CN101100711A - White noble metal alloy - Google Patents
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- CN101100711A CN101100711A CNA2007101422227A CN200710142222A CN101100711A CN 101100711 A CN101100711 A CN 101100711A CN A2007101422227 A CNA2007101422227 A CN A2007101422227A CN 200710142222 A CN200710142222 A CN 200710142222A CN 101100711 A CN101100711 A CN 101100711A
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Abstract
The present invention relates to a white noble metal alloy combination, which comprises at least one of platinum and palladium which alloying with gold, siller and one or more choice additive alloy elements. Specifically speaking, in a specific way of implementing, the present invention discloses a white noble metal alloy combination which can be used to manufacture headgear and other products. In addition, the present invention also relates to a method for manufacturing finished products with such white noble metal alloy combination.
Description
Technical field
The present invention relates to the white noble metal alloy composition.More specifically, in a kind of embodiment, the present invention relates to be suitable for making the white noble metal alloy composition of jewellery and other finished product (finishedarticle).In addition, the invention still further relates to the method for making finished product by the white noble metal alloy composition.
Background technology
In recent years, the popularity degree of platinum (white gold) stably rose always, caused the also corresponding growth of demand of dialogue gold ornaments, especially in Japan and Chinese.Because it is comparatively cheap with respect to platinum, so platinum is especially popular, because the public can not easily distinguish platinum jewellery and platinum jewellery.In other words, for the wearer, the platinum jewellery can keep the anima and the exclusive property of platinum jewellery with the price that reduces greatly.
The enough platinum of many jewellery manufacturers's energy is made jewellery.In fact, because platinum presents better treatment characteristic and lower temperature of fusion than platinum, the platinum jewellery are usually than the easier making of platinum jewellery.
Many different platinum alloy composites are known in this area.These alloys generally include gold and at least a additional metal, such as nickel, silver, platinum or palladium.Extra complex element, for example copper can be used for perfect (round out) said composition.
Nickel added availablely in the platinum give a kind of " whiter " primary colours of alloy and increase cost hardly.Yet, add nickel and increased the fragility of alloy, and may make some wearer anaphylaxis occur.
Silver is the whitest metal, and it in the time of in being comprised in the platinum composition, can cause anaphylaxis unlike nickel.Yet silver is relatively costly and in case be exposed to promptly can oxidation in the air.In addition, argentiferous platinum alloy may be easy to pass in time and tarnish.
With the composition adding platinum of silver and nickel also is known.In these alloys, the relative content optimization with silver and nickel to obtain the great advantage of each element, makes its shortcoming be reduced to minimum simultaneously.
Platinum and/or palladium also be introduced in the platinum.Yet in view of they high costs, and this cost may be higher than the twice of cost of gold, with these elements be included in generally say so in the platinum with economic principle infeasible.Especially true in the time of if the alloy that is produced will being sold as platinum, because of it can not require the high price identical with platinum.
Because gold inherent yellow, the platinum alloy really is not " white " on color.According to the composition of alloy, the color gamut of platinum can be from white with light green tone to the white with light-yellow tinge.All by 10 open platinum to 18 open in the scope of platinum, be not always the case based on the platinum jewellery of gold.
In addition, the platinum alloy is corrosion-vulnerable also, and this has reduced the finished product of being made by these alloys, jewellery for example, white.In order to be protected from such corrosion, be coated with or plate one deck rhodium usually by the goods of platinum manufacturing.Rhodium is a kind of white metal of corrosion-resistant and high reflection, and it is more expensive more than platinum.So, consider economic feasibility, only adopt extremely thin rhodium layer.Therefore, between the normal usage period, the rhodium layer can wear away gradually at goods, thereby exposes following platinum alloy and its corresponding pale green or yellowish tone.For goods are reverted to white, rhodium must be plated again/be coated on the goods.For the platinum jewellery, suppose normal use and depend on the thickness of rhodium layer, must carry out such coating again in per six to 18 months usually.
Although there are many modes to make the platinum jewellery, the feature of qualification is that it contains a large amount of relatively gold.Especially recent years, gold is relatively more expensive.This expensive be disadvantageous, especially under the situation that is gold jewelry, wherein gold can account for finished product 80% or more.
Summary of the invention
Therefore, it is the novel white noble metal alloy of attractive substitute that a kind of embodiment of the present invention provides platinum and platinum, and it has a plurality of advantages, comprising: inherent brilliant white, solidity to corrosion, workability, low relatively cost.Another embodiment of the present invention provides the method for being made finished product by such white noble metal alloy.
Novel white noble metal alloy composition provided by the invention, it comprises: the yellow gold and silver of at least a usefulness and the optionally platinum and the palladium of one or more additional alloying element alloyings.These alloy composites can be used for for example making various finished product.The limiting examples of such finished product comprises: Jewelry product, the chain of making such as the chain of being made by wire, by tinsel, the chain of being made by foundry goods; Hollow line; The souvenir thing; Souvenir; Picture frame; Tableware; The body material of various sheet materials such as coin and watchband.Certainly, these application only are exemplary, should not regard restricted property as.
Alloy composite of the present invention presents one or more advantageous feature, comprises for example inherent brilliant white, anti-discolouring, anti-dark-coloured, excellent workability.In addition, the platinum jewellery that the jewellery weight of being made by alloy composite of the present invention can be more close than size are lighter.At last, alloy composite of the present invention can for example weld with laser, welding powder, fire weldering (fire soldering) by traditional method.When comparing with the platinum that can only weld by the specific weld method of needs weldering slurry, this ability is particularly advantageous.
Other purpose of the present invention and advantage part are in the following description listed, and from this description also the part may be obvious that, perhaps can be familiar with obtaining by enforcement of the present invention.Objects and advantages of the present invention will realize or obtain by the key element especially pointed out in appending claims and combination.
Should be appreciated that above generality is described and detailed description hereinafter only is exemplary and indicative, and be not as limit the present invention claiming.
Embodiment
As illustrated in summary of the invention, a kind of embodiment of the present invention provides the white noble metal alloy composition, and it is a kind of cheaper alternative of platinum, but can keep the anima and the exclusive property of platinum.
The invention provides the white noble metal alloy composition, it comprises the yellow gold and silver of at least a usefulness and the optionally platinum and the palladium of one or more additional alloying element alloyings.Particularly, the invention provides the white noble metal alloy composition, comprise: by weight percentage, at least a in platinum greater than 0 to 35% and the palladium, 10% to 30% gold, 32% to 75% silver, 0 to 4% optionally additional alloying element.
The platinum in the white noble metal alloy composition and/or the content of palladium can change in above-mentioned scope.For example, one of them or both of platinum and palladium can exist with the content of 5% to 25% scope by weight.In the embodiment of indefiniteness of the present invention, the scope of the content of platinum and/or palladium is by weight 10% to 20%, more particularly is 10% to 16%, also more particularly is 10%～15%.
The content of the gold in the white noble metal alloy composition also can change in above-mentioned scope.For example, gold can exist with the content of 10% to 25% scope by weight.In the embodiment of indefiniteness of the present invention, the scope of the content of gold is 10%～20% by weight, more particularly is 10%～19%, especially is 10%～16%, also more particularly is 10% to 11%.
The content of the silver in the white noble metal alloy composition also can change in above-mentioned scope.For example, silver can exist with the content of 32%～65% scope.In the embodiment of indefiniteness of the present invention, the scope of the content of silver is 36%～71% by weight, more particularly is 36% to 66%, also more particularly is 36%～57%.In the embodiment of another indefiniteness, the content of silver can be determined by the nickel that exists in composition or do not deposit in the white noble metal alloy composition.In this embodiment, if nickel is present in the alloy, the content of silver in the white noble metal alloy composition can be by weight in 36% to 66% scope.Replacedly, if do not have nickel in the white noble metal alloy composition, the content of silver can be by weight in 36%～75% scope.
The content of optional additional alloying element also can change in above-mentioned scope in the white noble metal alloy composition.For example, the white noble metal alloy composition can contain one or more additional alloying elements of 0 to 3%, more particularly 0～2.5% and more particularly 0 to 1.5% by weight.In the embodiment of indefiniteness of the present invention, the total amount that joins the optional additional alloying element in the white noble metal alloy composition is no more than 4% by weight.In another kind of indefiniteness embodiment, the optional additional element that joins in the white noble metal alloy composition can surpass 4% by weight, and precondition is that the content of each separately optional element is no more than 4% by weight.
As the non-limiting example of the optionally additional alloying element that can be used for white noble metal alloy composition of the present invention, what can mention is copper, nickel, zinc.Certainly, optionally other element of additional alloying element and combination also can be used in the white noble metal alloy composition.
