JPH058267B2 - - Google Patents
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- Publication number
- JPH058267B2 JPH058267B2 JP23608989A JP23608989A JPH058267B2 JP H058267 B2 JPH058267 B2 JP H058267B2 JP 23608989 A JP23608989 A JP 23608989A JP 23608989 A JP23608989 A JP 23608989A JP H058267 B2 JPH058267 B2 JP H058267B2
- Authority
- JP
- Japan
- Prior art keywords
- platinum
- alloy
- weight
- total amount
- atmosphere
- 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
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 142
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 66
- 239000010410 layer Substances 0.000 claims description 56
- 238000002844 melting Methods 0.000 claims description 43
- 230000008018 melting Effects 0.000 claims description 43
- 229910052697 platinum Inorganic materials 0.000 claims description 42
- 239000010949 copper Substances 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 39
- 229910045601 alloy Inorganic materials 0.000 claims description 34
- 239000000956 alloy Substances 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000010936 titanium Substances 0.000 claims description 31
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 28
- 238000004040 coloring Methods 0.000 claims description 22
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 22
- 239000002344 surface layer Substances 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010931 gold Substances 0.000 claims description 15
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052763 palladium Inorganic materials 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 9
- 229910052741 iridium Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052762 osmium Inorganic materials 0.000 claims description 8
- 229910052703 rhodium Inorganic materials 0.000 claims description 8
- 229910052707 ruthenium Inorganic materials 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims 3
- 238000007254 oxidation reaction Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- GMMAPXRGRVJYJY-UHFFFAOYSA-J tetrasodium 4-acetamido-5-hydroxy-6-[[7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].OC1=C2C(NC(=O)C)=CC=C(S([O-])(=O)=O)C2=CC(S([O-])(=O)=O)=C1N=NC(C1=CC(=CC=C11)S([O-])(=O)=O)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 GMMAPXRGRVJYJY-UHFFFAOYSA-J 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 48
- 238000005266 casting Methods 0.000 description 32
- 239000010944 silver (metal) Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000010948 rhodium Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000010970 precious metal Substances 0.000 description 4
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000009750 centrifugal casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910020598 Co Fe Inorganic materials 0.000 description 1
- 229910002519 Co-Fe Inorganic materials 0.000 description 1
- 229910018879 Pt—Pd Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 241000665112 Zonitoides nitidus Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、貴金属装飾品製造に関連する光輝あ
る黒色に着色する白金合金とその着色法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a platinum alloy that is colored bright black and a method for coloring the platinum alloy, which is related to the manufacture of precious metal ornaments.
〈従来の技術〉
貴金属装飾品分野においては、白金製品のほと
んどはパラジウム（Pd）を５〜15％含む白金合
金が流通している。この白金合金は、機械的、物
理的、化学的性質が最も安定して加工性がよいた
めである。本来、白金合金は銀白色の色調が特徴
であるが、近年になつて消費者の白金合金による
貴金属装飾品のニーズが多様化し、色の変化を加
えてデザインを生かす工夫がされるようになつて
きた。<Prior Art> In the field of precious metal ornaments, most platinum products are platinum alloys containing 5 to 15% palladium (Pd). This is because this platinum alloy has the most stable mechanical, physical, and chemical properties and has good workability. Originally, platinum alloys are characterized by a silver-white color, but in recent years, consumers' needs for precious metal ornaments made of platinum alloys have diversified, and people have begun to think of adding color changes to make the most of their designs. It's here.
しかし、現在、白金合金の製品に用いられてい
る色調は、Pt−Pd合金の白色のみである。 However, the only color tone currently used for platinum alloy products is the white color of Pt-Pd alloy.
〈発明が解決しようとする課題〉
上記のように白色のみでは、形状の変化による
デザインしか望めず、色調の変化を持たせた白金
合金の装飾品を作ることができない。そこで、白
色以外の色調をもつ白金合金の開発が要望されて
いた。<Problems to be Solved by the Invention> As described above, with only white color, only a design based on changes in shape can be desired, and it is not possible to create platinum alloy ornaments with changes in color tone. Therefore, there has been a demand for the development of platinum alloys with colors other than white.
