JPH0718301A - Noble metal plastic composition - Google Patents
Noble metal plastic compositionInfo
- Publication number
- JPH0718301A JPH0718301A JP5187141A JP18714193A JPH0718301A JP H0718301 A JPH0718301 A JP H0718301A JP 5187141 A JP5187141 A JP 5187141A JP 18714193 A JP18714193 A JP 18714193A JP H0718301 A JPH0718301 A JP H0718301A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- noble metal
- alloy
- metal
- plastic composition
- 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 49
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 229920003023 plastic Polymers 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 title claims description 28
- 239000000843 powder Substances 0.000 claims abstract description 77
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims description 9
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 3
- -1 or Co. Alloy Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910001316 Ag alloy Inorganic materials 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- 229910001020 Au alloy Inorganic materials 0.000 claims 1
- 229910000599 Cr alloy Inorganic materials 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- 229910000978 Pb alloy Inorganic materials 0.000 claims 1
- 229910001252 Pd alloy Inorganic materials 0.000 claims 1
- 229910001260 Pt alloy Inorganic materials 0.000 claims 1
- 229910001069 Ti alloy Inorganic materials 0.000 claims 1
- 229910000756 V alloy Inorganic materials 0.000 claims 1
- 229910001297 Zn alloy Inorganic materials 0.000 claims 1
- 229910001093 Zr alloy Inorganic materials 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000002923 metal particle Substances 0.000 abstract 1
- 238000007665 sagging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000010970 precious metal Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000013329 compounding Methods 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000012461 cellulose resin Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229960002380 dibutyl phthalate Drugs 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920003087 methylethyl cellulose Polymers 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 229910000923 precious metal alloy Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、美術工芸品等の造形
用材料として用いて好適な貴金属可塑性組成物に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noble metal plastic composition suitable for use as a material for modeling arts and crafts.
【０００２】[0002]
【従来の技術】従来、美術工芸品等の造形用材料とし
て、Ａｕ、Ａｇ、Ｐｔ、Ｐｄ等の貴金属またはこれらの
金属を主成分とする合金材料を用いて、複雑な形状の物
品を形成することが行われているが、その加工方法の主
たるものが、鋳造や圧延であった。2. Description of the Related Art Conventionally, a noble metal such as Au, Ag, Pt, or Pd or an alloy material containing these metals as a main component is used as a molding material for arts and crafts to form an article having a complicated shape. However, casting and rolling are the main processing methods.
【０００３】しかしながら、このような加工方法である
と、大掛かりな設備が必要となるばかりでなく、金属に
よっては、例えば、Ｐｔでは融点が高いために、鋳造に
よる成形が困難であるといった問題点が残されている。However, such a processing method not only requires large-scale equipment, but also has a problem that depending on the metal, for example, Pt has a high melting point, which makes molding by casting difficult. It is left.
【０００４】そこで、本願出願人は、前記貴金属粉や貴
金属合金粉、金属粉、あるいは、金属合金粉と、水溶性
バインダーとを混合して、成形性に優れた粘土状の貴金
属可塑性組成物を先に提案した。そして、前記貴金属粉
や貴金属合金粉、金属粉、あるいは、金属合金粉は、液
中還元法、ガスアトマイズ法によって製造される球形形
状の粉末が用いられていた。Therefore, the applicant of the present application mixes the above-mentioned noble metal powder, noble metal alloy powder, metal powder, or metal alloy powder with a water-soluble binder to obtain a clay-like noble metal plastic composition having excellent moldability. I proposed earlier. As the noble metal powder, the noble metal alloy powder, the metal powder, or the metal alloy powder, a spherical powder produced by the in-liquid reduction method or the gas atomizing method has been used.
【０００５】[0005]
【発明が解決しようとする課題】ところで、前述した貴
金属粘土は、成形性に優れ、種々の複雑な形状を容易に
形成することができる点において、極めて有用な造形材
料であるが、なお、つぎのような問題点が残されてい
る。By the way, the above-mentioned precious metal clay is a very useful molding material in that it is excellent in moldability and can easily form various complicated shapes. There are still some problems.