If adopt, the effect of white noble metal alloy composition properties to desired mode regulated in optionally additional alloying element performance.For example, the nickel up to 4% by weight can be joined in the alloy as SYNTHETIC OPTICAL WHITNER or stiffening agent.And, can add and reach 3.0% copper, to improve ductility, erosion resistance, temperature tolerance.At last, for such as the fusing point that reduces alloy, improve a variety of causes such as alloy weather-resistant, can add and reach 1.5% zinc by weight, reduce surfaceness, improve by alloy by for example casting the surface brightness of the goods that form.
Table 1 provides the indefiniteness embodiment that falls into the alloy in the scope of the invention and the tabulation of their correlated performance:
Table 1
| Sample number into spectrum of the present invention | Heavy % gold | Heavy % palladium | Heavy % platinum | Heavy % silver | Heavy other element of % | Vickers' hardness (aged) | Tensile strength (Kgf/ mm) | Elongation at break (%) | Fusing point (℃) |
| 01 | 11 | 10 | 0 | 75 | 3.4% bronze medal, 0.6% zinc | 87-88 | 14.29 | 15.90 | 1060 |
| 02 | 16 | 15 | 0 | 66 | 2.55% bronze medal, 0.45% zinc | 124-125 | 19.70 | 13.50 | 1018 |
| 03 | 16 | 16 | 0 | 65 | 3% nickel | 125-127 | * | * | * |
| 04 | 16 | 0 | 15 | 66 | 2.55% bronze medal, 0.45% zinc | * | 12.40 | 37.28 | 1010 |
| 05 | 16 | 0 | 10 | 71 | 2.55% bronze medal, 0.45% zinc | 126-128 | 18.10 | 21.50 | 1010 |
| 06 | 11 | 10 | 0 | 75 | 4% nickel | * | * | * | * |
| 07 | 16 | 15 | 0 | 65 | 3.4% bronze medal, 0.6% zinc, 0.0% nickel | * | * | * | * |
| 08 | 16 | 15 | 0 | 65 | 4% nickel | * | * | * | * |
| 09 | 30 | 35 | 0 | 32 | 2.55% bronze medal, 0.45% zinc | 156-158 | 19.60 | 14.00 | 1136 |
| 10 | 20 | 10 | 0 | 67 | 2.55% bronze medal, 0.45% zinc | 113-117 | 18.44 | 28.70 | 1022 |
| 11 | 20 | 20 | 0 | 57 | 2.55% bronze medal, 0.45% zinc | 186-189 | 14.16 | 25.30 | 1078 |
| 12 | 10 | 35 | 0 | 52 | 2.55% bronze medal, 0.45% zinc | 185-187 | 22.40 | 20.00 | 1068 |
| Sample number into spectrum of the present invention | Heavy % gold | Heavy % palladium | Heavy % platinum | Heavy % silver | Heavy other element of % | Vickers' hardness (aged) | Tensile strength (Kgf/ mm) | Elongation at break (%) | Fusing point (℃) |
| 13 | 10 | 25 | 0 | 62 | 2.55% bronze medal, 0.45% zinc | 89-93 | 22.90 | 26.00 | 1093 |
| 14 | 25 | 35 | 0 | 37 | 2.55% bronze medal, 0.45% zinc | 143-145 | 14.16 | 27.87 | 1178 |
| 15 | 16 | 35 | 0 | 46 | 2.55% bronze medal, 0.45% zinc | 126-130 | 15.03 | 23.44 | 1165 |
*Undetermined
For relatively, prepared several traditional white noble metal alloy compositions, their hardness, temperature of fusion are made carbon copies in following table 2.
Table 2
| The comparative sample numbering | Heavy % gold | Heavy % nickel | Heavy % copper | Heavy % zinc | Heavy other element of % | Hardness | Fusing point (℃) |
| 01 | 75.0 | 10.0 | 12.5 | 2.5 | 0.0 | 230V * | 950-910 |
| 02 | 75.0 | 13.5 | 8.5 | 3.0 | 0.0 | 198V | 950-925 |
| 03 | 75.0 | 0.0 | 0.0 | 0.0 | 20% palladium, 5% silver medal | 100B | 1280-1272 |
| 04 | 58.7 | 15.6 | 18.5 | 7.2 | 0.0 | 170B | 1010-920 |
| 05 | 41.7 | 13.0 | 38.3 | 7.0 | 0.0 | 150B | 1050-940 |
| 06 | 0.0 | 0.0 | 0.0 | 0.0 | 95% palladium, 5% silver medal | 100V | 1450-1380 |
*The V=Vickers' hardness; The B=Brinell hardness
As shown in table 1, the white noble metal alloy composition of the present invention of institute's example presents and performance like traditional platinum alloy phase, the about 120-150 of Vickers' hardness for example, the about 20kgf/mm of tensile strength, about 1020 ℃ of fusing point.Therefore, compare with the workability of traditional platinum alloy, white noble metal alloy composition of the present invention has excellent workability.
The sample of all the invention described above all is applicable to the manufacturing finished product.Yet sample 01-08 of the present invention is particularly useful for making jewellery, such as ring, watchband, snake abdomen chain, the young chain (box chain) of box, Milan chain (Milano chain), necklace, earrings, spectacle frame.Term used herein " Milan chain (Milano chain) " is meant the punching press type chain made from OMBI TAV-TA1 machine.
In addition, by the time that sample and traditional silver jewellery with alloy of the present invention are immersed in a paragraph qualification in the synthetic sweat with following composition, show the anti-dead color of white noble metal alloy composition of the present invention with respect to silver jewellery:
Synthetic sweat
| Compound | Chemical structure | Amount |
| Urea | (NH 2) 2CO | 50g |
| Salt | NaCl | 100g |
| Hydrochloric acid | HCl | 25ml |
| Lactic acid | C 3H 6O 3 | 25ml |
| Repone K | KCl | 35g |
| Phosphoric acid | H 3PO 4 | 1.5ml |
| Sugar | - | 0.5g |
| White protein (albumen) | - | 0.5g |
| Water | H 2O | 100ml |
Particularly, this compare test is to carry out in order to following method.After will synthesizing sweat and being heated to its boiling point, the sample of white noble metal alloy composition of the present invention and conventional silver jewellery was immersed in this liquid three minutes.These samples of visual inspection produce the phenomenon of colour-change because of tarnishing then.After being exposed to synthetic sweat, the sample of white noble metal alloy composition of the present invention goes out with they initial white to compare, and presents atomic even has no the phenomenon of colour-change.By comparison, the sample of silver jewellery presents very obvious color variation because of tarnishing.
By the sheet material color of comparison alloy of the present invention and the sheet material color of the platinum alloy composition that standard 18 is opened, measure " whiteness " of white noble metal alloy composition of the present invention.Particularly, the sheet material of the platinum alloy that the sheet material of white noble metal alloy composition of the present invention and standard 18 are opened, the sheet material wherein of the present invention and alloy of making comparisons is made by melting suitable alloy and melt being rolled into sheet material.The color of the sheet material that is produced is measured by visual inspection.Present sheet material " whiter " primary colours of the platinum of opening than standard 18 by the sheet material of alloy manufacturing of the present invention.
In addition, measure the resistance of white noble metal alloy composition of the present invention by the colour-change of observation alloy under the condition that simulate real world is used to colour-change.For example, will place in the open three months with traditional silver jewellery by the jewellery sample of white noble metal alloy composition of the present invention manufacturing.When this period finishes, the sample of the present composition is compared with the sample of conventional silver jewellery.Visual inspection to these samples shows that alloy composite of the present invention still keeps its white, and the silver-colored sample of making comparisons then presents the phenomenon that tarnishes.
In addition, wear every day in three months for some people in the sample of white noble metal alloy composition of the present invention, use and be exposed to the influence of physical environment (that is, sweat, soap, shampoo, water) alloy to measure real world.After this period, all samples are fetched inspection and test.Clean with conventional soap and ultrasonication after, the visual inspection of sample of the present invention is manifested the phenomenon that does not tarnish.
The invention still further relates to white noble metal alloy composition of the present invention is manufactured method such as finished product such as jewellery, impression goods or cast products.
As the indefiniteness embodiment of this method, make by the following method by the chain of white noble metal alloy manufacturing of the present invention.
As the embodiment of the inventive method, will have with first sample fusion in continuous casting machine of the element of the corresponding amount specific blend of white noble metal alloy composition of the present invention, produce the about 6 millimeters white wire rod alloy of diameter.Carry out the quality examination of tested for hardness and extensibility herein, have and the platinum similar performance to guarantee sample.Use drawing wire machine/flaking machine that line is elongated to the required size of the finished product (round or square, as to decide according to requiring), any length of 0.52 millimeter to 0.80 millimeter (the specific corresponding Milan of this scope chain also can adopt other sizes) then.Then it is rolled into volume (spool) and feed into chain making machine.At this moment, carry out another quality examination with surging force strength test form, suitable with the quality of guaranteeing sample and platinum once more.
