CN103205594B - Palladium-silver alloy material for dental department - Google Patents
Palladium-silver alloy material for dental department Download PDFInfo
- Publication number
- CN103205594B CN103205594B CN201310163210.8A CN201310163210A CN103205594B CN 103205594 B CN103205594 B CN 103205594B CN 201310163210 A CN201310163210 A CN 201310163210A CN 103205594 B CN103205594 B CN 103205594B
- Authority
- CN
- China
- Prior art keywords
- alloy
- silver
- palladium
- weight percent
- alloy material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Dental Preparations (AREA)
Abstract
The invention discloses palladium-silver alloy for repairing an oral cavity. Alloy ingredients are optimized by an alloy material. Compared with the prior art, the obtained material has the advantages of good mechanical property, good corrosion resistance, low sensitization, and beautiful color and luster under the premise of not reducing the alloy property and clinical use effect; and the cost is just 1/4 to 1/3 of gold alloy.
Description
Technical field
The invention belongs to dental prosthetic material field, relate to a kind of palladium-silver alloy, particularly a kind of casting alloy for making baking-ceramic tooth dummy or metal restoration.
Background technology
After being introduced into dental prosthetic technique from 20 beginning of the century precision casting technologies, alloy material is more and more extensive in the application of dental restorative area, is still Oral Repair application material at most the most widely so far.Dental fear can be divided into noble metal casting alloy, semi-precious metal casting alloy, low noble metal alloy and base metal casting alloy according to its bullion content.Bullion content is then classified as precious metal alloys more than 85%, and semi-precious metal bullion content is between 60% ~ 85%, and the bullion content of low noble metal casting alloy, between 25% ~ 60%, does not then belong to non-noble metal alloy containing noble metal component.
Dentistry height precious metal alloys mainly palau and plation, because of the castibility that it is good, noble color and luster, excellent erosion resistance and mechanical property and the alloy material that becomes the earliest; Base metal is cobalt chromium and nichrome mainly, and alloy is cheap, but there is corrosion-resistant and poor biocompatibility, and patient waits shortcomings to metal ion allergy; Polarium and palladium-silver alloy bullion content lower, therefore be called as half noble alloy, wherein palladium-silver alloy is similar to high gold-content alloy in physics, machinery, chemical property etc., and some performance is also better than au-alloy, and price is only 1/4 ~ 1/3 of au-alloy; And compared with non-noble metal alloy, its biocompatibility, corrosion resistance are good, moderate, be therefore considered to ideal dental prosthetic material.But still there are some defects in existing palladium-silver alloy material, such as when being applied in baking-ceramic tooth dummy due to silver easily sulfuration in the process making porcelain layer, usually cause porcelain variable color thus affect the color and luster of dummy and attractive in appearance.
In the process of dental prosthetic alloy development, three factors have impact on its clinical application, comprise price, physical and mechanical properties (as Young's modulus, hardness, tensile strength etc.), biocompatibility (corrosion behavior, cytotoxicity etc.).Along with the reach of science and social progress, corrosion behavior wherein more comes into one's own, and becomes the key factor of restriction dental alloy application.Dental alloy is exposed in variable oral cavity physical environment (temperature, stress), chemical environment (saliva, salt, liquid, medicine etc.) and coenocorrelation (being bonded to the bacterial plaque on dummy), and corrosion in various degree all can occur.But the extent of corrosion of various alloy and the harm of human body is differed greatly.The fear that the corrosion of dental alloy can cause aesthetic properties and physicals to reduce, taeniae telarum carried out to biostimulation, even cause the public.In order to improve erosion resistance and the ductility of palladium-silver alloy, usually a certain amount of gold can be added at palladium-silver alloy, but the increase adding and can cause cost of gold, thus limit its application.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, provide a kind of palladium-silver alloy used for stomatological repair, this alloy material is compared with current material, under the prerequisite not reducing alloy property and Clinical practice effect, there is good mechanical property, good erosion resistance and low irritability, color and luster is attractive in appearance, and cost is only 1/4 ~ 1/3 of au-alloy.
