JPH021900B2 - - Google Patents
Info
- Publication number
- JPH021900B2 JPH021900B2 JP11948780A JP11948780A JPH021900B2 JP H021900 B2 JPH021900 B2 JP H021900B2 JP 11948780 A JP11948780 A JP 11948780A JP 11948780 A JP11948780 A JP 11948780A JP H021900 B2 JPH021900 B2 JP H021900B2
- Authority
- JP
- Japan
- Prior art keywords
- platinum
- weight
- ornaments
- alloy
- mechanical strength
- 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 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 210000004243 sweat Anatomy 0.000 description 6
- 238000000137 annealing Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910001252 Pd alloy Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical group CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910018879 Pt—Pd Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 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
- 238000005245 sintering Methods 0.000 description 1
- 239000011780 sodium chloride 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改良に関するものであ
る。
従来、上述の如き装飾品の材料としては白金−
パラジウム−銅合金が使用されている。
白金−パラジウム−銅合金は、白金−パラジウ
ム合金と同様加工性に優れ、その上機械的強さも
幾分優れていて、白金−パラジウム合金の改良品
であるが、鋳造時に鋳型と反応する為、細かい模
様が現れず、不詳明になり、しかも酸素濃度を抑
制できない為鋳巣が生じまた、大気焼純後の変色
度も大きく、耐汁性もPt−Pdより悪いという欠
点があつた。
本発明は上記欠点を解消せんが為になされたも
のであり、耐汁性、耐変色性、加工性は勿論のこ
と機械的強さ、鋳造性に優れ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84〜94
重量％、パラジウム５〜12重量％、コバルト0.1
〜3.5重量％及びジルコニウム、チタン、タング
ステンの少なくとも１種総量で0.2重量％以上で
1.5重量％未満より成るものである。
本発明による装飾品用白金合金に於いて、コバ
ルトを添加した理由は、装飾品用材料としての加
工性を損なわないこと、鋳造時に鋳型と反応しな
いこと及び鋳造時に酸素濃度を抑制できることの
条件を満たし、機械的強さ及び鋳造性を向上させ
る為であり、その添加量を0.1〜3.5重量％とした
のは、0.1重量％未満では機械的強さ及び鋳造性
の向上が十分見られず、3.5重量％を超えると加
工性が著しく低下するからである。
またジルコニウム、チタン、タングステンの少
なくとも１種を添加したのは、これら諸元素はい
ずれも白金と金属間化合物を作り、耐汗性を阻害
せず硬化して一層機械的強さを向上させる為であ
り、その添加量が0.2重量％未満では機械的強さ
の改善が少なく、1.5重量％以上になると大気中
で焼鈍する場合変色し、耐汗性も落ちてくるから
である。
また、本発明の装飾品用白金合金に於けるパラ
ジウム含有量は、機械的強さ、価格、耐蝕性、鋳
造性等の点から５〜12重量％が好ましい。
以下本発明による装飾品用白金合金の効果を明
瞭ならしめる為に実施例及び従来例について述べ
る。
下表の左欄に示す成分組成の実施例No.１〜９の
装飾品用白金合金と従来例のNo.10の装飾品用白金
合金の硬さ、鋳型の細かい模様の再現度、及び、
巣の発生度合い、大気焼鈍後の変色度合、及び耐
汗性について、夫々大気中900℃で１時間焼なま
し後測定したところ、下表の右欄に示すような結
果を得た。
The present invention includes rings, necklaces, brooches, tie pins, cufflinks, watch frames, watch bands,
This invention relates to the improvement of platinum alloys used as materials for lighters, writing utensils, eyeglass frames, earrings, etc. Conventionally, platinum has been used as a material for decorative items such as those mentioned above.
