JPH06158102A - Noble metal sintered compact and its production - Google Patents
Noble metal sintered compact and its productionInfo
- Publication number
- JPH06158102A JPH06158102A JP4339623A JP33962392A JPH06158102A JP H06158102 A JPH06158102 A JP H06158102A JP 4339623 A JP4339623 A JP 4339623A JP 33962392 A JP33962392 A JP 33962392A JP H06158102 A JPH06158102 A JP H06158102A
- Authority
- JP
- Japan
- Prior art keywords
- noble metal
- fine powder
- alloy
- powder
- sintered
- 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.)
- Pending
Links
- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000843 powder Substances 0.000 claims abstract description 67
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 25
- 239000010970 precious metal Substances 0.000 claims description 20
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 8
- 229910001020 Au alloy Inorganic materials 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 239000003353 gold alloy Substances 0.000 claims description 7
- 238000004898 kneading Methods 0.000 claims description 4
- 229910000923 precious metal alloy Inorganic materials 0.000 claims description 4
- 241000280258 Dyschoriste linearis Species 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 229910001260 Pt alloy Inorganic materials 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000010930 yellow gold Substances 0.000 description 4
- 229910001097 yellow gold Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000832 white gold Inorganic materials 0.000 description 2
- 239000010938 white gold Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001272 pressureless sintering Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、貴金属粉末等を成形し
焼結してなる指輪等の貴金属焼結体およびその製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noble metal sintered body such as a ring formed by molding and sintering noble metal powder and the like, and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、２種以上の異色の貴金属を用いて
指輪等の装飾品を製造するには、溶解、圧延、プレス、
切削、研磨等のいわゆる機械加工のもの、また、異色の
貴金属を接合するには、ろう付け、鍛接、ロ−ル圧延、
爆着、押し出し、拡散溶接するもの等があった。しか
し、これらの加工方法で製造されたものは、３次元的な
立体感のある細かい形状を造ることができなかった。こ
れらの３次元的な立体感のある形状を造るには、ロスト
ワックス法や粉末成形法もあるが、前者は型製作に手間
がかかって、かなりのコスト高となり、後者は表面にポ
ア（巣）が残る等の欠点があり、かつ、異色貴金属の球
が他の貴金属の中に分散している、いわゆる白玉模様の
ような装飾品をつくることは不可能であった。2. Description of the Related Art Conventionally, for manufacturing decorative articles such as rings using two or more kinds of precious metals of different colors, melting, rolling, pressing,
So-called machining such as cutting and polishing, and for joining precious metals of different colors, brazing, forge welding, roll rolling,
There were things such as explosion, extrusion, and diffusion welding. However, those manufactured by these processing methods could not produce a fine shape having a three-dimensional three-dimensional effect. Lost wax method and powder molding method are also available to make these three-dimensional shapes. However, the former takes a lot of time to make the mold and the cost is considerably high. ) Remains, and it is impossible to make an ornament such as a so-called white ball pattern in which spheres of different precious metals are dispersed in other precious metals.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、前述したよ
うな貴金属装飾品を得るためになされたものであり、す
なわち、３次元的な立体感のある細かい模様が製造可能
で、かつ、異色貴金属の球が他の貴金属の中に分散して
いる模様が得られる貴金属装飾品、および、その製造方
法の提供をその目的とする。The present invention has been made in order to obtain a precious metal ornament as described above, that is, it is possible to produce a fine pattern having a three-dimensional three-dimensional effect, and a different color. It is an object of the present invention to provide a precious metal decorative article in which a pattern in which precious metal balls are dispersed in another precious metal can be obtained, and a method for producing the same.
【０００４】[0004]
【課題を解決するための手段】本発明者等は、貴金属装
飾品を、貴金属又は貴金属合金の粉末と熱可塑性樹脂よ
りなるバインダ−を混練した原料を用いて、射出成形、
バインダ−除去、焼結の各工程を行って得られる貴金属
焼結体であって、前記焼結した微粉体の貴金属又は貴金
属合金内に、前記微粉体の貴金属又は貴金属合金と異色
で平均粒子径を200μｍ〜２ｍｍとした焼結してない粉
粒体が、散在している構成とし、また、その製造方法
を、貴金属又は貴金属合金からなる平均粒子径が50μｍ
以下の微粉体と、前記微粉体と異色で平均粒子径が 200
μｍ〜２ｍｍの貴金属又は貴金属合金の粉粒体とで、前
記微粉体が50体積％以上となる混合物を形成する工程
と、前記混合物に熱可塑性樹脂よりなるバインダ−を添
加して混練する工程と、その混合物を原料として射出成
形する工程と、その射出成形されたものからバインダ−
を除去する工程と、そのバインダ−を除去したものの中
の微粉体を焼結する工程とを含むものにすると、前記課
題が解決できることを見出した。Means for Solving the Problems The present inventors have made an injection molding of a precious metal ornament using a raw material obtained by kneading a powder of a precious metal or a precious metal alloy and a binder made of a thermoplastic resin.
A noble metal sintered body obtained by performing the steps of binder removal and sintering, wherein the average particle diameter of the noble metal or noble metal alloy of the fine powder is different from that of the noble metal or noble metal alloy of the fine powder. The unsintered powder and granules having a diameter of 200 μm to 2 mm are scattered, and the manufacturing method is such that the average particle diameter of the noble metal or noble metal alloy is 50 μm.
The following fine powder and a different color from the above fine powder with an average particle size of 200
a step of forming a mixture in which the fine powder is 50% by volume or more, and a step of adding a binder made of a thermoplastic resin to the mixture and kneading, with a powder of a noble metal or a noble metal alloy having a particle size of μm to 2 mm. , A step of injection-molding the mixture as a raw material and a binder from the injection-molded material.
It has been found that the above problem can be solved by including a step of removing the binder and a step of sintering fine powder in the binder removed.
【０００５】無加圧下の焼結において、粉粒体の焼結温
度は材質に依存するものではなく、粉体の持っている活
性化エネルギ−に依存する。すなわち、微粉であれば活
性化エネルギ−が高く焼結収縮するが、同じ温度でも粗
粉（粉粒体）であれば、お互いは焼結されにくく収縮し
ない。本発明において、平均粒子径が50μｍ以下の微粉
体では活性化エネルギ−が十分なので焼結収縮し、 200
μｍ以上の粉粒体では活性化エネルギ−が低いので焼結
収縮しない。また、微粉体と粉粒体とでは焼結し金属的
結合をなす。In the pressureless sintering, the sintering temperature of the powder or granular material does not depend on the material but on the activation energy of the powder. That is, fine powders have high activation energy and undergo sinter shrinkage, but coarse powders (powder particles) do not easily sinter with each other and do not shrink even at the same temperature. In the present invention, fine powders having an average particle size of 50 μm or less have sufficient activation energy to cause sinter shrinkage.
Since the activation energy is low in the case of powder particles of μm or more, sintering shrinkage does not occur. Further, the fine powder and the granular material are sintered to form a metallic bond.
【０００６】本発明における貴金属又は貴金属合金の微
粉体と粉粒体は、金、金合金、白金族、白金族合金、
銀、銀合金、および、それらの組み合わせ、または、こ
れらの貴金属と他の金属の組み合わせが用いられる。貴
金属又は貴金属合金の微粉体は、平均粒子径が50μｍ以
下が好ましく、50μｍを超えると焼結密度が上がりにく
くなり、より好ましくは30μｍ以下がよい。また、貴金
属又は貴金属合金の粉粒体は平均粒子径を 200μｍ〜２
ｍｍとしたものが好ましく、 200μｍ以下だと細かく分
散され過ぎて色調差が出にくくなり、２ｍｍ以上だと通
常の射出成形機では製造できなくなり、より好ましくは
300μｍ〜１ｍｍにするとよい。貴金属又は貴金属合金
の微粉体と粉粒体の混合比は、微粉体50〜99体積％に対
し粉粒体１〜50体積％が好ましく、微粉体が50体積％以
下になると、焼結収縮時、粉粒体どうしがぶつかり合っ
て収縮の妨げになり、より好ましくは微粉体75〜95体積
％に対し粉粒体５〜25体積％にするとよい。The fine powder and powder of precious metal or precious metal alloy in the present invention are gold, gold alloy, platinum group, platinum group alloy,
Silver, silver alloys, and combinations thereof, or combinations of these noble metals with other metals are used. The fine particles of a noble metal or a noble metal alloy preferably have an average particle size of 50 μm or less, and when the average particle size exceeds 50 μm, it is difficult to increase the sintered density, and more preferably 30 μm or less. The noble metal or noble metal alloy powder has an average particle diameter of 200 μm to 2 μm.
The thickness is preferably 200 mm or less, and when it is 200 μm or less, the particles are too finely dispersed to cause a color difference, and when it is 2 mm or more, it cannot be manufactured by an ordinary injection molding machine, and more preferably.
