-14), the second energizer are attached on magnesium alloy materials, are cooled to 320-360 DEG C,
Keep the temperature 6-7h；
Step S8: finally by carburizing stove evacuation, it is filled with inert atmosphere protection, keeps the temperature 18h.
In order to improve the wearability of magnesium alloy materials exterior lateral sides, preferred technical solution be further include following steps:
Step S9: being ethyl alcohol: epoxy resin: marzacotto: silicon powder: silicon carbide: silica=(16- by mass ratio
18): (8-10): (4-8): (40-65): the component of (15-20) is mixed；
S10: the side that magnesium alloy materials made from step S8 correspond to bone face is immersed in mixture made from step S9, is filled
Tap touching 2min；
S11: the step S10 magnesium alloy materials for being stained with mixture made from S9 are put into sintering furnace, 700-800 is warming up to
DEG C, firing time 70-90min.
In order to prepare above-mentioned porous magnesium alloy material, the present invention provides one kind for manufacturing gradient porous magnesium alloy materials
Die casting equipment, including substrate, die casting chamber and die cast plate, die casting top of chamber is fixedly connected with substrate, and blowing is arranged in die casting chamber side
Door, die casting intracavitary setting die cast plate are fixedly installed hydraulic stem on substrate, are fixedly connected among hydraulic stem and die cast plate.
In order to keep die cast plate sliding more stable, preferred technical solution is side of the intracavitary portion of die casting towards hydraulic stem one end
Guide pad is fixedly installed in wall quadrangle, and vertically the first guide rod of fixed setting, the first guide rod pass through outwardly for die cast plate quadrangle
Guide pad, the first guide rod can slide in guide pad.
Be thermally formed porous while in order to magnesium alloy materials die casting, preferred technical solution is, outside die casting chamber
Side is arranged cartridge heater, and heating plate is fixedly installed in cartridge heater inner wall, and four sidelines in outer the first guide rod of the lateral edge direction of die casting chamber are set
Slide bar is set, slide bar both ends are fixedly connected with die casting chamber, and sliding block is arranged in the side of corresponding slide bar on the outside of cartridge heater, and slide bar, which passes through, to be slided
Block, sliding block can slide on slide bar.
In order to be more convenient to adjust the heating location of cartridge heater, preferred technical solution is that cartridge heater is close to hydraulic stem one end
The corresponding first guide rod position in quadrangle by bearing the second guide rod of fixed setting, bearing outer ring is fixedly connected with cartridge heater,
Bearing inner race is fixedly connected with the second guide rod, and the second guide rod is parallel with the first guide rod and extends towards hydraulic stem direction, the
Linked block is set on two guide rods, and linked block is connected through a screw thread with the second guide rod, the end of linked block and the first guide rod
It is fixedly connected；First gear, the corresponding second guide rod position of cartridge heater is fixedly installed close to one end of cartridge heater in second guide rod
Driving motor is fixedly installed, the output end of driving motor is fixedly connected with second gear, and second gear is engaged with first gear.
More stable in order to cooperate emptying door and die casting chamber, preferred technical solution is the side in die casting cavity length direction
Upper end is uniformly arranged several pedestals, and locking level is hingedly arranged on each pedestal, may be stuck on emptying door, lock after locking level rotation
Drive rod is arranged close to the outside of pedestal one end in fixed pole, and die casting chamber side wall corresponds to drive rod bottom end setting telescopic rod, drive rod bottom
End setting strip hole, the telescopic end and strip hole of telescopic rod are hinged；The side of locking level top towards emptying door center position is set
Location hole is set, locating ring is arranged in emptying door top, and locating ring lateral surface corresponds to position of positioning hole setting locating rod, when locking level card
After on cover, locating rod is inserted into location hole.
The invention has the benefit that
Magnesium alloy materials provided by the invention make magnesium alloy materials repairing bone defect portion by the hole in magnesium alloy materials
Position has some strength, and body fluid enters in hole, heals with bone tissue, and magnesium alloy is slowly degraded, while outside magnesium alloy materials
The portion side opposite with bone face coats Al2O3Prevent magnesium alloy materials from excessively wearing with bone face.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is magnesium alloy materials structural schematic diagram of the present invention；
Fig. 2 is one of the structural schematic diagram of die casting equipment of the present invention；
Fig. 3 is the second structural representation of die casting equipment of the present invention；
Fig. 4 is the side structure schematic diagram of die casting equipment of the present invention；
Fig. 5 is the structural schematic diagram of emptying door and die casting chamber in die casting equipment of the present invention；
Fig. 6 is the overall structure diagram figure of another embodiment of die casting equipment of the present invention；
Fig. 7 is the cross-sectional view of seismic mass in another embodiment of die casting equipment of the present invention；
Fig. 8 is the cross-sectional view of air bag in another embodiment of die casting equipment of the present invention；
Wherein, 10- die casting chamber；11- substrate；12- die cast plate；13- hydraulic stem；14- guide pad；The first guide rod of 141-；
15- cartridge heater；151- heating plate；16- slide bar；161- sliding block；The second guide rod of 17-；171- linked block；172- first gear；
18- driving motor；20- pedestal；21- locking level；22- drive rod；23- telescopic rod；24- strip hole；25- location hole；26- positioning
Circle；27- locating rod；31- sliding through hole；32- seismic mass；33- bracket；34- air bag；35- air dispelling hole；36- air inlet；37- high
It calms the anger tank；38- floor.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, the present invention provides the gradient porous magnesium alloy materials of bone defect healing, by following quality percentage
The group of ratio is grouped as: Zr 0.8-1.9%, Ca 1.2-4.8%, C 4.1-7.7%, Al 1.6-2.3%, Zn 5.7-8.2%,
Fe 5.4-9%, surplus Mg；It include several holes, the magnesium alloy materials outside side opposite with bone face inside magnesium alloy materials
Coat Al2O3。
Magnesium alloy materials provided by the invention make magnesium alloy materials repairing bone defect portion by the hole in magnesium alloy materials
Position has some strength, and body fluid enters in hole, heals with bone tissue, and magnesium alloy is slowly degraded, while outside magnesium alloy materials
The portion side opposite with bone face coats Al2O3Prevent magnesium alloy materials from excessively wearing with bone face, moreover it is possible to control bone uptake range.
In order to promote human body cell to grow in magnesium alloy materials, preferred technical solution is that hole is divided into main aperture and pair
Hole, the aperture of main aperture are 100-800 microns, and the aperture of secondary orifices is 10-80 microns.
The high region degradation of porosity is very fast, and the low region of porosity helps to improve its intensity, reduces body fluid and porous
The contact area of magnesium alloy, degradation speed is slower, to keep the degradation speed of magnesium alloy suitable with bone tissue healing.
In order to prepare porous magnesium alloy material, the present invention provides a kind of preparation method of gradient porous magnesium alloy materials,
Include the following steps:
Step S1: Mg-Ca, Mg-Zn powder and NaHCO are taken3Mixing, obtains mixture, and Mg-Ca content of powder is 4.8%-
12%, Mg-Zn content of powder are 80%-85%, NaHCO3Content be 3%-15.2%；
Step S2: the resulting mixture of step S1 is put into ball mill and is passed through inert atmosphere protection progress ball milling, ball milling
Time 8-10h；
Step S3: charging suppress hole least part with first pressure first, and first pressure has been suppressed mixed to what is suppressed
It closes object to be heated, then charges and hole Intermediate part is suppressed with second pressure, second pressure has suppressed the mixing to suppressing
Object is heated, and is finally charged and is suppressed hole Intermediate part with third pressure, and third pressure has been suppressed to the mixture suppressed
It is heated, first pressure, second pressure, the size of third pressure are gradually reduced；
Step S4: the precast body that step S3 is suppressed carries out vacuum-sintering, and temperature is controlled at 600-680 DEG C, obtains ladder
Spend porous magnesium alloy material.