【０００６】すなわち、前記金属粘土は、成形、乾燥、
焼成の各工程を経て貴金属物品となされるが、乾燥時に
おいて収縮してしまうといった問題点がある。例えば、
型成形する場合、割型内に貴金属粘土を詰め込み、割型
の上型をはずし乾燥させると、型どおりの成形体が得ら
れるはずである。しかし、そのように試みたところ、成
形体にひび割れが生じてしまい、その理由を調べたとこ
ろ、乾燥時の収縮に原因があることが判明した。That is, the metal clay is molded, dried,
Although it is made into a precious metal article through each step of firing, there is a problem that it shrinks during drying. For example,
When molding, the noble metal clay is packed in the split mold, and the upper mold of the split mold is removed and dried, so that a molded product as the mold should be obtained. However, when such an attempt was made, cracks were formed in the molded body, and when the reason was examined, it was found that there was a cause for shrinkage during drying.
【０００７】[0007]
【課題を解決するための手段】本発明は、前述した従来
の不具合を有効に解決すべくなされたもので、貴金属粉
および／または貴金属合金粉、または、貴金属粉または
貴金属合金粉と金属粉または金属合金粉との混合粉から
選ばれる粉体と有機バインダーとの混合物からなる貴金
属可塑性組成物において、前記貴金属粉、貴金属合金
粉、金属粉、あるいは、金属合金粉に、針状、樹枝状、
あるいは、涙滴状等の非球形形状の粉体を用いればよい
ことが判明した。SUMMARY OF THE INVENTION The present invention has been made to effectively solve the above-mentioned conventional inconveniences, and comprises noble metal powder and / or noble metal alloy powder, or noble metal powder or noble metal alloy powder and metal powder or In the precious metal plastic composition comprising a mixture of a powder selected from a mixed powder with a metal alloy powder and an organic binder, the precious metal powder, a precious metal alloy powder, a metal powder, or a metal alloy powder, needle-shaped, dendritic,
Alternatively, it was found that a non-spherical powder such as teardrop-shaped powder may be used.
【０００８】[0008]
【作用】本発明に係る貴金属可塑性組成物は、貴金属
粉、金属粉、あるいは、これらの合金粉の一部または全
部を、針状、樹枝状、あるいは、涙滴状等の非球形形状
とすることにより、得られた貴金属可塑性組成物を造形
後に乾燥させても、殆ど収縮のない金属物品が得られ
る。これは、前記貴金属粉、金属粉、あるいは、これら
の合金粉を前述した形状とすることにより、乾燥後に金
属間に空間部が形成されることによるものと考えられ
る。In the noble metal plastic composition according to the present invention, a part or all of the noble metal powder, the metal powder, or the alloy powder thereof is made into a non-spherical shape such as a needle shape, a dendritic shape, or a teardrop shape. Thereby, even if the obtained noble metal plastic composition is dried after being shaped, a metal article with almost no shrinkage can be obtained. It is considered that this is because the noble metal powder, the metal powder, or the alloy powder thereof has the above-described shape, whereby a space is formed between the metals after drying.
【０００９】ここで、貴金属粉は、平均粒径が２００μ
ｍ以下のものが利用できる。この貴金属粉末をなす貴金
属には、Ａｕ、Ａｇ、Ｐｔ、および、Ｐｂあるいはこれ
らの合金の内から選ばれる１種または２種以上が用いら
れる。この貴金属粉末は、貴金属可塑性組成物を構成す
る主成分であり、これらの貴金属粉（Ｗ）の形状は、図
１に示すような樹枝状（これは、電解法により析出させ
たのちに粉砕することにより得られる）、図２に示すよ
うな薄片状の形状（これは、原料粉を搗砕棒により粉砕
する機械的粉砕法、あるいは、ボールミルやアトライタ
ー法による粉末加工により得られる）、図３に示すよう
な凹凸のある粒状あるいは涙滴状の形状、図４に示すよ
うな針状の形状（これらは水あるいは油を用いたアトマ
イズ法によって得られる）、図５に示すような表面に多
数の角部を有する形状（これは、クラッシャーやハンマ
ーミル等を用いた機械的粉砕法によって得られる）、図
６に示すような表面の凹凸は少ないが針状に伸びた形状
（これら水あるいは油を用いたアトマイズ法によって得
られる）、図７に示すような海綿状（これは還元剤を用
いた科学的製法によって得られる）のもの等が用いられ
る。このような非球形形状の金属粉を用いることによ
り、焼結後の金属粉間に多くの空間部を形成して、造形
時と焼結後における容積変化を抑制する。これは後述す
る金属粉あるいはその合金粉も同様である。The precious metal powder has an average particle size of 200 μm.
Those of m or less can be used. As the noble metal forming the noble metal powder, one kind or two kinds or more selected from Au, Ag, Pt, and Pb or alloys thereof is used. This noble metal powder is a main component constituting the noble metal plastic composition, and the noble metal powder (W) has a dendritic shape as shown in FIG. 1 (which is pulverized after being deposited by an electrolytic method). 2) (a flaky shape as shown in FIG. 2 (this is obtained by a mechanical pulverizing method of pulverizing raw material powder with a crushing rod, or a powder processing by a ball mill or an attritor method), FIG. No. 3 irregular shape or teardrop-like shape as shown in FIG. 3, needle-like shape as shown in FIG. 4 (these are obtained by an atomizing method using water or oil), on the surface as shown in FIG. A shape having a large number of corners (this can be obtained by a mechanical crushing method using a crusher, a hammer mill, etc.), a shape having a small number of surface irregularities as shown in FIG. Oil Obtained by stomach atomizing method), those like the spongy, as shown in FIG. 7 (which is obtained by scientific method using a reducing agent) is used. By using such a non-spherical metal powder, many space portions are formed between the metal powders after sintering, and the volume change during modeling and after sintering is suppressed. The same applies to the metal powder or alloy powder thereof described later.
【００１０】（Ｂ）有機バインダーの組成 有機バインダーの成分は、水溶性セルローズ系樹脂をベ
ースとしたものや、アクリル系樹脂等の熱可塑性樹脂を
ベースとしたバインダーが用いられ、以下に水溶性セル
ローズ系樹脂を用いたバインダーの一例について示す。(B) Composition of Organic Binder As a component of the organic binder, a binder based on a water-soluble cellulose resin or a binder based on a thermoplastic resin such as an acrylic resin is used. An example of a binder using a resin is shown.
【００１１】前記水溶性セルローズ系樹脂は、メチルセ
ルローズ、エチルセルローズ等が用いられ、貴金属可塑
性組成物に可撓性および形状保持特性を付与する効果が
あり、その配合量は０．１重量％〜５重量％の範囲に設
定される。As the water-soluble cellulose resin, methyl cellulose, ethyl cellulose or the like is used, which has the effect of imparting flexibility and shape-retaining characteristics to the noble metal plastic composition, and the compounding amount thereof is 0.1% by weight or more. It is set in the range of 5% by weight.
【００１２】前記油脂は、フタル酸、オレイン酸等の高
級有機酸、あるいは、フタル酸ジＮブチル、フタル酸エ
チルヘキチル、ソルビタンモノオレート等の高級有機化
合物、さらに、ポリエチレングリコール等の高級アルコ
ール等が用いられ、貴金属可塑性組成物の可塑性調整
や、造形時におけるてや造形治具への付着を抑制する効
果があり、その配合量は、０．１重量％〜５重量％の範
囲に設定される。As the oil and fat, higher organic acids such as phthalic acid and oleic acid, higher organic compounds such as diN-butyl phthalate, ethylhexyl phthalate and sorbitan monooleate, and higher alcohols such as polyethylene glycol are used. Therefore, it has the effect of adjusting the plasticity of the noble metal plastic composition and suppressing the adhesion of the noble metal plastic composition to the edge and the molding jig at the time of molding, and the compounding amount thereof is set in the range of 0.1% by weight to 5% by weight.
