CN105087997A - Red gold alloy used for firing high-temperature transparent enamel and preparing method of red gold alloy - Google Patents
Red gold alloy used for firing high-temperature transparent enamel and preparing method of red gold alloy Download PDFInfo
- Publication number
- CN105087997A CN105087997A CN201510481972.1A CN201510481972A CN105087997A CN 105087997 A CN105087997 A CN 105087997A CN 201510481972 A CN201510481972 A CN 201510481972A CN 105087997 A CN105087997 A CN 105087997A
- Authority
- CN
- China
- Prior art keywords
- alloy
- red
- copper
- transparent enamel
- firing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Adornments (AREA)
Abstract
The invention discloses red gold alloy used for firing high-temperature transparent enamel and a preparing method of the red gold alloy. The red gold alloy used for firing the high-temperature transparent enamel comprises, by weight, 75.0-75.5% of gold, 22.5-23.2% of copper, 0.9-1.2% of silver, 0.5-0.8% of zinc, 0.2-0.4% of palladium, 0.01-0.03% of silicon, 0.008-0.02% of scandium, 0.0005%-0.001% of boron and other inevitable impurities. The preparing method of the red gold alloy for firing the high-temperature transparent enamel is characterized by comprising the steps that firstly, raw materials are melted under the protective atmosphere; and secondly, after all the materials are melted down, the temperature of molten metal is adjusted, and an ingot casting is obtained through casting. The red gold alloy has good high-temperature oxidation resisting performance, and high-temperature firing can be better borne; the thermal expansion coefficient is close to the thermal expansion coefficient of common gold high-temperature enamel; superior cold machining performance is achieved, and the phenomenon of brittle failures does not occur in the machining process; and grains are fine, the organization is compact, and a highly-polished surface can be obtained.
Description
Technical field
The present invention relates to a kind of for red au-alloy firing temperature resistant transparent enamel and preparation method thereof.
Background technology
In karat gold series, the red gold of K is compared with the platinum of low-key with gorgeous gold, because of the magnificent elegance of its color and luster, becomes and is popular for current international jewellery industry, particularly oriental trend fashion.Insider, according to the color of its uniqueness, gives the name that this kind of material one is romantic, is rose gold, represent the theme that the mankind are eternal---love.Enamel technique applies on rose gold jewellery, significantly can increase the artistic effect of jewellery, but adopt rose gold common on the market as when firing the substrate of high temperature enamel, often run into several distinct issues: one is that alloy material is very serious through the oxidation of high-temperature firing rear surface, affect the decorative effect of enamel, as Fig. 1; Two is that metal base after firing enamel becomes fragile, in follow-up polishing, process such as edge stone, polishing etc., easily occur fracture, when embrittlement is serious, alloy is easy to break just as dried firewood, as Fig. 2, completely not like the precious metal alloys that toughness plasticity is excellent, produce to jewellery and bring very large puzzlement and difficulty; Three is that rose gold jewellery are using or placing for some time, and surface is dark and gloomy and variable color easily, without initial brightness and color and luster; Four is when casting rose gold jewellery, and often run into surperficial shrinkage porosite problem, the severe exacerbation surface quality of ornaments, as Fig. 3.Especially substrate fill out glaze paint there is shrinkage porosite time, the decorative effect of enamel can be had a strong impact on, cause enamel layer muddy stain or explosion.When large-scale shrinkage porosite problem appears in jewellery, as passed through welding or sanding and polishing process, workload is very large, and both time-consuming, effect is poor again, only has and scrapped by gadget time many, have impact on production schedule and the cost of enterprise.
Summary of the invention
The object of the present invention is to provide a kind of for red au-alloy firing temperature resistant transparent enamel and preparation method thereof.
The technical solution used in the present invention is:
A kind of red au-alloy for firing temperature resistant transparent enamel, it consists of the following composition: 75.0-75.5wt% gold, 22.5-23.2wt% copper, 0.9-1.2wt% silver, 0.5-0.8wt% zinc, 0.2-0.4wt% palladium, 0.01-0.03wt% silicon, 0.008-0.02wt% scandium, 0.0005-0.001wt% boron, and other inevitable impurity.
It is made up of the raw material of following mass percent: 1-2wt% copper scandium alloy, 5-8wt% copper palldium alloy, 0-11wt% yellow gold, 0-1wt% silver zinc alloy, 1-3wt% cupro silicon, 0-1wt% fine silver, 4.5-11.5wt% copper zinc alloy, 0.4-0.5wt% Cu-B alloy, 2-7wt% fine copper, 75.0-75.5wt% proof gold.
In described yellow gold, the content of silver is 5wt%.
In described copper palldium alloy, the content of palladium is 5wt%.
In described copper scandium alloy, the content of scandium is 1wt%.
In described cupro silicon, the content of silicon is 1wt%; In silver zinc alloy, the content of zinc is 30wt%.
The preparation method of the described red au-alloy for firing temperature resistant transparent enamel, step is:
1) raw material is carried out melting under protective atmosphere;
2) material all melting down after, the temperature of adjustment molten metal, casting obtains ingot casting;
3) by after ingot casting roll compacting, annealing.
In step 1), described protective atmosphere is industrial straight argon.
In step 1), in induction furnace, carry out melting, smelting temperature is 1020-1040 DEG C.
Step 2) in, the temperature of adjustment molten metal is to 1010-1030 DEG C.
The invention has the beneficial effects as follows:
(1) red au-alloy of the present invention has good high temperature oxidation resistance, can bear high-temperature firing better, and the transparent enamel layer fired has good bright degree, and crystal grain is not grown up after repeatedly firing for several times.
(2) thermal expansivity of red au-alloy of the present invention and the thermal expansivity of common gold high melting glaze close, make the enamel layer after firing comparatively stable, not easily occur that explosion such as to peel off at the problem.
(3) red au-alloy of the present invention has excellent cold-forming property, does not occur brittle failure phenomenon in the course of processing.
(4) red au-alloy crystal grain of the present invention is tiny, and dense structure is conducive to obtaining press polished surface.
Accompanying drawing explanation
Fig. 1 is commercially available 18K rose gold highly oxidized pictorial diagram when firing enamel;
Fig. 2 is the pictorial diagram occurring brittle failure after commercially available 18K rose gold fires enamel in bruting process;
Fig. 3 is the pictorial diagram of commercially available 18K rose gold surface shrinkage porosite;
Fig. 4 is the microstructure (300 ×) of the red au-alloy of 18K of the present invention;
Fig. 5 is the polarization curve of the red au-alloy of 18K of the present invention in 37 DEG C of synthetic perspirations;
Fig. 6 is that the red au-alloy of 18K of the present invention soaks the reflectance curve after 1 hour in sodium sulfide solution;
Fig. 7 is the oxide film situation comparison diagram (200 ×) after the red au-alloy of 18K of the present invention and the red au-alloy of commercially available 18K heat 1.5 hours at 750 DEG C;
Fig. 8 is the temperature thermal dilatometry of the red au-alloy of 18K of the present invention;
Fig. 9 is the cold hardening curve of the red au-alloy of 18K of the present invention.
Embodiment
A kind of red au-alloy for firing temperature resistant transparent enamel, it consists of the following composition: 75.0-75.5wt% gold, 22.5-23.2wt% copper, 0.9-1.2wt% silver, 0.5-0.8wt% zinc, 0.2-0.4wt% palladium, 0.01-0.03wt% silicon, 0.008-0.02wt% scandium, 0.0005-0.001wt% boron, and other inevitable impurity.
It is made up of the raw material of following mass percent: 1-2wt% copper scandium alloy, 5-8wt% copper palldium alloy, 0-11wt% yellow gold, 0-1wt% silver zinc alloy, 1-3wt% cupro silicon, 0-1wt% fine silver, 4.5-11.5wt% copper zinc alloy, 0.4-0.5wt% Cu-B alloy, 2-7wt% fine copper, 75.0-75.5wt% proof gold.
Preferably, in the raw material that the present invention's (comprising embodiment) is used: in described yellow gold, the content of silver is 5wt%; In described copper palldium alloy, the content of palladium is 5wt%; In described copper scandium alloy, the content of scandium is 1wt%; In described cupro silicon, the content of silicon is 1wt%; In silver zinc alloy, the content of zinc is 30wt%.
The preparation method of the described red au-alloy for firing temperature resistant transparent enamel, step is:
1) raw material is carried out melting under protective atmosphere;
2) material all melting down after, the temperature of adjustment molten metal, casting obtains ingot casting;
3) by after ingot casting roll compacting, annealing.
Preferably, in step 1), described protective atmosphere is industrial straight argon.
Preferably, step 1) is: proof gold is rolled into thin slice, wraps up silver-colored scandium alloy, silver palladium alloy, yellow gold, copper zinc alloy, cupro silicon, fine silver, put into plumbago crucible with it, under protective atmosphere, utilize induction heating to carry out melting, smelting temperature is 1020-1040 DEG C;
Preferably, step 2) in, the temperature of adjustment molten metal is to 1010-1030 DEG C.
Preferably, anneal is: anneal 3-10 minute at 700-800 DEG C.
Below in conjunction with specific embodiment, the present invention is described further:
embodiment 1:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.20wt% gold, 22.87wt% copper, 1.07wt% silver, 0.53wt% zinc, 0.30wt% palladium, 0.015wt% silicon, 0.013wt% scandium, 0.0008wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 1.3wt% copper scandium alloy, 6wt% copper palldium alloy, 7.3wt% Kufil, 1.5wt% cupro silicon, 0.7wt% fine silver, 7.6wt% copper zinc alloy, 0.4wt% Cu-B alloy, 75.2wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 4.4Pa, is filled with industrial straight argon to 1.01atm.Start induction heating and carry out melting, smelting temperature is 1030-1040 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1020-1030 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
There is not obvious shrinkage defect in the red au-alloy of the 18K that the present embodiment obtains, annealed state microstructure is as Fig. 4, and alloy structure is fine and close tiny equiax crystal, and this is conducive to strength property and the polishing performance of material.
The priming color coordinate figure L* of the red au-alloy of the 18K that the present embodiment obtains, a*, b* are respectively 85.93,9.94 and 16.21, are positioned at the red au-alloy region of look district figure, show as good redness.The polarization behavior of this enforcement alloy in 37 DEG C of synthetic perspirations is as Fig. 5, and alloy there occurs obvious passivation in electric potential scanning process, causes blunt current potential higher.Alloy suspension is immersed in the sodium sulfide solution that concentration is 5%, temperature is 30 DEG C and carries out corrosion test, etch is after 1 hour, its priming color seems partially red partially yellow relatively, brightness declines, reflectivity does not have change clearly, as Fig. 6, do not show naked eyes perceived color difference, show that alloy has good corrosion resisting property and discoloration-resisting.
Oxide film situation after the red au-alloy of the 18K that the present embodiment obtains and the red au-alloy of commercially available 18K heat 1.5 hours at 750 DEG C is to such as Fig. 7; the oxidation film layer of alloy of the present invention is very thin; compact structure; play effective provide protection; interior metal is stoped to continue oxidation; embody good high temperature oxidation resistance, and the oxidation film layer of commercial alloys is obviously thick than the present invention alloy.
The temperature of fusion scope of the red au-alloy of 18K of the present invention is 905-918 DEG C, can bear the firing temperature of enamel preferably.Be between 38-828 DEG C in temperature, the temperature thermal dilatometry of alloy is as shown in Figure 8, close with the thermal expansivity of common gold high temperature glaze, is thus conducive to the combination of glassy surface and substrate, the problem such as is not easy to occur explosion or peel off.
The 18K that the present embodiment obtains red au-alloy annealed state hardness is HV185, and cold working curve, as Fig. 9, shows good processing characteristics, does not occur brittle failure phenomenon.
The red au-alloy of 18K of the present invention is as the transparent enamel set jewelry of substrate fabrication, and the transparency of enamel layer is high, and the clean mark of substrate is visible, and bubble is few, stablizes with the combination of substrate, and the jewel inlayed is firm.
embodiment 2:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.0wt% gold, 1.13wt% are silver-colored, 23.06wt% copper, 0.51wt% zinc, 0.26wt% palladium, 0.028wt% silicon, 0.020wt% scandium, 0.0010wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 2wt% copper scandium alloy, 5.1wt% copper palldium alloy, 6.5wt% Kufil, 2.8wt% cupro silicon, 0.8wt% fine silver, 7.3wt% copper zinc alloy, 0.5wt% Cu-B alloy, 75.0wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 4.7Pa, is filled with industrial straight argon to 1.02atm.Start induction heating and carry out melting, smelting temperature is 1020-1030 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1010-1020 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
embodiment 3:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.5wt% gold, 0.90wt% are silver-colored, 22.64wt% copper, 0.60wt% zinc, 0.30wt% palladium, 0.030wt% silicon, 0.016wt% scandium, 0.0010wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 1.6wt% copper scandium alloy, 6wt% copper palldium alloy, 4wt% Kufil, 3wt% cupro silicon, 0.7wt% fine silver, 8.7wt% copper zinc alloy, 0.5wt% Cu-B alloy, 75.5wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 4.8Pa, is filled with industrial straight argon to 1.0atm.Start induction heating and carry out melting, smelting temperature is 1030-1040 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1020-1030 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
embodiment 4:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.10wt% gold, 0.97wt% are silver-colored, 23.18wt% copper, 0.50wt% zinc, 0.20wt% palladium, 0.027wt% silicon, 0.015wt% scandium, 0.0008wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 1.5wt% copper scandium alloy, 4wt% copper palldium alloy, 11wt% Kufil, 0.6wt% silver zinc alloy, 2.7wt% cupro silicon, 4.7wt% copper zinc alloy, 0.4wt% Cu-B alloy, 75.1wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 4.6Pa, is filled with industrial straight argon to 0.99atm.Start induction heating and carry out melting, smelting temperature is 1020-1030 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1010-1020 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
embodiment 5:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.40wt% gold, 0.90wt% are silver-colored, 22.51wt% copper, 0.78wt% zinc, 0.39wt% palladium, 0.010wt% silicon, 0.011wt% scandium, 0.0008wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 1.1wt% copper scandium alloy, 7.7wt% copper palldium alloy, 1wt% cupro silicon, 0.9wt% fine silver, 11.2wt% copper zinc alloy, 0.4wt% Cu-B alloy, 2.3wt% fine copper, 75.4wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 5.0Pa, is filled with industrial straight argon to 1.0atm.Start induction heating and carry out melting, smelting temperature is 1030-1040 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1020-1030 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
embodiment 6:
The red au-alloy for firing high temperature enamel of the present embodiment, is made up of following ingredients by mass percentage:
75.30wt% gold, 0.95wt% are silver-colored, 22.92wt% copper, 0.55wt% zinc, 0.25wt% palladium, 0.014wt% silicon, 0.010wt% scandium, 0.0010wt% boron, and other inevitable impurity.
The preparation method of the present embodiment comprises the following steps:
In vacuum induction furnace, carry out melting, the mass percent of described raw material is respectively: 1wt% copper scandium alloy, 5wt% copper palldium alloy, 1wt% Kufil, 1.4wt% cupro silicon, 0.9wt% fine silver, 8wt% copper zinc alloy, 0.5wt% Cu-B alloy, 6.9wt% fine copper, 75.3wt% proof gold.Above-mentioned materials is put into plumbago crucible successively, and filling is closely knit and close bell, is evacuated down to 4.8Pa, is filled with industrial straight argon to 1.0atm.Start induction heating and carry out melting, smelting temperature is 1020-1030 DEG C.After furnace charge is all melting down, adjustment molten metal temperature is 1010-1020 DEG C, by ingot casting obtained in pouring metal melt to ingot mold.After ingot casting roll compacting, 750 DEG C of annealing 5 minutes.
Claims (10)
1. one kind for firing the red au-alloy of temperature resistant transparent enamel, it is characterized in that: it consists of the following composition: 75.0-75.5wt% gold, 22.5-23.2wt% copper, 0.9-1.2wt% silver, 0.5-0.8wt% zinc, 0.2-0.4wt% palladium, 0.01-0.03wt% silicon, 0.008-0.02wt% scandium, 0.0005-0.001wt% boron, and other inevitable impurity.
2. a kind of red au-alloy for firing temperature resistant transparent enamel according to claim 1, is characterized in that: it is made up of the raw material of following mass percent: 1-2wt% copper scandium alloy, 5-8wt% copper palldium alloy, 0-11wt% yellow gold, 0-1wt% silver zinc alloy, 1-3wt% cupro silicon, 0-1wt% fine silver, 4.5-11.5wt% copper zinc alloy, 0.4-0.5wt% Cu-B alloy, 2-7wt% fine copper, 75.0-75.5wt% proof gold.
3. a kind of red au-alloy for firing temperature resistant transparent enamel according to claim 2, is characterized in that: in described yellow gold, and the content of silver is 5wt%.
4. a kind of red au-alloy for firing temperature resistant transparent enamel according to claim 2, is characterized in that: in described copper palldium alloy, and the content of palladium is 5wt%.
5. a kind of red au-alloy for firing temperature resistant transparent enamel according to claim 2, is characterized in that: in described copper scandium alloy, and the content of scandium is 1wt%.
6. a kind of red au-alloy for firing temperature resistant transparent enamel according to claim 2, is characterized in that: in described cupro silicon, and the content of silicon is 1wt%; In silver zinc alloy, the content of zinc is 30wt%.
7. the preparation method of the red au-alloy for firing temperature resistant transparent enamel according to any one of claim 1-6, is characterized in that: step is:
1) raw material is carried out melting under protective atmosphere;
2) material all melting down after, the temperature of adjustment molten metal, casting obtains ingot casting;
3) by after ingot casting roll compacting, annealing.
8. the preparation method of the red au-alloy for firing temperature resistant transparent enamel according to claim 7, is characterized in that: in step 1), and described protective atmosphere is industrial straight argon.
9. the preparation method of the red au-alloy for firing temperature resistant transparent enamel according to claim 7, is characterized in that: in step 1), in induction furnace, carries out melting, and smelting temperature is 1020-1040 DEG C.
10. the preparation method of the red au-alloy for firing temperature resistant transparent enamel according to claim 7, is characterized in that: step 2) in, the temperature of adjustment molten metal is to 1010-1030 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481972.1A CN105087997B (en) | 2015-08-07 | 2015-08-07 | A kind of red billon and preparation method thereof for firing temperature resistant transparent enamel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481972.1A CN105087997B (en) | 2015-08-07 | 2015-08-07 | A kind of red billon and preparation method thereof for firing temperature resistant transparent enamel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105087997A true CN105087997A (en) | 2015-11-25 |
| CN105087997B CN105087997B (en) | 2019-07-23 |
Family
ID=54569317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510481972.1A Active CN105087997B (en) | 2015-08-07 | 2015-08-07 | A kind of red billon and preparation method thereof for firing temperature resistant transparent enamel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105087997B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370848A (en) * | 2019-07-23 | 2019-10-25 | 江苏贲泰珐琅文化有限公司 | Transparent enamel method is sintered in the copper tire of production cloisonne enamel and copper wire surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5340529A (en) * | 1993-07-01 | 1994-08-23 | Dewitt Troy C | Gold jewelry alloy |
| EP0978572A1 (en) * | 1998-08-01 | 2000-02-09 | C. HAFNER GmbH & Co. | Gold base alloy for jewellery |
| CN103695692A (en) * | 2013-12-11 | 2014-04-02 | 广州番禺职业技术学院 | High-purity high-hardness alloy material and preparation method thereof |
| CN104011235A (en) * | 2011-11-08 | 2014-08-27 | 斯沃奇集团研究和开发有限公司 | Gold Timepiece Or Jewellery Part |
-
2015
- 2015-08-07 CN CN201510481972.1A patent/CN105087997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5340529A (en) * | 1993-07-01 | 1994-08-23 | Dewitt Troy C | Gold jewelry alloy |
| EP0978572A1 (en) * | 1998-08-01 | 2000-02-09 | C. HAFNER GmbH & Co. | Gold base alloy for jewellery |
| CN104011235A (en) * | 2011-11-08 | 2014-08-27 | 斯沃奇集团研究和开发有限公司 | Gold Timepiece Or Jewellery Part |
| CN103695692A (en) * | 2013-12-11 | 2014-04-02 | 广州番禺职业技术学院 | High-purity high-hardness alloy material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370848A (en) * | 2019-07-23 | 2019-10-25 | 江苏贲泰珐琅文化有限公司 | Transparent enamel method is sintered in the copper tire of production cloisonne enamel and copper wire surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105087997B (en) | 2019-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5793136B2 (en) | Gray gold alloy without nickel and copper | |
| CN101899588B (en) | Nickel-free white copper alloy containing rare earth additional elements and method for manufacturing plates made of same | |
| CN105063409B (en) | Silver alloy and method for preparing high-temperature transparent enamel decorating silver jewelry by using silver alloy | |
| JP4494610B2 (en) | Sputtering target material for thin film formation | |
| CN105063408B (en) | Silver alloy for high-temperature enamel inlaid jewelry | |
| WO2021128434A1 (en) | Easy-to-cut zinc-copper-nickel alloy, preparation method therefor and use thereof | |
| CN105369047B (en) | White gold alloy for high-temperature enamelled jewellery and preparation method of white gold alloy | |
| CN105087997B (en) | A kind of red billon and preparation method thereof for firing temperature resistant transparent enamel | |
| CN115747562B (en) | Ornament copper alloy and preparation method thereof | |
| CN105087996B (en) | It is a kind of for firing the yellow gold alloy and preparation method thereof of temperature resistant transparent enamel | |
| CN103205594B (en) | Palladium-silver alloy material for dental department | |
| CN105420531B (en) | Nickel-free white gold alloy for high-temperature enameled jewelry and preparation method for nickel-free white gold alloy | |
| CN109628792A (en) | A kind of anti-jaundice packfong of soft state high temperature resistant and its production technology | |
| CN102899526B (en) | Coinage-used golden yellow copper alloy material and preparation method thereof | |
| US20120000582A1 (en) | Treatment of boron-containing, platinum group metal-based alloys | |
| CN106566950B (en) | A kind of nickel-beryllium alloy and its manufacture method with high-strength high-elasticity highly corrosion resistant | |
| CN101545029B (en) | Method for improving corrosion performance of bulk amorphous alloy through oxidizing annealing in air atmosphere | |
| KR101741681B1 (en) | Ag-Cu based alloy composition having high anti-discoloration and hardness and the manufacturing method thereof | |
| CN115522099B (en) | Cast white copper ornament material and preparation method thereof | |
| CN108467963A (en) | With big variable ability yellow jewellery palldium alloy and its processing technology | |
| CN115896535B (en) | Copper incense burner material and preparation method thereof | |
| Brelle et al. | Precious palladium-aluminium-based alloys with high hardness and workability | |
| EP3835440A1 (en) | Article superior in design and method for producing the same | |
| JPS5856740B2 (en) | Silver alloy for glazing | |
| CN108728683A (en) | With resistance to brittle failure performance yellow jewellery palldium alloy and its processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |