CN101891482B - Method for manufacturing superplastic forming ceramic thin-wall product - Google Patents
Method for manufacturing superplastic forming ceramic thin-wall product Download PDFInfo
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- CN101891482B CN101891482B CN2010101597115A CN201010159711A CN101891482B CN 101891482 B CN101891482 B CN 101891482B CN 2010101597115 A CN2010101597115 A CN 2010101597115A CN 201010159711 A CN201010159711 A CN 201010159711A CN 101891482 B CN101891482 B CN 101891482B
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Abstract
The invention provides a method for manufacturing a superplastic forming ceramic thin-wall product, belonging to the method for manufacturing a thin-wall product and aiming at solving the problems that the method for manufacturing the traditional ceramic thin-wall product needs the edge pressing force and also needs the exterior air source to inflate and expand the mould, and the air sealing is difficult. The method comprises the following steps of: (1) preparing an air bag; (2) preparing workpieces; and (3) putting the workpieces into a vacuum hot press sintering furnace, preserving the heat of the workpiece twice, cooling to room temperature, demoulding and removing the air bag to obtain the superplatic forming ceramic thin-wall product. The method of the invention does not need edge pressing force and does not need to lead air to the mould in the vacuum hot press sintering furnace, the ceramic material can be formed into integral parts at one time after the gasifying agent sealed in the air bag is expanded, the formability of the superplastic forming material is good, and the net forming can be realized.
Description
Technical field
The present invention relates to a kind of method of manufacture of thin-gage goods.
Background technology
Stupalith plays an important role in the modern industrial as one of three big pillars of material.Nano ceramics has good room temperature and mechanical behavior under high temperature, bending strength, fracture toughness property; It all is widely used aspect many at cutting tool, bearing, high-temperature engine parts etc.; And under rigorous environment such as many ultrahigh-temperature, deep-etching, play the irreplaceable effect of other materials, have broad application prospects.
But,, at present the working method of ceramic thin-gage goods is generally mechanical workout or in the mould for hot pressed sintering of simple shape, cost is high, the low shortcoming that maybe can only produce the simple shape part of efficient but these methods exist because stupalith is not only crisp but also hard.It is the important means that realizes complicated shape part near-net-shape that the ductility of utilizing nano ceramics at high temperature to have forms processing, and people such as U.S. TG Nieh adopt expansive forming technology to make hemisphere-shaped workpiece.But; Owing in forming process, pressure-pad-force should be arranged, there is external air source in mould, to inflate again and accomplishes bulging, the mould that uses that particularly is shaped is graphite; External air source is to get in the graphite jig through metal tube; The sealing of gas is difficulty very, must have special equipment could realize complex process.
Summary of the invention
Technical problem to be solved by this invention is for the method that solves existing ceramic thin-gage goods pressure-pad-force to be arranged; There is external air source in mould, to inflate again and accomplishes bulging; The problem of air seal difficulty provides a kind of method of manufacture of superplastic forming ceramic thin-wall product.
The method of manufacture of superplastic forming ceramic thin-wall product of the present invention is following: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used the upper surface of thickness then, again patrix is positioned on the counterdie, obtain workpiece as the superplasticity pottery circular sheet covering counterdie groove of 2mm～6mm; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～10MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 15MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1; Said superplastic forming ceramic thin-wall product is superplastic formation pottery semisphere goods; Superplasticity pottery circular sheet is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic circular sheet, ultra-fine brilliant zirconia ceramics circular sheet or ultra-fine crystal alumina ceramic circular sheet in the step 2; The add-on of vaporized chemical makes the air bag expansion in the step 1, forms superplastic formation pottery semisphere goods thereby promote ceramic circular sheet to expand.
The method of manufacture of superplastic forming ceramic thin-wall product of the present invention is following: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then ceramic straight tube is put into expanding die, again expanding die is put between the upper die and lower die, and outer die casing is fixed on the expanding die outside surface, obtain workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～5MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1; Said superplastic forming ceramic thin-wall product is a thin-walled pottery adapter bonnet; Ceramic straight tube is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic straight tube, ultra-fine brilliant zirconia ceramics straight tube or ultra-fine crystal alumina ceramic straight tube in the step 2; The add-on of vaporized chemical makes the air bag expansion in the step 1, forms thin-walled pottery adapter bonnet thereby promote ceramic straight tube to expand.
Method of the present invention neither needs pressure-pad-force; Also need not in the mould in the vacuum heating-press sintering stove, ventilate; The vaporized chemical expansion back stupalith that is sealed in the air bag can once form one-piece parts, and the plasticity of superplastic forming state material is good, can realize clean shaping.Compare with mechanical workout, need not take out material, material use efficiency high (mechanical workout is made such ceramic part usually needs tens even hundreds of hour, and efficient is low, and cost is high); The inventive method production piece part needs ten hours, if equipment is bigger, and accessory size is less, then once can produce a plurality of parts, and production efficiency significantly improves.
Description of drawings
Fig. 1 is the synoptic diagram of preparation superplastic formation pottery semisphere goods in the embodiment six; The synoptic diagram of preparation superplastic formation pottery semisphere goods in Fig. 2 embodiment six; Fig. 3 is the synoptic diagram of preparation thin-walled pottery adapter bonnet in the embodiment 15; The synoptic diagram of preparation thin-walled pottery adapter bonnet in Fig. 4 embodiment 15.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used the upper surface of thickness then, again patrix is positioned on the counterdie, obtain workpiece as the superplasticity pottery circular sheet covering counterdie groove of 2mm～6mm; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～10MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 15MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1.
Embodiment two: what this embodiment and embodiment one were different is that said superplastic forming ceramic thin-wall product is superplastic formation pottery semisphere goods.Other is identical with embodiment one.
Embodiment three: what this embodiment was different with one of embodiment one or two is that superplasticity pottery circular sheet is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic circular sheet, ultra-fine brilliant zirconia ceramics circular sheet or ultra-fine crystal alumina ceramic circular sheet in the step 2.Other is identical with one of embodiment one or two.
In this embodiment in ultra-fine brilliant zirconium white and the ultra-fine crystal alumina blended complex phase ceramic circular sheet ultra-fine brilliant zirconium white and ultra-fine crystal alumina be arbitrarily than.
Embodiment four: this embodiment is different with one of embodiment one to three is to be that 8MPa, temperature are insulation 20 minutes under 900 ℃ the condition at workpiece surface pressure in the step 3.Other is identical with one of embodiment one to three.
Embodiment five: this embodiment is different with one of embodiment one to four is to be that 20MPa, temperature are insulation 60 minutes under 1500 ℃ the condition at upper surface pressure in the step 4.Other is identical with one of embodiment one to four.
Embodiment six: combine the method for manufacture of Fig. 1 and this embodiment of Fig. 2 superplastic formation pottery semisphere goods following: one, bicarbonate of ammonia to be put into the container that the superplasticity titanium alloy is processed,, form air bag 4 again with container sealing; Two, air bag 4 is put into the groove of counterdie 5, used thickness to cover the upper surface of counterdies 5 grooves as the superplasticity pottery circular sheet 3 of 30mm～80mm then, again patrix 2 is positioned on the counterdie 5, obtain workpiece as 2mm～6mm, diameter; Three, workpiece being put into vacuum heating-press sintering stove 1, is that 1MPa～10MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 15MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout again, promptly gets superplastic formation pottery semisphere goods 6.
Embodiment seven: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 0.05g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used thickness to be 2mm then, diameter is the upper surface that the superplasticity pottery circular sheet of 30mm covers the counterdie groove, patrix is positioned on the counterdie again, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is insulation 10 minutes under 800 ℃ the condition for the 1MPa temperature at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 15MPa, temperature are insulation 60 minutes under 1550 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1.
Superplasticity pottery circular sheet is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic circular sheet in this embodiment step 2, and the mass ratio of ultra-fine brilliant zirconium white and ultra-fine crystal alumina is 1 : 1 in ultra-fine brilliant zirconium white and the ultra-fine crystal alumina blended complex phase ceramic circular sheet.
Embodiment eight: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 0.62g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used thickness to be 2mm then, diameter is the upper surface that the superplasticity pottery circular sheet of 60mm covers the counterdie groove, patrix is positioned on the counterdie again, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is insulation 30 minutes under 1000 ℃ the condition for the 10MPa temperature at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 30MPa, temperature are insulation 90 minutes under 1700 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1.
Superplasticity pottery circular sheet is the ultra-fine crystal alumina ceramic circular sheet of ultra-fine crystalline substance in this embodiment step 2.
Embodiment nine: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 0.81g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used thickness to be 6mm then, diameter is the upper surface that the superplasticity pottery circular sheet of 60mm covers the counterdie groove, patrix is positioned on the counterdie again, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is insulation 30 minutes under 1000 ℃ the condition for the 10MPa temperature at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 30MPa, temperature are insulation 30 minutes under 1400 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1.
Superplasticity pottery circular sheet is ultra-fine brilliant zirconia ceramics circular sheet in this embodiment step 2.
Embodiment ten: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then ceramic straight tube is put into expanding die, again expanding die is put between the upper die and lower die, and outer die casing is fixed on the expanding die outside surface, obtain workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～5MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1.
Embodiment 11: what this embodiment and embodiment ten were different is that said superplastic forming ceramic thin-wall product is a thin-walled pottery adapter bonnet.Other is identical with embodiment ten.
Embodiment 12: this embodiment is different with one of embodiment ten or 11 is to be that 8MPa, temperature are insulation 20 minutes under 900 ℃ the condition at workpiece surface pressure in the step 3.Other is identical with one of embodiment ten or 11.
Embodiment 13: what this embodiment was different with one of embodiment ten to 12 is that ceramic straight tube is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic straight tube, ultra-fine brilliant zirconia ceramics straight tube or ultra-fine crystal alumina ceramic straight tube in the step 2.Other is identical with one of embodiment ten to 12.
In this embodiment in ultra-fine brilliant zirconium white and the ultra-fine crystal alumina blended complex phase ceramic straight tube ultra-fine brilliant zirconium white and ultra-fine crystal alumina be arbitrarily than.
Embodiment 14: this embodiment and embodiment ten to 13 are different is to be that 20MPa, temperature are insulation 60 minutes under 1500 ℃ the condition at upper surface pressure in the step 4.Other is identical with one of embodiment ten to 13.
Embodiment 15: combine the method for manufacture of thin-walled pottery adapter bonnet in Fig. 3 and this embodiment of Fig. 4 following: one, bicarbonate of ammonia to be put into the container that the superplasticity titanium alloy is processed,, form air bag 12 again with container sealing; Two, air bag 12 is put into ceramic straight tube 11, then ceramic straight tube 11 is put into expanding die 9, again expanding die 9 is put between patrix 8 and the counterdie 13, and outer die casing 10 is fixed on expanding die 9 outside surfaces, obtain workpiece; Three, workpiece being put into vacuum heating-press sintering stove 7, is that 1MPa～5MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets thin-walled pottery adapter bonnet 14.
Embodiment 16: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 0.37g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then with diameter 20mm, height 40mm, the ceramic straight tube of wall thickness 2mm is put into expanding die, expanding die is put between the upper die and lower die again, and outer die casing is fixed on the expanding die outside surface, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa, temperature are insulation 10 minutes under 800 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa, temperature are insulation 60 minutes under 1400 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1.
Ceramic straight tube is ultra-fine brilliant zirconia ceramics straight tube in this embodiment step 2.
Embodiment 17: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 8.4g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then with diameter 60mm, height 100mm, the ceramic straight tube of wall thickness 2mm is put into expanding die, expanding die is put between the upper die and lower die again, and outer die casing is fixed on the expanding die outside surface, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 5MPa, temperature are insulation 30 minutes under 1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa, temperature are insulation 60 minutes under 1400 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1.
Ceramic straight tube is ultra-fine brilliant zirconia ceramics straight tube in this embodiment step 2.
Embodiment 18: the method for manufacture of superplastic forming ceramic thin-wall product is following in this embodiment: one, the 10.3g vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then with diameter 60mm, height 100mm, the ceramic straight tube of wall thickness 6mm is put into expanding die, expanding die is put between the upper die and lower die again, and outer die casing is fixed on the expanding die outside surface, obtains workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 5MPa, temperature are insulation 30 minutes under 1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa, temperature are insulation 30 minutes under 1700 ℃ the condition at upper surface pressure, is cooled to room temperature then, and the demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1.
Ceramic straight tube is ultra-fine crystal alumina ceramic straight tube in this embodiment step 2.
Claims (8)
1. the method for manufacture of superplastic forming ceramic thin-wall product is characterized in that the method for manufacture of superplastic forming ceramic thin-wall product is following: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into the groove of counterdie, used the upper surface of thickness then, again patrix is positioned on the counterdie, obtain workpiece as the superplasticity pottery circular sheet covering counterdie groove of 2mm～6mm; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～10MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 15MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical is a bicarbonate of ammonia in the step 1; Superplasticity pottery circular sheet is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic circular sheet, ultra-fine brilliant zirconia ceramics circular sheet or ultra-fine crystal alumina ceramic circular sheet in the step 2.