〈課題を解決するための手段〉
本発明は上記に鑑み提案されたもので、
(A) 白金（Pt）と、
(B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、
からなり、白金の含有量が80重量％以上である合
金、
前記(A)と、(B)と、
(C) 全量に対して0.5〜５重量％の亜鉛（Zn）と、
からなり、白金の含有量が80重量％以上である合
金、
（A′） 白金（Pt）に、パラジウム（Pd）、ロジ
ウム（Rh）、イリジウム（Ir）、ルテニウム
（Ru）、オスミウム（Os）、金（Au）、銀
（Ag）、ニツケル（Ni）のうち１種以上を15重
量％以下含有させた白金合金と、
前記(B)と
からなり、白金の含有量が80重量％以上である合
金、
前記（A′）と、(B)と、(C)と
からなり、白金の含有量が80重量％以上である合
金を、
この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷して合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させてなることを特徴
とする光輝ある黒色に着色した白金合金とその着
色法に関するものである。<Means for Solving the Problems> The present invention was proposed in view of the above, and consists of (A) platinum (Pt), and (B) 3 to 20% by weight of copper (Cu) and iron, respectively, based on the total amount. (Fe), cobalt (Co), or one or more of titanium (Ti) in an amount of 0.5 to 10% by weight based on the total amount, and the platinum content is 80% by weight or more; ), (B), (C) 0.5 to 5% by weight of zinc (Zn) based on the total amount, and the platinum content is 80% by weight or more, (A') Platinum (Pt ) and one or more of palladium (Pd), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), gold (Au), silver (Ag), and nickel (Ni) by weight of 15%. % or less of platinum, and the above (B), and the platinum content is 80% by weight or more; An alloy consisting of the above (A'), (B), and (C), and the platinum content is 80% by weight or more; An alloy containing 80% by weight or more of This invention relates to a platinum alloy colored bright black, which is characterized by forming a black oxide layer on the whole or part of the surface layer of a processed alloy product by cooling, and a method for coloring the platinum alloy.
上記各合金における(B)の銅（Cu）、鉄（Fe）、
コバルト（Co）、及びチタン（Ti）は、黒色の選
択酸化被膜を形成させるためのものであり、白金
の含有量が80重量％より少なくなると白金品位が
低くなるので白金（合金）製品としての価値が少
ない。そして、銅（Cu）、鉄（Fe）、コバルト
（Co）が３重量％より少ないと灰色もしくは灰黒
色となつて装飾品価値の高い黒色に発色しない。
また20重量％を越えると白金合金が硬くなり過ぎ
鋳造後の後加工が困難となる。尚、チタン（Ti）
は、上記各元素に比べて低含有量で黒色に発色す
るので１〜10重量％で良く、10重量％を越えると
非常に硬くなり、脆くなる。 Copper (Cu), iron (Fe) of (B) in each of the above alloys,
Cobalt (Co) and titanium (Ti) are used to form a black selective oxide film, and if the platinum content is less than 80% by weight, the platinum quality will be low, so they are not used as platinum (alloy) products. It has little value. If the content of copper (Cu), iron (Fe), or cobalt (Co) is less than 3% by weight, the color becomes gray or gray-black, and the black color, which is valuable as an ornament, does not develop.
Moreover, if it exceeds 20% by weight, the platinum alloy becomes too hard and post-processing after casting becomes difficult. Furthermore, titanium (Ti)
Since it develops a black color at a lower content than the above-mentioned elements, it may be 1 to 10% by weight; if it exceeds 10% by weight, it becomes extremely hard and brittle.
また亜鉛（Zn）は、白金合金溶解時の脱酸剤
であり、白金合金の黒色化処理時における選択酸
化被膜のガス（主として酸素）による局部的なふ
くれの発生を防止するために添加するものであ
り、0.5重量％より少ないと上記効果が充分でな
いし、５重量％を越えてもそれ以上の効果がな
い。 Zinc (Zn) is a deoxidizing agent when dissolving platinum alloys, and is added to prevent local blistering caused by gas (mainly oxygen) in the selective oxide film during blackening treatment of platinum alloys. If it is less than 0.5% by weight, the above effect is not sufficient, and if it exceeds 5% by weight, there is no further effect.
さらに（A′）の白金（Pt）以外の白金族元素
（Pd、Rh、Ir、Ru、Os）、金（Au）、銀（Ag）、
ニツケル（Ni）は、白金品位及び機械的特性を
調整するための添加元素である。そして、これら
元素の添加が15重量％を越えると白金合金の脆化
をもたらすこととなる。 Furthermore, (A') platinum group elements other than platinum (Pt) (Pd, Rh, Ir, Ru, Os), gold (Au), silver (Ag),
Nickel (Ni) is an additive element for adjusting platinum grade and mechanical properties. If the addition of these elements exceeds 15% by weight, the platinum alloy will become brittle.
上記した各種の元素から構成される白金合金
は、上記した各々の組成物を真空または、不活性
ガス雰囲気中において水冷銅ルツボを備えたアー
ク溶解炉或いは高周波溶解炉等により溶製するこ
とにより得られる。 Platinum alloys composed of the various elements described above can be obtained by melting each of the above compositions in vacuum or in an inert gas atmosphere in an arc melting furnace or high frequency melting furnace equipped with a water-cooled copper crucible. It will be done.
また、通常、一回の溶解量は50〜100gほどで
ある。 Further, the amount of dissolution at one time is usually about 50 to 100 g.
上記のように溶製した各合金のインゴツトを真
空もしくは不活性ガス、例えばアルゴンガス雰囲
気中において溶解し、マグネシア、ジルコン、ア
ルミナ、ムライト、シリカ等で作られた鋳型へ鋳
造する。この場合、鋳造時に不活性ガスによる加
圧もしくは遠心力を利用して鋳型内の空洞（キヤ
ビテイ）への充填性を良好にすることが望まし
い。 The ingots of each alloy produced as described above are melted in vacuum or in an inert gas atmosphere, such as argon gas, and cast into a mold made of magnesia, zircon, alumina, mullite, silica, or the like. In this case, it is desirable to use pressurization with an inert gas or centrifugal force during casting to improve filling of the cavity in the mold.
