CN100554457C - The method of self-spreading high-temperature synthesis of TiCo porous material - Google Patents
The method of self-spreading high-temperature synthesis of TiCo porous material Download PDFInfo
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- CN100554457C CN100554457C CNB200710118212XA CN200710118212A CN100554457C CN 100554457 C CN100554457 C CN 100554457C CN B200710118212X A CNB200710118212X A CN B200710118212XA CN 200710118212 A CN200710118212 A CN 200710118212A CN 100554457 C CN100554457 C CN 100554457C
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Abstract
A kind of method of self-spreading high-temperature synthesis of TiCo porous material belongs to powder metallurgy-self propagating high temperature synthesis technical field.With titanium valve and drillings is raw material, mixes the back and adopts the method for powder compression to prepare base substrate, and base substrate one end is connected with the W silk of portfire, puts into the vacuum reaction synthesizer, and vacuum tightness is higher than 4 * 10
-2Begin during Pa to heat up, reach starting ignition device after the temperature of preheating, the self propagating high temperature building-up reactions promptly takes place, obtain the self propagating high temperature synthetic sample.Advantage is: prepared TiCo alloy porosity is 30-55%, and percentage of open area is more than 50%, and ultimate compression strength is at 100-377MPa, and Young's modulus is at 8-40GPa, and Young's modulus and its mechanical property can be adjusted by the size of porosity fully.
Description
Technical field
The invention belongs to powder metallurgy-self propagating high temperature synthesis technical field, a kind of method of self-spreading high-temperature synthesis of TiCo porous material is provided especially, powder pressing forming-self propagating high temperature synthetic (Self-propagatingHigh-temperature Synthesis, abbreviation SHS) TiCo alloy porous material.
Background technology
Self propagating high temperature synthesizes (SHS), is to utilize chemical reaction self heat release to prepare the new technology of material.SHS is a kind of material new synthetic method that is grown up by USSR (Union of Soviet Socialist Republics) the sixties in 20th century, its outstanding feature is exactly the high energy thermopositive reaction that makes full use of when forming compound between element, except causing the necessary a small amount of external energy of building-up reactions, entire reaction course mainly relies on the heat release of material self to keep.Therefore, this technology can be saved resource greatly, and this technology also has synthetic technology short, and the product purity height is low in the pollution of the environment, the logging material synthetic be sintered in outstanding advantage such as one.
The TiCo alloy is as a kind of titanium alloy material, has that intensity height, proportion are low, antifatigue, corrosion-resistant, wear-resistant, low magnetic, an advantage such as nontoxic; Simultaneously, the TiCo alloy also has good biocompatibility, especially porous TiCo alloy is easy to be fixed by human body, and because its good three-dimensional communication hole, can make the tissue metabolism of human body, the transmission of nutritive substance in human body is uncrossed to be carried out, so TiCo alloy porous material is a kind of highly desirable permanent implantation medical material, has broad application prospects in medical field.
The rarely seen in the world report of development of present porous TiCo alloy.Domestic research focuses mostly on the basis of TiCo dense material, its technological process adopts the mode of LASER HEAT spraying to plate one deck to several layers of TiCo alloy layer on the titanium matrix, make pure titanium material not only have superior corrosion resistance energy, abrasion resistance properties but also mechanical property and also improve greatly, therefore obtained concern to a certain degree at home.But fine and close TiCo alloy material is owing to the mechanical property of mechanical property considerably beyond the bone of human body, joint material, its Young's modulus (100GPa) is higher than the stress shielding that human body bone, joint material (1-40GPa) cause embedded material and matrix easily far away, cause material loosening, cause the graft failure of material.