Then with the chain degreasing that obtained (to remove grease), put into then that the stainless shot polishing machine polishes and the clean surface, again with its surperficial hammer out (chain of other types may need to weld strengthen connecting) from machine.Adopt diamond cutting process to make chain produce gloss then.Then chain is cut into certain size, and with the instrument assembling, to make the sample of finishing.Make this sample of finishing experience a finishing stage (finishing stage) again, polish, clean and rhodanizing.In carrying out the whole process of these steps, even when the rhodium layer peeled off, sample also presented good workability and keeps its white.Sample also can be suitable with platinum aspect hardness.And between each above-mentioned steps, also optionally carry out annealing operation, to improve the workability of sample.
In another indefiniteness embodiment of the present invention, by the following method white noble metal alloy composition of the present invention is manufactured Milan chain:
The mixing material that contains 16% gold, 15% palladium, 66% silver medal, 0.9% zinc and 2% bronze medal is provided.With CEIA Magma-12 continuous fusion machine this sample is fused together in crucible in 1020 ℃, draws then with formation and have the initial line that diameter is 7.35mm, again this line is carried out following operation:
| The operation name | Size (millimeter) | Annealing temperature and time | Vickers' hardness (HV) |
| Roll | 5.05×5.05 | Inapplicable | 131-141 |
| Annealing | 5.05×5.05 | 800 ℃, 60 minutes | 102-107 |
| Roll | 3.45×5.85 | Inapplicable | 137 |
| Annealing | 3.45×5.85 | 800 ℃, 60 minutes | 106-109 |
| Roll | 1.96×7.10 | n/a | 148-150 |
| Annealing | 1.96×7.10 | 630 ℃, 30 minutes | 108-111 |
| Roll | 1.27×7.52 | Inapplicable | 94-96 |
| Annealing | 1.27×7.52 | 800 ℃, 100 minutes | 95-99 |
| Roll | 0.65×7.70 | Inapplicable | - |
| Annealing | 0.65×7.70 | 630 ℃, 30 minutes | 95-99 |
| Roll | 0.35×7.90 | Inapplicable | - |
| Roll | 0.17×8.25 | Inapplicable | - |
| Cutting | 0.17×6.35 | Inapplicable | 165-162 |
| Baking | 0.17×6.35 | 610 ℃, 30 minutes | 107 |
Then with in the made gold sheet supply equipment, so that with its punching and assembling chaining.Then will made chain degreasing and put into the stainless shot polishing machine and polish also clean surface, with its surperficial hammer out, supply to the diamond cutting action then again, so that it is glossy.At last, chain is carried out finishing (polishing processing) and is assembled into different length with instrument, with the product of making purified necklace or bracelet or other kinds and to its rhodanizing.
Except in an embodiment or under the other indicated situation, all numerical value of the amount of employed expression composition, reaction conditions etc. all are interpreted as all can adding term " about " in all cases in specification sheets and claims.Therefore, unless opposite indicating, the numerical parameter that provides in following specification sheets and appending claims is can be along with the approximation of the expected performance variation that requires to obtain by the present invention.Bottom line is not in order to limit claims to be used doctrine of equivalents, and each numerical parameter all should make an explanation according to the numerical value of significant figure and common rounding-off method.
Although listing the numerical range and the parameter of wide region of the present invention is approximation, will in above-mentioned specific embodiment, as far as possible accurately write down by listed numerical value.Yet any numerical value self comprises the certain necessary error that is caused by the standard deviation of finding in their test determinations separately.
Certainly, the method for the foregoing description only is an example of the present invention, should not be construed restricted property.To those skilled in the art, by specification sheets and enforcement the present invention with reference to disclosure in this article, other embodiments of the present invention will be apparent.That is to say that specification sheets and embodiment should only be understood that exemplary, and true scope of the present invention and spirit are indicated by appending claims.
Claims (20)
1. white noble metal alloy composition comprises:
-at least a by weight greater than 0 to 25% platinum and palladium;
-10% to 16% gold by weight;
-32% to 75% silver by weight; And
-at least a 0 to 4% additional alloying element by weight.
2. white noble metal alloy composition according to claim 1, wherein, described alloy comprises at least a 10% to 20% platinum and palladium by weight.
3. white noble metal alloy composition according to claim 2, wherein, described alloy comprises at least a 10% to 15% platinum and palladium by weight.
4. white noble metal alloy composition according to claim 1, wherein, described alloy comprises 10% to 15% gold by weight.
5. white noble metal alloy composition according to claim 1, wherein, described alloy comprises 32% to 65% silver by weight.
6. white noble metal alloy composition according to claim 5, wherein, described alloy comprises 36% to 57% silver by weight.
7. white noble metal alloy composition according to claim 1, wherein, described alloy comprises at least a by weight greater than 0 to 3% described additional alloying element.
8. white noble metal alloy composition according to claim 7, wherein, described alloy comprises at least a by weight greater than 0 to 1.5% described additional alloying element.
9. white noble metal alloy composition according to claim 1, wherein, the total amount that is present in the additional alloying element in the described white noble metal alloy composition is no more than 4% by weight.
10. white noble metal alloy composition according to claim 1, wherein, described at least a additional element is selected from copper, nickel and zinc, and:
If-copper is present in the described alloy composite, the scope of the amount of its existence is greater than 0 to 3% by weight;
If-zinc is present in the described alloy composite, the scope of the amount of its existence is greater than 0 to 1.5% by weight;
If-nickel is present in the described alloy composite, the scope of the amount of its existence is greater than 0 to 4% by weight.
11. white noble metal alloy composition according to claim 1, wherein, described alloy is not nickeliferous.
12. finished product comprise the described white noble metal alloy composition of claim 1.
13. finished product according to claim 12, wherein, the amount that described at least a additional alloying element exists is by weight in greater than 0 to 4% scope.
14. finished product according to claim 12, wherein, described goods are selected from jewellery, impression goods and cast product.
15. finished product according to claim 12, wherein, described white noble metal alloy composition is not nickeliferous.
16. a method that is used to make finished product comprises:
-a kind of white noble metal alloy composition is provided, it comprises:
-at least a by weight greater than 0 to 25% platinum and palladium;
-10% to 16% gold by weight;
-32% to 75% silver by weight; With
-at least a 0 to 4% additional alloying element by weight; And
-described white noble metal alloy composition is made for finished product.
17. method according to claim 16, wherein, described white noble metal alloy composition is not nickeliferous.
18. a white noble metal alloy composition comprises:
-at least a by weight greater than 0 to 25% platinum and palladium;
-10% to 19% gold by weight;
-32% to 75% silver by weight; And
-at least a 0 to 4% additional alloying element by weight.
19. white noble metal alloy composition according to claim 18, wherein, described white noble metal alloy composition comprises at least a 10% to 20% platinum and palladium by weight.
20. white noble metal alloy composition according to claim 18, wherein, described white noble metal alloy composition is not nickeliferous.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| US85267606P | 2006-10-19 | 2006-10-19 | |
| US60/852,676 | 2006-10-19 |
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| CN101100711A true CN101100711A (en) | 2008-01-09 |
| CN101100711B CN101100711B (en) | 2010-10-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243230A (en) * | 2013-04-08 | 2013-08-14 | 何文金 | White noble metal alloy composition |
| CN103484745A (en) * | 2013-09-10 | 2014-01-01 | 昆明贵金属研究所 | Gold-palladium-silver alloy system corrosion-resistant material for granular caustic soda industries and preparation method thereof |
| CN105063408A (en) * | 2015-08-17 | 2015-11-18 | 广州番禺职业技术学院 | Silver alloy for high-temperature enamel inlaid jewelry |
| 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 |
| CN115637366A (en) * | 2021-06-10 | 2023-01-24 | 周生生珠宝金行有限公司 | Jewelry alloy |
-
2007
- 2007-08-20 CN CN2007101422227A patent/CN101100711B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243230A (en) * | 2013-04-08 | 2013-08-14 | 何文金 | White noble metal alloy composition |
| CN103484745A (en) * | 2013-09-10 | 2014-01-01 | 昆明贵金属研究所 | Gold-palladium-silver alloy system corrosion-resistant material for granular caustic soda industries and preparation method thereof |
| CN105063408A (en) * | 2015-08-17 | 2015-11-18 | 广州番禺职业技术学院 | Silver alloy for high-temperature enamel inlaid jewelry |
| CN105063408B (en) * | 2015-08-17 | 2020-02-07 | 广州番禺职业技术学院 | Silver alloy for high-temperature enamel inlaid jewelry |
| 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 |
| CN115637366A (en) * | 2021-06-10 | 2023-01-24 | 周生生珠宝金行有限公司 | Jewelry alloy |
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| Publication number | Publication date |
|---|---|
| CN101100711B (en) | 2010-10-20 |
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