JPH0122339B2 - - Google Patents
Info
- Publication number
- JPH0122339B2 JPH0122339B2 JP56030245A JP3024581A JPH0122339B2 JP H0122339 B2 JPH0122339 B2 JP H0122339B2 JP 56030245 A JP56030245 A JP 56030245A JP 3024581 A JP3024581 A JP 3024581A JP H0122339 B2 JPH0122339 B2 JP H0122339B2
- Authority
- JP
- Japan
- Prior art keywords
- platinum
- hardness
- alloy
- ornaments
- present
- 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
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 5
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 5
- 210000004243 sweat Anatomy 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000010437 gem Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Landscapes
- Adornments (AREA)
Description
本発明は指輪、ネツクレス、ブローチ、ネクタ
イピン、カフスボタン、時計枠、時計バンド、ラ
イター、筆記用具、眼鏡枠、イヤリング等の材料
として使用する白金合金の製造方法に関するもの
である。
従来、上述の如き装飾品材料としては白金−パ
ラジウム(5〜15w/o)系合金が多用されてい
る。
この合金は、加工性、鋳造性に優れているが、
機械的強さ特に硬さが低い為、研摩中にすり傷、
押傷が付き易く且つ光沢が出にくく、また完成品
として使用している場合も傷が付き易く、また宝
石付指輪の場合、宝石を止めている部分がゆるん
で宝石が脱落する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、機械的強さ、加工性に優れた装飾品
用白金合金の製造方法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、ガリウム
2.5〜8重量%及び残部白金よりなる合金を溶体
化処理後時効処理を施し、当該合金の硬度を高く
することを特徴とするものである。
本発明による装飾品用白金合金の製造方法に於
いて、ガリウムを添加した理由は、Pt−Gaの2
元状態図からも明らかなようにGaはPtに対して
1361℃で最大固溶量6w/oを示し、その固溶度
は温度下降と共に漸次減少し、固溶体領域まで加
熱し急冷する溶体化処理を行つた後、適当な温度
で時効させると著しい時効硬化性を現わす為であ
る。その添加量が2.5w/o未満では硬さの改善
が殆んどなく、8w/oを超えるとPtとGaの金属
間化合物の量が多くなり、鋳造性が悪くなるから
である。
以下、本発明により装飾品用白金合金の製造方
法の効果を明瞭ならしめる為に実施例、比較例及
び従来例について述べる。
第1表に示す部分組成の実施例No.1〜No.2の装
飾品用白金合金と比較例No.3、従来例No.4、No.5
の装飾品用白金合金の溶体化処理後の硬度、時効
後の硬度、耐汗性について測定したところ第2表
のような結果を得た。
The present invention relates to a method for producing a platinum alloy used as a material for rings, necklaces, brooches, tie pins, cufflinks, watch frames, watch bands, lighters, writing utensils, eyeglass frames, earrings, and the like. Conventionally, platinum-palladium (5 to 15 w/o) alloys have been widely used as materials for decorative items such as those mentioned above. This alloy has excellent workability and castability, but
Due to low mechanical strength, especially hardness, scratches and scratches occur during polishing.
It is easy to get scratched and hard to get shiny, and it is also easy to get scratched when used as a finished product, and in the case of rings with jewels, the part that holds the jewels loosens and the jewels can fall off. Ta. The present invention was made in order to eliminate the above-mentioned drawbacks, and it is an object of the present invention to provide a method for producing a platinum alloy for decorative articles that has excellent mechanical strength and workability. The platinum alloy for ornaments according to the present invention has gallium
It is characterized in that an alloy consisting of 2.5 to 8% by weight and the balance platinum is solution-treated and then subjected to an aging treatment to increase the hardness of the alloy. The reason why gallium was added in the method for manufacturing platinum alloy for ornaments according to the present invention is that
As is clear from the original phase diagram, Ga is
The maximum solid solubility amount is 6 w/o at 1361℃, and the solid solubility gradually decreases as the temperature decreases, and after performing solution treatment that heats to the solid solution region and rapidly cools it, it undergoes significant age hardening when aged at an appropriate temperature. It is to express one's sexuality. This is because if the amount added is less than 2.5 w/o, there is almost no improvement in hardness, and if it exceeds 8 w/o, the amount of intermetallic compounds of Pt and Ga increases, resulting in poor castability. EXAMPLES Examples, comparative examples, and conventional examples will be described below in order to clarify the effects of the method for producing platinum alloys for ornaments according to the present invention. Platinum alloys for ornaments of Examples No. 1 to No. 2 with partial compositions shown in Table 1, Comparative Example No. 3, and Conventional Examples No. 4 and No. 5
The hardness after solution treatment, the hardness after aging, and the sweat resistance of platinum alloys for ornaments were measured, and the results shown in Table 2 were obtained.