【００１３】前記低級アルコールは、エチレングリコー
ル、グリセリン等が用いられ、得られた貴金属可塑性組
成物の造形時におけるひび割れ等を抑制する効果があ
り、その配合量は５重量％以下に設定される。As the lower alcohol, ethylene glycol, glycerin, or the like is used, and it has an effect of suppressing cracks and the like during molding of the obtained noble metal plastic composition, and its compounding amount is set to 5% by weight or less.
【００１４】前記界面活性剤は、ラウリル硫酸ナトリウ
ム等が用いられ、貴金属可塑性組成物の製造時における
配合物の混練・混合が円滑化され、それに要する時間を
短縮する効果があるが、製造条件によっては必ずしも混
合する必要はない。そして、混合時の配合量は０．５重
量％以下に設定される。Sodium lauryl sulfate or the like is used as the surfactant, which has the effect of facilitating the kneading and mixing of the compound during the production of the noble metal plastic composition and reducing the time required for it. Do not necessarily have to be mixed. And the compounding quantity at the time of mixing is set to 0.5% by weight or less.
【００１５】（Ｃ）金属粉あるいは金属合金粉 これらは、Ａｌ、Ｎｉ、Ｃｏ、Ｆｅ、Ｃｕ、Ｔｉ、Ｚ
ｎ、Ｓｎ、Ｚｒ、Ｖ、Ｐｂ、および、Ｃｒ、あるいは、
これらの合金から選ばれる１種または２種以上の混合粉
が用いられ、得られる貴金属可塑性組成物の強度や色調
を調整するために添加されるもので、その添加量は目的
とする強度や色調に応じて適宜設定される。(C) Metal powder or metal alloy powder These are Al, Ni, Co, Fe, Cu, Ti and Z.
n, Sn, Zr, V, Pb, and Cr, or
One or more kinds of mixed powders selected from these alloys are used and added to adjust the strength and color tone of the resulting noble metal plastic composition, and the addition amount is the desired strength and color tone. It is appropriately set according to.
【００１６】そして、これらの貴金属粉末は、図１ない
し図７にＷ１〜Ｗ７で示す形状のものが用いられる。As the noble metal powder, those having the shapes shown by W1 to W7 in FIGS. 1 to 7 are used.
【００１７】[0017]
【実施例】以下、実施例に沿って本発明を説明する。ま
ず、メチルセルローズ；１０ｇ、フタル酸Ｎジオクチ
ル；５ｇ、ポリエチレングリコール５ｇ、ラウリル硫酸
ナトリウム；０．１ｇ、エチレングリコール；５ｇ、温
度９０℃の水；９０ｇをガラス容器に入れ、よく撹拌し
たのち室温まで冷却して有機バインダーを製作した。EXAMPLES The present invention will be described below with reference to examples. First, methyl cellulose; 10 g, N-dioctyl phthalate; 5 g, polyethylene glycol 5 g, sodium lauryl sulfate; 0.1 g, ethylene glycol; 5 g, water at a temperature of 90 ° C .; 90 g are put in a glass container, stirred well, and then allowed to reach room temperature. After cooling, an organic binder was manufactured.
【００１８】そして、この有機バインダー１０ｇと、表
１に実施例１〜実施例８で示す組成、平均粒径、およ
び、粒子形状の金属粉末９０ｇとを乳鉢で充分に混合し
て各貴金属可塑性組成物の試料を製作した。なお、表１
中において、粒子形状については、図１ないし図７にお
いて使用した符号によって示した。Then, 10 g of this organic binder and 90 g of the metal powder having the compositions, average particle diameters and particle shapes shown in Table 1 for Examples 1 to 8 were thoroughly mixed in a mortar and each noble metal plastic composition. The sample of the thing was produced. In addition, Table 1
The particle shape is indicated by the reference numerals used in FIGS. 1 to 7.
