Summary of the invention
The technical problem solved: dental alloys material require has very good biocompatibility, higher hardness, erosion-resisting performance, the hardness of common dental alloy material and other mechanical propertys are lower, biocompatibility is also poor, therefore needs a kind of new dental croloy material and preparation method thereof.
Technical scheme: in order to solve the problem, the invention discloses a kind of dental croloy material and preparation method thereof.Described croloy material comprises the material of following weight:
Copper 9wt%-17wt%,
Calcium 5wt%-16wt%,
Silicon 3wt%-9wt%,
Titanium 4.5wt%-9.5wt%,
Nickel 8wt%-16wt%,
Antimony 3.5wt%-8wt%,
Neodymium 0.3wt%-0.9wt%,
Surplus is chromium.
Further, described a kind of dental croloy material, comprises the material of following weight:
Copper 11wt%-15wt%,
Calcium 8wt%-12wt%,
Silicon 5wt%-7wt%,
Titanium 6.5wt%-8.5wt%,
Nickel 10wt%-13wt%,
Antimony 4.5wt%-6wt%,
Neodymium 0.5wt%-0.8wt%,
Surplus is chromium.
A preparation method for dental croloy material, comprises the following steps:
(1) get according to following weight percent that copper is 9wt%-17wt%, calcium is 5wt%-16wt%, silicon is 3wt%-9wt%, titanium is 4.5wt%-9.5wt%, nickel is 8wt%-16wt%, antimony is 3.5wt%-8wt%, neodymium is 0.3wt%-0.9wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature of 30-50 DEG C/min to 960-1070 DEG C, carry out high-temperature vacuum melting, vacuum tightness is 50-400Pa, and smelting time is 4-6h;
(3) temperature is reduced to 550-590 DEG C according to the rate of temperature fall of 20-40 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 35-55 DEG C/min again, prepare dental croloy material.
The preparation method of described a kind of dental croloy material, raised temperature to 1020 DEG C in step (2), carries out high-temperature vacuum melting.
The preparation method of described a kind of dental croloy material, in step (2), smelting time is 5h.
The preparation method of described a kind of dental croloy material, in step (2), temperature rise rate is 40 DEG C/min.
The preparation method of described a kind of dental croloy material, reduces temperature to 570 DEG C according to the rate of temperature fall of 30 DEG C/min in step (3).
The preparation method of described a kind of dental croloy material, copper is 11wt%-15wt%, calcium is 8wt%-12wt%, silicon is 5wt%-7wt%, titanium is 6.5wt%-8.5wt%, nickel is 10wt%-13wt%, antimony is 4.5wt%-6wt%, neodymium is 0.5wt%-0.8wt%, surplus is chromium.
Beneficial effect: the Vickers' hardness of dental croloy material of the present invention, tensile strength, elongation at break are higher, also there is good erosion resistance and good biocompatibility simultaneously, nontoxicity, properties is significantly higher than common dental alloys material.In croloy material of the present invention after adding antimony and neodymium, its properties, significantly higher than the alloy material not adding antimony and neodymium, creates the performance variation of highly significant.
Embodiment
Embodiment 1
(1) get according to following weight percent that copper is 17wt%, calcium is 5wt%, silicon is 3wt%, titanium is 9.5wt%, nickel is 8wt%, antimony is 8wt%, neodymium is 0.9wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 1070 DEG C of 30 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 400Pa, and smelting time is 6h;
(3) temperature to 590 DEG C is reduced according to the rate of temperature fall of 40 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 55 DEG C/min again, prepare dental croloy material.
Embodiment 2
(1) get according to following weight percent that copper is 9wt%, calcium is 16wt%, silicon is 9wt%, titanium is 4.5wt%, nickel is 16wt%, antimony is 3.5wt%, neodymium is 0.3wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 960 DEG C of 50 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 50Pa, and smelting time is 4h;
(3) temperature to 550 DEG C is reduced according to the rate of temperature fall of 20 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 35 DEG C/min again, prepare dental croloy material.
Embodiment 3
(1) get according to following weight percent that copper is 11wt%, calcium is 8wt%, silicon is 7wt%, titanium is 8.5wt%, nickel is 13wt%, antimony is 4.5wt%, neodymium is 0.8wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 960 DEG C of 30 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 400Pa, and smelting time is 6h;
(3) temperature to 550 DEG C is reduced according to the rate of temperature fall of 20 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 55 DEG C/min again, prepare dental croloy material.
Embodiment 4
(1) get according to following weight percent that copper is 15wt%, calcium is 12wt%, silicon is 5wt%, titanium is 6.5wt%, nickel is 10wt%, antimony is 6wt%, neodymium is 0.5wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 1070 DEG C of 50 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 50Pa, and smelting time is 4h;
(3) temperature to 590 DEG C is reduced according to the rate of temperature fall of 40 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 35 DEG C/min again, prepare dental croloy material.
Embodiment 5
(1) get according to following weight percent that copper is 13wt%, calcium is 10wt%, silicon is 6wt%, titanium is 7.5wt%, nickel is 11wt%, antimony is 5wt%, neodymium is 0.6wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 1020 DEG C of 30 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 200Pa, and smelting time is 5h;
(3) temperature to 570 DEG C is reduced according to the rate of temperature fall of 30 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 45 DEG C/min again, prepare dental croloy material.
Comparative example 1
(1) get according to following weight percent that copper is 9wt%, calcium is 16wt%, silicon is 9wt%, titanium is 4.5wt%, nickel is 16wt%, surplus is chromium;
(2) dropped in vacuum melting furnace by the material of step (1), according to the temperature rise rate raised temperature to 960 DEG C of 50 DEG C/min, carry out high-temperature vacuum melting, vacuum tightness is 50Pa, and smelting time is 4h;
(3) temperature to 550 DEG C is reduced according to the rate of temperature fall of 20 DEG C/min, insulation 2h;
(4) be reduced to room temperature according to the rate of temperature fall of 35 DEG C/min again, prepare dental croloy material.
Comparative example 2
License notification number is the invention of CN101693965:
Nickel is 66.4wt%, chromium 8.3wt%, copper 5.8wt%, tin 5wt%, molybdenum 4.3wt%, titanium 3.3wt%, silicon 2.8wt%, iron 1.9wt%, manganese 1.1wt%, carbon 1.1wt%.Dental alloy material is prepared after vacuum melting and vacuum pouring.
The Vickers' hardness of the alloy material of embodiment 1 to 5, comparative example 1 to 2, tensile strength, elongation at break are as follows:
Dental Co-base alloy material of the present invention possesses very good Vickers' hardness, tensile strength and elongation at break.Can be used as alloy material in medical-dental material etc., improve its wearing quality.