上記のように鋳造して得られた白金合金の製品
には、ヤスリがけ、キサゲ、砥石研磨、バフ研磨
を施した後、大気中もしくは大気の酸素分圧より
高いかまたは低い酸化雰囲気中で、通常は850〜
950℃で２〜３分ほど加熱した後、空冷、油冷も
しくは水冷する。 The platinum alloy product obtained by casting as described above is subjected to sanding, scraping, grindstone polishing, and buffing, and then is heated in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere. Usually 850~
After heating at 950℃ for 2 to 3 minutes, cool in air, oil, or water.
上記した白金合金の加熱工程は、大気中におい
て行うものでもよく、また、加熱温度は各合金の
融点以下の温度ならば任意に、加熱時間について
も任意に変えることができる。 The heating step for the platinum alloy described above may be performed in the atmosphere, and the heating temperature can be arbitrarily changed as long as it is below the melting point of each alloy, and the heating time can also be changed arbitrarily.
尚、上記した黒色化処理が終了した時点で、表
面に形成された黒色の光沢が不十分であれば、再
度、軽くバフ研磨を行つた後、都市ガス、プロパ
ンガス等によるガスバーナーの炎を製品の表面に
短時間あてて、バフ研磨によりつや出しすると十
分な光沢を発生することができる。 If the black gloss formed on the surface is insufficient after the above-mentioned blackening process is completed, lightly buff it again and then turn off the flame of a gas burner using city gas, propane gas, etc. Sufficient gloss can be generated by applying it to the surface of the product for a short time and polishing it by buffing.
ところで、本発明の加熱による黒色の発色処理
は、加工品の大きさにより異なるが、かなり広い
範囲にとることが可能あり、加熱温度は大気雰囲
気下では800〜1000℃くらいで、加熱時間を長く
するほど黒色化層が厚くなるので、より黒色化度
は増すが、指輪、ブローチ等の小物では15〜20
分、少し大物でも30〜40分で十分のようである。 By the way, the black coloring treatment by heating of the present invention varies depending on the size of the processed product, but can be applied over a fairly wide range, and the heating temperature is about 800 to 1000°C in the air, and the heating time is long. The thicker the blackening layer becomes, the more the degree of blackening increases, but for small items such as rings and brooches,
30 to 40 minutes seems to be enough for slightly larger fish.
〈実施例〉 以下に実施例を示す。<Example> Examples are shown below.
(A) 白金にCu、Fe、Co、Tiのうち１種を添加し
た合金系の場合。(A) In the case of an alloy system in which one of Cu, Fe, Co, and Ti is added to platinum.
実施例 １
Pt合金の配合
純Pt 90g
電解Fe 10g
上記配合のものをアルゴンガス雰囲気中におい
て、アーク溶解により溶製した。本合金を真空下
でロストワツクス法により作製した鋳型を用い、
遠心鋳造を行つて得られた鋳造品（指輪）にヤス
リがけ、研磨をして表面を仕上げた後、大気中で
900℃で15分間均熱して発色処理した後、水冷し
た。その後、製品に再度バフ研磨を施したとこ
ろ、美麗で、光輝ある黒色製品が得られた。発色
処理により形成された黒色化層の厚さは、３〜
4μmほどで、黒色化層を形成する組成物はPtを含
むFe3O4の酸化物であつた。Example 1 Pt alloy composition Pure Pt 90g Electrolytic Fe 10g The above composition was melted by arc melting in an argon gas atmosphere. Using a mold made of this alloy by the lost wax method under vacuum,
After finishing the surface by filing and polishing the cast product (ring) obtained by centrifugal casting, it is exposed to air.
After soaking at 900°C for 15 minutes for color development, the mixture was cooled with water. Thereafter, when the product was buffed again, a beautiful, shiny black product was obtained. The thickness of the blackening layer formed by the coloring treatment is 3 to 3.
At about 4 μm, the composition forming the blackened layer was an oxide of Fe 3 O 4 containing Pt.
実施例 ２
Pt合金の配合
純Pt 90g
純Ti 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で850℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は２〜3μmほどで、黒色化層の組
成物はPtを含むTiO2の低次醸化物であつた。Example 2 Pt alloy composition Pure Pt 90g Pure Ti 10g The cast product (ring) obtained by melting and casting in the same manner as in Example 1 was soaked in the atmosphere at 850°C for 20 minutes, and then The entire surface layer of the product was turned black by air cooling. The black layer had a thickness of about 2 to 3 μm, and the composition of the black layer was a low-order compound of TiO 2 containing Pt.
実施例 ３
Pt合金の配合
純Pt 90g
電解Co 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で950℃で15分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPtを含むCoOであつた。Example 3 Blend of Pt alloy Pure Pt 90g Electrolytic Co 10g The cast product (ring) obtained by melting and casting in the same manner as in Example 1 was soaked at 950°C for 15 minutes in the atmosphere, and then The entire surface layer of the product was turned black by air cooling. The black layer had a thickness of about 3 to 4 μm, and the composition of the black layer was CoO containing Pt.
実施例 ４
Pt合金の配合
純Pt 90g
無酸素Cu 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で800℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPtを含むCuOであつた。Example 4 Pt alloy composition Pure Pt 90g Oxygen-free Cu 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked at 800°C for 20 minutes in the atmosphere. , the entire surface layer of the product was blackened by air cooling. The black layer had a thickness of about 3 to 4 μm, and the composition of the black layer was CuO containing Pt.
(B) 白金にPd、Rh、Ir、Ru、Os、Au、Ag、Ni
のうち１種を添加し、さらにCu、Fe、Co、Ti
のうち１種を添加した合金系の場合。(B) Platinum with Pd, Rh, Ir, Ru, Os, Au, Ag, Ni
One of these is added, and further Cu, Fe, Co, Ti
In the case of an alloy system containing one of these.
実施例 ５
Pt合金の配合
純Pt 85g
純Pd 5g
電解Fe 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で800℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物の多くはPt、Pdを含むFe3O4であつた。Example 5 Pt alloy composition Pure Pt 85g Pure Pd 5g Electrolytic Fe 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 800℃ for 20 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 3 to 4 μm, and most of the composition of the black layer was Fe 3 O 4 containing Pt and Pd.
実施例 ６
Pt合金の配合
純Pt 85g
純Pd 5g
電解Co 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で850℃で30分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は２〜3μmほどで、黒色層の組成
物の多くはPt、Pdを含むCoOであつた。Example 6 Pt alloy composition Pure Pt 85g Pure Pd 5g Electrolytic Co 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 850°C for 30 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 2 to 3 μm, and most of the composition of the black layer was CoO containing Pt and Pd.
実施例 ７
Pt合金の配合
純Pt 85g
純Pd 10g
純Ti 5g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で850℃で30分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は２〜3μmほどで、黒色層の組成
物はPt、Pdを含むTiO2の低次酸化物であつた。Example 7 Pt alloy composition Pure Pt 85g Pure Pd 10g Pure Ti 5g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 850℃ for 30 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 2 to 3 μm, and the composition of the black layer was a low-order oxide of TiO 2 containing Pt and Pd.
実施例 ８
Pt合金の配合
純Pt 85g
電解Ni 5g
無酸素Cu 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で800℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPt、NiOを含むCuOであつた。Example 8 Pt alloy composition Pure Pt 85g Electrolytic Ni 5g Oxygen-free Cu 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was equalized in the air at 800℃ for 20 minutes. After heating, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 3 to 4 μm, and the composition of the black layer was CuO containing Pt and NiO.
実施例 ９
Pt合金の配合
純Pt 85g
純Au 5g
電解Fe 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で850℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物の多くはPt、Auを含むFe3O4であつた。Example 9 Pt alloy composition Pure Pt 85g Pure Au 5g Electrolytic Fe 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 850°C for 20 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 3 to 4 μm, and most of the composition of the black layer was Fe 3 O 4 containing Pt and Au.
(C) 白金にCu、Fe、Co、Ti、Znのうち２種以上
を添加した合金系の場合。(C) In the case of an alloy system in which two or more of Cu, Fe, Co, Ti, and Zn are added to platinum.
実施例 10
Pt合金の配合
純Pt 85g
電解Fe 5g
電解Co 10g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で900℃で15分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPtを含むFe3O4とCoOの複合酸化物であつ
た。Example 10 Pt alloy composition Pure Pt 85g Electrolytic Fe 5g Electrolytic Co 10g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 900℃ for 15 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 3 to 4 μm, and the composition of the black layer was a composite oxide of Fe 3 O 4 containing Pt and CoO.
実施例 11
Pt合金の配合
純Pt 85g
電解Co 10g
純Ti 5g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で900℃で15分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は２〜3μmほどで、黒色層の組成
物はPtを含むCoOとTiO2の低次酸化物との複合
酸化物であつた。Example 11 Pt alloy composition Pure Pt 85g Electrolytic Co 10g Pure Ti 5g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 900℃ for 15 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 2 to 3 μm, and the composition of the black layer was a composite oxide of CoO containing Pt and a lower oxide of TiO 2 .
実施例 12
Pt合金の配合
純Pt 85g
電解Co 10g
無酸素Cu 5g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で800℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPtを含むCoOとCuOの複合酸化物であつた。Example 12 Pt alloy composition Pure Pt 85g Electrolytic Co 10g Oxygen-free Cu 5g The cast product (ring) obtained by melting and casting in the same manner as in Example 1 was equalized in the air at 800℃ for 20 minutes. After heating, the product was air cooled to blacken the entire surface layer of the product. The black layer had a thickness of about 3 to 4 μm, and the composition of the black layer was a composite oxide of CoO and CuO containing Pt.
実施例 13
Pt合金の配合
純Pt 85g
電解Fe 14g
純Zn 1g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で800℃で20分間均
熱した後、空冷しして、製品の表層部全体を黒色
化させた。黒色層は３〜4μmほどで、黒色層の組
成物はPtを含むFe3O4に極く僅少量のZnOが含ま
れていた。Example 13 Pt alloy composition Pure Pt 85g Electrolytic Fe 14g Pure Zn 1g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was soaked in the air at 800℃ for 20 minutes. After that, the product was air cooled to blacken the entire surface layer of the product. The thickness of the black layer was about 3 to 4 μm, and the composition of the black layer was Fe 3 O 4 containing Pt and a very small amount of ZnO.
実施例 14
Pt合金の配合
純Pt 85g
電解Fe 10g
無酸素Cu 5g
実施例１と同一の方法で溶製し、鋳造して得ら
れた鋳造品（指輪）を大気中で850℃で20分間均
熱した後、空冷して、製品の表層部全体を黒色化
させた。黒色層は３〜4μmほどで、黒色層の組成
物はPtを含むFe3O4とCuOの複合酸化物であつ
た。Example 14 Pt alloy composition Pure Pt 85g Electrolytic Fe 10g Oxygen-free Cu 5g The cast product (ring) obtained by melting and casting in the same manner as Example 1 was equalized in the air at 850℃ for 20 minutes. After heating, the product was air cooled to blacken the entire surface layer of the product. The thickness of the black layer was about 3 to 4 μm, and the composition of the black layer was a composite oxide of Fe 3 O 4 containing Pt and CuO.
実施例 15
Pt合金の配合
純Pt 85g
電解Co 12g
電解Fe 2g
純Ti 1g
実施例１と同様の溶製方法によりPt−Co−Fe
−Ti合金を得た。その後、この合金を用いて遠
心鋳造を行つて得られた鋳造品（指輪）に大気中
で900℃で15分の加熱処理を行なつて黒色に発色
させ、水冷した。黒色化層の厚さは３〜4μmほど
で、美麗であつた。Example 15 Pt alloy composition Pure Pt 85g Electrolytic Co 12g Electrolytic Fe 2g Pure Ti 1g Pt-Co-Fe was made by the same melting method as Example 1.
-Ti alloy was obtained. Thereafter, a cast product (ring) obtained by performing centrifugal casting using this alloy was heat-treated at 900°C for 15 minutes in the air to develop a black color, and then cooled with water. The thickness of the blackened layer was about 3 to 4 μm, and it was beautiful.
(D) 白金もしくは白金にPd、Rh、Ir、Ru、Os、
Au、Ag、Niのうち１種もしくは２種以上を添
加した白金合金に、さらにCu、Fe、Co、Ti、
Znのうち２種以上を添加した合金系の場合。(D) Platinum or platinum with Pd, Rh, Ir, Ru, Os,
In addition to platinum alloy containing one or more of Au, Ag, and Ni, Cu, Fe, Co, Ti,
For alloys containing two or more types of Zn.
実施例 16
Pt合金の配合
純Pt 85g
純Ag 5g
電解Co 6g
電解Fe 3g
純Ti 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた。黒色化層の厚さは３〜4μmほど
で、黒色化層は、Ptを含むAg、Co、Fe、Tiの複
合酸化物であつた。Example 16 Pt alloy composition Pure Pt 85g Pure Ag 5g Electrolytic Co 6g Electrolytic Fe 3g Pure Ti 1g The same coloring treatment as in Example 1 was performed by melting, casting, and heating. The thickness of the blackening layer was about 3 to 4 μm, and the blackening layer was a composite oxide of Ag, Co, Fe, and Ti containing Pt.
実施例 17
Pt合金の配合
純Pt 85g
純Ag 5g
無酸素Cu 3g
電解Co 7g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 17 Pt alloy composition Pure Pt 85g Pure Ag 5g Oxygen-free Cu 3g Electrolytic Co 7g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1. The blackened layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 18
Pt合金の配合
純Pt 85g
純Ag 5g
無酸素Cu 7g
電解Fe 3g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた。黒色化層は３〜4μmであり、美麗
であつた。Example 18 Blend of Pt alloy Pure Pt 85g Pure Ag 5g Oxygen-free Cu 7g Electrolytic Fe 3g The same coloring treatment as in Example 1 was performed by melting, casting, and heating. The blackened layer was 3 to 4 μm thick and beautiful.
実施例 19
Pt合金の配合
純Pt 85g
純Ag 5g
無酸素Cu 9g
純Ti 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 19 Pt alloy composition Pure Pt 85g Pure Ag 5g Oxygen-free Cu 9g Pure Ti 1g The same coloring treatment as in Example 1 was performed by melting, casting, and heating, and the blackened layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 20
Pt合金の配合
純Pt 85g
純Ag 4g
無酸素Cu 3g
電解Co 5g
電解Fe 3g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 20 Pt alloy composition Pure Pt 85g Pure Ag 4g Oxygen-free Cu 3g Electrolytic Co 5g Electrolytic Fe 3g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1, and the blackening layer was 3 to 4 μm thick. Yes, it was beautiful and warm.
実施例 21
Pt合金の配合
純Pt 85g
純Au 2g
純Ag 2g
無酸素Cu 5g
電解Co 6g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 21 Pt alloy composition Pure Pt 85g Pure Au 2g Pure Ag 2g Oxygen-free Cu 5g Electrolytic Co 6g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1, and the blackening layer was 3 to 4 μm thick. Yes, it was beautiful and warm.
実施例 22
Pt合金の配合
純Pt 85g
純Ag 2g
電解Ni 2g
無酸素Cu 6g
電解Fe 5g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 22 Pt alloy composition Pure Pt 85g Pure Ag 2g Electrolytic Ni 2g Oxygen-free Cu 6g Electrolytic Fe 5g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1, and the blackening layer was 3 to 4 μm thick. Yes, it was beautiful and warm.
実施例 23
Pt合金の配合
純Pt 85g
無酸素Cu 5g
電解Co 5g
電解Fe 5g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 23 Pt alloy composition Pure Pt 85g Oxygen-free Cu 5g Electrolytic Co 5g Electrolytic Fe 5g The same coloring treatment as in Example 1 was performed by melting, casting, and heating, and the blackening layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 24
Pt合金の配合
純Pt 85g
無酸素Cu 7g
電解Co 7g
純Ti 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 24 Pt alloy composition Pure Pt 85g Oxygen-free Cu 7g Electrolytic Co 7g Pure Ti 1g The same coloring treatment as in Example 1 was carried out by melting, casting, and heating, and the blackening layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 25
Pt合金の配合
純Pt 85g
純Pd 3g
純Au 2g
無酸素Cu 5g
電解Co 5g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 25 Pt alloy composition Pure Pt 85g Pure Pd 3g Pure Au 2g Oxygen-free Cu 5g Electrolytic Co 5g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1, and the blackening layer was 3 to 4 μm thick. Yes, it was beautiful and warm.
実施例 26
Pt合金の配合
純Pt 85g
純Ag 3g
電解Ni 2g
電解Co 10g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 26 Pt alloy composition Pure Pt 85g Pure Ag 3g Electrolytic Ni 2g Electrolytic Co 10g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1. The blackened layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 27
Pt合金の配合
純Pt 85g
純Pd 3g
純Ag 2g
電解Ni 2g
電解Fe 8g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 27 Pt alloy composition Pure Pt 85g Pure Pd 3g Pure Ag 2g Electrolytic Ni 2g Electrolytic Fe 8g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1, and the blackening layer was 3 to 4 μm. , it was beautiful and warm.
実施例 28
Pt合金の配合
純Pt 85g
純Ag 5g
電解Ni 5g
純Ti 5g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 28 Pt alloy composition Pure Pt 85g Pure Ag 5g Electrolytic Ni 5g Pure Ti 5g Coloring treatment was performed by melting, casting, and heating in the same manner as in Example 1. The blackened layer was 3 to 4 μm thick and beautiful. It was hot.
実施例 29
Pt合金の配合
純Pt 85g
純Ag 2g
電解Ni 2g
電解Co 5g
電解Fe 5g
純Zn 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 29 Blend of Pt alloy Pure Pt 85g Pure Ag 2g Electrolytic Ni 2g Electrolytic Co 5g Electrolytic Fe 5g Pure Zn 1g The blackening layer was colored by melting, casting, and heating in the same manner as in Example 1. It was 4 μm and beautiful.
実施例 30
Pt合金の配合
純Pt 85g
純Au 2g
純Ag 2g
電解Ni 2g
電解Co 8g
純Zn 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 30 Blend of Pt alloy Pure Pt 85g Pure Au 2g Pure Ag 2g Electrolytic Ni 2g Electrolytic Co 8g Pure Zn 1g The blackening layer was colored by melting, casting, and heating in the same manner as in Example 1. It was 4 μm and beautiful.
実施例 31
Pt合金の配合
純Pt 85g
純Pd 2g
純Ag 2g
電解Ni 2g
電解Fe 3g
電解Co 5g
純Zn 1g
実施例１と同様の溶製、鋳造、加熱による発色
処理を行つた、黒色化層は３〜4μmであり、美麗
であつた。Example 31 Pt alloy composition Pure Pt 85g Pure Pd 2g Pure Ag 2g Electrolytic Ni 2g Electrolytic Fe 3g Electrolytic Co 5g Pure Zn 1g Blackened layer subjected to coloring treatment by melting, casting, and heating in the same manner as in Example 1 It was 3 to 4 μm and beautiful.
以上、実施例を記したが、前記した本発明の構
成に示した範囲において添加元素と添加量の調整
をしたPt合金の貴金属製品に対し、加熱処理を
施すことにより黒色化した製品とすることができ
る。 Examples have been described above, but a blackened product can be obtained by heat-treating a Pt alloy noble metal product whose additive elements and amounts have been adjusted within the ranges shown in the constitution of the present invention. I can do it.
〈発明の効果〉
以上説明したように、本発明の白金合金は、従
来、銀白色の単色であつたPt合金に黒色のPt合
金を加えることによつて、貴金属装飾品として白
と黒の対比を生かしたデザインが可能になるとと
もに、装飾品の高付加価値化につながる。<Effects of the Invention> As explained above, the platinum alloy of the present invention can be used as a precious metal ornament by adding black Pt alloy to Pt alloy, which has conventionally been a single color of silvery white. This not only makes it possible to create designs that take advantage of this, but also leads to higher added value for decorative items.
また、本発明の光輝ある黒色に着色するPt合
金の製造法は、特殊な原材料及び処理装置を必要
としないので、実用性は極めて高い。 In addition, the method for producing a bright black Pt alloy according to the present invention does not require special raw materials or processing equipment, and therefore has extremely high practicality.
Claims (1)
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷し、合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させてなることを特徴
とする光輝ある黒色に着色した白金合金。 ２ (A) 白金（Pt）と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷して合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させるようにしたこと
を特徴とする光輝ある黒色に着色した白金合金の
着色法。 ３ (A) 白金（Pt）と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 (C) 全量に対して0.5〜５重量％の亜鉛（Zn）と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷し、合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させてなることを特徴
とする光輝ある黒色に着色した白金合金。 ４ (A) 白金（Pt）と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 (C) 全量に対して0.5〜５重量％の亜鉛（Zn）と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷して白金合金の加工品の表層部の全体も
しくは一部に黒色酸化層を形成させるようにした
ことを特徴とする光輝ある黒色に着色した白金合
金の着色法。 ５ （A′） 白金（Pt）に、白金（Pt）以外の
白金族元素（Pd、Rh、Ir、Ru、Os）、金
（Au）、銀（Ag）、ニツケル（Ni）のうち１種
以上を15重量％以下含有させた白金合金と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷し、合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させてなることを特徴
とする光輝ある黒色に着色した白金合金。 ６ （A′） 白金（Pt）に、白金（Pt）以外の
白金族元素（Pd、Rh、Ir、Ru、Os）、金
（Au）、銀（Ag）、ニツケル（Ni）のうち１種
以上を15重量％以下含有させた白金合金と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 とからなり、白金の含有量が80重量％以上である
合金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷して合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させるようにしたこと
を特徴とする光輝ある黒色に着色した白金合金の
着色法。 ７ （A′） 白金（Pt）に、白金（Pt）以外の
白金族元素（Pd、Rh、Ir、Ru、Os）、金
（Au）、銀（Ag）、ニツケル（Ni）のうち１種
以上を15重量％以下含有させた白金合金と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 (C) 全量に対して0.5〜５重量％の亜鉛（Zn）と、 からなり、白金の含有量が80重量％以上上上であ
る合金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷し、合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させてなることを特徴
とする光輝ある黒色に着色した白金合金。 ８ （A′） 白金（Pt）に、白金（Pt）以外の
白金族元素（Pd、Rh、Ir、Ru、Os）、金
（Au）、銀（Ag）、ニツケル（Ni）のうち１種
以上を15重量％以下含有させた白金合金と、 (B) 全量に対してそれぞれ３〜20重量％の銅
（Cu）、鉄（Fe）、コバルト（Co）、もしくは全
量に対して0.5〜10重量％のチタン（Ti）のう
ち１種以上と、 (C) 全量に対して0.5〜５重量％の亜鉛（Zn）と、 からなり、白金の含有量が80重量％以上である合
金を、 この合金の融点以下の温度において大気中もし
くは大気の酸素分圧より高いかもしくは低い酸化
雰囲気中で加熱処理を施した後、空冷、水冷もし
くは油冷して合金の加工品の表層部の全体もしく
は一部に黒色酸化層を形成させるようにしたこと
を特徴とする光輝ある黒色に着色した白金合金の
着色法。[Scope of Claims] 1 (A) Platinum (Pt); (B) 3 to 20% by weight of copper (Cu), iron (Fe), or cobalt (Co), respectively, based on the total amount; or An alloy consisting of 0.5 to 10% by weight of one or more types of titanium (Ti) and containing 80% by weight or more of platinum is exposed to air or atmospheric oxygen partial pressure at a temperature below the melting point of the alloy. It is characterized by being heat-treated in a higher or lower oxidation atmosphere and then air-cooled, water-cooled, or oil-cooled to form a black oxide layer on the whole or part of the surface layer of the processed alloy product. A platinum alloy colored in bright black. 2 (A) Platinum (Pt) and (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20% by weight based on the total amount, or 0.5 to 10% by weight based on the total amount. An alloy consisting of one or more types of titanium (Ti) and containing 80% by weight or more of platinum is oxidized in the atmosphere or at a temperature higher or lower than the atmospheric oxygen partial pressure at a temperature below the melting point of the alloy. A brilliant black color characterized by heat treatment in an atmosphere and then air-cooling, water-cooling, or oil-cooling to form a black oxide layer on the entire or part of the surface layer of the processed alloy product. Coloring method for platinum alloys. 3 (A) Platinum (Pt) and (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20% by weight based on the total amount, or 0.5 to 10% by weight based on the total amount. An alloy consisting of one or more types of titanium (Ti) and (C) 0.5 to 5% by weight of zinc (Zn) based on the total amount, and the platinum content is 80% by weight or more. After heat treatment in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere at a temperature below the melting point, the alloy is cooled in air, water or oil, and then the entire or part of the surface layer of the processed alloy is heated. A platinum alloy colored bright black, characterized by the formation of a black oxide layer. 4 (A) Platinum (Pt) and (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20% by weight based on the total amount, or 0.5 to 10% by weight based on the total amount. An alloy consisting of one or more types of titanium (Ti) and (C) 0.5 to 5% by weight of zinc (Zn) based on the total amount, and the platinum content is 80% by weight or more. After heat treatment in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere at a temperature below the melting point, the whole or part of the surface layer of a processed platinum alloy product is cooled in air, water, or oil. A method for coloring a platinum alloy to a bright black color, characterized by forming a black oxide layer on the platinum alloy. 5 (A') Platinum (Pt) and one of platinum group elements (Pd, Rh, Ir, Ru, Os) other than platinum (Pt), gold (Au), silver (Ag), and nickel (Ni) (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20 percent by weight based on the total amount, or 0.5 to 10 percent by weight based on the total amount. An alloy consisting of at least one type of titanium (Ti) and containing at least 80% by weight of platinum is heated in the atmosphere or at a temperature higher than the atmospheric oxygen partial pressure at a temperature below the melting point of the alloy. Alternatively, after heat treatment in a low oxidation atmosphere, air cooling, water cooling, or oil cooling is performed to form a black oxide layer on the entire or part of the surface layer of the processed alloy product. colored platinum alloy. 6 (A') Platinum (Pt) and one of platinum group elements (Pd, Rh, Ir, Ru, Os) other than platinum (Pt), gold (Au), silver (Ag), and nickel (Ni) (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20 percent by weight based on the total amount, or 0.5 to 10 percent by weight based on the total amount. An alloy consisting of at least one type of titanium (Ti) and containing at least 80% by weight of platinum is heated in the atmosphere or at a temperature higher than the atmospheric oxygen partial pressure at a temperature below the melting point of the alloy. or in a low oxidation atmosphere, and then air-cooled, water-cooled, or oil-cooled to form a black oxide layer on the whole or part of the surface layer of the processed alloy product. A method of coloring a black platinum alloy. 7 (A') Platinum (Pt) and one of platinum group elements other than platinum (Pt) (Pd, Rh, Ir, Ru, Os), gold (Au), silver (Ag), and nickel (Ni) (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20 percent by weight based on the total amount, or 0.5 to 10 percent by weight based on the total amount. (C) 0.5 to 5% by weight of zinc (Zn) based on the total amount, and the platinum content is 80% or more by weight. is heat-treated in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere at a temperature below the melting point of the alloy, and then air-cooled, water-cooled, or oil-cooled to cool the surface layer of the processed alloy. A platinum alloy colored bright black, characterized by having a black oxide layer formed on the whole or part of it. 8 (A') Platinum (Pt) and one of platinum group elements (Pd, Rh, Ir, Ru, Os) other than platinum (Pt), gold (Au), silver (Ag), and nickel (Ni) (B) Copper (Cu), iron (Fe), cobalt (Co) each in an amount of 3 to 20 percent by weight based on the total amount, or 0.5 to 10 percent by weight based on the total amount. (C) 0.5 to 5% by weight of zinc (Zn) based on the total amount, and the platinum content is 80% by weight or more, After heat treatment in the atmosphere or in an oxidizing atmosphere higher or lower than the oxygen partial pressure of the atmosphere at a temperature below the melting point of this alloy, the entire surface layer of the processed alloy product or A method for coloring a platinum alloy to a bright black color, characterized by forming a black oxide layer in a part of the platinum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23608989A JPH03100159A (en) | 1989-09-12 | 1989-09-12 | Platinum alloy to be brightly blackened and method for blackening the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23608989A JPH03100159A (en) | 1989-09-12 | 1989-09-12 | Platinum alloy to be brightly blackened and method for blackening the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03100159A JPH03100159A (en) | 1991-04-25 |
| JPH058267B2 true JPH058267B2 (en) | 1993-02-01 |
Family
ID=16995560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23608989A Granted JPH03100159A (en) | 1989-09-12 | 1989-09-12 | Platinum alloy to be brightly blackened and method for blackening the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03100159A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205745B1 (en) * | 1998-05-27 | 2001-03-27 | Lucent Technologies Inc. | High speed flip-chip dispensing |
| DE10121598A1 (en) * | 2001-05-03 | 2003-01-23 | Heraeus Gmbh W C | Platinum-iron alloy, especially for jewelry |
| ITPD20030187A1 (en) * | 2003-08-13 | 2005-02-14 | Melick Llc | PROCEDURE FOR REALIZING PLATINUM ALLOYS AND ALLOYS |
| JP5077943B2 (en) * | 2006-11-22 | 2012-11-21 | 独立行政法人物質・材料研究機構 | PtTi high temperature shape memory alloy |
-
1989
- 1989-09-12 JP JP23608989A patent/JPH03100159A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03100159A (en) | 1991-04-25 |
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