【００１９】[0019]
【表１】 [Table 1]
【００２０】そして、これらの各実施例１〜実施例８の
試料によって、直径１０ｍｍ、長さ２０ｍｍの円柱状に
押し出し、これらを横向きに寝かせ、大気中で温度２５
℃の条件で３日間放置して乾燥させ、乾燥後における試
料の垂直方向の長さＨと水平方向の長さＤ、および、試
料の側面に発生した長さ０．５ｍｍ以上のクラックの数
を計測し、その結果を表１に示す。また、比較のため
に、表１に比較例として示す金属組成、平均粒径、粒子
形状を有する金属粉末を用いた貴金属可塑性組成物を製
作し、各実施例と同様の試料を作製し、同様の評価を行
ないその結果を表１に示す。Then, each of the samples of Examples 1 to 8 was extruded into a cylindrical shape having a diameter of 10 mm and a length of 20 mm, and these were laid sideways, and the temperature was set to 25 in the atmosphere.
The sample is left to dry for 3 days under the condition of ℃, and the length H in the vertical direction and the length D in the horizontal direction of the sample after drying, and the number of cracks having a length of 0.5 mm or more generated on the side surface of the sample are determined. The measurement was performed and the results are shown in Table 1. In addition, for comparison, a noble metal plastic composition using metal powder having a metal composition, an average particle size, and a particle shape shown in Table 1 as a comparative example was manufactured, and a sample similar to each example was manufactured. Was evaluated and the results are shown in Table 1.
【００２１】この結果から明らかなように、比較例の球
状の金属粉末を用いた試料においては、乾燥中に変形
し、しかも、クラックの発生が多く見られる。これに対
し、本発明の各実施例における試料においては、いずれ
においても乾燥中の変形が小さく等方的に収縮してお
り、しかも、クラックの発生が少ないことが分かる。As is clear from these results, in the sample using the spherical metal powder of the comparative example, deformation occurred during drying and more cracks were observed. On the other hand, in each of the samples of the examples of the present invention, it is understood that the deformation during drying is small and isotropically contracted, and the number of cracks is small.
【００２２】したがって、製作した塑像物が、運搬、静
置、および、乾燥の期間中におけるだれやクリープの発
生が抑制され、所望形状の焼結体が得られる。また、ク
ラック発生数が少なく、貴金属美術工芸品や装飾品、あ
るいは、容器などの製造用素材としてきわめて有用であ
る。Therefore, the produced plastic object is suppressed from dripping or creeping during transportation, standing and drying, and a sintered body having a desired shape can be obtained. In addition, since the number of cracks is small, it is extremely useful as a material for manufacturing precious metal arts and crafts, ornaments, and containers.
【００２３】[0023]
【発明の効果】以上説明したように、本発明に係わる貴
金属可塑性組成物によれば、乾燥中におけるだれやクラ
ックの発生を抑制し、もって、金属物品の造形用素材と
しての品質を大幅に高めることができる等の優れた効果
を奏する。As described above, the noble metal plastic composition according to the present invention suppresses the occurrence of dripping or cracking during drying, thereby significantly improving the quality of a metal article as a molding material. It has excellent effects such as being able to.
【図１】本発明に使用される金属粉の形状を示す概略図
である。FIG. 1 is a schematic view showing the shape of a metal powder used in the present invention.
【図２】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 2 is a schematic view of another example of the metal powder used in the present invention.
【図３】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 3 is a schematic view of another example of the metal powder used in the present invention.
【図４】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 4 is a schematic view of another example of the metal powder used in the present invention.
【図５】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 5 is a schematic view of another example of the metal powder used in the present invention.
【図６】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 6 is a schematic view of another example of the metal powder used in the present invention.
【図７】本発明に使用される金属粉の他の例を概略図で
ある。FIG. 7 is a schematic view of another example of the metal powder used in the present invention.
