Summary of the invention
The purpose of this invention is to provide a kind of good biocompatibility, corrosion resistance excellent, have the intensity of 600～900Mpa and have good comprehensive mechanical properties concurrently and the tooth section medical titanium alloy of technological forming performance, to overcome the deficiencies in the prior art, for a kind of dental material of the novel replacement is provided clinically.
Technical solution of the present invention is: a kind of tooth section medical titanium alloy, it is characterized in that it is made up of titanium (Ti), zirconium (Zr), palladium (Pd), the shared weight percent of each component is as follows: zirconium (Zr): (5～25) %, palladium (Pd): (0.1～0.2) %, titanium (Ti): surplus.
The shared weight percent of described each component can be: zirconium (Zr): (13～17) %, palladium (Pd): (0.14～0.16) %, titanium (Ti): surplus.
The present invention compared with prior art has following advantage:
1, complete compatible Zr, Pd of selection and human body has excellent biological compatibility as alloying element.
2, Young's modulus low (80～90Gpa), lower by 10～20% than Ti6Al4V.
3, owing to contain negative active component Pd, have excellent corrosion resistance nature, in normal saline solution, erosion rate is less than 0.0001mm/a.
4, better technological forming, the δ of as-heat-treated condition: 18～25%, : 45～55%, exceed more than 50% low 150～200 ℃ of hot processing temperature than Ti6Al4V alloy.
5, great variety of goods can be produced various metallurgic products such as plate, rod, silk, line, pipe, forging, foundry goods.
Embodiment:
Embodiment 1:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 84.8 kilograms of titaniums (Ti), 15 kilograms of zirconiums (Zr), 0.15 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 2:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 74.8 kilograms of titaniums (Ti), 25 kilograms of zirconiums (Zr), 0.2 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 3:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 94.85 kilograms of titaniums (Ti), 5 kilograms of zirconiums (Zr), 0.15 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 4:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 79.9 kilograms of titaniums (Ti), 20 kilograms of zirconiums (Zr), 0.1 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 5:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 94.9 kilograms of titaniums (Ti), 5 kilograms of zirconiums (Zr), 0.1 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 6:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 74.83 kilograms of titaniums (Ti), 25 kilograms of zirconiums (Zr), 0.17 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Embodiment 7:
With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 89.8 kilograms of titaniums (Ti), 10 kilograms of zirconiums (Zr), 0.2 kilogram of palladium (Pd).Carry out secondary vacuum electric arc consumable smelting behind the compacting electrode, 900～1050 ℃ of coggings of ingot casting, 800～900 ℃ are processed into alloy bar, and total variation is controlled between 65～95%.Above-mentioned complete processing gets final product by the method for prior art.
Because of containing small amount of impurities in the raw material, the amount of titanium can not be definite fully, thus in claims titanium be chosen as surplus.
Alloy material of the present invention can be used as materials such as mouth cavity orthodontic, plantation, reparation, also can be used as surgery implantation, spectacle frame, spring, corrosion resistant material.
Alloy material mechanical property of the present invention sees Table 1, and corrosion resisting property sees Table 2, relatively sees Table 3 with existing medical titanium alloy performance.
The mechanical property (bar) of table 1 invention alloy
| Invention alloy numbering | State | Mechanical property |
| σb (Mpa) | σ0.2 (Mpa) | δ (％) | (％) | E (Gpa) |
| A | Annealing | 600 | 550 | 25 | 55 | 95 |
| B | Annealing | 650 | 600 | 23 | 52 | 93 |
| C | The processing attitude | 900 | 850 | 10 | / | 89 |
| Annealing | 700 | 650 | 21 | 49 | 89 |
| D | Annealing | 750 | 700 | 19 | 46 | 84 |
| E | Annealing | 800 | 750 | 18 | 45 | 80 |
Table 2 invention corrosion resistance of alloy
37 ℃ of simulated body fluids (physiological saline)
| Alloy | Invention alloy TZP | Ti6Al4V | Ti |
| The corrosion characteristics parameter | Corrosion potential Ecorr (v) | -0.190 | -0.265 | -0.285 |
| Passivation current density IO(MA/cm2) | 15 | 268 | 322 |
Table 3 invention alloy and existing similar alloy performance are relatively
| Alloy | State | σb(Mpa) | σ0.2 (Mpa) | δ (％) | (％) | ak KJ/m2 | E (Gpa) | The source |
| Invention alloy TZP | Annealing | 600～800 | 500～700 | 18 | 45 | 538 | 80～95 | Actual measurement |
| The processing attitude | 900 | 800 | 10 | 25 | / | 80～95 | Actual measurement |
| Ti6Al 4V | Annealing | 895 | 825 | 10 | 25 | 392 | 106 | GB13810-97 |
| Ti(TA2) | Annealing | 440 | 320 | 18 | 30 | / | 112 | GB13810-97 |