WO2006013672A1 - 金合金 - Google Patents
金合金 Download PDFInfo
- Publication number
- WO2006013672A1 WO2006013672A1 PCT/JP2005/009984 JP2005009984W WO2006013672A1 WO 2006013672 A1 WO2006013672 A1 WO 2006013672A1 JP 2005009984 W JP2005009984 W JP 2005009984W WO 2006013672 A1 WO2006013672 A1 WO 2006013672A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gold
- mass
- less
- color tone
- silver
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
- A44C27/001—Materials for manufacturing jewellery
- A44C27/002—Metallic materials
- A44C27/003—Metallic alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Definitions
- the present invention relates to a gold alloy having a color tone suitable for jewelry, excellent workability, and inexpensive.
- pure gold is very soft and weak in mechanical strength, so it can be put into practical use as a alloy with other metals such as silver and copper.
- 18 gold is a typical gold alloy, 75% gold, and the remainder is composed of silver and copper, and is widely used for jewelry (see Patent Document 2).
- 18 gold is excellent in processability and has a color tone suitable for jewelry, and its unique color tone is called 18 gold.
- a silver / copper ratio of 15:10 is called yellow gold, the most common gold color, and a silver / copper ratio of 10:15 is called pink gold, which is a little red It has a golden taste.
- Patent Document 1 Japanese Patent Laid-Open No. 63-169345
- Patent Document 2 Japanese Patent Laid-Open No. 2002-105558 (paragraph [0002])
- force 18 gold has a problem that it is expensive because the gold content is 75%.
- An object of the present invention is to provide a gold alloy suitable for jewelery that has a low gold content, is inexpensive, has the same color tone as 18 gold, and has good workability.
- the gold content is 37.5 mass%.
- the gold alloy of the present invention comprises 37.5% by mass or more and less than 50% by mass of gold and 6% by mass or less of silver. Top 14 mass% or less, zinc 6 mass% or more and 10 mass% or less, indium 0.02 mass% or more and 3 mass% or less, germanium 0.02 mass% or more and 3 mass% or less, and the balance is copper. Gold alloy.
- Gold alloy can change the color tone according to preference by changing the ratio of silver, zinc and copper, which are compounding elements to gold. For example, when the copper ratio is increased, the color becomes reddish gold, and when the ratio of silver and zinc is increased, the color can be reddish and pale gold.
- Silver is added to adjust the color tone and obtain alloy strength, but if it is less than 6% by mass, it will become too red, and if it exceeds 14% by mass, it will become whitish and will not have the color of 18 gold.
- Zinc is added to adjust the color tone and improve processability. However, if it is less than 6% by mass, it will become too red, and if it exceeds 10% by mass, it will become whitish and will not be able to obtain 18K gold color. However, the melting point is too low and brazing processability is deteriorated.
- Germanium an additive element, prevents the melt fluidity from decreasing due to occlusion of silver, zinc, and copper gases (especially oxygen), and helps to reduce nests in the forged body, making crystals finer and improving hardness. Is also effective.
- the reason why the addition amount is set to 0.02% by mass or more and 3% by mass or less is that if the amount is less than 0.02% by mass, the above effect cannot be obtained, and if it exceeds 3% by mass, it becomes too hard and the workability deteriorates. is there.
- indium reduces gas occlusion and is effective in adjusting the hardness just by promoting the effect of germanium.
- Indium and germanium also have the effect of changing the color tone.
- the amount of addition is set to 0.02% by mass or more and 3% by mass or less if the amount is less than 0.02% by mass, the above effect cannot be obtained, and if it exceeds 3% by mass, the melting point decreases and the workability deteriorates. Because.
- the composition is gold 37.5% to less than 50%, silver 6% to 14%, zinc 6% to 10%, indium 0.02% to 3%, germane Fabricate a gold alloy with 0.02% by mass to 3% by mass and the balance being copper.
- Table 1 shows the compositions of Examples 1 to 9 and Comparative Examples 1 to 3 of the present invention, their hardness, workability, and color tone.
- Example 19 In Examples 19 and Comparative Examples:! To 3, an alloy having the composition shown in Table 1 was heated at high frequency in an argon atmosphere, and a sample was manufactured by a continuous casting method. Comparative Example 23 is a common 18K gold. [0012] Hardness Hv was measured using a Vickers hardness tester.
- the workability was judged comprehensively based on the occurrence of cracks due to bending cages by cross-sectional observation and the presence or absence of discoloration after brazing.
- Examples 1 to 3 are examples in which the color tone was adjusted by changing the ratio of silver and copper when gold was 41.7% by mass, Example 1 was yellow, Example 2 was pink, and Example 3 was reddish As a result, the beautiful tone similar to 18 gold was obtained.
- the hardness is slightly lower than those of Comparative Examples 2 and 3 where the hardness is 18 gold.
- Example 4 the strength was confirmed by changing the ratio of germanium and indium.
- Example 4 a beautiful color tone of pink gold was obtained as in Example 2.
- germanium was 3% by mass, the hardness was high and the workability was slightly reduced.
- Example 5 as in Example 2, the force indium with which a beautiful color tone of pink gold was obtained was 3% by mass, so the hardness was low and the workability was slightly reduced.
- Examples 6 to 7 are examples in which the color tone was adjusted by changing the ratio of silver and copper when gold was 37.5% by mass, and the redness was slightly stronger than in Examples 1 to 3.
- Examples 8 to 9 are examples in which the color tone was adjusted by changing the ratio of silver and copper when gold was 49.9% by mass, the color tone was the same as 18K gold, and the workability was good.
- Comparative Example 1 is an example in which the proportions of gold, silver, copper, and zinc are similar to Example 2, but germanium and indium are not added. Since germanium and indium are not added, gas occlusion cannot be reduced, and there are many nests, resulting in poor workability.
- Examples 1 to 9 all have the same color tone as 18K gold, and are gold alloys with excellent workability.
- the gold alloy of the present invention has a low gold content and is inexpensive, and although it is 10 gold, it has the same color tone as 18 gold, and is suitable for jewelery that also has good workability.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Adornments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004229611A JP2006045630A (ja) | 2004-08-05 | 2004-08-05 | 金合金 |
JP2004-229611 | 2004-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006013672A1 true WO2006013672A1 (ja) | 2006-02-09 |
Family
ID=35786971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009984 WO2006013672A1 (ja) | 2004-08-05 | 2005-05-31 | 金合金 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2006045630A (ja) |
WO (1) | WO2006013672A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130129562A1 (en) * | 2011-11-23 | 2013-05-23 | Hoover & Strong, Inc. | Pink colored metal alloy having low gold content |
WO2015193659A3 (en) * | 2014-06-16 | 2016-02-25 | Allied Gold Limited | Alloy compositions |
WO2016084038A3 (en) * | 2014-11-28 | 2016-08-04 | Peretti Diego | Master alloy used for making a white gold alloy |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008297564A (ja) * | 2007-05-29 | 2008-12-11 | Leda Co Ltd | 金合金 |
KR102014611B1 (ko) * | 2017-12-28 | 2019-08-26 | 세종대학교산학협력단 | 로즈골드 색상을 나타내는 구리합금 장식재 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60149741A (ja) * | 1984-01-17 | 1985-08-07 | G C Dental Ind Corp | 歯科用金合金 |
JPH04230611A (ja) * | 1990-09-10 | 1992-08-19 | Elephant Edelmetaal Bv | 歯の補綴物の製造方法および歯科用陶材 |
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2004
- 2004-08-05 JP JP2004229611A patent/JP2006045630A/ja active Pending
-
2005
- 2005-05-31 WO PCT/JP2005/009984 patent/WO2006013672A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60149741A (ja) * | 1984-01-17 | 1985-08-07 | G C Dental Ind Corp | 歯科用金合金 |
JPH04230611A (ja) * | 1990-09-10 | 1992-08-19 | Elephant Edelmetaal Bv | 歯の補綴物の製造方法および歯科用陶材 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130129562A1 (en) * | 2011-11-23 | 2013-05-23 | Hoover & Strong, Inc. | Pink colored metal alloy having low gold content |
WO2015193659A3 (en) * | 2014-06-16 | 2016-02-25 | Allied Gold Limited | Alloy compositions |
WO2016084038A3 (en) * | 2014-11-28 | 2016-08-04 | Peretti Diego | Master alloy used for making a white gold alloy |
Also Published As
Publication number | Publication date |
---|---|
JP2006045630A (ja) | 2006-02-16 |
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