CN103255316A - Ti-Cu-Sn titanium alloy composition - Google Patents

Ti-Cu-Sn titanium alloy composition Download PDF

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CN103255316A
CN103255316A CN2013100167236A CN201310016723A CN103255316A CN 103255316 A CN103255316 A CN 103255316A CN 2013100167236 A CN2013100167236 A CN 2013100167236A CN 201310016723 A CN201310016723 A CN 201310016723A CN 103255316 A CN103255316 A CN 103255316A
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titanium alloy
titanium
tin
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CN103255316B (en
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曹龙泉
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National Pingtung University of Science and Technology
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Abstract

A Ti-Cu-Sn titanium alloy composition comprises 0.1-15 wt% of copper, 0.1-20 wt% of tin and 79.9-99.8 wt% of titanium. The Ti-Cu-Sn titanium alloy composition has the characteristics of high strength, low elastic modulus, wear resistance and the like, improves the processability of the titanium alloy and reduces the abrasion of a cutting tool; moreover, the Ti-Cu-Sn titanium alloy composition has the characteristics of no toxicity, good biocompatibility and the like, and can be applied to the preparation of biomedical materials; moreover, the addition of copper and tin also lowers the melting point of the titanium alloy and lowers the oxidation rate.

Description

Ti-Cu-Sn titanium alloy constituent
Technical field
The invention relates to a kind of titanium alloy constituent, particularly a kind of high strength, low elastic modulus so, abrasion performance and avirulent Ti-Cu-Sn titanium alloy constituent.
Background technology
Pure titanium or Ti-6Al-4V alloy have been widely used in the high-intensity material processing procedure of various needs field, even with those constituents that produces doctor's pure titanium of level or Ti-6Al-4V titanium alloy, are applied to give birth to doctor's material (first-class with material, artificial bone as tooth).
Existing titanium alloy constituent, announce No. 442272 " the ceramic dental tooth platform with a metallic core ", bulletin M348589 number " planting the body cover screw fixture cover " and announce patent cases such as " structures of crown Body of pillar " M380793 number as TaiWan, China, be to disclose to be used to form tooth with the moiety of structure (Body of pillar, cover screw fixture cover, plant body), this composition can be alloying constituents such as zirconium white, titanium alloy, aluminium alloy, titanium nitride, pure titanium.
With the making aspect of pure titanium or titanium alloy product, usually must be first pure titanium or titanium alloy constituent be carried out can obtaining after the processing treatment product of pure titanium or titanium alloy.
If as Material Processing, the fusing point of pure titanium is up to 1670 ℃ with pure titanium, and it must and be higher than under 1670 ℃ the high temperature situation in vacuum environment, carries out vacuum melting and casting.Because titanium is the high reactivity element, generally carries out processing treatment under 600~900 ℃ of situations, will be easy to generate oxygenizement, and along with processing temperature is more high, rate of oxidation is more fast, the oxidative phenomena that causes is more serious, will have influence on the character of pure titanium products; Moreover modulus of elasticity height and the toughness of pure titanium are higher, when with cutting tool it being carried out machining, cause cutting tool to wear and tear fast easily, and the not good shortcoming of processing precision; Moreover the intensity of pure titanium, hardness and rigidity are all obviously not enough, cause the application of this material to limit to some extent.
If with titanium alloy as Material Processing, curing a level Ti-6Al-4V alloy with life is example, though it has excellent in strength and mechanical properties, but because its alloy composition thing aluminium, v element can form ion with human body generation chemical reaction, be considered to relevant with the generation of Alzheimer's disease as aluminum ion, and vanadium ion has cytotoxicity, may produce detrimentally affect to tissue, therefore this Ti-6Al-4V titanium alloy also is applied to give birth to doctor's material field as the material use of body implant, in order to avoid the stripping and to cell and organize toxigenicity injury in organism of aluminium or vanadium ion, even cause the generation of the various chronic diseases of human body.
Therefore, be necessary titanium alloy constituent and the material of Development of New Generation really, to replace existing pure titanium or titanium alloy constituent.
Summary of the invention
The present invention is the above-mentioned shortcoming of improvement, so that a kind of Ti-Cu-Sn titanium alloy constituent to be provided, by add the composition of tin and copper in this titanium alloy, forms high performance and nano structure, strengthens the mechanical properties of titanium alloy.
The present invention's time purpose provides a low-melting Ti-Cu-Sn titanium alloy constituent, to reduce the rate of oxidation in the course of processing.
Still a further object of the present invention provides an avirulent Ti-Cu-Sn titanium alloy constituent, and has the good biological compatibility, for being applied to give birth to doctor's material field.
Another purpose of the present invention provides the Ti-Cu-Sn titanium alloy constituent of a high strength, high rigidity, to reduce the processing difficulties degree.
A kind of Ti-Cu-Sn titanium alloy of the present invention constituent comprises by weight percentage 0.1%~15% copper, 0.1%~20% tin and 79.9%~99.8% titanium.
Preferably, this Ti-Cu-Sn titanium alloy constituent is the Ti-7Cu-XSn alloy, and the X weight percent is 0.1%~15%.
Preferably, this Ti-Cu-Sn titanium alloy constituent is the Ti-7Cu-5Sn alloy.
Preferably, this Ti-Cu-Sn titanium alloy constituent comprises palladium, molybdenum, platinum, chromium, tantalum or its hybrid alloys in addition, and its weight percent is 0.1%~3%.
Whereby, Ti-Cu-Sn titanium alloy constituent of the present invention can form high performance and nano structure, and mechanical properties is better than general commercial pure titanium, has characteristics such as high strength, low elastic modulus so and abrasion performance, promotes the titanium alloy processibility and reduces the cutting tool abrasion; Moreover Ti-Cu-Sn titanium alloy constituent of the present invention has characteristics such as nontoxicity and bio-compatibility be good in addition, can be applicable to give birth to doctor's material make; Moreover the interpolation of this copper and tin can reduce the titanium alloy fusing point, and reduces rate of oxidation.
Description of drawings
Fig. 1 a is the optical microscopy map of the micro texture of Ti-Cu-Sn titanium alloy constituent of the present invention.
Fig. 1 b is the scanning electron microgram of the micro texture of Ti-Cu-Sn titanium alloy constituent of the present invention.
Fig. 2 a is the optical microscopy map of the micro texture of another Ti-Cu-Sn titanium alloy constituent of the present invention.
Fig. 2 b is the scanning electron microgram of the micro texture of another Ti-Cu-Sn titanium alloy constituent of the present invention.
Embodiment
For above-mentioned and other purpose, feature and advantage of the present invention can be become apparent, preferred embodiment of the present invention cited below particularly is described in detail below:
Ti-Cu-Sn titanium alloy constituent of the present invention mainly is the composition that adds copper and tin in titanium (Ti) metal, reduces the fusing point of whole titanium metal and improves material hardness and mechanical properties with the interpolation by this copper (Cu) and tin (Sn) metal.
Ti-Cu-Sn titanium alloy constituent of the present invention is made by following manner:
Ti-Cu-Sn titanium alloy constituent of the present invention is prior under the vacuum environment, make titanium, copper and tin metal fusing with high temperature after, become the molten soup of even titanium-copper-tin alloy, and casting advances to be scheduled to separate out titanium and reach Jie's metallographic phase mutually in process of setting in the mold.In more detail, the titanium-copper after this fusion-tin alloy is formed in process of setting, during through zero pour, will prior to solidify nucleation, (Sn, Cu) phase are called β-Ti (Sn grow up to form body-centred structure β-Ti of solid solution Sn and Cu, and Jie's metallographic phase of nano level Ti3Sn Cu).
Then, when dropping to 835~882 ℃ of transition temperatures (this transition temperature is decided according to the difference of forming the metal proportioning) along with temperature, β-Ti (Sn of this solid solution tin and copper, Cu) will change into solid solution tin six side's close-packed structures α-Ti (Sn) and separate out into (Ti, Sn) Jie's metallographic phase of 2Cu.Wherein, the tin solid solution can cause lattice distortion effect effectively, and increase difference row density in the α-Ti of six side's close-packed structures (Sn) phase, becomes the solution strengthening effect.Its two, nano level Jie Ti3Sn metal is on good terms to be become and separate out (Ti, the Sn) nucleation site of Jie's 2Cu metallographic phase, and then promote to separate out approximate nano level (Ti, Sn) Jie's 2Cu metallographic phase.As adding the micro texture of the Ti-7Cu-5Sn of 5wt% tin, it can make Ti2Cu reach nano level, and is represented as Fig. 2 b.So, the aforementioned Jie's Ti3Sn metallographic phase that produces can impel Jie's Ti2Cu metallographic phase to grow into nano level crystalline phase in this stage, can promote the density of this Ti2Cu crystalline phase, make Ti-Cu-Sn titanium alloy constituent of the present invention in solidifying the back for having nano level weave construction, the high-intensity titanium-copper of high mechanical properties kenel-Xi ternary titanium alloy alloy.Therefore the present invention's solution strengthening that can increase titanium-copper-tin alloy acts on and improves the amount of separating out of nano level Jie's metal mutually, and then promotes the bulk strength of Ti-Cu-Sn titanium alloy constituent of the present invention.
Therefore, Ti-Cu-Sn titanium alloy constituent of the present invention includes by weight percentage 0.1%~15% copper, 0.1%~20% tin and as the titanium of equilibrium phase 79.9%~99.8%.Wherein, the interpolation of this copper and tin is to be used to separate out jointly in the titanium alloy process of setting tin element of solution strengthening to reach nano level Jie metallographic phase mutually in the pure titanium of α-Ti (Sn); Moreover the interpolation of this tin can increase the solution strengthening of titanium as described above and impel Jie's Ti2Cu metallographic phase to separate out becomes nano level crystalline phase, therefore can increase the bulk strength of titanium alloy; Moreover the interpolation of this copper and tin also can be conducive to the carrying out of following process processing procedure in order to high-melting-point and the snappiness modulus that reduces pure titanium.And Ti-Cu-Sn titanium alloy constituent of the present invention may be to the toxigenous material of cell just like aluminium or vanadium etc. owing to not containing, has splendid bio-compatibility, therefore can further be applied to the preparation of living doctor's materials such as body implant, and do not have organism not produced dysgenic doubt.
Wherein, in the Ti-Cu-Sn titanium alloy constituent of the present invention, the content of this copper metal is if be higher than 15wt%, and then may form too much Jie's Ti2Cu metallographic phase becomes embrittlement and be difficult to shape; If be lower than 0.1wt%, then the ratio of Jie's metallographic phase of this nano level Ti2Cu is not high, and is comparatively limited to the effect that promotes whole titanium alloy intensity and hardness.
And the content of this tin metal is if be higher than 20wt%, and then may form too much Jie's Ti-Sn metallographic phase becomes embrittlement and be difficult to shape; If be lower than 0.1wt%, then the content of the α-Ti of solid solution tin (Sn) phase is lower, possibly can't effectively impel Jie's Ti2Cu metallographic phase to grow into nano level crystalline phase, and is therefore also not good to the effect that promotes whole titanium alloy intensity and hardness.
In addition, also can optionally add 1%~3% palladium (Pd), 1%~3% molybdenum (Mo), 1%~3% platinum (Pt), 1%~3% zirconium (Zr) or 1%~3% tantalum compositions such as (Ta) in the Ti-Cu-Sn titanium alloy constituent of the present invention on demand, to promote solidity to corrosion and the mechanical properties of alloy by palladium, platinum and tantalum, promote the stability of alloy β phase by avirulent molybdenum and zirconium, and increase ductility and mechanical properties.
For confirming that Ti-Cu-Sn titanium alloy constituent of the present invention has aforementioned excellent nanoscale structures and organizes characteristics such as mechanical properties excellence, other knows clearly the character of the Ti-Cu-Sn titanium alloy constituent of the different proportionings of the present invention and lists in down, and cooperates shown in Fig. 1 a, Fig. 1 b and Fig. 2 a, Fig. 2 b.Wherein, Fig. 1 a and Fig. 1 b are all the figure of Ti-7Cu titanium alloy micro texture, and Fig. 1 a is optical microscopy map (OM); Fig. 1 b then is scanning electron microgram (SEM).Fig. 2 a and Fig. 2 b are the figure of Ti-7Cu-5Sn titanium alloy micro texture, and Fig. 2 a is optical microscopy map (OM); Fig. 2 b then is scanning electron microgram (SEM).
Shown in Fig. 1 a, Fig. 1 b and Fig. 2 a, Fig. 2 b, Fig. 1 a and Fig. 1 b are all the figure of Ti-7Cu titanium alloy micro texture, and the grey among its Fig. 1 b is α-Ti substrate, and white is Jie's Ti2Cu metallographic phase; It is organization chart that Fig. 2 a and Fig. 2 b then are all the Ti-7Cu-5Sn titanium alloy SEM that adds 5wt% tin again, and the white among its Fig. 2 b is Jie's Ti2Cu metallographic phase, and it is refined into nano level Ti2Cu because tin element makes an addition to titanium alloy.
Moreover the described Ti-7Cu-1Sn of table one refers to contain in the titanium alloy copper of 7wt%, the tin of 1wt% and the titanium metal that reaches balance, and all the other indicate, and the rest may be inferred, and the Ti-Cu-Sn titanium alloy constituent of following each embodiment all is made with aforementioned manner.
Table one: the character of the Ti-Cu-Sn titanium alloy constituent of the different proportionings of the present invention.
Figure BDA00002744149300061
Can be learnt by table one, Ti-Cu-Sn titanium alloy constituent of the present invention is owing to have comparatively fine and close crystalline phase as described above, therefore have higher hardness and mechanical properties really compared to existing pure titanium, have lower reduction coefficient of elasticity compared to pure titanium, be conducive to the carrying out of following process processing procedure.Wherein, other adds platinum, palladium and tantalum can form one deck oxide film in Ti-Cu-Sn titanium alloy constituent surface, and then increases the solidity to corrosion of Ti-Cu-Sn titanium alloy constituent, and can improve hardness and the mechanical properties of Ti-Cu-Sn titanium alloy constituent.
In sum, Ti-Cu-Sn titanium alloy constituent of the present invention is by aforementioned processing procedure, can be covert by copper and the formed secondary of the common interpolation of tin, make titanium alloy have mechanism for intensifying such as solution strengthening, precipitation strength, can impel Jie's Ti2Cu metal of being separated out by interpolation copper metal to grow into approximate nano level crystalline phase, therefore can further strengthen integral hardness and the intensity of titanium alloy, be conducive to follow-up machining, promote the processibility of this constituent, and then slow down the wearing and tearing of cutting tool.
The composition of Ti-Cu-Sn titanium alloy constituent of the present invention by adding this copper and tin can be in process of setting forms with titanium stablizes Jie's metallographic phase, can reduce the fusing point of whole titanium alloy simultaneously, therefore can slow down rate of oxidation.
Ti-Cu-Sn titanium alloy constituent of the present invention has good biological compatibility and no cytotoxicity, therefore can be applicable to give birth to doctor's material.For example the embodiment of the invention is made a platform tooth with the moiety of this titanium, copper and tin or is implanted and give birth to doctor's material, makes this platform tooth have preferable bio-compatibility and can not disengage harmful toxicity, so as to reaching the wear-resisting effect that undermines resistance to acid attack etc.
Just above-described, only be preferred embodiment of the present invention, when not limiting the scope of the present invention with this; So all simple equivalent of doing according to the present patent application claim and description of the present invention change and modify, all should still belong in the scope that patent of the present invention contains.

Claims (4)

1. a Ti-Cu-Sn titanium alloy constituent is characterized in that, comprises:
0.1%~15% copper by weight percentage, 0.1%~20% tin and 79.9%~99.8% titanium.
2. Ti-Cu-Sn titanium alloy constituent as claimed in claim 1 is characterized in that, this Ti-Cu-Sn titanium alloy constituent is the Ti-7Cu-XSn alloy, and wherein, the weight percent of X is 0.1%~15%.
3. Ti-Cu-Sn titanium alloy constituent as claimed in claim 1 is characterized in that, this Ti-Cu-Sn titanium alloy constituent is the Ti-7Cu-5Sn alloy.
4. Ti-Cu-Sn titanium alloy constituent as claimed in claim 1 is characterized in that, it is 0.1%~3% palladium, molybdenum, platinum, chromium, tantalum or its hybrid alloys that this Ti-Cu-Sn titanium alloy constituent comprises weight percent in addition.
CN201310016723.6A 2012-02-07 2013-01-16 Ti-Cu-Sn titanium alloy composition Expired - Fee Related CN103255316B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109136649A (en) * 2018-10-12 2019-01-04 广州宇智科技有限公司 A kind of novel Burn-Resistant Titanium Alloy of the liquid complex oxide film type containing Li and Sn
CN109778007A (en) * 2019-03-14 2019-05-21 广西大学 A kind of Ti-Cr-Sn alloy bone material and preparation method thereof

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JPS5051011A (en) * 1973-09-05 1975-05-07
JPS59126739A (en) * 1983-01-11 1984-07-21 Ikuo Okamoto Quickly liquid-cooled alloy foil strip for brazing
RU2016114C1 (en) * 1991-05-24 1994-07-15 Троицкий Вадим Николаевич Caked alloy on titanium-base, and a method of its making
EP1046722A1 (en) * 1999-04-23 2000-10-25 Terumo Kabushiki Kaisha Ti-Zr type alloy and medical appliances formed thereof
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109136649A (en) * 2018-10-12 2019-01-04 广州宇智科技有限公司 A kind of novel Burn-Resistant Titanium Alloy of the liquid complex oxide film type containing Li and Sn
CN109778007A (en) * 2019-03-14 2019-05-21 广西大学 A kind of Ti-Cr-Sn alloy bone material and preparation method thereof
CN109778007B (en) * 2019-03-14 2020-07-28 广西大学 Ti-Cr-Sn alloy orthopedic material and preparation method thereof

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