Above-mentioned technical proposal has the beneficial effect that
In each press casting procedure, as heated, the internal NaHCO of the magnesium alloy materials of secondary pressure3It is heated to resolve into powder
And gas, promote magnesium alloy materials inner pore to be formed, the material for forming hole is able to bear bigger pressure, prevents pressure pair again
The pore size that the magnesium alloy materials of last die cast are formed impacts.
In order to improve the toughness of magnesium alloy materials, preferred technical solution be further include following steps:
Step S5: the magnesium alloy materials sintered are put into carburizer, are then evacuated down to 10-4Pa；
Step S6: carburizing gas is passed through by the first catalysing tube, the mass ratio of the first energizer composition is lanthanum carbonate: oxidation
Cerium: calcium carbonate: ethyl alcohol=(4-5.5): (1-1.5): (5-7): (11-14), the first energizer are attached on magnesium alloy materials, add
Heat keeps the temperature 4-5h to 420-560 DEG C；
Step S7: carburizing gas is passed through by the first catalysing tube, the mass ratio of the second energizer composition is lanthanum carbonate: carbonic acid
Calcium: ethyl alcohol=(2-4.5): (3-5): (11-14), the second energizer are attached on magnesium alloy materials, are cooled to 320-360 DEG C,
Keep the temperature 6-7h；
Step S8: finally by carburizing stove evacuation, it is filled with inert atmosphere protection, keeps the temperature 18h.
Above-mentioned technical proposal has the beneficial effect that
By protruding into carbon into magnesium alloy, the toughness and intensity of magnesium alloy materials entirety are increased, magnesium alloy materials can
Preferably support bone tissue.
In order to improve the wearability of magnesium alloy materials exterior lateral sides, preferred technical solution be further include following steps:
Step S9: being ethyl alcohol: epoxy resin: marzacotto: silicon powder: silicon carbide: silica=(16- by mass ratio
18): (8-10): (4-8): (40-65): the component of (15-20) is mixed；
S10: the side that magnesium alloy materials made from step S8 correspond to bone face is immersed in mixture made from step S9, is filled
Tap touching 2min；
S11: the step S10 magnesium alloy materials for being stained with mixture made from S9 are put into sintering furnace, 700-800 is warming up to
DEG C, firing time 70-90min.
Above-mentioned technical proposal has the beneficial effect that
The side opposite with bone face forms Al outside magnesium alloy materials2O3Film prevents magnesium alloy materials outside and bone face phase
Anti- side is excessively contacted with body fluid, causes magnesium alloy materials degradation speed too fast, while preventing bone growth excessive, Al2O3
Film plays position-limiting action to bone tissue healing, keeps bone tissue healing effect more preferable.
As shown in Fig. 2, it is gradient porous for manufacturing that the present invention provides one kind in order to prepare above-mentioned porous magnesium alloy material
The die casting equipment of magnesium alloy materials, including substrate 11, die casting chamber 10 and die cast plate 12 are fixedly connected with substrate at the top of die casting chamber 10
11, emptying door is arranged in 10 side of die casting chamber, and die cast plate 12 is arranged in die casting chamber 10, hydraulic stem 13, liquid is fixedly installed on substrate 11
It is fixedly connected among compression bar 13 and die cast plate 12.
More stable in order to slide die cast plate 12, preferred technical solution is, towards hydraulic stem 13 1 inside die casting chamber 10
Guide pad 14 is fixedly installed in the side wall quadrangle at end, and the first guide rod 141 is vertically fixedly installed in 12 4 jiaos of die cast plate outwardly, the
One guide rod 141 passes through guide pad 14, and the first guide rod 141 can slide in guide pad 14.
The working principle of above-mentioned technical proposal are as follows:
The magnesium alloy mixture of step S2 is put into die casting chamber 10 by emptying door first, then hydraulic stem 13 is to die casting
It is stretched out in chamber 10, die cast plate 12 is limited by the first guide rod 141 and guide pad 14, mixes die cast plate 12 by magnesium alloy
Object die casting.