It is good to set it to 300 μm to 1 mm. The mixing ratio of the fine powder of the noble metal or precious metal alloy and the powder and granules is preferably 1 to 50 volume% of the powder to 50 to 99 volume% of the fine powder. The powders and granules collide with each other to hinder the shrinkage, and it is more preferable that the powder and granules be 5 to 25 volume% with respect to 75 to 95 volume% of the fine powder.
【０００７】本発明において、一般的には２種の異色貴
金属が用いられるが、３種以上の異色貴金属（１種の微
粉体に対して２種以上の異色粉粒体）の混合も可能であ
る。また、本発明の装飾品としては、指輪、ピアス、イ
ヤリング、ブレスレッド、ペンダント、チェ−ン等、貴
金属からなるほとんどの装飾品に適用できる。本発明で
製造された焼結体は、焼結後の成形品を切削、圧延（指
輪の径をロ−ル圧延して大きくするロ−ル拡張加工を含
む）、ダイヤカット、研磨等の後加工をしてもよい。In the present invention, generally two kinds of different color noble metals are used, but it is also possible to mix three or more kinds of different color noble metals (one kind of fine powder and two or more kinds of different color powder particles). is there. The ornament of the present invention can be applied to most ornaments made of precious metals such as rings, piercings, earrings, bracelets, pendants and chains. The sintered body produced according to the present invention is obtained by cutting, rolling (including roll expansion processing for rolling the diameter of the ring to enlarge it), diamond cutting, polishing, etc. of the molded product after sintering. You may process.
【０００８】[0008]
【作用】本考案は、以上のように３次元で立体感ある焼
結体の製造が可能になるとともに、微粉体と粉粒体の混
合粉末の成形体からバインダ−を除去し、焼結すると
き、微粉体は焼結されても、粉粒体どうしはほとんど焼
結されない。したがって、焼結した貴金属微粉体の地の
なかに、異色貴金属の粉粒体の球が分散した状態にな
り、いわゆる水玉模様貴金属装飾品が得られる。The present invention makes it possible to manufacture a three-dimensionally three-dimensionally sintered body as described above, and removes the binder from the compact of the mixed powder of fine powder and granular material and sinters it. At this time, even if the fine powder is sintered, the powder particles are hardly sintered together. Therefore, spheres of powder particles of a precious metal of a different color are dispersed in the ground of the sintered precious metal fine powder, and a so-called polka dot precious metal ornament is obtained.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面により説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】（実施例１）金75重量％、銀12.5重量％、
および銅12.5重量％よりなる平均粒子径約10μｍの金合
金（イェロ−ゴ−ルド、黄金色）の微粉体90体積％と、
白金90重量％とパラジウム10重量％よりなる平均粒子径
約 500μｍの白金合金（Pt 900）の粉粒体10体積％を混
合して原料粉とする。この原料粉 100に対し、熱可塑性
樹脂よりなるバインダ−を53.8（体積比で）添加して混
練機で混練し、ペレット状のコンパウンドを得た。(Example 1) 75% by weight of gold, 12.5% by weight of silver,
And 90% by volume of fine powder of gold alloy (yellow gold, golden color) consisting of 12.5% by weight of copper and having an average particle size of about 10 μm,
A raw material powder is prepared by mixing 10% by volume of a platinum alloy (Pt 900) powder of 90% by weight of platinum and 10% by weight of palladium with an average particle diameter of about 500 μm. To this raw material powder 100, 53.8 (volume ratio) of a binder made of a thermoplastic resin was added and kneaded with a kneader to obtain a pellet-shaped compound.
【００１１】このコンパウンドをノズル径３ｍｍの射出
成形機に投入し射出成形して、リング状の成形品を得
た。この成形品を大気雰囲気中において１０℃／Ｈの昇
温速度で３６０℃まで昇温させ、３６０℃で２Ｈキ−プ
してバインダ−を除去した後、水素雰囲気中において８
８０℃／３Ｈで焼結を行った。ここで、焼結されたのは
金合金の微粉体であって、白金合金の粉粒体どうしは焼
結されなかった。得られた焼結品はクラックの発生もな
く、健全な焼結体であった。この焼結品を、さらに、切
削で肩等を切り落とし、ロ−ル拡張成形してサイズを大
きくし、研磨して後加工をなし、所望サイズの指輪の完
成製品を得た。This compound was put into an injection molding machine having a nozzle diameter of 3 mm and injection-molded to obtain a ring-shaped molded product. This molded product was heated to 360 ° C. at a temperature rising rate of 10 ° C./H in the air atmosphere, and the binder was removed by 2H capping at 360 ° C. to remove the binder.
Sintering was performed at 80 ° C / 3H. Here, what was sintered was the fine powder of the gold alloy, and the particles of the platinum alloy were not sintered. The obtained sintered product was a healthy sintered body without cracks. Shoulders and the like were cut off from this sintered product, the size was expanded by roll expansion molding, and post-processing was performed by polishing to obtain a finished product of a ring of a desired size.
【００１２】仕上がった完成製品は凹凸やクラックがな
く、その表面にはイェロ−ゴ−ルドの地の中にプラチナ
合金（Pt 900）の球が埋め込まれた模様、いわゆる黄金
色の地に白い水玉模様の浮かぶ独特の模様が創出されて
いた。The finished product has no irregularities or cracks, and the surface is a pattern of platinum alloy (Pt 900) spheres embedded in the yellow gold ground, so-called golden ground with white polka dots. A unique pattern with a floating pattern was created.
【００１３】（実施例２）金75重量％、銀12.5重量％、
および銅12.5重量％よりなる平均粒子径約30μｍの金合
金（イェロ−ゴ−ルド、黄金色）の微粉末70体積％と、
金75重量％およびパラジュ−ム25重量％よりなる平均粒
子径約１ｍｍの白色金合金（ホワイトゴ−ルド、白金
色）の粉粒体30体積％を混合して原料粉とする。この原
料粉 100に対し、熱可塑性樹脂よりなるバインダ−を4
2.9（体積比で）添加して混練機で混練し、ペレット状
のコンパウンドを得た。以下、実施例１と同一の工程で
焼結体および指輪の完成品を得た。この焼結体および指
輪の完成品にはクラックの発生がなく、黄金色の地に白
い水玉模様の浮かぶ独特の模様が創出されていた。(Example 2) 75% by weight of gold, 12.5% by weight of silver,
And 70% by volume of fine powder of gold alloy (yellow gold, golden color) consisting of 12.5% by weight of copper and having an average particle size of about 30 μm,
A raw material powder is prepared by mixing 30% by volume of a powder of a white gold alloy (white gold, platinum color) consisting of 75% by weight of gold and 25% by weight of palladium and having an average particle diameter of about 1 mm. To 100 of this raw material powder, 4 binders made of thermoplastic resin
2.9 (volume ratio) was added and the mixture was kneaded with a kneader to obtain a pelletized compound. Thereafter, a sintered body and a finished ring product were obtained in the same steps as in Example 1. There were no cracks in the finished product of this sintered body and the ring, and a unique pattern with a white polka dot pattern floating on the golden background was created.
【００１４】（比較例１）金75重量％、銀12.5重量％、
および銅12.5重量％よりなる平均粒子径約10μｍの金合
金（イェロ−ゴ−ルド、黄金色）の微粉末40体積％と、
平均粒子径約 500μｍの白金合金（Pt 900）の粉粒体60
体積％を混合して原料粉とする。この原料粉 100に対
し、熱可塑性樹脂よりなるバインダ−を53.8（体積比
で）添加して混練機で混練し、ペレット状のコンパウン
ドを得た。このコンパウンドで射出成形、バインダ−除
去、焼結の各工程を行い焼結体を得た。この焼結体には
クラックが発生しており、指輪としては使用できないも
のであった。(Comparative Example 1) 75% by weight of gold, 12.5% by weight of silver,
And 40% by volume of fine powder of gold alloy (yellow gold, golden color) having an average particle size of about 10 μm and consisting of 12.5% by weight of copper,
Platinum alloy (Pt 900) powder 60 with an average particle size of about 500 μm
Volume% is mixed to obtain raw material powder. To this raw material powder 100, 53.8 (volume ratio) of a binder made of a thermoplastic resin was added and kneaded with a kneader to obtain a pellet-shaped compound. With this compound, the steps of injection molding, binder removal, and sintering were performed to obtain a sintered body. This sintered body had cracks and could not be used as a ring.
【００１５】[0015]
【発明の効果】本発明は以上の構成により、３次元的な
立体感のある細かい形状を造ることができるとともに、
焼結したある色の貴金属の地の中に、異色貴金属の球が
分散して埋め込まれた、いわゆる水玉模様が得られ、か
つ、射出成形による大量生産で低コストにもなる等の利
点がある。EFFECTS OF THE INVENTION With the above-described structure, the present invention can make a fine shape with a three-dimensional three-dimensional effect.
There are advantages such as so-called polka dot pattern in which spheres of different color precious metal are dispersed and embedded in the sintered precious metal ground, and mass production by injection molding also results in low cost. .
【図１】本発明の実施例の工程を示す工程図である。FIG. 1 is a process drawing showing a process of an example of the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 元 神奈川県平塚市西八幡１丁目４番３号 株 式会社パイロット平塚工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Gen Sato 1-3-4 Nishihachiman, Hiratsuka City, Kanagawa Prefecture Pilot Hiratsuka Factory
Claims (3)
脂よりなるバインダ−を混練した原料を用いて、射出成
形、バインダ−除去、焼結の各工程を行って得られる貴
金属焼結体であって、前記焼結した微粉体の貴金属又は
貴金属合金内に、前記微粉体の貴金属又は貴金属合金と
異色の貴金属又は貴金属合金で平均粒子径を 200μｍ〜
２ｍｍとした粉粒体が、散在していることを特徴とする
貴金属焼結体。1. A noble metal sintered body obtained by performing injection molding, binder removal, and sintering steps using a raw material obtained by kneading a powder of a noble metal or a noble metal alloy and a binder made of a thermoplastic resin. In the sintered fine powder noble metal or noble metal alloy, the average particle size of the noble metal or noble metal alloy different from the noble metal or noble metal alloy of the fine powder is 200 μm or more.
A precious metal sintered body characterized in that powder particles of 2 mm are scattered.
が50μｍ以下の微粉体と、前記微粉体と異色で平均粒子
径が 200μｍ〜２ｍｍの貴金属又は貴金属合金の粉粒体
とで、前記微粉体が50体積％以上となる混合物を形成す
る工程と、前記混合物に熱可塑性樹脂よりなるバインダ
−を添加して混練する工程と、その混合物を原料として
射出成形する工程と、その射出成形されたものからバイ
ンダ−を除去する工程と、そのバインダ−を除去したも
のの中の微粉体のみを焼結する工程とを含むことを特徴
とする貴金属焼結体の製造方法。2. A fine powder comprising a noble metal or a noble metal alloy and having an average particle size of 50 μm or less, and a powder of a noble metal or noble metal alloy having a mean particle size of 200 μm to 2 mm, which is different from the fine powder. Of 50% by volume or more, a step of kneading the mixture with a binder made of a thermoplastic resin, a step of injection molding the mixture as a raw material, and an injection molding thereof. A method for producing a precious metal sintered body, comprising: a step of removing the binder from the step; and a step of sintering only the fine powder in the binder-free material.
は金合金であり、前記粉粒体が前記微粉体と色の異なる
金又は金合金であるか、または、白金族又は白金族合金
である、請求項１又は２記載の貴金属焼結体およびその
製造方法。3. The fine powder of the noble metal or precious metal alloy is gold or a gold alloy, and the powder or granular material is gold or a gold alloy having a color different from that of the fine powder, or a platinum group alloy or a platinum group alloy. The precious metal sintered body according to claim 1 or 2, and a method for producing the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339623A JPH06158102A (en) | 1992-11-26 | 1992-11-26 | Noble metal sintered compact and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339623A JPH06158102A (en) | 1992-11-26 | 1992-11-26 | Noble metal sintered compact and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06158102A true JPH06158102A (en) | 1994-06-07 |
Family
ID=18329253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4339623A Pending JPH06158102A (en) | 1992-11-26 | 1992-11-26 | Noble metal sintered compact and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06158102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003028927A1 (en) * | 2001-09-28 | 2003-04-10 | Mitsubishi Materials Corporation | Silver powder for silver clay and silver clay comprising the silver powder |
| JP2013508539A (en) * | 2009-10-14 | 2013-03-07 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニー | Method |
| CN109304462A (en) * | 2018-09-19 | 2019-02-05 | 东莞市精微新材料有限公司 | A kind of manufacturing process of noble metal commemorative coin, souvenir badge |
-
1992
- 1992-11-26 JP JP4339623A patent/JPH06158102A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003028927A1 (en) * | 2001-09-28 | 2003-04-10 | Mitsubishi Materials Corporation | Silver powder for silver clay and silver clay comprising the silver powder |
| US7081149B2 (en) | 2001-09-28 | 2006-07-25 | Mitsubishi Materials Corporation | Silver powder for silver clay and silver clay containing this silver powder |
| JP2013508539A (en) * | 2009-10-14 | 2013-03-07 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニー | Method |
| JP2016135913A (en) * | 2009-10-14 | 2016-07-28 | アングロ プラチナム マーケティング リミテッド | Method |
| CN109304462A (en) * | 2018-09-19 | 2019-02-05 | 东莞市精微新材料有限公司 | A kind of manufacturing process of noble metal commemorative coin, souvenir badge |
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