JPH0361742B2 - - Google Patents
Info
- Publication number
- JPH0361742B2 JPH0361742B2 JP59032896A JP3289684A JPH0361742B2 JP H0361742 B2 JPH0361742 B2 JP H0361742B2 JP 59032896 A JP59032896 A JP 59032896A JP 3289684 A JP3289684 A JP 3289684A JP H0361742 B2 JPH0361742 B2 JP H0361742B2
- Authority
- JP
- Japan
- Prior art keywords
- golden
- decorative
- alloy
- precious metals
- copper
- 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.)
- Expired - Lifetime
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Adornments (AREA)
Description
本発明は、装飾用金合金の代用として用いられ
る黄金色系銅合金に関するものである。
近年の省資源化に伴い、装飾用金合金の代用と
して黄金色系合金材料が要求されている。
一般に装飾品に於いては、耐食性が良好である
ことが具備条件の一つとされている。更には、こ
れ等の装飾品は装飾性の面から、複雑な加工が施
される為、その加工が容易であること、さらにそ
の色が黄金色に近いことも併せて要求されてい
る。
ところで、装飾用黄金色系材料として用いられ
ている合金としてはZn30wt％、残部Cuより成る
黄銅合金があるが、この合金は耐食性が悪く、複
雑な形状に加工しづらいという欠点があつた。
本発明は、上記の欠点を解消せんが為になされ
たものであり、銅系合金で耐食性、加工性に優
れ、かつ黄金色を有する装飾用黄金色系銅合金で
提供せんとするものである。
本発明による装飾用黄金色系銅合金はA12.5〜
10wt％、Zn0.1〜2wt％、貴金属0.1〜1.8wt％、
残部Cuより成りZnと貴金属の合計が0.8wt％以上
である合金である。
本発明による装飾用黄金色系銅合金に於いて、
Alを添加した理由は、AlはCuと合金を作つた際
に表面に安定な酸化被膜を作り、耐食性を向上す
ると共に、黄金色の合金が得られる為であり、
2.5wt％未満ではその効果が薄く、10wt％を超え
ると金属間化合物を作り、薄板に加工することが
困難になる為である。
また、Znを添加した理由は、Znの添加により
Cu−Al合金の黄金色さらに彩やかにすると共に
機械的強度を増加させる為であり、0.1wt％未満
ではその効果が薄く、2wt％を超えると耐食性が
低下してくる為である。
また、貴金属を添加した理由は、貴金属の微量
添加によりCu−Al合金の耐食性をさらに向上さ
せる為であり、0.1wt％未満ではその効果が薄く、
1.8wt％を超えてもあまり顕著な変化が見られな
くなる為であり、ここで言う貴金属とは、Au、
Ag、Pt、Pd、Rh、Ru、Ir、Osを含めてのこと
である。なお、亜鉛と貴金属の合計が0.8wt％以
上とすることで、銅、アルミニウム、亜鉛、貴金
属の相互作用により、目的とする課題を解決でき
るものである。
以下本発明による装飾用黄金色系銅合金の効果
を明瞭ならしめる為に実施例及び従来例について
述べる。
第１表に示す成分組成の実施例１〜４の装飾用
黄金色系銅合金と従来例１、２の装飾用黄金色系
銅合金の色、加工性、耐汗性についてテストした
ところ第２表のような結果を得た。
The present invention relates to a golden copper alloy used as a substitute for decorative gold alloys. With the recent efforts to save resources, golden alloy materials are required as a substitute for decorative gold alloys. In general, one of the requirements for decorative items is good corrosion resistance. Furthermore, since these ornaments are subjected to complex processing for decorative purposes, they are also required to be easy to process and to have a color close to golden yellow. Incidentally, an alloy used as a decorative golden material is a brass alloy consisting of 30wt% Zn and the balance Cu, but this alloy has the drawbacks of poor corrosion resistance and difficulty in processing into complex shapes. The present invention has been made in order to eliminate the above-mentioned drawbacks, and aims to provide a decorative golden-colored copper alloy that is a copper-based alloy, has excellent corrosion resistance and workability, and has a golden color. . The decorative golden copper alloy according to the present invention is A12.5~
10wt%, Zn0.1~2wt%, precious metals 0.1~1.8wt%,
It is an alloy with the balance being Cu and the total amount of Zn and precious metals being 0.8wt% or more. In the decorative golden copper alloy according to the present invention,
The reason for adding Al is that when Al forms an alloy with Cu, it forms a stable oxide film on the surface, improving corrosion resistance and producing a golden-colored alloy.
This is because if the content is less than 2.5wt%, the effect will be weak, and if it exceeds 10wt%, intermetallic compounds will be formed, making it difficult to process into a thin plate. In addition, the reason for adding Zn is that the addition of Zn
This is to make the golden color of the Cu-Al alloy more colorful and to increase its mechanical strength.If it is less than 0.1wt%, the effect will be weak, and if it exceeds 2wt%, the corrosion resistance will decrease. In addition, the reason for adding precious metals is to further improve the corrosion resistance of the Cu-Al alloy by adding a small amount of precious metals, and if it is less than 0.1wt%, the effect will be weak.
This is because even if the concentration exceeds 1.8wt%, no noticeable change is observed.The precious metals mentioned here include Au, Au,
This includes Ag, Pt, Pd, Rh, Ru, Ir, and Os. Note that by setting the total amount of zinc and precious metal to 0.8 wt% or more, the desired problem can be solved through the interaction of copper, aluminum, zinc, and precious metal. Examples and conventional examples will be described below in order to clarify the effects of the decorative golden copper alloy according to the present invention. The color, workability, and sweat resistance of the decorative golden-colored copper alloys of Examples 1 to 4 and the conventional examples 1 and 2 with the compositions shown in Table 1 were tested. The results shown in the table were obtained.
【表】【table】
【表】【table】
【表】
なお、人工汗試験はNH4Cl 15.5ｇ／、NaCl
20ｇ／、酢酸2.5ｇ／、尿素５ｇ／、乳酸
15ｇ／、PH4.7の液組成で液温40℃、240時間浸
漬後判定した。
上記で明らかなように本発明による装飾用黄金
色系銅合金は従来の装飾用黄金色系銅合金に比
し、耐汗性、加工性が優れ、かつ黄金色を有して
いることが判る。
以上詳記した通り、本発明の装飾用黄金色系銅
合金は、耐汗性、加工性が優れかつ黄金色を有し
ているので、従来の装飾用黄金色系銅合金にとつ
て代わることのできる画期的なものと言える。[Table] For the artificial sweat test, NH 4 Cl 15.5g/, NaCl
20g/, acetic acid 2.5g/, urea 5g/, lactic acid
Judgment was made after immersion for 240 hours at a liquid temperature of 40°C with a liquid composition of 15g/pH4.7. As is clear from the above, the decorative golden-colored copper alloy according to the present invention has superior sweat resistance and processability, and has a golden color, compared to conventional decorative golden-colored copper alloys. . As detailed above, the decorative golden-colored copper alloy of the present invention has excellent sweat resistance, workability, and has a golden color, so it can be used to replace conventional decorative golden-colored copper alloys. It can be said that it is a groundbreaking thing that can be done.
Claims (1)
貴金属0.1〜1.8wt％、残部銅より成り亜鉛と貴金
属の合計が0.8wt％以上である装飾用黄金色系銅
合金。1 Aluminum 2.5-10wt%, Zinc 0.1-2wt%,
A decorative golden-colored copper alloy consisting of 0.1 to 1.8 wt% of precious metals and the balance copper, with the total amount of zinc and precious metals being 0.8 wt% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289684A JPS60177145A (en) | 1984-02-23 | 1984-02-23 | Golden copper alloy for ornamentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289684A JPS60177145A (en) | 1984-02-23 | 1984-02-23 | Golden copper alloy for ornamentation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60177145A JPS60177145A (en) | 1985-09-11 |
| JPH0361742B2 true JPH0361742B2 (en) | 1991-09-20 |
Family
ID=12371651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3289684A Granted JPS60177145A (en) | 1984-02-23 | 1984-02-23 | Golden copper alloy for ornamentation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60177145A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5760043A (en) * | 1980-09-30 | 1982-04-10 | Furukawa Electric Co Ltd:The | Electrically conductive copper alloy with corrosion and heat resistance |
| JPS57192239A (en) * | 1981-05-22 | 1982-11-26 | Furukawa Electric Co Ltd:The | Copper alloy useful as fin for car radiator |
-
1984
- 1984-02-23 JP JP3289684A patent/JPS60177145A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60177145A (en) | 1985-09-11 |
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