A palladium-copper alloy is used. Platinum-palladium-copper alloy has excellent workability similar to platinum-palladium alloy, and also has somewhat superior mechanical strength, and is an improved product of platinum-palladium alloy, but because it reacts with the mold during casting, Fine patterns do not appear and become unclear, and since the oxygen concentration cannot be suppressed, cavities occur.Furthermore, the degree of discoloration after air sintering is large, and the liquid resistance is also worse than Pt-Pd. 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 platinum alloy for ornaments that is excellent in liquid resistance, discoloration resistance, workability, mechanical strength, and castability. It is something to do. The platinum alloy for ornaments according to the present invention has platinum 84 to 94
wt%, palladium 5-12 wt%, cobalt 0.1
~3.5% by weight and a total amount of at least one of zirconium, titanium, and tungsten of 0.2% by weight or more
It consists of less than 1.5% by weight. The reason why cobalt is added to the platinum alloy for ornaments according to the present invention is to satisfy the following conditions: it does not impair workability as a material for ornaments, it does not react with the mold during casting, and it suppresses oxygen concentration during casting. This is to improve mechanical strength and castability, and the reason why the amount added is 0.1 to 3.5% by weight is because if it is less than 0.1% by weight, sufficient improvement in mechanical strength and castability will not be observed. This is because if it exceeds 3.5% by weight, processability will be significantly reduced. In addition, at least one of zirconium, titanium, and tungsten was added because these elements form intermetallic compounds with platinum and harden without inhibiting sweat resistance, further improving mechanical strength. If the amount added is less than 0.2% by weight, there will be little improvement in mechanical strength, and if it is more than 1.5% by weight, the color will change when annealing in the air and the sweat resistance will decrease. Further, the palladium content in the platinum alloy for ornaments of the present invention is preferably 5 to 12% by weight from the viewpoints of mechanical strength, cost, corrosion resistance, castability, etc. Examples and conventional examples will be described below in order to clarify the effects of the platinum alloy for ornaments according to the present invention. The hardness of the platinum alloys for ornaments of Examples No. 1 to 9 and the platinum alloy for ornaments of conventional example No. 10 with the composition shown in the left column of the table below, the reproducibility of the fine pattern of the mold, and
The degree of formation of cavities, the degree of discoloration after atmospheric annealing, and the sweat resistance were each measured after annealing at 900°C in the atmosphere for 1 hour, and the results shown in the right column of the table below were obtained.
【表】
なお人工汗の試験は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。
上記表で明らかなように本発明による装飾品用
白金合金は、従来の装飾品用白金合金に比し焼な
まし後の硬さが優れ、鋳造した際の鋳型の細かい
模様の再現度合や鋳巣の発生度合も極めて優れ耐
変色性や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装飾品用白金合金
は、加工性、機械強さ、鋳造性、耐変色性、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] The artificial sweat test was conducted using NH 4 Cl15.5g/,
NaCl 20g/, acetic acid 2.5g/, urea 5g/,
Judgment was made after immersion for 240 hours at a liquid temperature of 40°C with a liquid composition of lactic acid 15g/PH4.7. As is clear from the table above, the platinum alloy for ornaments according to the present invention has superior hardness after annealing compared to conventional platinum alloys for ornaments, and has excellent reproduction of fine patterns in molds when cast. It can be seen that the degree of formation of nests is extremely high, and the color fastness and sweat resistance are also excellent. As detailed above, the platinum alloy for ornaments of the present invention has extremely excellent workability, mechanical strength, castability, color fastness, and sweat resistance, so it can replace conventional platinum alloys for ornaments. It can be said that this is an epoch-making thing that can be done.
Claims (1)
％、コバルト0.1〜3.5重量％及びジルコニウム、
チタン、タングステンの少なくとも１種総量で
0.2重量％以上で1.5重量％未満より成る装飾品用
白金合金。1 84-94% by weight of platinum, 5-12% by weight of palladium, 0.1-3.5% by weight of cobalt, and zirconium,
Total amount of at least one of titanium and tungsten
A platinum alloy for ornaments consisting of 0.2% by weight or more and less than 1.5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11948780A JPS5743947A (en) | 1980-08-29 | 1980-08-29 | Platinum alloy for ornamental product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11948780A JPS5743947A (en) | 1980-08-29 | 1980-08-29 | Platinum alloy for ornamental product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5743947A JPS5743947A (en) | 1982-03-12 |
| JPH021900B2 true JPH021900B2 (en) | 1990-01-16 |
Family
ID=14762481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11948780A Granted JPS5743947A (en) | 1980-08-29 | 1980-08-29 | Platinum alloy for ornamental product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5743947A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134139A (en) * | 1984-07-25 | 1986-02-18 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPS6134137A (en) * | 1984-07-25 | 1986-02-18 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPS6134134A (en) * | 1984-07-25 | 1986-02-18 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for accessory |
| JPH0791610B2 (en) * | 1985-06-17 | 1995-10-04 | 日本電装株式会社 | Metal brazing material for non-oxide ceramic heater |
| JPH06116664A (en) * | 1992-10-02 | 1994-04-26 | Nippon Kikinzoku Kogyo Kk | Platinum alloy for decoration high in hardness and excellent in workability |
| WO1997040200A1 (en) * | 1996-04-24 | 1997-10-30 | Mintek | Platinum alloy |
| EP3444364B1 (en) * | 2017-08-17 | 2021-07-14 | Richemont International S.A. | Platinium based alloy, use thereof |
-
1980
- 1980-08-29 JP JP11948780A patent/JPS5743947A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5743947A (en) | 1982-03-12 |
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