2. the method for manufacture of superplastic forming ceramic thin-wall product according to claim 1 is characterized in that said superplastic forming ceramic thin-wall product is superplastic formation pottery semisphere goods.
3. the method for manufacture of superplastic forming ceramic thin-wall product according to claim 1 is characterized in that in the step 3 at workpiece surface pressure being that 8MPa, temperature are insulation 20 minutes under 900 ℃ the condition.
4. according to the method for manufacture of claim 1,2 or 3 described superplastic forming ceramic thin-wall products, it is characterized in that in the step 4 at upper surface pressure being that 20MPa, temperature are insulation 60 minutes under 1500 ℃ the condition.
5. the method for manufacture of superplastic forming ceramic thin-wall product is characterized in that the method for manufacture of superplastic forming ceramic thin-wall product is following: one, vaporized chemical is put into the container that the superplasticity titanium alloy is processed, again with container sealing, form air bag; Two, air bag is put into ceramic straight tube, then ceramic straight tube is put into expanding die, again expanding die is put between the upper die and lower die, and outer die casing is fixed on the expanding die outside surface, obtain workpiece; Three, workpiece being put into the vacuum heating-press sintering stove, is that 1MPa～5MPa, temperature are to be incubated 10～30 minutes under 800 ℃～1000 ℃ the condition at workpiece surface pressure; Four, will pass through workpiece that step 3 handles is that 10MPa～30MPa, temperature are to be incubated 30～90 minutes under 1400 ℃～1700 ℃ the condition at upper surface pressure; Be cooled to room temperature then; The demoulding is removed air bag through mechanical workout or chemical corrosion again, promptly gets superplastic forming ceramic thin-wall product; Used vaporized chemical bicarbonate of ammonia in the step 1; Ceramic straight tube is ultra-fine brilliant zirconium white and ultra-fine crystal alumina blended complex phase ceramic straight tube, ultra-fine brilliant zirconia ceramics straight tube or ultra-fine crystal alumina ceramic straight tube in the step 2.
6. the method for manufacture of superplastic forming ceramic thin-wall product according to claim 5 is characterized in that said superplastic forming ceramic thin-wall product is a thin-walled pottery adapter bonnet.
7. the method for manufacture of superplastic forming ceramic thin-wall product according to claim 5 is characterized in that in the step 3 at workpiece surface pressure being that 8MPa, temperature are insulation 20 minutes under 900 ℃ the condition.
8. according to the method for manufacture of claim 5,6 or 7 described superplastic forming ceramic thin-wall products, it is characterized in that in the step 4 at upper surface pressure being that 20MPa, temperature are insulation 60 minutes under 1500 ℃ the condition.
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| CN103769454B (en) * | 2014-02-13 | 2016-05-18 | 哈尔滨工业大学 | A kind of hot forming method of thin brilliant TC21 titanium alloy plate |
| CN106181237B (en) * | 2016-07-14 | 2018-01-12 | 西北工业大学 | The titanium alloy coated side manufacture method of aero-engine composite material fan blade |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068771A (en) * | 1991-07-25 | 1993-02-10 | 万通运动器材工业股份有限公司 | The manufacture method of composite component |
| EP0585978A2 (en) * | 1989-06-30 | 1994-03-09 | TDK Corporation | Living hard tissue replacement, its preparation, and preparation of integral body |
| JP2004107156A (en) * | 2002-09-19 | 2004-04-08 | National Institute For Materials Science | Zirconia-based super plasticity ceramic |
| CN1631567A (en) * | 2004-12-28 | 2005-06-29 | 哈尔滨理工大学 | Method for manufacturing superplastic forming and diffuse bonding magnet alloy product |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585978A2 (en) * | 1989-06-30 | 1994-03-09 | TDK Corporation | Living hard tissue replacement, its preparation, and preparation of integral body |
| CN1068771A (en) * | 1991-07-25 | 1993-02-10 | 万通运动器材工业股份有限公司 | The manufacture method of composite component |
| JP2004107156A (en) * | 2002-09-19 | 2004-04-08 | National Institute For Materials Science | Zirconia-based super plasticity ceramic |
| CN1631567A (en) * | 2004-12-28 | 2005-06-29 | 哈尔滨理工大学 | Method for manufacturing superplastic forming and diffuse bonding magnet alloy product |
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