Ｗ 貴金属（金属）粉 W precious metal (metal) powder
Claims (5)
たは、貴金属粉または貴金属合金粉と金属粉または金属
合金粉との混合粉から選ばれる粉体と有機バインダーと
の混合物からなる貴金属可塑性組成物において、前記貴
金属粉、貴金属合金粉、金属粉、あるいは、金属合金粉
の一部または全部が、針状、樹枝状、あるいは、涙滴状
等の非球形形状であることを特徴とする貴金属可塑性組
成物。1. A noble metal plastic composition comprising a mixture of a noble metal powder and / or a noble metal alloy powder, or a powder selected from a noble metal powder or a noble metal alloy powder and a metal powder or a metal alloy powder, and an organic binder. In the above, the noble metal powder, the noble metal alloy powder, the metal powder, or a part or all of the metal alloy powder has a non-spherical shape such as a needle shape, a dendritic shape, or a teardrop shape. Composition.
び、Ｐｄから選ばれる１種または２種以上の混合粉であ
ることを特徴とする請求項１記載の貴金属可塑性組成
物。2. The noble metal plastic composition according to claim 1, wherein the noble metal powder is one or a mixture of two or more selected from Au, Ag, Pt, and Pd.
金、Ｐｔ合金、および、Ｐｄ合金から選ばれる１種また
は２種以上の混合粉であることを特徴とする請求項１記
載の貴金属可塑性組成物。3. The noble metal plastic powder according to claim 1, wherein the noble metal alloy powder is one kind or a mixed powder of two or more kinds selected from an Au alloy, an Ag alloy, a Pt alloy, and a Pd alloy. Composition.
Ｃｕ、Ｔｉ、Ｚｎ、Ｓｎ、Ｚｒ、Ｖ、Ｐｂおよび、Ｃｒ
から選ばれる１種または２種以上の混合粉であることを
特徴とする請求項１記載の貴金属可塑性組成物。4. The metal powder is Al, Ni, Co, Fe,
Cu, Ti, Zn, Sn, Zr, V, Pb and Cr
The noble metal plastic composition according to claim 1, which is a mixed powder of one kind or two or more kinds selected from the following.
合金、Ｆｅ合金、Ｃｕ合金、Ｔｉ合金、Ｚｎ合金、Ｓｎ
合金、Ｚｒ合金、Ｖ合金、Ｐｂ合金および、Ｃｒ合金か
ら選ばれる１種または２種以上の混合粉であることを特
徴とする請求項１記載の貴金属可塑性組成物。5. The metal powder is an Al alloy, a Ni alloy, or Co.
Alloy, Fe alloy, Cu alloy, Ti alloy, Zn alloy, Sn
The noble metal plastic composition according to claim 1, which is a mixed powder of one kind or two kinds or more selected from an alloy, a Zr alloy, a V alloy, a Pb alloy, and a Cr alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5187141A JPH0718301A (en) | 1993-06-30 | 1993-06-30 | Noble metal plastic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5187141A JPH0718301A (en) | 1993-06-30 | 1993-06-30 | Noble metal plastic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0718301A true JPH0718301A (en) | 1995-01-20 |
Family
ID=16200844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5187141A Pending JPH0718301A (en) | 1993-06-30 | 1993-06-30 | Noble metal plastic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718301A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180675A (en) * | 2015-05-05 | 2016-12-07 | 光洋应用材料科技股份有限公司 | Silver clay |
| JP2017014548A (en) * | 2015-06-29 | 2017-01-19 | 光洋應用材料科技股▲分▼有限公司 | Silver clay |
-
1993
- 1993-06-30 JP JP5187141A patent/JPH0718301A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180675A (en) * | 2015-05-05 | 2016-12-07 | 光洋应用材料科技股份有限公司 | Silver clay |
| JP2017014548A (en) * | 2015-06-29 | 2017-01-19 | 光洋應用材料科技股▲分▼有限公司 | Silver clay |
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