CN1570167A - Medical titanium alloy for teeth outer part - Google Patents

Abstract

The invention discloses an alloy, especially a bio-medical titanium alloy for teeth. The alloy is used for clinical oral rehabilitation, planting and remedy. The alloy is characterized in that the alloy consists of Ti, Zr, and Pd, wherein the content of the components is as follows (by weight): Zr:5-25%, Pd:0.1-0.2%, Ti: the rest. The alloy has the following advantages: 1. good biocompatibility : selecting Zr and Pd as the alloy elements; 2. Low elastic modulus (80-90Gpa); 3. excellent corrosion-resisting property: containing negative active constituent Pd; 4. good technological formability.

Description

Tooth section medical titanium alloy

Technical field

The present invention relates to a kind of alloy material, particularly a kind of tooth section biological medical titanium alloy is mainly used in clinical Oral Repair, plantation, just abnormal etc.

Technical background

Along with The development in society and economy, the raising of national life level and the aging of social population, market is obvious to the dental material demand growth impetus.Clinical investigation shows that titanium is just abnormal as tooth section, the demand of reparation, planting material is with 20～30% speed increment, becoming a class in the tooth section metallic substance has the novel material of development and application prospect most, but because titanium industry only has 50 years of development history, can be for the clinical tooth section that provides use the titanium alloy kind very little, what use at present mainly is commercial pure titanium and Ti6Al4V alloy.The intensity of pure titanium is still inadequate, and the Ti6Al4V alloy strength is higher, and has problems such as the toxicity of vanadium, processing performance is poor, biocompatibility is undesirable.Therefore research and develop biology, processing performance, the better tooth of comprehensive mechanical property section medical titanium alloy and become the target that countries in the world material supply section scholar chases.

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.

Embodiment 8:

With titanium sponge, zirconium sponge, palladium powder is the preparation of raw material alloy material, and the designing quality of each component is respectively: 81.89 kilograms of titaniums (Ti), and 17 kilograms of zirconiums (Zr), 0.16 kilogram of palladium (Pd), gross weight is a double centner.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(TA ???2)	Annealing	???440	????320	???18	???30	???/	?????112		?GB13810-9 ?????7

Claims (2)

1, a kind of tooth section medical titanium alloy is characterized in that it is made up of titanium (Ti), zirconium (Zr), palladium (Pd), and each set of dispense is such as down:

The title weight percent

Zirconium (Zr) (5～25) %

Palladium (Pd) (0.1～0.2) %

Titanium (Ti) surplus.

2, tooth according to claim 1 section medical titanium alloy, it is characterized in that: described each set of dispense ratio is:

The title weight percent

Zirconium (Zr) (13～17) %

Palladium (Pd) (0.14～0.16) %

Titanium (Ti) surplus.