The present invention is achieved through the following technical solutions:
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 51.1 ~ 59.9%, silver (Ag) 24.1 ~ 28.8%.In traditional palladium-silver alloy, when silver content is more than 30%, obvious sulfuration can be produced in the process making porcelain layer, cause facing porcelain of its surface sintering to present dark green thus affect the color and luster of dummy and attractive in appearance; The present invention can effectively suppress sulfuration to ensure the color and luster of dummy and attractive in appearance by the content of adjustment silver, especially can avoid sulfuration completely when the weight percent of silver is less than or equal to 27.5%.In minimizing alloy while silver content, for ensureing that alloy ductility and mechanical property must increase the content of palladium accordingly, this will cause the increase of cost of alloy, the alloy material that the present invention is obtained by the content of structure adjusting palladium-silver not only has lower cost but also have good mechanical property, effectively can also suppress sulfuration.
As optimal way, above-mentioned alloy contains the composition of following weight percent: palladium (Pd) 51.1 ~ 59.9%, silver (Ag) 24.1 ~ 28.8%, indium (In) 9.1 ~ 11.8%.The indium of this content can form the moderate oxide film of thickness at material surface, thus obviously improves the golden porcelain bonding properties of alloy, and it is excessive and cause alloy melting point too low that its content too much understands oxide thickness, and fragility increases; Then oxide thickness is inadequate very little for content, combines all have disadvantageous effect to golden porcelain.
As optimal way, above-mentioned alloy can also be the gold (Au) of 1.0 ~ 1.5% containing weight percent.The gold of this content can ensure that the ductility of alloy material and erosion resistance and biocompatibility can effectively be controlled cost again.
As optimal way, above-mentioned alloy can also be one or more elements be selected from platinum (Pt), rhodium (Rh) or iridium (Ir) of 0.8 ~ 2.0% containing weight percent.Effectively carry heavy alloyed fusing point by adding such alloying element, the fusing point of alloy is controlled more than 980 DEG C.
As optimal way, above-mentioned alloy can also be the gallium (Ga) of 1.6 ~ 3.2% containing weight percent.Gallium can form AgGa phase functional phase equal to PdGa with silver and palladium respectively, can also materials microstructure be made evenly, also can produce oxide film at material surface thus improve its golden porcelain bonding properties simultaneously, Young's modulus and the hardness of material can also be improved simultaneously, with indium with the use of time better effects if; But the membership that adds of gallium reduces the fusing point of material more significantly and increases the fragility of material, and therefore need to control its add-on, the weight percent sum of gallium and indium should be no more than 15%.
As optimal way, described alloy contains the composition of following weight percent: palladium (Pd) 57.3%, silver (Ag) 28.5%, gold (Au) 1.1%, platinum (Pt) 1.0%, indium (In) 10.1%, gallium (Ga) 2.0%.The alloy material with this proportioning has best over-all properties.
Present invention also offers the production method of above-mentioned palladium-silver alloy material, it is characterized in that: comprise the following steps:
(1) prepare burden: component proportion is prepared burden by weight;
(2) melting: the raw material prepared is put into smelting furnace and carries out melting;
(3) pour into a mould: melted point molten metal is poured in mould, obtained just base;
(4) anneal: anneal is carried out to first base;
(5) rolling: by the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
As optimal way, in the above-mentioned methods, described anneal nitrogen and hydrogen mixed gas protected under carry out.Traditional annealing process generally carries out under nitrogen protection for avoiding material oxidation; but nitrogen protection cannot get rid of oxygen completely, by adding a small amount of hydrogen in protective atmosphere, effectively oxygen can be eliminated; thus avoid the oxidation of material, improve the luminance brightness of material surface.
As optimal way, in the above-mentioned methods, described melting and casting process carry out all under vacuum.