Above-mentioned technical proposal has the beneficial effect that
Die cast plate 12 is driven to carry out die casting to the magnesium alloy mixture in die casting chamber 10 by hydraulic stem 13, die cast plate 12 is logical
It crosses the first guide rod 141 and guide pad 14 is limited, form porous magnesium alloy material, keep magnesium alloy materials die casting more flat
Surely.
As shown in Figure 3,4, in order to magnesium alloy materials die casting be thermally formed porous, preferred technical solution while
To be arranged cartridge heater 15,15 both ends open of cartridge heater on the outside of die casting chamber 10, cartridge heater 15 corresponds to the lateral edge of emptying door and adds
Hot cylinder 15 is hinged, 15 inner wall of cartridge heater fixed setting heating plate 151, and the four of outer 141 direction of the first guide rod of lateral edge of die casting chamber 10
Slide bar 16 is arranged in a sideline, and 16 both ends of slide bar are fixedly connected with die casting chamber 10, and the side that slide bar 16 is corresponded on the outside of cartridge heater 15 is set
Sliding block 161 is set, slide bar 16 passes through sliding block 161, and sliding block 161 can slide on slide bar 16.
The working principle of above-mentioned technical proposal are as follows:
In press casting procedure, die casting region is covered by manually adjusting cartridge heater 15, then heating plate 151 is to die casting region
It is heated, promotes the NaHCO in magnesium alloy materials3The gentle body of powder is resolved into, the hole in magnesium alloy materials is promoted to be formed,
When adding magnesium alloy mixture into die casting chamber 10, first by the side opening of the corresponding emptying door of cartridge heater 15, then will put
Bin gate is opened, and is rethought and is added magnesium alloy mixture in die casting chamber 10.
Above-mentioned technical proposal has the beneficial effect that
Die casting region is covered by manually adjusting cartridge heater 15, then heating plate 151 heats die casting region, promotes
NaHCO in magnesium alloy materials3The gentle body of powder is resolved into, promotes the hole in magnesium alloy materials to be formed, makes magnesium alloy materials
Structure is more stable after die casting is crossed, and layering die casting is avoided to impact pore size.
In order to be more convenient to adjust the heating location of cartridge heater 15, preferred technical solution is that cartridge heater 15 is close to hydraulic stem
The second guide rod 17, bearing outer ring and heating is fixedly installed by bearing in corresponding first guide rod, 141 position in the quadrangle of 13 one end
Cylinder 15 is fixedly connected, and bearing inner race is fixedly connected with the second guide rod 17, and the second guide rod 17 and the first guide rod 141 are parallel simultaneously
Extend towards 13 direction of hydraulic stem, linked block 171 is set on second guide rod 17, and linked block 171 and the second guide rod 17 pass through spiral shell
Line connection, linked block 171 are fixedly connected with the end of the first guide rod 141；Second guide rod 17 is close to one end of cartridge heater 15
First gear 172 is fixedly installed, driving motor 18, driving motor 18 is fixedly installed in corresponding second guide rod, 17 position of cartridge heater 15
Output end be fixedly connected with second gear 181, second gear 181 is engaged with first gear 172.
The working principle of above-mentioned technical proposal are as follows:
The first guide rod 141 is driven to move into die casting chamber 10 by hydraulic stem 13, the first guide rod 141 passes through linked block
171 drive the second guide rod 17 mobile, and the second guide rod 17 pushes cartridge heater 15 mobile towards magnesium alloy mixture die casting region,
When needing to be finely adjusted heating region, driving motor 18 works, and driving motor 18 drives second gear 181 to rotate, and second
Gear 181 drives first gear 172 to rotate, and first gear 172 drives the rotation of the second guide rod 17, due to the second guide rod 17 with
Cartridge heater 15 is connected by bearing so that relative displacement occurs between the second guide rod 17 and linked block 171, linked block 171 with
First guide rod 141 is fixedly connected, and is moved forward and backward cartridge heater 15 in magnesium alloy mixture die casting region.
