CN102776406B - Gold alloy and method for preparing same - Google Patents
Gold alloy and method for preparing same Download PDFInfo
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- CN102776406B CN102776406B CN201210268708.6A CN201210268708A CN102776406B CN 102776406 B CN102776406 B CN 102776406B CN 201210268708 A CN201210268708 A CN 201210268708A CN 102776406 B CN102776406 B CN 102776406B
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Abstract
The invention provides a gold alloy and a method for preparing the same, wherein the gold alloy comprises the components of, by weight, 60 to 70 parts of gold, 0.5 to 2 parts of porpezite, 1 to 2 parts of ruthenium, 12 to14 parts of silver, 3 to 5 parts of zinc, 0.5 to 2 parts of aluminum and 10 to 15 parts of pure copper or bronze. The gold alloy and the method for preparing the same can improve the hardness of the gold alloy, change the color of the gold alloy and reduce the preparation cost of the gold alloy.
Description
Technical field
The present invention relates to precious metal processing technique field, relate in particular to a kind of au-alloy and preparation method thereof.
Background technology
Au-alloy is as the existing very long history of material of traditional mode of production gold ornament, the au-alloy adopting of common thousand solid gold jewelries is in 99.99% gold, to add 0.09% silver or copper, its gold content is at least more than 99.9%, hardness is generally softer, the about 72.4HV1 of Vickers' hardness GB/T4340.1-1999, the about 68.9HRF of Rockwell hardness GB/T230.1-2004, the about 19.352g/cm3 of density GB/T1423-1996, therefore thousand pure gold products are easily out of shape, and are not suitable for inlaying jewelry; And the color of thousand pure golds is yellow, in the rose-colored jewellery inadequate fashion that seems popular today; In addition, thousand pure golds are because gold content is higher, and its preparation cost is also higher.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of au-alloy and preparation method thereof, can improve hardness and the resistance of oxidation of au-alloy, changes the color of au-alloy.
For solving the problems of the technologies described above, the object of the invention is to be achieved through the following technical solutions:
The embodiment of the present invention provides a kind of au-alloy, and the component of this au-alloy represents by weight, comprising:
The gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts.
The embodiment of the present invention also provides a kind of preparation method of au-alloy, comprising:
Getting parts by weight is the gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts;
Parts by weight are put into molten gold pot for, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, this molten gold pot is heated;
After the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 60～70 parts, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts, molten gold pot is proceeded to heating, until all fusings of yellow gold and silver, zinc, aluminium, red metal or bronze of putting in molten gold pot obtain alloy solution;
Pour the alloy solution in molten gold pot into graphite cuvette, after cooling 20～30 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
In the au-alloy that the embodiment of the present invention provides, because the porpezite after high temperature melting, ruthenium, silver, zinc, aluminium, red metal or bronze play the effect of variable color to gold solution, the au-alloy that makes to make is rendered as rose-red, therefore with respect to thousand pure golds, has increased stylishness; Simultaneously, after testing, the about 79.78HRB of au-alloy Rockwell hardness GB/T230.1-2009 that the embodiment of the present invention provides, the about 171.16HV1 of Vickers' hardness GB/T4340.1-2009, the about 13.79g/cm3 of density GB/T1423-1996, visible hardness is higher than the hardness of thousand pure golds, thereby improved the hardness of au-alloy; In addition, in the au-alloy that the embodiment of the present invention provides, the content of gold is about 60% to 70%, compares thousand pure gold preparation costs lower.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope that the present invention protects.
Au-alloy provided by the invention, comprises following embodiment:
Embodiment one,
The au-alloy that embodiment one provides, its component represents by weight, following material, consists of:
The gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts.
Embodiment one being enumerated to embodiment below describes:
Embodiment mono-,
The au-alloy that the embodiment of the present invention one provides is comprised of following material:
The gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 1 part, the silver of 14 parts, the zinc of 4 parts, the aluminium of 1 part, red metal or the bronze of 12.34 parts.
The au-alloy that this embodiment mono-provides, the weight percent of each component is:
Gold accounts for 66.66%, porpezite accounts for 1.0%, ruthenium accounts for 1.0%, silver accounts for 14.0%, zinc accounts for 4.0%, and aluminium accounts for 1.0%, and red metal or bronze account for 12.34%.
In the embodiment of the present invention, by add porpezite, ruthenium, silver, zinc, aluminium, copper in gold, gold is changed to color, the au-alloy color that makes to obtain is rendered as rose-red, with respect to traditional yellow, has increased stylishness; In addition, after testing, the about 79.78HRB of au-alloy Rockwell hardness GB/T230.1-2009 that the present embodiment provides, the about 171.16HV1 of Vickers' hardness GB/T4340.1-2009, the about 13.79g/cm3 of density GB/T1423-1996, the about 72.4HV1 of the visible Vickers' hardness GB/T4340.1-1999 with respect to thousand pure golds, the about 68.9HRF of Rockwell hardness GB/T230.1-2004, improved the hardness of au-alloy; In addition, gold accounts for 66.66% in au-alloy, has reduced preparation cost and the cost of gold product, and simultaneously, due to 6 lucky meanings in traditional Chinese culture, 4 " 6 " more seem to have special meaning; Finally, in the present embodiment, owing to having added 1% aluminium, the au-alloy that makes to make is compared thousand pure golds and is had stronger antioxygenation.
Embodiment one can also be realized by following examples, and experiment shows, the au-alloy that following embodiment provides, and color is rose-red, Vickers' hardness is greater than 72.4HV1; Rockwell hardness is greater than 68.9HRF.
Embodiment bis-,
The gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 2 parts, the silver of 13 parts, the zinc of 3 parts, the aluminium of 1 part, red metal or the bronze of 13.34 parts.
Embodiment tri-,
The gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 1 part, the silver of 13 parts, the zinc of 4 parts, the aluminium of 2 parts, red metal or the bronze of 12.34 parts.
Embodiment tetra-,
The gold of 66.66 parts, the porpezite of 2 parts, the ruthenium of 1 part, the silver of 14 parts, the zinc of 3 parts, the aluminium of 2 parts, red metal or the bronze of 11.34 parts.
Embodiment five,
The gold of 60 parts, the porpezite of 2 parts, the ruthenium of 2 parts, the silver of 14 parts, the zinc of 5 parts, the aluminium of 2 parts, red metal or the bronze of 15 parts.
Embodiment six,
The gold of 70 parts, the porpezite of 0.5 part, the ruthenium of 1 part, the silver of 12 parts, the zinc of 3 parts, the aluminium of 0.5 part, red metal or the bronze of 10 parts.
Present embodiment provides the part embodiment of au-alloy, in concrete implementation process, according to the parts by weight scope of each component in au-alloy, can also list other embodiment, herein particularize no longer.
Real-time mode two,
The au-alloy that embodiment two provides, its component represents by weight, following material, consists of:
He Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of the gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, the red metal of 10～15 parts or bronze and 1～10 part.
Wherein, congratulating Li Shi repaired mouth H-126 or H-89A is two kinds of models.
Embodiment two being enumerated to embodiment below describes:
Embodiment mono-,
The au-alloy that this embodiment mono-provides, is comprised of following material:
He Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of the gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 2 parts, the silver of 12 parts, the zinc of 3 parts, the aluminium of 1 part, the red metal of 13.34 parts or bronze and 1 part.
In the au-alloy that the present embodiment one provides, the weight percent of each component is:
Gold accounts for 66.66%, porpezite accounts for 1.0%, ruthenium accounts for 2.0%, silver accounts for 12.0%, zinc accounts for 3.0%, aluminium accounts for 1.0%, and copper accounts for 13.34%, and all the other are for congratulating Li Shi repaired mouth H-126 or H-89A.
In the embodiment of the present invention, by add porpezite, ruthenium, silver, zinc in gold, aluminium, copper and he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 change color to gold, the au-alloy color that makes to obtain is rendered as rose-red, with respect to traditional yellow, has increased stylishness; In addition, after testing, the about 79.78HRB of au-alloy Rockwell hardness GB/T230.1-2009 that the present embodiment provides, the about 171.16HV1 of Vickers' hardness GB/T4340.1-2009, the about 13.79g/cm3 of density GB/T1423-1996, the about 72.4HV1 of the visible Vickers' hardness GB/T4340.1-1999 with respect to thousand pure golds, the about 68.9HRF of Rockwell hardness GB/T230.1-2004, improved the hardness of au-alloy; In addition, gold accounts for 66.66% in au-alloy, has reduced preparation cost and the cost of gold product, and simultaneously, due to 6 lucky meanings in traditional Chinese culture, 4 " 6 " more seem to have special meaning; Finally, in the present embodiment, owing to having added 1% aluminium, the au-alloy that makes to make is compared thousand pure golds and is had stronger antioxygenation.
Embodiment two can also be realized by following examples, and experiment shows, the au-alloy that following embodiment provides, and color is rose-red, Vickers' hardness is greater than 72.4HV1; Rockwell hardness is greater than 68.9HRF.
Embodiment bis-,
The gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 1 part, the silver of 12 parts, the zinc of 3 parts, the aluminium of 1 part, the red metal of 14.34 parts or bronze, he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of 1 part.
Embodiment tri-,
The gold of 66.66 parts, the porpezite of 2 parts, the ruthenium of 2 parts, the silver of 14 parts, the zinc of 3 parts, the aluminium of 1 part, the red metal of 10.34 parts or bronze, he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of 1 part.
Embodiment tetra-,
The gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 2 parts, the silver of 12 parts, the zinc of 5 parts, the aluminium of 1 part, the red metal of 11.34 parts or bronze, he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of 1 part.
Embodiment five,
The gold of 60 parts, the porpezite of 2 parts, the ruthenium of 2 parts, the silver of 14 parts, the zinc of 5 parts, the aluminium of 2 parts, red metal or the bronze of 15 parts, and the he Li Shi repaired mouth H-126 of 10 parts or H-89A or golden warrier's repaired mouth 1202.
Embodiment six,
The gold of 70 parts, the porpezite of 0.5 part, the ruthenium of 1 part, the silver of 12 parts, the zinc of 3 parts, the aluminium of 0.5 part, red metal or the bronze of 10 parts, and the he Li Shi repaired mouth H-126 of 1 part or H-89A or golden warrier's repaired mouth 1202.
Present embodiment provides the part embodiment of au-alloy, in concrete implementation process, according to the parts by weight scope of each component in au-alloy, can also list other embodiment, herein particularize no longer.
The au-alloy above embodiment of the present invention being provided is described, and embodiment of the present invention also provides the preparation method of au-alloy.
The preparation method of the au-alloy that embodiment of the present invention one provides, comprising:
(1) getting parts by weight is the gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts.
(2) by parts by weight, be that the porpezite of 0.5～2 part, the ruthenium of 1～2 part are put into molten gold pot, this molten gold pot is heated.
(3), after the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 60～70 parts, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, red metal or the bronze of 10～15 parts.
(4) molten gold pot is proceeded to heating, until all fusings of yellow gold and silver, zinc, aluminium, red metal or bronze of putting in molten gold pot obtain alloy solution.
(5) pour the alloy solution in molten gold pot into graphite cuvette, after cooling 20～30 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
The preparation method of the au-alloy below embodiment of the present invention one being provided, enumerates embodiment and describes:
Embodiment mono-,
The preparation method of the au-alloy that the embodiment of the present invention one provides comprises:
(1) getting parts by weight is the gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 2 parts, the silver of 11 parts, the zinc of 5 parts, the aluminium of 1 part, red metal or the bronze of 13.34 parts.
(2) respectively the various metals of getting are put into the beaker that distilled water is housed and boiled 10 minutes except degreasing.
Wherein, also can respectively the various metals of getting be put into the beaker that distilled water is housed and boil 12 or 15 minutes except degreasing.
(3) respectively the metal except degreasing is taken out to cleaning, drying in beaker, put into clean utensil.
(4) by parts by weight, be that the porpezite of 1 part, the ruthenium of 2 parts are put into molten gold pot, this molten gold pot is heated.
(5), after the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 66.66 parts, the silver of 11 parts, the zinc of 5 parts, the aluminium of 1 part, red metal or the bronze of 13.34 parts.
(6) molten gold pot is proceeded to heating, until all fusings of yellow gold and silver, zinc, aluminium, red metal or bronze of putting in molten gold pot obtain alloy solution.
(7) pour the alloy solution in molten gold pot into graphite cuvette, after cooling 25 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
Wherein, also can pour the alloy solution in molten gold pot into graphite cuvette, cooling 20 minutes or 30 minutes at normal temperatures.
Wherein, graphite cuvette is rectangular groove.
Experiment shows, the au-alloy that adopts this embodiment to prepare, due to the porpezite after high temperature melting, ruthenium, silver, zinc, aluminium, to gold solution, play the effect that changes color, the au-alloy that makes to make is rendered as rose-red, therefore with respect to thousand pure golds, has increased stylishness; In addition, after testing, the about 79.78HRB of au-alloy Rockwell hardness GB/T230.1-2009 that the embodiment of the present invention provides, the about 171.16HV1 of Vickers' hardness GB/T4340.1-2009, the about 13.79g/cm3 of density GB/T1423-1996, visible hardness is higher than the hardness of thousand pure golds, thereby improved the hardness of au-alloy; In addition, gold accounts for 66.66% in au-alloy, has reduced preparation cost and the cost of gold product, and simultaneously, due to 6 lucky meanings in traditional Chinese culture, 4 " 6 " more seem to have special meaning; Finally, in the present embodiment, owing to having added 1% aluminium, the au-alloy that makes to make is compared thousand pure golds and is had stronger antioxygenation.
Be understandable that, in specific implementation process, according to the au-alloy that in embodiment of the present invention one, other embodiment provide, and the temperature range in preparation process, time range, can also list other embodiment, repeat no more herein.
The preparation method of the au-alloy that embodiment of the present invention two provides, comprising:
(1) getting parts by weight is the gold of 60～70 parts, the porpezite of 0.5～2 part, the ruthenium of 1～2 part, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part, the red metal of 10～15 parts or he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of bronze and 1-10 part.
(2) respectively the various metals of getting are put into the beaker that distilled water is housed and boiled 10 to 15 minutes except degreasing.
(3) respectively the metal except degreasing is taken out to cleaning, drying in beaker, put into clean utensil.
(4) by parts by weight, be 0.5～2 part porpezite, 1～2 part ruthenium, 1-10 part he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202, put into molten gold pot, this molten gold pot is heated.
(5), after the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 60～70 parts, the silver of 12～14 parts, the zinc of 3～5 parts, the aluminium of 0.5～2 part and red metal or the bronze of 10～15 parts.
(6) molten gold pot is proceeded to heating, until yellow gold and silver, zinc, aluminium and the red metal put in molten gold pot or all fusings of bronze obtain alloy solution.
(7) pour the alloy solution in molten gold pot into graphite cuvette, after cooling 20～30 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
The preparation method of the au-alloy below embodiment of the present invention two being provided, enumerates embodiment and describes:
Embodiment mono-,
The preparation method of the au-alloy that the embodiment of the present invention one provides comprises:
(1) getting parts by weight is the gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 1 part, the silver of 13 parts, the zinc of 1 part, the aluminium of 1 part, the red metal of 14.34 parts or bronze, he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of 2 parts.
(2) respectively the various metals of getting are put into the beaker that distilled water is housed and boiled 10 minutes except degreasing.
Wherein, also can respectively the various metals of getting be put into the beaker that distilled water is housed and boil 12 or 15 minutes except degreasing.
(3) respectively the metal except degreasing is taken out to cleaning, drying in beaker, put into clean utensil.
(4) by parts by weight, be the porpezite of 1 part, the ruthenium of 1 part and he Li Shi repaired mouth H-126 or H-89A or golden warrier's repaired mouth 1202 of 2 parts, put into molten gold pot, this molten gold pot is heated.
(5), after the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 66.66 parts, the silver of 13 parts, the zinc of 1 part, the aluminium of 1 part and red metal or the bronze of 14.34 parts.
(6) molten gold pot is proceeded to heating, until yellow gold and silver, zinc, aluminium and the red metal put in molten gold pot or all fusings of bronze obtain alloy solution.
(7) pour the alloy solution in molten gold pot into graphite cuvette, after cooling 25 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
Wherein, also can pour the alloy solution in molten gold pot into graphite cuvette, cooling 20 minutes or 30 minutes at normal temperatures.
Wherein, graphite cuvette is rectangular groove.
Experiment shows, the au-alloy that adopts this embodiment to prepare, due to the porpezite after high temperature melting, ruthenium, silver, zinc, aluminium, to gold solution, play the effect that changes color, the au-alloy that makes to make is rendered as rose-red, therefore with respect to thousand pure golds, has increased stylishness; In addition, after testing, the about 79.78HRB of au-alloy Rockwell hardness GB/T230.1-2009 that the embodiment of the present invention provides, the about 171.16HV1 of Vickers' hardness GB/T4340.1-2009, the about 13.79g/cm3 of density GB/T1423-1996, visible hardness is higher than the hardness of thousand pure golds, thereby improved the hardness of au-alloy; In addition, gold accounts for 66.66% in au-alloy, has reduced preparation cost and the cost of gold product, and simultaneously, due to 6 lucky meanings in traditional Chinese culture, 4 " 6 " more seem to have special meaning; Finally, in the present embodiment, owing to having added 1% aluminium, the au-alloy that makes to make is compared thousand pure golds and is had stronger antioxygenation.
Be understandable that, in concrete implementation process, according to the au-alloy that in embodiment of the present invention two, other embodiment provide, and the temperature range in preparation process, time range, can also list other embodiment, repeat no more herein.
Above embodiment provided by the present invention is described in detail, has applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (5)
1. an au-alloy, is characterized in that, in described au-alloy, the weight percent of each component is:
Gold accounts for 66.66%, porpezite accounts for 1.0%, ruthenium accounts for 1.0%, silver accounts for 14.0%, zinc accounts for 4.0%, and aluminium accounts for 1.0%, and red metal accounts for 12.34%.
2. an au-alloy, is characterized in that, in described au-alloy, the weight percent of each component is:
Gold accounts for 66.66%, porpezite accounts for 1.0%, ruthenium accounts for 2.0%, silver accounts for 12.0%, zinc accounts for 3.0%, aluminium accounts for 1.0%, and red metal accounts for 13.34%, and all the other are for congratulating Li Shi repaired mouth H-126 or H-89A.
3. a preparation method for au-alloy, is characterized in that, comprising:
Getting parts by weight is the gold of 66.66 parts, the porpezite of 1 part, the ruthenium of 1 part, the silver of 14 parts, the zinc of 4 parts, the aluminium of 1 part, the red metal of 12.34 parts;
By parts by weight, be that the porpezite of 1 part, the ruthenium of 1 part are put into molten gold pot, this molten gold pot is heated;
After the metal of putting into molten gold pot all melts, in molten gold pot, putting into parts by weight is the gold of 66.66 parts, the silver of 14 parts, the zinc of 4 parts, the aluminium of 1 part, the red metal of 12.34 parts, molten gold pot is proceeded to heating, until yellow gold and silver, zinc, aluminium, the red metal put in molten gold pot all melt, obtain alloy solution;
Pour the alloy solution in molten gold pot into graphite cuvette, after cooling 20～30 minutes at normal temperatures, then put it into and in tank, be cooled to normal temperature.
4. method according to claim 3, is characterized in that, described by parts by weight, be, before the porpezite of 1 part, the ruthenium of 1 part are put into molten gold pot, also to comprise:
Respectively the various metals of getting are put into the beaker that distilled water is housed and boiled 10 to 15 minutes except degreasing;
Respectively the metal except degreasing is taken out to cleaning, drying in beaker, put into clean utensil.
5. method according to claim 3, is characterized in that, described graphite cuvette is rectangular groove.
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| EP3044343B1 (en) * | 2013-09-10 | 2018-12-26 | Apple Inc. | Crystalline gold alloys with improved hardness |
| CN104328302B (en) * | 2014-10-28 | 2016-08-24 | 北海嘉华珠宝有限公司 | A kind of billon |
| CN111621663A (en) * | 2020-07-10 | 2020-09-04 | 深圳市瑜悦珠宝有限公司 | Gold alloy and preparation method thereof |
| CN114717444A (en) * | 2022-03-22 | 2022-07-08 | 东莞市恒泰贵金属科技有限公司 | Preparation method of gold target material |
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| CN101921925A (en) * | 2010-09-08 | 2010-12-22 | 深圳市金福珠宝首饰有限公司 | Gold alloy and preparation method thereof |
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| US8419867B2 (en) * | 2005-05-09 | 2013-04-16 | Hallmark Sweet, Inc. | Gold alloy compositions formed by environmentally friendly process |
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| CN1354803A (en) * | 1999-02-02 | 2002-06-19 | 新加坡理工学院 | Jewellery alloy compositions |
| US6406568B1 (en) * | 2001-08-22 | 2002-06-18 | Leach & Garner Company | 18-karat green gold alloy compositions |
| CN101629253A (en) * | 2009-07-29 | 2010-01-20 | 深圳市金福珠宝首饰有限公司 | Gold alloy and preparation method thereof |
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