Another object of the present invention is to the application that a kind of above-mentioned palladium-silver alloy material is provided, it is characterized in that: use it for and make the PFM of dentistry fixed and repaired and the bottom of bridge and/or crane span structure, or separately for making dental casting metal restoration.
Beneficial effect of the present invention:
Palladium (Pd) stable chemical nature can play crystal grain thinning in the alloy, improves the effects such as alloy corrosion, and can put forward heavy alloyed mechanical property while maintenance ductility; Silver (Ag) ductility is strong and chemical stability is high, can play the effect increasing alloy ductility, and low-alloyed cost can fall in a certain proportion of silver simultaneously.In existing dental palladium-silver alloy, the content of silver is all higher.When for baking-ceramic tooth dummy, higher silver content easily makes alloy occur sulfuration in the process making porcelain layer, causes facing porcelain of its surface sintering to present dark green thus affects the color and luster of dummy and attractive in appearance.The present invention is by adjusting the content of palladium (Pd) and silver (Ag), while ensureing alloy ductility and mechanical property, inhibit the sulfuration of silver (Ag), improve the sulfidation-resistance of alloy, improve the color and luster of planting body, improve liquidus temperature simultaneously, improve the castability of alloy.
Gold (Au) ductility is good, and stable chemical nature, adds in palladium-silver alloy and can put forward heavy alloyed ductility and the corrosion resistance improving alloy.Therefore in the palladium-silver alloy of existing better performances, all a certain amount of gold (Au) can be added, but because gold is expensive, the cost of alloy is higher, the present invention is by the proportioning of each alloying element of adjustment, in the maintenance ductility of alloy and the basis of erosion resistance, decrease gold (Au) content, thus reduce cost.
The fusing point of gallium (Ga) is, 29.78 ° of C liquid galliums almost can soak the surface of all substances, have excellent casting performance, and gallium can be diffused into rapidly in the lattice of some metal, at high temperature can generate alloy with many metals.Gallium is harmless, is a kind of safe metal, has good biocompatibility.Indium (In) fusing point is 156.61 DEG C, can form alloy with many metals, and between normal temperature to fusing point, the oxygen in indium and air reacts, and can form very thin oxide film on surface.The present invention adds a certain proportion of In and Ga in the alloy, obviously can be improved the golden porcelain bonding properties of alloy by both cooperations, and the inorganic porcelain layer that alloy is sintered with its surface is combined more firm.
Platinum (Pt) matter is soft, has ductility, has very high chemical stability, fusing point is 1772 DEG C, and the present invention adds a small amount of platinum in the alloy, significantly improves the fusing point of palladium-silver alloy, improve alloy yield strength, reduce the alloy coefficient of expansion, and improve the corrosion resistance nature of alloy.
Palladium-silver alloy of the present invention has good mechanical property.Yield strength >500 MPa, Metal-ceramic combining strength is 41 ~ 63.8 MPa, elastic modulus G reatT.GreaT.GT106.3 MPa, unit elongation >4%, the mechanical property of palladium-silver alloy of the present invention specifies (the 4th class superstrength alloy in ADA (ADA) standard, be 450 MPa at sclerosis state lower yield strength, unit elongation is 3%) requirement.
Palladium-silver alloy of the present invention compared with nickel chromium triangle/cobalt chromium base metal corrosion resistance nature and biocompatibility splendid.Mechanical property is more excellent compared with existing palladium-silver alloy or au-alloy etc., corrosion resistance nature and biocompatibility close, and have obvious price advantage.
Palladium-silver alloy production method of the present invention, the alloy block of about 1g can be obtained through melting, rolling, shearing etc., products obtained therefrom stable performance simple to operate, through vacuum melting and vacuum casting, alloy purity >=99.95% obtained is the dental palladium-silver porcelain alloy that current global metal purity is the highest.