Porous TiCo alloy material, both brought into play that good corrosion-resistant, the rub resistance of this alloy, low magnetic, proportion are low, performances such as antifatigue and excellent biological compatibility, again by introducing three-dimensional porous structure, improved the mechanical compatibility of itself and human body bone, joint material, make its Young's modulus reach the degree that is complementary with human body bone, joint, so this material will become the research focus of biological stephanoporate medical material.It is better that practical application mesoporosity degree is controlled at 30-70%, and prepared material should present isotropic hole connectedness, and bore hole size distributes and is mainly 50-500 μ m.
Powder pressing forming is a kind of technology of preparation powdered material of widespread usage.This processing unit is simple, and the working hour is short, and therefore flexible and convenient operation adopts this moulding process, helps reducing production cost, for the industrialization process of product provides a great convenience.
Summary of the invention
The object of the present invention is to provide a kind of method of self-spreading high-temperature synthesis of TiCo porous material, because porous material adopts the method for adding pore-forming material more at present, though porosity can reach more than 50%, the intensity extreme difference can not use as the biological substitution material.Self propagating high temperature sintering resultant is a kind of intermetallic compound, have very high intensity, and the heat in the reaction process is enough to the deposite metal element, hole in the pressed compact is kept and is interconnected.Solved between the intensity of present bio-medical material and the porosity can not matched well problem.
Adopt granularity 2-300 μ mTi powder and 2-300 μ mCo powder as starting material, 40%-60% takes by weighing raw material powder according to the Ti atomic percent, and ball milling mixes.On hydraulic dynamometer, adopt 100MPa-400MPa pressure cold stamping die molded.Base substrate is placed in the vacuum reaction synthesizer, vacuumizes.Treat that vacuum tightness reaches 1 * 10
-2-4 * 10
-2Begin behind the Pa to heat up, the preheating temperature scope is 100-600 ℃, reach preheating temperature after, the self propagating high temperature building-up reactions with the tungsten filament base substrate that ignites, can take place in insulation 10-30min starting ignition device, obtains the self propagating high temperature sintered products.
The invention has the advantages that: prepared TiCo alloy porous material porosity is 30-55%, percentage of open area can reach more than 50%, bore hole size is at 50-500 μ m, can satisfy that general osseous tissue is grown into and the transmission of human physiological activity, meta-bolites is carried out smoothly.The synthetic porous TiCo of institute alloy compressive strength is between 85-377MPa, and folding strength is between 50-280MPa, and Young's modulus is at 8-20GPa, is close with the Young's modulus of the netted osseous tissue of human body, can satisfy the requirement of strength of bone.
Description of drawings:
0 ℃ of preheating 10min of Figure 145, sample SEM photo.
00 ℃ of preheating 10min of Figure 25, sample SEM photo.
Embodiment
Embodiment 1
Adopt 20 μ mTi powder and 2 μ mCo powder as starting material, according to 1: 1 ball mill mixing of atomic ratio.
This mixed powder 6g that weighs with scale puts into cylindrical mold compression molding under 100MPa.
Base substrate is packed in the self-control vacuum reaction synthesizer, and base substrate one end contacts with the W silk of portfire, and forvacuum reaches 4 * 10
-2Pa begins to heat up then, and preheating temperature is 450 ℃, is incubated starting ignition device after 10 minutes, by the W silk blank that ignites, the self propagating high temperature building-up reactions can take place, and obtains the self propagating high temperature sintered sample.
The porosity of planting the TiCo alloy porous insert of prepared thus is 40.5%, and percentage of open area is 40%, and the ultimate compression strength during compression is 323Mpa, and the Young's modulus of material is 9.0Gpa.
The stereoscan photograph of the TiCo alloy porous insert of this kind prepared is seen Fig. 1
Case study on implementation 2
Its working method and processing condition are substantially with case study on implementation one, unique different be that preheating temperature before the self propagating high temperature building-up reactions takes place is 500 ℃.
It is 30.9% that the porosity of the TiCo alloy porous insert of this prepared is arranged, and percentage of open area is 70.4%; Ultimate compression strength during compression is 334Mpa, and folding strength is that Young's modulus is 11.0Gpa.
TiCo alloy porous insert stereoscan photograph such as Fig. 2 of this prepared.
Claims (1)
1, the method for self-spreading high-temperature synthesis of TiCo porous material is characterized in that: adopt Ti powder and Co powder as starting material, 40%-60% takes by weighing raw material powder according to the Ti atomic percent, and ball mill mixing makes material mixing even; Under hydraulic dynamometer, use 100-400MPa pressure cold stamping die molded; The base substrate that suppresses is placed the vacuum reaction synthesizer, vacuumize; Treat that vacuum tightness reaches 1 * 10
-2-4 * 10
-2Pa begins to heat up, and the preheating temperature scope is 100-600 ℃, reach preheating temperature after, insulation 10min-30min, the self propagating high temperature building-up reactions with the tungsten filament base substrate that ignites, takes place this moment in the starting ignition device; The question response container is cooled to room temperature, obtains the self propagating high temperature sintered products; The granularity of Ti powder is 2-300 μ m; The granularity of Co powder is 2-300 μ m.
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| CNB200710118212XA CN100554457C (en) | 2007-07-02 | 2007-07-02 | The method of self-spreading high-temperature synthesis of TiCo porous material |
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| CNB200710118212XA CN100554457C (en) | 2007-07-02 | 2007-07-02 | The method of self-spreading high-temperature synthesis of TiCo porous material |
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| CN101078067A CN101078067A (en) | 2007-11-28 |
| CN100554457C true CN100554457C (en) | 2009-10-28 |
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Families Citing this family (11)
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| CA2851250A1 (en) | 2011-10-05 | 2013-04-11 | Texas Tech University | Antibacterial metallic nanofoam and related methods |
| CN103205721B (en) * | 2013-03-19 | 2015-10-28 | 昆山海普电子材料有限公司 | A kind of production method of titanium-aluminium alloy target material |
| CN103182507B (en) * | 2013-03-19 | 2015-04-15 | 昆山海普电子材料有限公司 | Production method of chromium-aluminium alloy target material |
| CN104532058B (en) * | 2014-12-15 | 2017-02-22 | 中南大学 | Medical implanted porous cobalt-titanium alloy material and preparation method thereof |
| CN104588660B (en) * | 2015-01-07 | 2016-12-07 | 中南大学 | A kind of solid phase combustion synthetic method preparing porous metals integral section |
| CN105695800A (en) * | 2016-04-14 | 2016-06-22 | 熊启兵 | Bracket for power grid |
| CN106448792B (en) * | 2016-10-11 | 2018-08-31 | 西南科技大学 | A kind of preparation method of aspidelite type prosthetic graft |
| US20180281055A1 (en) * | 2017-03-29 | 2018-10-04 | The Boeing Company | Titanium-Cobalt Alloy And Associated Thixoforming Method |
| CN109161725A (en) * | 2018-09-10 | 2019-01-08 | 江苏大学 | A kind of preparation method of the Ti-24Nb-4Zr-7.9Sn alloy of Co alloying |
| CN110041075B (en) * | 2019-05-21 | 2021-05-28 | 哈尔滨师范大学 | Rapid preparation method of high-purity Nb2SnC ceramic powder |
| CN113957279B (en) * | 2021-10-27 | 2022-04-26 | 东北大学 | Explosion-proof method and device for self-propagating production of kilogram-grade gamma-TiAlNb alloy in one-step furnace |
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Non-Patent Citations (4)
| Title |
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| 自蔓延高温合成（SHS）及其应用（二）. 杨遇春.稀有金属，第6期. 1991 |
| 自蔓延高温合成（SHS）及其应用（二）. 杨遇春.稀有金属，第6期. 1991 * |
| 自蔓延高温合成的材料和工艺. 汪华林等.功能材料，第27卷第3期. 1996 |
| 自蔓延高温合成的材料和工艺. 汪华林等.功能材料，第27卷第3期. 1996 * |
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