Above-mentioned technical proposal has the beneficial effect that
It drives cartridge heater 15 to be moved forward and backward in magnesium alloy mixture die casting region by motor, makes cartridge heater 15 to die casting area
Domain heating location is adjustable, and heating region is wider, and heating effect is more preferable, facilitates adjusting.
As shown in figure 5, more stable in order to cooperate emptying door and die casting chamber 10, preferred technical solution is die casting chamber 10
The side upper end of length direction is uniformly arranged several pedestals 20, and locking level 21, locking level 21 is hingedly arranged on each pedestal 20
It may be stuck in after rotation on emptying door 12, drive rod 22,10 side wall of die casting chamber is arranged close to the outside of 20 one end of pedestal in locking level 21
Telescopic rod 23 is arranged in corresponding 22 bottom end of drive rod, and strip hole 24, the telescopic end and strip of telescopic rod 23 is arranged in 22 bottom end of drive rod
Hole 24 is hinged；Location hole 25, the setting of 12 top of emptying door is arranged towards the side of 12 center position of emptying door in 21 top of locking level
Locating ring 26,26 lateral surface of locating ring corresponds to 25 position of location hole setting locating rod 27, after locking level 21 is stuck on cover 12,
Locating rod 27 is inserted into location hole 25.
The working principle of above-mentioned technical proposal are as follows:
Telescopic rod 23 stretches out, and the telescopic end of telescopic rod 23 slides in strip hole 24, and the telescopic end of telescopic rod 23 pushes lock
Fixed pole 21 rotates, and locking level 21 pushes down cover 12, and the location hole 25 on locking level 21 is inserted into the locating rod 27 on locating ring 26
On.
Above-mentioned technical proposal has the beneficial effect that
It is stretched out by telescopic rod 23, the telescopic end of telescopic rod 23 slides in strip hole 24, and the telescopic end of telescopic rod 23 pushes away
Dynamic locking level 21 rotates, and locking level 21 pushes down cover 12, and the location hole 25 on locking level 21 is inserted into the positioning on locating ring 26
On bar 27, cooperates cover 12 with die casting chamber 10 tighter, die casting chamber 10 is made to be able to bear bigger pressure.
As shown in Fig. 6,7,8,10 inner side of die casting chamber uniformly opens up several sliding through holes 31, in each sliding through hole 31
It is provided with seismic mass 32, seismic mass 32 can be moved forward and backward in sliding through hole 31, and 10 lateral wall of die casting chamber corresponds to seismic mass 32
Position passes through bracket 33 and air bag 34 is fixedly installed, and has certain distance, air bag with 10 lateral wall of die casting chamber when air bag 34 is shunk
Inlet end and outlet side are set on 34, and several air dispelling holes 35, seismic mass is arranged backwards to the end face of 10 side wall of die casting chamber in seismic mass 32
Air inlet 36 is arranged in the end face of 32 corresponding air bags 34, and air inlet 36 is connected to air dispelling hole 35, the outlet side of air bag 34 and air inlet
36 are connected to by tracheae；High pressure gas holder 37 is fixedly installed on substrate 11, the outlet side of high pressure gas holder 37 and 34 inlet end of air bag are logical
Pipeline connection is crossed, the inlet end of high pressure gas holder 37 is supplied by high-pressure pump；Several floors, floor is arranged in 34 internal side wall of air bag
Material is soft rubber.
The working principle of above-mentioned technical proposal are as follows:
After telescopic rod 23 is shunk, to air bag 34 for high pressure gas, air bag 34 expands, seismic mass 32 is pushed up high pressure gas holder 37
Out, contact seismic mass 32 with magnesium alloy materials, high pressure gas drives air bag 34 and seismic mass 32 to be shaken, and then drives magnesium
Alloy material vibration；High pressure gas is entered by the air inlet 36 in seismic mass 32 simultaneously, is discharged by air dispelling hole 35, magnesium is closed
NaHCO in golden material hole3The powder of output is blown down after heated.
Above-mentioned technical proposal has the beneficial effect that
It drives air bag 34 and seismic mass 32 to be shaken by high pressure gas, and then drives magnesium alloy materials vibration, make magnesium
NaHCO in alloy material hole3The powder of output is moved with vibration after heated, and then the hole of magnesium alloy materials is discharged
In；High pressure gas is entered by the air inlet 36 in seismic mass 32 simultaneously, is discharged by air dispelling hole 35, and high pressure gas is closed by magnesium
Golden material hole enters, by NaHCO in magnesium alloy materials hole3The powder of output is blown down after heated, is prevented in magnesium alloy materials
There is sundries residual, while magnesium alloy materials are blowed to by high pressure gas, magnesium alloy materials is made to cool down, and then conveniently presses next time
Casting, prevents the NaHCO in High Temperature Magnesium Alloy material powder mixture3Be heated premature reaction before die casting, the magnesium after preventing die casting
Alloy material pore-size with it is expected that pore-size is not inconsistent.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. the gradient porous magnesium alloy materials of bone defect healing, which is characterized in that consist of the following mass percentage components:
Zr0.8-1.9%, Ca1.2-4.8%, C4.1-7.7%, Al1.6-2.3%, Zn5.7-8.2%, Fe5.4-9%, surplus are
Mg；It include several holes inside magnesium alloy materials, the magnesium alloy materials outside side opposite with bone face coats Al2O3。
2. the gradient porous magnesium alloy materials of bone defect healing as described in claim 1, which is characterized in that hole is divided into master
Hole and secondary orifices, the aperture of main aperture are 100-800 microns, and the aperture of secondary orifices is 10-80 microns.
3. a kind of preparation method of gradient porous magnesium alloy materials, which comprises the steps of:
Step S1: Mg-Ca, Mg-Zn powder and NaHCO are taken3Mixing obtains mixture, and Mg-Ca content of powder is 4.8%-12%,
Mg-Zn content of powder is 80%-85%, NaHCO3Content be 3%-15.2%；
Step S2: the resulting mixture of step S1 is put into ball mill and is passed through inert atmosphere protection progress ball milling, Ball-milling Time
8-10h；
Step S3: charging suppress hole least part with first pressure first, and first pressure has been suppressed to the mixture suppressed
Heated, then charge with second pressure suppress hole Intermediate part, second pressure suppressed to the mixture suppressed into
Row heating finally charges and suppresses hole Intermediate part with third pressure, and third pressure, which has been suppressed, carries out the mixture suppressed
Heating, first pressure, second pressure, the size of third pressure are gradually reduced；
Step S4: the precast body that step S3 is suppressed carries out vacuum-sintering, and temperature is controlled at 600-680 DEG C, and it is more to obtain gradient
Hole magnesium alloy materials.
4. a kind of preparation method of gradient porous magnesium alloy materials according to claim 3, which is characterized in that further include as
Lower step:
Step S5: the magnesium alloy materials sintered are put into carburizer, are then evacuated down to 10-4Pa；
Step S6: carburizing gas is passed through by the first catalysing tube, the mass ratio of the first energizer composition is lanthanum carbonate: cerium oxide:
Calcium carbonate: ethyl alcohol=4-5.5:1-1.5:5-7:11-14, the first energizer are attached on magnesium alloy materials, are heated to 420-560
DEG C, keep the temperature 4-5h；
Step S7: carburizing gas is passed through by the first catalysing tube, the mass ratio of the second energizer composition is lanthanum carbonate: calcium carbonate:
Ethyl alcohol=2-4.5:3-5:11-14, the second energizer are attached on magnesium alloy materials, are cooled to 320-360 DEG C, keep the temperature 6-7h；
Step S8: finally by carburizing stove evacuation, it is filled with inert atmosphere protection, keeps the temperature 18h.
5. a kind of preparation method of gradient porous magnesium alloy materials according to claim 4, which is characterized in that further include as
Lower step:
Step S9: being ethyl alcohol: epoxy resin: marzacotto: silicon powder: silicon carbide: silica: Al by mass ratio2O3=16-18:
The component of 8-10:4-8:40-65:15-20:20-35 is mixed；
S10: the side that magnesium alloy materials made from step S8 correspond to bone face is immersed in mixture made from step S9, is sufficiently connect
Touch 2min；
S11: the step S10 magnesium alloy materials for being stained with mixture made from S9 being put into sintering furnace, are warming up to 700-800 DEG C,
Firing time 70-90min.
6. a kind of for manufacturing the die casting equipment of gradient porous magnesium alloy materials as claimed in claim 3, which is characterized in that packet
Substrate (11), die casting chamber (10) and die cast plate (12) are included, is fixedly connected substrate (11) at the top of die casting chamber (10), die casting chamber (10) side
Emptying door is arranged in face, and die cast plate (12) are arranged in die casting chamber (10), hydraulic stem (13) are fixedly installed on substrate (11), hydraulic stem
(13) it is fixedly connected with die cast plate (12) centre.
7. according to claim 6 a kind of for manufacturing the die casting equipment of gradient porous magnesium alloy materials, which is characterized in that
It is fixedly installed guide pad (14) inside die casting chamber (10) towards the side wall quadrangle of hydraulic stem (13) one end, die cast plate (12) quadrangle
Vertically fixed setting the first guide rod (141), the first guide rod (141) pass through guide pad (14) outwardly, the first guide rod
It (141) can the sliding in guide pad (14).
8. according to claim 7 a kind of for manufacturing the die casting equipment of gradient porous magnesium alloy materials, which is characterized in that
It is arranged cartridge heater (15) on the outside of die casting chamber (10), heating plate (151) are fixedly installed in cartridge heater (15) inner wall, on the outside of die casting chamber (10)
Slide bar (16) are arranged in four sidelines along the first guide rod (141) direction, and slide bar (16) both ends are fixedly connected with die casting chamber (10),
Sliding block (161) are arranged in the side of corresponding slide bar (16) on the outside of cartridge heater (15), and slide bar (16) passes through sliding block (161), sliding block (161)
It can be slided on slide bar (16).
9. according to claim 8 a kind of for manufacturing the die casting equipment of gradient porous magnesium alloy materials, which is characterized in that
Cartridge heater (15) passes through bearing fixed setting second close to corresponding first guide rod (141) position in quadrangle of hydraulic stem (13) one end
Guide rod (17), bearing outer ring are fixedly connected with cartridge heater (15), and bearing inner race is fixedly connected with the second guide rod (17), and second
Guide rod (17) is parallel with the first guide rod (141) and extends towards hydraulic stem (13) direction, is arranged on the second guide rod (17) and connects
Motion block (171), linked block (171) are connected through a screw thread with the second guide rod (17), linked block (171) and the first guide rod
(141) end is fixedly connected；First gear (172) are fixedly installed close to the one end of cartridge heater (15) in second guide rod (17),
Corresponding second guide rod (17) position fixed setting driving motor (18) of cartridge heater (15), the output end of driving motor (18) are fixed
It connects second gear (181), second gear (181) is engaged with first gear (172).
10. according to claim 9 a kind of for manufacturing the die casting equipment of gradient porous magnesium alloy materials, feature exists
In the side upper end of die casting chamber (10) length direction is uniformly arranged several pedestals (20), hinged setting on each pedestal (20)
Locking level (21) may be stuck on emptying door (12) after locking level (21) rotation, and locking level (21) is close to the outer of pedestal (20) one end
Drive rod (22) are arranged in side, and die casting chamber (10) (10) side wall corresponds to drive rod (22) bottom end setting telescopic rod (23), drive rod
(22) bottom end setting strip hole (24), the telescopic end of telescopic rod (23) and strip hole (24) are hinged；Locking level (21) top direction
Location hole (25) are arranged in the side of emptying door (12) center position, and locating ring (26) are arranged in emptying door (12) top, locating ring
(26) lateral surface corresponds to location hole (25) position setting locating rod (27), after locking level (21) is stuck on cover (12), positioning
Bar (27) is inserted into location hole (25).
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