Embodiment
Below in conjunction with embodiment, the invention will be further described, it should be understood that these embodiments only for the object of illustration, never limit the scope of the invention.
embodiment 1
A kind of Palladium-silver alloy material for dental department, described alloy contains the bulk composition of following weight percent: palladium (Pd) 57.6%, silver (Ag) 28.1%, surplus is other alloying elements, can be specifically at least one in the elements such as indium, gold, platinum, gallium, zinc, tin, copper, antimony, carbon, germanium, zirconium, silicon, selenium, iron, magnesium, aluminium, cobalt, titanium, iridium, rhodium.The present embodiment with 11.4% indium and 2.9% gallium exemplarily.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen protection with under nitrogen hydrogen mixeding gas protection anneal is carried out to first base respectively; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1240 DEG C, and yield strength is 503 MPa, and Vickers' hardness is 350HV, and Metal-ceramic combining strength is 57.8 MPa, and Young's modulus is 158.4MPa, and thermal expansivity is 15.2(10
-6/ K), unit elongation is 4%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, without obvious metachromatism.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.15mg/(cm
27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
The sample appearance of the lower annealing of nitrogen hydrogen mixeding gas protection is bright silver, and luminance brightness is high; The sample appearance of annealing under nitrogen protection is silver gray, and luminance brightness is lower slightly.
Comparative example 1
For comparing the impact of silver content antagonism curability, devise the composition that a kind of contrast material contains following weight percent: palladium (Pd) 54.7%, silver (Ag) 31%, indium (In) 11.4%, gallium (Ga) 2.9%.All the other treatment processs are identical with above-mentioned materials, are used for making ceramic prosthesis by gained sample, and the facing porcelain of its surface sintering presents dark green, and generation can significantly sulfuration.
embodiment 2
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 58.4%, and silver (Ag) 27.1%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature 1260 DEG C, yield strength is 511MPa, and Vickers' hardness is 338HV, and Metal-ceramic combining strength is 41.0 MPa, and Young's modulus is 106.5 MPa, and thermal expansivity is 14.8(10
-6/ K), unit elongation is 4%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur completely.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.13 mg/(cm
27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 3
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 55.7%, silver (Ag) 28.6%, and gold (Au) 1.3%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1210 DEG C, and yield strength is 501 MPa, and Vickers' hardness is 334HV, and Metal-ceramic combining strength is 41.1MPa, and Young's modulus is 106.4 MPa, and thermal expansivity is 14.6(10
-6/ K), unit elongation is 4.7%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, and obvious metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.021mg/(cm
27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 4
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 55.7%, silver (Ag) 28.6%, and gold (Au) 1.2%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1215 DEG C, and yield strength is 501 MPa, and Vickers' hardness is 336HV, and Metal-ceramic combining strength is 41.1MPa, and Young's modulus is 106.7 MPa, and thermal expansivity is 14.7(10
-6/ K), unit elongation is 4.6%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, and obvious metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.031mg/(cm
27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 5
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 55.6%, silver (Ag) 27.5%, and gold (Au) 1.4%, platinum (Pt) 0.9%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1320 DEG C, and yield strength is 510 MPa, and Vickers' hardness is 330HV, and Metal-ceramic combining strength is 41.2MPa, and Young's modulus is 108.5MPa, and thermal expansivity is 14.5(10
-6/ K), unit elongation is 4.9%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.020mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 6
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 55.9%, and silver (Ag) 26.8%, platinum (Pt) 1.8%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1360 DEG C, and yield strength is 540 MPa, and Vickers' hardness is 331HV, and Metal-ceramic combining strength is 41.7MPa, and Young's modulus is 109.3MPa, and thermal expansivity is 14.3(10
-6/ K), unit elongation is 4.2%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.16 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 7
