CN103205594A - Palladium-silver alloy material for dental department - Google Patents
Palladium-silver alloy material for dental department Download PDFInfo
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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 the dental prosthetic material field, relate to a kind of palladium-silver alloy, particularly a kind of for the casting alloy of making porcelain dental case or metal restoration.
Background technology
After being introduced into dental prosthetic technology from 20 beginning of the century precision casting technologies, alloy material still is that Oral Repair is used material at most the most widely so far in the application in dental prosthetic field more and more widely.The dental casting alloy 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 surpass 85% then be classified as precious metal alloys, the semi-precious metal bullion content is between 60%～85%, the bullion content of low noble metal casting alloy does not contain the precious metal composition and then belongs to non-noble metal alloy between 25%～60%.
The high precious metal alloys of dentistry mainly are palau and plation, because of its good castibility, and noble color and luster, excellent erosion resistance and mechanical property and become the earliest alloy material; Base metal mainly is cobalt chromium and nichrome, and alloy is cheap, but exists corrosion-resistant and biocompatibility poor, and the patient is to many shortcomings such as metal ion allergy; Polarium and palladium-silver alloy bullion content are lower, so be called as half noble alloy, wherein palladium-silver alloy is similar to high gold-content alloy at aspects such as physics, machinery, chemical properties, and some performance also is better than au-alloy, and price only is 1/4～1/3 of au-alloy; And compare with non-noble metal alloy, its biocompatibility, corrosion resistance are good, and therefore moderate cost is considered to comparatively desirable dental prosthetic material.But still there are some defectives in existing palladium-silver alloy material, in the time of for example in being applied in the porcelain dental case because silver sulfuration easily in making the process of porcelain layer, thereby usually cause the porcelain variable color to influence the color and luster of dummy and attractive in appearance.
In the process of dental prosthetic alloy development, three factor affecting 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 progress of the reach of science and society, corrosion behavior wherein more comes into one's own, and becomes restriction dental alloy key in application factor.Dental alloy is exposed in variable oral cavity physical environment (temperature, stress), chemical environment (saliva, salt, liquid, medicine etc.) and the coenocorrelation (being bonded to the bacterial plaque on the dummy), and corrosion in various degree all can take place.But the extent of corrosion of various alloys and the harm of human body differed greatly.The corrosion of dental alloy can cause aesthstic performance and physicals to reduce, taeniae telarum is come biostimulation even causes the public's fear.For erosion resistance and the ductility that improves palladium-silver alloy, can add a certain amount of gold at palladium-silver alloy usually, but the adding of gold can cause the increase of cost again, thereby limit its application.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of used for stomatological repair palladium-silver alloy is provided, this alloy material is compared with current material, under the prerequisite that does not reduce alloy property and clinical result of use, has the good mechanical performance, good erosion resistance and low irritability, color and luster is attractive in appearance, and cost only is 1/4～1/3 of au-alloy.
The present invention is achieved through the following technical solutions:
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 51.1～59.9%, silver (Ag) 24.1～28.8%.In traditional palladium-silver alloy, when silver content surpasses 30%, in the process of making porcelain layer, can produce tangible sulfuration, thereby cause the facing porcelain of its surperficial sintering to present the dark green color and luster that influences dummy and attractive in appearance; The present invention can effectively suppress sulfuration by the content of adjusting silver and guarantee the color and luster of dummy and attractive in appearance, especially can avoid fully vulcanizing when the weight percent of silver is less than or equal to 27.5%.In reducing alloy in the silver content, for guaranteeing 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 content of the present invention by comprehensive adjustment palladium-silver obtains not only has lower cost but also have the favorable mechanical performance, can also effectively suppress sulfuration.
As optimal way, above-mentioned alloy contains following component in percentage by weight: 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, thereby obviously improves the golden porcelain bonding properties of alloy, and it is excessive and cause alloy melting point low excessively that its content is too much understood oxide thickness, and fragility increases; Then oxide thickness is not enough very little for content, and golden porcelain combination is all had disadvantageous effect.
As optimal way, it is 1.0～1.5% gold (Au) that above-mentioned alloy can also contain weight percent.The gold of this content can guarantee that the ductility of alloy material and erosion resistance and biocompatibility can effectively control cost again.
As optimal way, it is one or more elements in platinum (Pt), rhodium (Rh) or the iridium (Ir) of being selected from of 0.8～2.0% that above-mentioned alloy can also contain weight percent.By adding the fusing point that such alloying element effectively improves alloy, the fusing point of alloy is controlled more than 980 ℃.
As optimal way, it is 1.6～3.2% gallium (Ga) that above-mentioned alloy can also contain weight percent.Gallium can form AgGa mutually with silver and palladium respectively and PdGa equates functional phase, can also make materials microstructure more even, thereby also can produce oxide film at material surface simultaneously and improve its golden porcelain bonding properties, can also improve simultaneously Young's modulus and the hardness of material, better effects if when being used with indium; But therefore the fragility of the fusing point that adds the more significant reduction material of affiliation of gallium and increase material need its add-on of control, and the weight percent sum of gallium and indium should be no more than 15%.
As optimal way, described alloy contains following component in percentage by weight: palladium (Pd) 57.3, silver (Ag) 28.5%, gold (Au) 1.1, platinum (Pt) 1.0, indium (In) 10.1, gallium (Ga) 2.0.Alloy material with this proportioning has best over-all properties.
The present invention also provides the production method of above-mentioned palladium-silver alloy material, it is characterized in that: may further comprise the steps:
(1) batching: the set of dispense ratio is prepared burden by weight;
(2) melting: the raw material for preparing is put into smelting furnace carries out melting;
(3) cast: melted point molten metal is poured in the mould, makes base just;
(4) annealing: first base is carried out anneal;
(5) rolling: the first base after will annealing rolling square or rectangular parallelepiped sample into about 1g.
As optimal way, in aforesaid method, described anneal is carried out under nitrogen and hydrogen mixed gas protected.Traditional annealing process generally carries out under nitrogen protection for avoiding material oxidation; but nitrogen protection can't be got rid of oxygen fully, by add a spot of hydrogen in protective atmosphere, can eliminate oxygen effectively; thereby avoid the oxidation of material, improve the luminance brightness of material surface.
As optimal way, in aforesaid method, described melting and casting process all carry out under vacuum condition.
Another object of the present invention is to provide a kind of application of above-mentioned palladium-silver alloy material, it is characterized in that: use it for and make metal ceramic crown that the dentistry fixed and repaired uses and bottom and/or the crane span structure of bridge, or be used for making the dental casting metal restoration separately.
Beneficial effect of the present invention:
Palladium (Pd) chemical property is stabilized in the alloy and can plays crystal grain thinning, improves effects such as alloy erosion resistance, and can improve the mechanical property of alloy when keeping ductility; Silver (Ag) ductility is strong and chemical stability is high, can play the effect that increases alloy ductility, and a certain proportion of silver can reduce the cost of alloy simultaneously.In existing dental palladium-silver alloy, the content of silver is all than higher.When being used for the porcelain dental case, higher silver content makes alloy sulfuration occur easily in the process of making porcelain layer, thereby causes the facing porcelain of its surperficial sintering to present the dark green color and luster that influences dummy and attractive in appearance.The present invention is by adjusting the content of palladium (Pd) and silver (Ag), when guaranteeing alloy ductility and mechanical property, suppress the sulfuration of silver (Ag), improved the sulfidation-resistance of alloy, improved the color and luster of planting body, improve liquidus temperature simultaneously, improved the castability of alloy.
Gold (Au) ductility is good, and chemical property is stable, adds the corrosion resistance that can improve the ductility of alloy in the palladium-silver alloy and improve alloy to.Therefore in the palladium-silver alloy of existing better performances, all can add a certain amount of gold (Au), but because price of gold lattice costliness, the cost of alloy is higher, the present invention is by adjusting the proportioning of each alloying element, on the basis of the ductility that keeps alloy and erosion resistance, reduce gold (Au) content, thereby reduced cost.
The fusing point of gallium (Ga) is, the surface that 29.78 ° of C liquid galliums almost can wetting all substances has good casting performance, and gallium can be diffused into rapidly in the lattice of some metal, at high temperature can generate alloys with many metals.Gallium is harmless, is a kind of safe metal, has excellent biological compatibility.Indium (In) fusing point is 156.61 ℃, can form alloys with many metals, from normal temperature to the fusing point between, indium and the reaction of airborne oxygen can be at surface formation oxide films as thin as a wafer.The present invention adds a certain proportion of In and Ga in alloy, can obviously improve the golden porcelain bonding properties of alloy by both cooperation, makes alloy be combined more firm with the inorganic porcelain layer of its surperficial sintering.
Platinum (Pt) matter softness has ductility, has very high chemical stability, fusing point is 1772 ℃, and the present invention adds a spot of platinum in alloy, has significantly improved the fusing point of palladium-silver alloy, improve the alloy yield strength, reduced the alloy coefficient of expansion, and improved the corrosion resistance nature of alloy.
Palladium-silver alloy of the present invention has the good mechanical performance.Yield strength〉500 MPa, gold porcelain bonding strength is 41～63.8 MPa, Young's modulus〉106.3 MPa, unit elongation〉4%, the mechanical property of palladium-silver alloy of the present invention is stipulated (the 4th class superstrength alloy in ADA (ADA) standard, be 450 MPa at sclerosis attitude lower yield strength, unit elongation is 3%) requirement.
Palladium-silver alloy of the present invention is with nickel chromium triangle/cobalt chromium base metal compares corrosion resistance nature and biocompatibility is splendid.To compare mechanical property more excellent with existing palladium-silver alloy or au-alloy etc., and corrosion resistance nature and biocompatibility approach, and tangible price advantage is arranged.
Palladium-silver alloy production method of the present invention, can obtain the alloy block of about 1g through melting, rolling, shearing etc., products obtained therefrom stable performance simple to operate, through vacuum melting and vacuum casting, alloy purity 〉=99.95% that obtains is the highest dental palladium-silver porcelain alloy of present global metal purity.
Embodiment
The invention will be further described below in conjunction with embodiment, it should be understood that these embodiment only are used for the purpose of illustration, never limit protection scope of the present invention.
Embodiment 1
A kind of dental palladium-silver alloy material, described alloy contains the main body composition of following weight percent: palladium (Pd) 57.6%, silver (Ag) 28.1%, surplus is other alloying elements, specifically can be at least a 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.Present embodiment with the gallium of 11.4% indium and 2.9% as demonstration.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; Under nitrogen protection and under the nitrogen hydrogen mixeding gas protection, first base is carried out anneal respectively; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1240 ℃, and yield strength is 503 MPa, and Vickers' hardness is 350HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, does not have obvious metachromatism.Erosion resistance is by the standard method test, and concentration of metal ions is 0.15mg/(cm behind the soak test
27d); Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
The nitrogen hydrogen mixeding gas protection sample appearance of annealing down is bright silver, the luminance brightness height; The sample appearance of annealing under the nitrogen protection is silver gray, and luminance brightness is lower slightly.
Comparative Examples 1
Be the relatively influence of silver content antagonism curability, designed a kind of contrast material and contained following component in percentage by weight: 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, and the gained sample is used for making ceramic prosthesis, and the facing porcelain of its surperficial sintering presents dark green, significantly sulfuration of generation.
Embodiment 2
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 58.4%, silver (Ag) 27.1%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
1260 ℃ of gained sample liquidus temperatures, yield strength are 511MPa, and Vickers' hardness is 338HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place fully.Erosion resistance is by the standard method test, and concentration of metal ions is 0.13 mg/(cm behind the soak test
27d); Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 3
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 55.7%, silver (Ag) 28.6%, gold (Au) 1.3%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1210 ℃, and yield strength is 501 MPa, and Vickers' hardness is 334HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, tangible metachromatism can not take place.Erosion resistance is by the standard method test, and concentration of metal ions is 0.021mg/(cm behind the soak test
27d); Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 4
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 55.7%, silver (Ag) 28.6%, gold (Au) 1.2%, surplus is other alloying elements.
Prepare burden by above-mentioned components by weight percent proportioning; The raw material for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1215 ℃, and yield strength is 501 MPa, and Vickers' hardness is 336HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, tangible metachromatism can not take place.Erosion resistance is by the standard method test, and concentration of metal ions is 0.031mg/(cm behind the soak test
27d); Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 5
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 55.6%, silver (Ag) 27.5%, 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1320 ℃, and yield strength is 510 MPa, and Vickers' hardness is 330HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.020mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 6
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 55.9%, 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1360 ℃, and yield strength is 540 MPa, and Vickers' hardness is 331HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.16 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 7
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: palladium (Pd) 59.6%, 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1270 ℃, and yield strength is 510 MPa, and Vickers' hardness is 333HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.15 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 8
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1210 ℃, and yield strength is 509 MPa, and Vickers' hardness is 357HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.035 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 9
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.
Gained sample liquidus temperature is 1350 ℃, and yield strength is 536 MPa, and Vickers' hardness is that 344HV gold porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.051mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 10
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.Gained metal purity was 99.98% when described melting and casting process all carried out under vacuum condition, and more antivacuum processing has improved more than 0.1%.
Gained sample liquidus temperature is 1300 ℃, and yield strength is 538 MPa, and Vickers' hardness is that 357HV gold porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, tangible metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.017 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 11
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; The nitrogen hydrogen mixeding gas protection is carried out anneal to first base down; With first base rolling square or the rectangular parallelepiped sample into about 1g after the annealing.When described melting and casting process all carried out under vacuum condition, gained metal purity was 99.98%, and more antivacuum processing has improved more than 0.1%.
Gained sample liquidus temperature is 1310 ℃, and yield strength is 542MPa, and Vickers' hardness is that 347HV gold porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.016 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
Embodiment 12
A kind of dental palladium-silver alloy material, described alloy contains following component in percentage by weight: 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 for preparing is put into smelting furnace carries out melting; Melted point molten metal is poured in the mould, makes base just; With gained first base rolling square or rectangular parallelepiped sample into about 1g.When described melting and casting process all carried out under vacuum condition, gained metal purity was 99.98%, and more antivacuum processing has improved more than 0.1%.
Gained sample liquidus temperature is 1310 ℃, and yield strength is 538MPa, and Vickers' hardness is 332HV, and golden porcelain bonding 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%, and the gained sample is used for making ceramic prosthesis, need not to carry out anti-silver-colored sulphur and becomes processing, product color is attractive in appearance, tangible metachromatism can not take place.Erosion resistance is by standard method test, and concentration of metal ions is 0.017 mg/(cm27d) behind the soak test; Anti-dark and gloomy property by the standard method test after, alloy surface color and gloss and untested sample relatively do not have observable difference, biological assessment structure display material no cytotoxicity, do not see acute general toxicity, no sensitivity response.
The above only is the preferred embodiments of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive; Those of ordinary skills understand, and can carry out many changes to it in the spirit and scope that claim of the present invention limits, revise, even the equivalence change, but all will fall into protection scope of the present invention.
Claims (10)
1. a dental palladium-silver alloy material is characterized in that described alloy contains following component in percentage by weight: palladium (Pd) 51.1～59.9%, silver (Ag) 24.1～28.8%.
2. alloy material according to claim 1 is characterized in that, described alloy contains following component in percentage by weight: palladium (Pd) 51.1～59.9%, silver (Ag) 24.1～28.8%, indium (In) 9.1～11.8%.
3. alloy material according to claim 1 and 2 is characterized in that, it is 1.0～1.5% gold (Au) that described alloy also contains weight percent.
4. according to any one described alloy material among the claim 1-3, it is characterized in that it is one or more elements in platinum (Pt), rhodium (Rh) or the iridium (Ir) of being selected from of 0.8～2.0% that described alloy also contains weight percent.
5. according to any one described alloy material among the claim 1-4, it is characterized in that it is 1.6～3.2% gallium (Ga) that described alloy also contains weight percent.
6. alloy material according to claim 1 is characterized in that, described alloy contains following component in percentage by weight: 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. production method according to the described palladium-silver alloy material of claim 1 is characterized in that: may further comprise the steps:
(1) batching: the set of dispense ratio is prepared burden by weight;
(2) melting: the raw material for preparing is put into smelting furnace carries out melting;
(3) cast: melted point molten metal is poured in the mould, makes base just;
(4) annealing: first base is carried out anneal;
(5) rolling: the first base after will annealing rolling square or rectangular parallelepiped sample into about 1g.
8. production method according to claim 7 is characterized in that: described anneal is carried out under nitrogen and hydrogen mixed gas protected.
9. according to claim 7 or 8 described production methods, it is characterized in that: described melting and casting process all carry out under vacuum condition.
10. application according to the described palladium-silver alloy material of claim 1 is characterized in that: use it for and make metal ceramic crown that the dentistry fixed and repaired uses and bottom and/or the crane span structure of bridge, or be used for making the dental casting metal restoration separately.
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| CN201310163210.8A CN103205594B (en) | 2013-05-07 | 2013-05-07 | Palladium-silver alloy material for dental department |
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| CN201310163210.8A CN103205594B (en) | 2013-05-07 | 2013-05-07 | Palladium-silver alloy material for dental department |
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| CN103205594B CN103205594B (en) | 2015-06-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789567A (en) * | 2014-01-22 | 2014-05-14 | 四川大学 | Novel dental high-palladium baked porcelain alloy material as well as preparation method and application thereof |
| CN110983147A (en) * | 2019-12-20 | 2020-04-10 | 有研亿金新材料有限公司 | High-strength palladium-based weak electrical contact material and preparation method thereof |
| CN114592159A (en) * | 2022-03-22 | 2022-06-07 | 重庆材料研究院有限公司 | Palladium alloy reinforced composite bonding wire and preparation method thereof |
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| JPH02147178A (en) * | 1988-11-25 | 1990-06-06 | Tokuriki Honten Co Ltd | Combined metallic material for dental purpose |
| 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 |
| JP2007063630A (en) * | 2005-08-31 | 2007-03-15 | Ishifuku Metal Ind Co Ltd | Silver-palladium alloy for baking dental ceramic material |
| CN103002858A (en) * | 2010-05-27 | 2013-03-27 | 朴炯奭 | Metal alloy for fusion of dental ceramics, and dental prosthesis |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02147178A (en) * | 1988-11-25 | 1990-06-06 | Tokuriki Honten Co Ltd | Combined metallic material for dental purpose |
| 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 |
| JP2007063630A (en) * | 2005-08-31 | 2007-03-15 | Ishifuku Metal Ind Co Ltd | Silver-palladium alloy for baking dental ceramic material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789567A (en) * | 2014-01-22 | 2014-05-14 | 四川大学 | Novel dental high-palladium baked porcelain alloy material as well as preparation method and application thereof |
| 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 |
| CN110983147A (en) * | 2019-12-20 | 2020-04-10 | 有研亿金新材料有限公司 | High-strength palladium-based weak electrical contact material and preparation method thereof |
| 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 |
| CN114592159A (en) * | 2022-03-22 | 2022-06-07 | 重庆材料研究院有限公司 | Palladium alloy reinforced composite bonding wire and preparation method thereof |
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| CN103205594B (en) | 2015-06-17 |
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