【表】【table】
【表】
なお人工汗試験はNH4Cl15.5g/、
NaCl20g/、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。
また第1表の実施例No.1について1200℃で溶体
化処理後、600℃、700℃の温度で時効処理を施
し、その硬度と時間の関係を測定したところ、図
に示す如く時効処理によつて顕著な硬度上昇を示
す結果を得た。
上記で明らかなように本発明による装飾品用白
金合金は、単に溶体化処理だけした合金や従来の
装飾品用白金合金に比し時効処理後の硬さが著し
く優れ、耐汗性についても優れていることが判
る。
以上詳記した通り、本発明の製造方法による装
飾品用白金合金は、加工性、機械的強さ、耐汗性
が極めて優れているので、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ものと言
える。[Table] For the artificial sweat test, NH 4 Cl15.5g/,
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. In addition, for Example No. 1 in Table 1, after solution treatment at 1200℃, aging treatment was performed at temperatures of 600℃ and 700℃, and the relationship between hardness and time was measured. As shown in the figure, the aging treatment The results showed a significant increase in hardness. As is clear from the above, the platinum alloy for ornaments according to the present invention has significantly superior hardness after aging treatment and superior sweat resistance compared to alloys that have been simply solution-treated or conventional platinum alloys for ornaments. It can be seen that As detailed above, the platinum alloy for ornaments manufactured by the production method of the present invention has extremely excellent workability, mechanical strength, and sweat resistance, and therefore is suitable as a substitute for conventional platinum alloys for ornaments. It can be said to be a revolutionary thing.
図は、実施例No.1を600℃及び700℃で時効処理
したときの時効時間と硬度の関係を示すグラフで
ある。
The figure is a graph showing the relationship between aging time and hardness when Example No. 1 was aged at 600°C and 700°C.
Claims (1)
る合金を溶体化処理後時効処理を施し、当該合金
の硬度を高くすることを特徴とする装飾品用白金
合金の製造方法。1. A method for producing a platinum alloy for ornaments, which comprises subjecting an alloy consisting of 2.5 to 8% by weight of gallium and the balance platinum to a solution treatment and then aging treatment to increase the hardness of the alloy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56030245A JPS57145950A (en) | 1981-03-03 | 1981-03-03 | Platinum alloy for accessory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56030245A JPS57145950A (en) | 1981-03-03 | 1981-03-03 | Platinum alloy for accessory |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57145950A JPS57145950A (en) | 1982-09-09 |
JPH0122339B2 true JPH0122339B2 (en) | 1989-04-26 |
Family
ID=12298316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56030245A Granted JPS57145950A (en) | 1981-03-03 | 1981-03-03 | Platinum alloy for accessory |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57145950A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2397897A (en) * | 1996-04-24 | 1997-11-12 | Mintek | Platinum alloy |
US5846352A (en) * | 1996-11-22 | 1998-12-08 | Kretchmer; Steven | Heat treatment of a platinum-gallium alloy for jewelry |
JP6302779B2 (en) * | 2014-07-14 | 2018-03-28 | 株式会社グローバルコーポレーション | Method for producing 999 platinum alloy having high hardness and high strength |
EP4074435A3 (en) * | 2021-02-26 | 2022-12-21 | C. Hafner GmbH + Co. KG | Powder made of spherical particles of a noble metal alloy containing platinum or palladium, use of this powder in a powder-based production method for producing a three-dimensional object, and an additive method for producing a three-dimensional object using the aforementioned powder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4894474A (en) * | 1972-02-11 | 1973-12-05 | ||
JPS53124116A (en) * | 1977-02-23 | 1978-10-30 | Johnson Matthey Co Ltd | Jewel ornament alloy |
-
1981
- 1981-03-03 JP JP56030245A patent/JPS57145950A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4894474A (en) * | 1972-02-11 | 1973-12-05 | ||
JPS53124116A (en) * | 1977-02-23 | 1978-10-30 | Johnson Matthey Co Ltd | Jewel ornament alloy |
Also Published As
Publication number | Publication date |
---|---|
JPS57145950A (en) | 1982-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0122339B2 (en) | ||
JPH0135913B2 (en) | ||
JPH0242895B2 (en) | ||
JPH0135911B2 (en) | ||
JPH0135912B2 (en) | ||
JPH0132298B2 (en) | ||
JP2804944B2 (en) | Method for producing pure platinum for decoration having high hardness | |
JPS6361372B2 (en) | ||
JPS61272333A (en) | Ornamental platinum alloy | |
JPH0143825B2 (en) | ||
JPS6361374B2 (en) | ||
JPS6361373B2 (en) | ||
JPH0242896B2 (en) | ||
JPS61272337A (en) | Ornamental platinum alloy | |
JPS6361375B2 (en) | ||
JPS61272335A (en) | Ornamental platinum alloy | |
JPS61272336A (en) | Ornamental platinum alloy | |
JPH021900B2 (en) | ||
JPS61270349A (en) | Ornamental platinum alloy | |
JPS61272334A (en) | Ornamental platinum alloy | |
JPS61133340A (en) | Platinum alloy for ornament | |
JPS61270351A (en) | Ornamental platinum alloy | |
JP3395915B2 (en) | Gold decorative materials hardened by alloying small amounts of components | |
JPS61270350A (en) | Ornamental platinum alloy | |
JPS6191337A (en) | Platinum alloy for ornament |