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 59.6%, and silver (Ag) 27.5%, indium (In) 9.2%, gallium (Ga) 1.7%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1270 DEG C, and yield strength is 510 MPa, and Vickers' hardness is 333HV, and Metal-ceramic combining strength is 48.7MPa, and Young's modulus is 107.2MPa, and thermal expansivity is 14.9(10
-6/ K), unit elongation is 4.1%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.15 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 8
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 57.3%, silver (Ag) 27.5%, gold (Au) 1.0%, indium (In) 11%, gallium (Ga) 3.2%.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1210 DEG C, and yield strength is 509 MPa, and Vickers' hardness is 357HV, and Metal-ceramic combining strength is 59.6MPa, and Young's modulus is 107.2MPa, and thermal expansivity is 14.9(10
-6/ K), unit elongation is 4.5%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.035 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 9
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 57.9%, silver (Ag) 27.5%, platinum (Pt) 1.6%, indium (In) 10.3%, gallium (Ga) 2.7%.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
Gained sample liquid liquidus temperature is 1350 DEG C, and yield strength is 536 MPa, and Vickers' hardness is 344HV Metal-ceramic combining strength is 60.8MPa, and Young's modulus is 109.2MPa, and thermal expansivity is 14.6(10
-6/ K) unit elongation is 4.1%, is used for making ceramic prosthesis by gained sample, become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.051mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 10
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 57.2%, silver (Ag) 28.8%, gold (Au) 1.5%, platinum (Pt) 0.8%, indium (In) 8.5%, gallium (Ga) 3.2%.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.When described melting and casting process carry out all under vacuum, gained metal purity is 99.98%, and more antivacuum process improves more than 0.1%.
Gained sample liquid liquidus temperature is 1300 DEG C, and yield strength is 538 MPa, and Vickers' hardness is 357HV Metal-ceramic combining strength is 56.6MPa, and Young's modulus is 109.4MPa, and thermal expansivity is 14.4(10
-6/ K) unit elongation is 4.9%, is used for making ceramic prosthesis by gained sample, become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, and obvious metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.017 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 11
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 56.2%, silver (Ag) 28.0%, gold (Au) 1.8%, platinum (Pt) 1.2%, indium (In) 10.5%, gallium (Ga) 2.3%.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; Under nitrogen hydrogen mixeding gas protection, anneal is carried out to first base; By the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.When described melting and casting process carry out all under vacuum, gained metal purity is 99.98%, and more antivacuum process improves more than 0.1%.
Gained sample liquid liquidus temperature is 1310 DEG C, and yield strength is 542MPa, and Vickers' hardness is 347HV Metal-ceramic combining strength is 59.4MPa, and Young's modulus is 107.9MPa, and thermal expansivity is 14.4(10
-6/ K), unit elongation is 5.1%, is used for making ceramic prosthesis by gained sample, and become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.016 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
embodiment 12
A kind of Palladium-silver alloy material for dental department, described alloy contains the composition of following weight percent: palladium (Pd) 57.3%, silver (Ag) 28.5%, gold (Au) 1.1%, platinum (Pt) 1.0%, indium (In) 10.1%, gallium (Ga) 2.0%.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material prepared is put into smelting furnace and carries out melting; Melted point molten metal is poured in mould, obtained just base; By gained just base rolling into about the square of 1g or rectangular parallelepiped sample.When described melting and casting process carry out all under vacuum, gained metal purity is 99.98%, and more antivacuum process improves more than 0.1%.
Gained sample liquid liquidus temperature is 1310 DEG C, and yield strength is 538MPa, and Vickers' hardness is 332HV, and Metal-ceramic combining strength is 57.2MPa, and Young's modulus is 122.4MPa, and thermal expansivity is 14.6(10
-6/ K) unit elongation is 4.7%, is used for making ceramic prosthesis by gained sample, become process without the need to carrying out anti-silver-colored sulphur, product color is attractive in appearance, and obvious metachromatism can not occur.Erosion resistance is by standard method test, and after soak test, concentration of metal ions is 0.017 mg/(cm27d); Tarnish resistance is by after standard method test, and alloy surface color and gloss compare without observable difference with untested sample, biological assessment structure display material no cytotoxicity, have no Acute systemic toxicity, without sensitivity response.
