JPS6356015B2 - - Google Patents
Info
- Publication number
- JPS6356015B2 JPS6356015B2 JP10345079A JP10345079A JPS6356015B2 JP S6356015 B2 JPS6356015 B2 JP S6356015B2 JP 10345079 A JP10345079 A JP 10345079A JP 10345079 A JP10345079 A JP 10345079A JP S6356015 B2 JPS6356015 B2 JP S6356015B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- platinum
- ornaments
- hardness
- alloys
- 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
Links
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052703 rhodium Inorganic materials 0.000 claims description 5
- 239000010948 rhodium Substances 0.000 claims description 5
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910001260 Pt alloy Inorganic materials 0.000 description 16
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000010437 gem Substances 0.000 description 3
- 229910001751 gemstone Inorganic materials 0.000 description 3
- 229910018879 Pt—Pd Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Adornments (AREA)
- Contacts (AREA)
Description
本発明は装飾品用白金合金に関する。
従来、装飾品用白金合金としては、パラジウ
ム，イリジウム，ルテニウム，ロジウム，金，
銀，銅，ニツケル，コバルトの少なくとも１種を
添加した白金合金が知られているが、実用的なも
のとしては、主としてPt―Pd（５〜15重量％）合
金が用いられている。しかしこのPt―Pd（５〜15
重量％）合金は加工性に優れているものの、機械
的強さとりわけ硬さが低い為、研摩中にすり傷，
押傷が付き易く、光沢が出にくいものである。ま
た完成品として使用している場合も傷が付き易
く、宝石付指輪の場合、宝石を止めているかしめ
部分が緩んで宝石が脱落することがある。さらに
Pt―Pd（５〜15重量％）合金は、巣の発生度合も
決して少なくはないものである。またろう付け等
の高温中で結晶粒が粗大化して機械的強さが著し
く劣化するものである。
本発明はかかるPt―Pd（５〜15重量％）合金等
の欠点を解消すべくなされたものであり、機械的
強さ特に硬さを向上させ、また巣の発生度合が低
く、さらに高温中での機械的強さをも向上させた
装飾品用白金合金を提供せんとするものである。
本発明による装飾品用白金合金は、白金80〜95
重量％に、ミツシユ・メタル0.01〜５重量％と、
パラジウム，イリジウム，ルテニウム，ロジウ
ム，金，銀，銅，ニツケル，コバルトの少くとも
１種を合計で１〜15重量％添加して成るものであ
る。
本発明の装飾品用白金合金に於いて、ミツシ
ユ・メタルを添加した理由は、機械的強さとりわ
け硬さを向上させると共に巣の発生度合を低下さ
せる為である。特に耐蝕性，価格の面を考慮して
添加したパラジウム，イリジウム，ルテニウム，
ロジウム，金，銀，銅，ニツケル，コバルトは白
金の硬さを向上させるには不十分であるが、ミツ
シユ・メタルを添加することにより大幅に硬さを
向上できるものであり、同時に白金合金鋳造時の
巣の発生を防止するものである。
さらにメツシユ・メタルを添加することによ
り、ろう付け等の高温中での結晶粒の粗大化を防
止して機械的強さの低下を防止できるものであ
る。
然してミツシユ・メタルの添加量を0.01〜５重
量％と限定した理由は、0.01重量％未満では機械
的強さ即ち硬さ及び巣の発生度合を低下させるこ
とができず、５重量％を超えると加工性が著しく
悪くなるからである。またパラジウム，イリジウ
ム，ルテニウム，ロジウム，金，銀，銅，ニツケ
ル，コバルトの少くとも１種の添加量の合計を１
〜15重量％と限定した理由は１重量％未満では耐
蝕性，価格の点で期待する効果が得られず、15重
量％を超えると鋳造性が著しく悪くなるからであ
る。
次に本発明による装飾品用白金合金の効果を明
瞭ならしめる為にその具体的な実施例と従来例に
ついて説明する。
下記の表の左欄に示す成分組成の実施例１〜25
の装飾品用白金合金と従来例１〜３の装飾品用白
金合金の焼なまし後の硬さを測定し、また前記合
金を溶解して指輪鋳造用鋳型に注湯し、固化後鋳
型の細かい模様の再現度合及び巣の発生度合を調
査したところ、下記の表の右欄に示すような結果
を得た。
The present invention relates to platinum alloys for decorative articles. Conventionally, platinum alloys for ornaments include palladium, iridium, ruthenium, rhodium, gold,
Platinum alloys containing at least one of silver, copper, nickel, and cobalt are known, but for practical purposes, Pt--Pd (5 to 15% by weight) alloys are mainly used. However, this Pt-Pd (5 to 15
Although the alloy (weight%) has excellent workability, its mechanical strength and especially its hardness are low, resulting in scratches and scratches during polishing.
It is easily scratched and does not have a glossy appearance. Furthermore, when used as a finished product, it is easily scratched, and in the case of a ring with a jewel, the caulked part that holds the jewel in place may loosen and the jewel may fall off. moreover
Pt--Pd (5 to 15% by weight) alloys have a fairly high incidence of cavities. In addition, the crystal grains become coarse during high temperatures such as during brazing, and the mechanical strength deteriorates significantly. The present invention has been made to eliminate the drawbacks of such Pt-Pd (5 to 15% by weight) alloys, etc., and improves mechanical strength, especially hardness, has a low degree of formation of cavities, and can be used at high temperatures. The object of the present invention is to provide a platinum alloy for decorative items that also has improved mechanical strength. The platinum alloy for ornaments according to the present invention has platinum of 80 to 95%
% by weight, Mitsushi Metal 0.01-5% by weight,
At least one of palladium, iridium, ruthenium, rhodium, gold, silver, copper, nickel, and cobalt is added in a total amount of 1 to 15% by weight. The reason why Mitsushi Metal is added to the platinum alloy for ornaments of the present invention is to improve mechanical strength, particularly hardness, and to reduce the degree of occurrence of cavities. Palladium, iridium, and ruthenium are added with particular consideration to corrosion resistance and cost.
Rhodium, gold, silver, copper, nickel, and cobalt are not sufficient to improve the hardness of platinum, but adding Mitsushi metal can significantly improve the hardness, and at the same time platinum alloy casting. This prevents the occurrence of time nests. Furthermore, by adding mesh metal, coarsening of crystal grains during high temperatures such as during brazing can be prevented, thereby preventing a decrease in mechanical strength. However, the reason why the amount of Mitsushi Metal added was limited to 0.01 to 5% by weight is that if it is less than 0.01% by weight, the mechanical strength, that is, hardness, and the degree of occurrence of cavities cannot be reduced, and if it exceeds 5% by weight, This is because workability becomes significantly worse. In addition, the total amount of at least one of palladium, iridium, ruthenium, rhodium, gold, silver, copper, nickel, and cobalt is 1
The reason why it is limited to ~15% by weight is that if it is less than 1% by weight, the expected effects in terms of corrosion resistance and cost cannot be obtained, and if it exceeds 15% by weight, the castability will deteriorate significantly. Next, in order to clarify the effects of the platinum alloy for ornaments according to the present invention, specific examples and conventional examples thereof will be described. Examples 1 to 25 of the component compositions shown in the left column of the table below
The hardness of the platinum alloys for ornaments of 1 to 3 and the platinum alloys for ornaments of Conventional Examples 1 to 3 after annealing was measured, and the alloys were melted and poured into a mold for ring casting, and after solidification, the hardness of the platinum alloys for ornaments was measured. When we investigated the degree of reproduction of fine patterns and the degree of occurrence of nests, we obtained the results shown in the right column of the table below.
【表】【table】
【表】
上記の表で明らかなように実施例の装飾品用白
金合金は従来例の装飾品用白金合金に比し、焼な
まし後の硬さが高く、特に巣の発生度合は極めて
低いものである。なお、鋳型の細かい模様の再現
度合は、ミツシユメタルの比重が白金の1/2以下
にもかかわらず、従来品と同程度以上の再現度合
を有していた。
以上詳記した通り本発明の装飾品用白金合金
は、機械的強さとりわけ硬さが高く、特に巣の発
生度合は極めて少なく、従来品と同様、鋳造性に
優れているので、従来の装飾品用白金合金にとつ
て代わることのできる画期的な装飾品用白金合金
と言える。[Table] As is clear from the table above, the platinum alloy for decorative items of the example has higher hardness after annealing than the conventional platinum alloy for decorative items, and in particular, the degree of occurrence of cavities is extremely low. It is something. The degree of reproduction of the fine patterns on the mold was at least as good as that of conventional products, even though the specific gravity of Mitsushi Metal was less than half that of platinum. As detailed above, the platinum alloy for ornaments of the present invention has high mechanical strength, especially hardness, has extremely low occurrence of cavities, and has excellent castability similar to conventional products, so it can be used for conventional decorations. It can be said that this is a revolutionary platinum alloy for ornaments that can replace platinum alloys for ornaments.
Claims (1)
〜５重量％と、パラジウム，イリジウム，ルテニ
ウム，ロジウム，金，銀，銅，ニツケル，コバル
トの少なくとも１種を合計で１〜15重量％添加し
て成る装飾品用白金合金。1 Platinum 80-95% by weight, Mitsushi Metal 0.01
~5% by weight, and a total of 1~15% by weight of at least one of palladium, iridium, ruthenium, rhodium, gold, silver, copper, nickel, and cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10345079A JPS5629641A (en) | 1979-08-14 | 1979-08-14 | Decorative platinum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10345079A JPS5629641A (en) | 1979-08-14 | 1979-08-14 | Decorative platinum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5629641A JPS5629641A (en) | 1981-03-25 |
| JPS6356015B2 true JPS6356015B2 (en) | 1988-11-07 |
Family
ID=14354355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10345079A Granted JPS5629641A (en) | 1979-08-14 | 1979-08-14 | Decorative platinum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5629641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3502286A1 (en) | 2017-12-20 | 2019-06-26 | Omega SA | Platinum alloy |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150039A (en) * | 1983-02-16 | 1984-08-28 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPS608210A (en) * | 1983-06-27 | 1985-01-17 | Nissan Chem Ind Ltd | Stabilized solid agricultural chemical composition |
| JPS6134133A (en) * | 1984-07-25 | 1986-02-18 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPS6134138A (en) * | 1984-07-25 | 1986-02-18 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPS61260003A (en) * | 1985-05-14 | 1986-11-18 | Otsuka Chem Co Ltd | Stable, solid agricultural chemical composition |
| JPH07310132A (en) * | 1994-05-13 | 1995-11-28 | Ishifuku Metal Ind Co Ltd | High purity hard platinum material |
| EP1711641B1 (en) * | 2004-02-04 | 2010-12-15 | Allgemeine Gold- und Silberscheideanstalt AG | Platinum alloy and method of production thereof |
| JP6837631B2 (en) * | 2017-02-23 | 2021-03-03 | 学校法人東京理科大学 | Blue platinum ornaments or yellow platinum ornaments |
| CN112680680A (en) * | 2020-12-07 | 2021-04-20 | 有研亿金新材料有限公司 | Processing method of Pt-25Ag alloy material |
-
1979
- 1979-08-14 JP JP10345079A patent/JPS5629641A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3502286A1 (en) | 2017-12-20 | 2019-06-26 | Omega SA | Platinum alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5629641A (en) | 1981-03-25 |
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