The foregoing is only the preferred embodiments of the present invention, is only illustrative for the purpose of the present invention, and nonrestrictive; Those of ordinary skill in the art understand, and can carry out many changes in the spirit and scope that the claims in the present invention limit to it, amendment, and even equivalence is changed, but all will fall into protection scope of the present invention.
Claims (10)
1. a Palladium-silver alloy material for dental department, it is characterized in that, described alloy contains the composition of following weight percent: palladium (Pd) 51.1 ~ 59.9%, silver (Ag) 24.1 ~ 28.8%, indium (In) 9.1 ~ 11.8%, gallium (Ga) 1.6 ~ 3.2%, when described alloy is for making ceramic prosthesis, become process just effectively can suppress sulfuration without the need to carrying out anti-silver-colored sulphur, prevent the variable color of facing porcelain, the color and luster of guarantee dummy and attractive in appearance.
2. alloy material according to claim 1, is characterized in that, described alloy contains the composition of following weight percent: palladium (Pd) 57.6%, silver (Ag) 28.1%, indium (In) 11.4%, gallium (Ga) 2.9%.
3. alloy material according to claim 1, is characterized in that, described alloy is also the gold (Au) of 1.0 ~ 1.5% containing weight percent.
4. the alloy material according to claim 1 or 3, is characterized in that, described alloy is also one or more elements be selected from platinum (Pt), rhodium (Rh) or iridium (Ir) of 0.8 ~ 2.0% containing weight percent.
5. alloy material according to claim 1, is characterized in that, described alloy contains the composition of following weight percent: palladium (Pd) 56.2%, silver (Ag) 28.0%, gold (Au) 1.8%, platinum (Pt) 1.2%, indium (In) 10.5%, gallium (Ga) 2.3%.
6. alloy material according to claim 1, is characterized in that, described alloy contains the composition of following weight percent: palladium (Pd) 57.3%, silver (Ag) 28.5%, gold (Au) 1.1%, platinum (Pt) 1.0%, indium (In) 10.1%, gallium (Ga) 2.0%.
7. a production method for palladium-silver alloy material according to claim 1, is characterized in that: comprise the following steps:
(1) prepare burden: component proportion is prepared burden by weight;
(2) melting: the raw material prepared is put into smelting furnace and carries out melting;
(3) pour into a mould: melted point molten metal is poured in mould, obtained just base;
(4) anneal: anneal is carried out to first base;
(5) rolling: by the first base rolling after annealing into about the square of 1g or rectangular parallelepiped sample.
8. production method according to claim 7, is characterized in that: described anneal nitrogen and hydrogen mixed gas protected under carry out.
9. the production method according to claim 7 or 8, is characterized in that: described melting and casting process carry out all under vacuum.
10. an application for palladium-silver alloy material according to claim 1, is characterized in that: use it for and make the PFM of dentistry fixed and repaired and the bottom of bridge and/or crane span structure, or separately for making dental casting metal restoration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310163210.8A CN103205594B (en) | 2013-05-07 | 2013-05-07 | Palladium-silver alloy material for dental department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310163210.8A CN103205594B (en) | 2013-05-07 | 2013-05-07 | Palladium-silver alloy material for dental department |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103205594A CN103205594A (en) | 2013-07-17 |
| CN103205594B true CN103205594B (en) | 2015-06-17 |
Family
ID=48752997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310163210.8A Expired - Fee Related CN103205594B (en) | 2013-05-07 | 2013-05-07 | Palladium-silver alloy material for dental department |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103205594B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789567B (en) * | 2014-01-22 | 2016-09-21 | 四川大学 | A kind of dentistry height palladium porcelain alloy material and preparation method and applications |
| CN110983147B (en) * | 2019-12-20 | 2021-05-11 | 有研亿金新材料有限公司 | High-strength palladium-based weak electrical contact material and preparation method thereof |
| CN114592159B (en) * | 2022-03-22 | 2023-01-06 | 重庆材料研究院有限公司 | Palladium alloy reinforced composite bonding wire and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174954A (en) * | 1991-03-01 | 1992-12-29 | Ivoclar N.A. | Palladium alloys for dental implant restorations |
| US5290371A (en) * | 1992-10-28 | 1994-03-01 | The J. M. Ney Company | Dental alloy and restoration made therewith |
| CN103002858A (en) * | 2010-05-27 | 2013-03-27 | 朴炯奭 | Metal alloy for fusion of dental ceramics, and dental prosthesis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2641538B2 (en) * | 1988-11-25 | 1997-08-13 | 株式会社徳力本店 | Dental composite metal material |
| JP4368343B2 (en) * | 2005-08-31 | 2009-11-18 | 石福金属興業株式会社 | Silver palladium alloy for dental porcelain baking |
-
2013
- 2013-05-07 CN CN201310163210.8A patent/CN103205594B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174954A (en) * | 1991-03-01 | 1992-12-29 | Ivoclar N.A. | Palladium alloys for dental implant restorations |
| US5290371A (en) * | 1992-10-28 | 1994-03-01 | The J. M. Ney Company | Dental alloy and restoration made therewith |
| CN103002858A (en) * | 2010-05-27 | 2013-03-27 | 朴炯奭 | Metal alloy for fusion of dental ceramics, and dental prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103205594A (en) | 2013-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5793136B2 (en) | Gray gold alloy without nickel and copper | |
| EP0289097B1 (en) | Castable palladium alloys and their use for making dental restorations, ornaments, and the like | |
| US3134671A (en) | Noble metals alloy containing gallium | |
| CN103205594B (en) | Palladium-silver alloy material for dental department | |
| EP1900836A1 (en) | Palladium-cobalt based alloys and dental articles including the same | |
| CN103002858A (en) | Metal alloy for fusion of dental ceramics, and dental prosthesis | |
| CN107164651B (en) | A kind of jewellery pink colour silver alloy and preparation method thereof | |
| JP2021050420A (en) | Palladium-based alloy | |
| KR101814631B1 (en) | NiCKEL-CHROMIUM-COBALT BASE ALLOYS SHOWING AN EXCELLENT COMBINATION OF BONDING CHARACTER | |
| KR100329822B1 (en) | Dental precious metal alloy for supplement | |
| KR101133677B1 (en) | Dental gold alloy containing small titanium amount | |
| KR100686692B1 (en) | Alloy for dental casting | |
| KR100592523B1 (en) | Compound metal composite for dental prosthesis | |
| JPS58107438A (en) | Low-carat baking alloy for dental use | |
| Rizk et al. | Types of dental alloys and the effect of its microstructure and constituents on its properties and applications in dentistry | |
| JP5767484B2 (en) | Silver base alloy | |
| KR101191987B1 (en) | Dental porcelain fused metal alloy and dental prosthetic material | |
| KR101181491B1 (en) | Alloy composite for dental prosthesis and manufacturing method for dental prosthesis | |
| KR20040047143A (en) | Dental Precious Alloy for Metal-Ceramic Crown and Method of Making the Same | |
| KR20040047148A (en) | Dental Precious Alloy and Method of Making the Same | |
| RU2604147C1 (en) | Gold-based alloy, hardened with intermetallides containing nickel, (versions) | |
| JP2003286526A (en) | Dental and decorative gold-silicon-based alloy | |
| CN110669957A (en) | High-hardness anti-tarnishing silver alloy and preparation method thereof | |
| JP5727854B2 (en) | Gold alloy for casting and manufacturing method thereof | |
| KR101254289B1 (en) | Dental porcelain fused metal alloy and dental prosthetic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20210507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |