JPH04147902A - Gold powder and production thereof - Google Patents
Gold powder and production thereofInfo
- Publication number
- JPH04147902A JPH04147902A JP2270938A JP27093890A JPH04147902A JP H04147902 A JPH04147902 A JP H04147902A JP 2270938 A JP2270938 A JP 2270938A JP 27093890 A JP27093890 A JP 27093890A JP H04147902 A JPH04147902 A JP H04147902A
- Authority
- JP
- Japan
- Prior art keywords
- gold
- powder
- clay
- gold powder
- weight
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
「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
適な合金金粘土に使用される金粉とその製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to gold powder used in alloyed gold clay suitable for use as a modeling material for arts and crafts, and a method for producing the same.
「従来の技術」
一般に、美術工芸品、装飾品などを製造するための造形
用材料として、粘土、陶土、磁土等の可塑性組成物が知
られている。従来、これらの造形用可塑性組成物を所望
の形状に造形し、窯で焼いて硬化させ、美術工芸品、装
飾品等を製造していた。"Prior Art" Generally, plastic compositions such as clay, china clay, and china clay are known as modeling materials for manufacturing arts and crafts, decorative items, and the like. Conventionally, these plastic compositions for modeling have been shaped into desired shapes and baked in a kiln to harden them to produce arts and crafts, decorative items, and the like.
しかし、陶磁器等は、極めて壊れやすく、機械加工も容
易でない。そこで、貴金属の粉末を含有した粘土が美術
工芸品等の材料として提案されるに至った。すなわち、
この種の粘土を所望の形に造形した後、焼成をおこなう
ことによって固化させ、金属製の美術工芸品等を得るも
のである。However, ceramics and the like are extremely fragile and difficult to machine. Therefore, clay containing precious metal powder has been proposed as a material for arts and crafts. That is,
After this type of clay is shaped into a desired shape, it is fired to solidify it to obtain metal arts and crafts.
粘土には、主成分として金の粉末が混ぜ合わされる他、
造形性の調整、焼成後における機械的強度の調整、およ
び色調の調整を行うために各種貴金属の合金の粉末が混
ぜ合わされる。貴金属の粉末を得るための方法は各種提
案されているが、合金の粉末は電解製練によって製造す
ることが不可能であるため、金の粉末、その他の貴金属
合金の粉末共に、ガスアトマイズ法により製造を行って
いた。The clay is mixed with gold powder as its main ingredient, and
Powders of various noble metal alloys are mixed together to adjust formability, mechanical strength after firing, and color tone. Various methods have been proposed for obtaining precious metal powder, but since alloy powder cannot be produced by electrolytic smelting, both gold powder and powder of other noble metal alloys have been produced by gas atomization. was going on.
「発明が解決しようとする課題」
ところで、ガスアトマイズ法によって貴金属の粉末を製
造した場合、粉末の平均粒径がばらつき、所望の粒径が
得られない。このため、質か良く、かつ、質の安定した
合金金粘土が得られず、また、合金金粘土の製造歩留り
も悪いという問題があった。"Problems to be Solved by the Invention" By the way, when noble metal powder is produced by the gas atomization method, the average particle size of the powder varies and a desired particle size cannot be obtained. For this reason, there was a problem that a gold alloy clay of good quality and stable quality could not be obtained, and the production yield of the gold alloy clay was also poor.
この発明は上述した事情に鑑みてなされたものであり、
質の良い金粉および該金粉を安定して得ることか可能な
製造方法を提供することを目的とする。This invention was made in view of the above circumstances,
The purpose of the present invention is to provide high-quality gold powder and a manufacturing method that allows stable production of the gold powder.
「課題を解決するための手段」
上記課題を解決するため、請求項１に記載の発明にあっ
ては、一粒体が、大径粒と、この大径粒の表面に付着し
た小径粒とから構成されることを特徴としている。"Means for Solving the Problem" In order to solve the above problem, in the invention according to claim 1, a single particle has a large-diameter particle and a small-diameter particle attached to the surface of the large-diameter particle. It is characterized by being composed of.
また、請求項２に記載の発明にあっては、ＡｕＣＩ ｓ
水溶液とＫ ２ Ｓ Ｏｓ水溶液とを温度−１０℃ない
し５℃に設定し、両者を混合することによって金粉を得
ることを特徴としている。Moreover, in the invention according to claim 2, AuCI s
The method is characterized in that the aqueous solution and the K 2 S Os aqueous solution are set at a temperature of -10° C. to 5° C., and gold powder is obtained by mixing the two.
「作用」
請求項１に記載の発明にあっては、金粉の一粒体の表面
に凹凸か形成されるから、この金粉にバインダあるいは
他の金属等を混合すると、このバインダあるいは他の金
属等と金粉とがからまり、粘土状になる。"Function" In the invention described in claim 1, since irregularities are formed on the surface of a single particle of gold powder, when a binder or other metal is mixed with this gold powder, this binder or other metal, etc. and gold powder become entangled and become clay-like.
また、請求項２に記載の発明にあっては、ＡｕＣｌ ｓ
水溶液とに２ＳＯｓ水溶液とを温度−１０℃ないし５℃
に設定し、両者を混合すると、２ＡｕＣｌｓ＋３に＊ｓ
Ｏｓ＋３Ｈｓ。Moreover, in the invention according to claim 2, AuCl s
The aqueous solution and the 2SOs aqueous solution at a temperature of -10°C to 5°C.
, and when both are mixed, 2AuCls+3 *s
Os+3Hs.
→２Ａｕ＋３に＊ＳＯｔ＋６８Ｃｌ
なる反応が起り、金粉末か析出する。そして、この金粉
における一粒体は、大径粒と、この大径粒の表面に付着
した小径粒とから構成される。→*SOt+68Cl reaction occurs in 2Au+3, and gold powder is precipitated. A single particle of this gold powder is composed of large-diameter particles and small-diameter particles attached to the surface of the large-diameter particles.
「実施例」 以下、図面を参照し、本発明の一実施例を説明する。"Example" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
本実施例による合金金粘土は、
金およびその他の合金による貴金属粉末：５０〜９０重
量％、
セルローズ系水溶性バインダー ０８〜８重量％、界面
活性剤・０．０３〜３重量％、
油脂 ０１〜３重量％、
を含有し、残りか水および不可避不純物からなる。The alloyed gold clay according to this example includes: Precious metal powder of gold and other alloys: 50-90% by weight, Cellulose-based water-soluble binder: 08-8% by weight, Surfactant: 0.03-3% by weight, Oil and fat: 01-90% by weight 3% by weight, with the remainder consisting of water and unavoidable impurities.
まず、上記各材料およびそれらの製造方法について説明
する。First, each of the above-mentioned materials and their manufacturing method will be explained.
（ａ）貴金属粉末
金粉末の粒径は、合金金粘土の成形性、乾燥時における
割れ性等に大きな影響を与える。従って、粒径のばらつ
きが少なく、かつ、制御性の良い電解製練により、金粉
末を製造する。電解製練は、４６ ｇ ／ １の濃度の
Ａ ｕ Ｃｌ ＊水溶液５１および７０ｇ／ｌの濃度の
Ｋ ＊ Ｓ Ｏｓ水溶液５Ｉを温度−１０℃ないし５℃
、好ましくは２℃の条件にて素早く混合することにより
行う。この結果、下記式に示す反応が起り、５〜１０秒
後、金粉末が沈殿する。(a) Precious Metal Powder The particle size of the gold powder has a large effect on the moldability of the alloyed gold clay, its crackability during drying, and the like. Therefore, gold powder is produced by electrolytic smelting with little variation in particle size and good controllability. Electrolytic smelting was carried out by preparing an A u Cl * aqueous solution 51 with a concentration of 46 g/l and a K * S Os aqueous solution 5 I with a concentration of 70 g/l at a temperature of -10°C to 5°C.
, preferably by rapid mixing at 2°C. As a result, the reaction shown in the following formula occurs, and after 5 to 10 seconds, gold powder is precipitated.
２ Ａ ｕ Ｃｌ ＊ ＋ ３ Ｋ ｔ Ｓ Ｏ＊
＋ ３ Ｈ２０→２ Ａ ｕ ＋ ３ Ｋ ＊ Ｓ Ｏ
４＋ ６ ＨＣ１この沈殿物を濾過することにより金粉
が得られる。2 A u Cl * + 3 K t S O *
+ 3 H20→2 A u + 3 K * S O
4+ 6 HC1 Gold powder is obtained by filtering this precipitate.
なお、水溶液の温度が一１０℃以下であれば反応が遅く
なり、５℃以上であれば粒径が小となるとともに金粉か
凝集するという不具合が発生する。Note that if the temperature of the aqueous solution is below 110°C, the reaction will be slow, and if it is above 5°C, the particle size will become small and the gold powder will coagulate.
以上の条件による電解製練により、粒径が１０〜１００
μｍ程度であり、かつ、直径０，１〜１μｍ程度のこぶ
の付着した金粉末が得られる。By electrolytic smelting under the above conditions, the particle size is 10 to 100.
Gold powder having a diameter of approximately 0.1 to 1 μm is obtained.
さらに所望の特性を有する合金金粘土を得るために、合
金金粘土に含有させる貴金属粉末として、以下のものを
ガスアトマイズ法によって製造する。Furthermore, in order to obtain a gold alloy clay having desired properties, the following noble metal powders to be included in the gold alloy clay are manufactured by a gas atomization method.
［Ａ ｇあるいはＣｕを含んだ合金の粉末］これらの貴
金属の含有率を変えることにより、合金金粘土の硬さ、
強度、色調等を調整することができる。色調の調整につ
いて説明すると、Ａｇは白色を強調するのに有効であり
、Ｃｕは赤色を強調するのに有効である。[Alloy powder containing Ag or Cu] By changing the content of these precious metals, the hardness of the alloy gold clay can be changed.
Intensity, color tone, etc. can be adjusted. Regarding color tone adjustment, Ag is effective for emphasizing white, and Cu is effective for emphasizing red.
［Ｎ ｉあるいはＰｄを含んだ合金の粉末１これらの貴
金属は特に白色を強調する場合に有効である。[Alloy Powder Containing Ni or Pd 1 These noble metals are particularly effective in emphasizing white color.
（Ｚｎ、Ｃｏ、Ｂｅ、ＳｎあるいはＩｎの合金を含んだ
粉末）
Ｚｎは色調の調整に有効である。また、Ｃｏ。(Powder containing an alloy of Zn, Co, Be, Sn or In) Zn is effective for adjusting color tone. Also, Co.
Ｂｅ、Ｓｎ、Ｉｎ等は合金金粘土の強度を向上させるの
に有効である。なお、以上のものは、合金の状態で製造
する他、各貴金属の粉末を独立して製造し、製造後に混
合してもよい。Be, Sn, In, etc. are effective in improving the strength of alloyed gold clay. In addition to manufacturing the above materials in the form of an alloy, powders of each noble metal may be manufactured independently and mixed after manufacturing.
以上のようにして得られる金粉末およびその他の合金粉
末を、７５％：２５％の割合で混合し、粘土に含有させ
るべき貴金属粉末を得る。The gold powder and other alloy powder obtained as described above are mixed at a ratio of 75%:25% to obtain a noble metal powder to be included in the clay.
合金金粘土における貴金属粉末の含有量は、５０〜９０
重量％とした。貴金属粉末は合金金粘土の色調、硬さ等
の特性を左右する重要な要素であるが、貴金属粉末の含
有量が５０重量％未満ではその効果がなく、一方、９０
重量％以上を越えて含有すると、得られた合金金粘土の
伸びおよび強度が低下するようになるので好ましくない
。従って、上記の通りの含有量とした。The content of precious metal powder in alloy gold clay is 50-90
It was expressed as weight%. Precious metal powder is an important element that affects the color tone, hardness, and other properties of alloyed gold clay, but if the content of precious metal powder is less than 50% by weight, it has no effect;
If the content exceeds more than % by weight, the elongation and strength of the obtained alloyed gold clay will decrease, which is not preferable. Therefore, the content was set as above.
また、貴金属粉末の平均粒径は、２００μｍを越えると
貴金属合金金粘土の伸びおよび強度が低下することから
２００μｍ以下とすることが好ましい。特に金粉末につ
いては、上述のように合金金粘土の特性を大きく左右す
るので、電解製練によって得られる平均粒径１０μｍ程
度のこぶ付きのものを使用する。Further, the average particle size of the noble metal powder is preferably 200 μm or less, since if it exceeds 200 μm, the elongation and strength of the noble metal alloy gold clay will decrease. In particular, as for the gold powder, since it greatly influences the properties of the alloyed gold clay as described above, a knobbed powder with an average particle diameter of about 10 μm obtained by electrolytic smelting is used.
（ｂ）セルローズ系水溶性バインダー
セルローズ系水溶性バインダーは、加熱すると速やかに
ゲル化して固化し、造形物の形状の保持を容易にする。(b) Cellulose-based water-soluble binder The cellulose-based water-soluble binder quickly gels and solidifies when heated, making it easier to maintain the shape of the shaped object.
しかし、その添加量が０８重量％未満ではその効果が得
られず、一方、８重量％より多く添加すると粘性度が大
きくなり過ぎて造形することができなくなってしまう。However, if the amount added is less than 0.8% by weight, the effect cannot be obtained, while if it is added in an amount greater than 8% by weight, the viscosity becomes too high, making it impossible to shape.
従って、上記の通り、セルローズ系水溶性バインダーの
含有量は、０８〜８重量％とした。セルローズ系水溶性
バインダーとしては、メチルセルローズ、エチルセルロ
ーズ等が好ましい。Therefore, as mentioned above, the content of the cellulose-based water-soluble binder was set to 0.8 to 8% by weight. As the cellulose-based water-soluble binder, methylcellulose, ethylcellulose, etc. are preferable.
（ｃ）界面活性剤
界面活性剤を添加して混合することにより、バインダー
と水との反応により生じた固形物が粉砕され、また、貴
金属粉末とバインダーとの混合性が良くなるという作用
が得られる。しかし、添加する界面活性剤の量が０．０
３重量％未満ではその効果が充分でなく、一方、界面活
性剤を３重量％よりも多く添加すると、合金金粘土の粘
性度が低下し、流動性が増して造形することができなく
なるので好ましくない。従って、上記の通り、界面活性
剤の添加量は００３〜３重量％とした。(c) Surfactant Adding and mixing a surfactant has the effect of pulverizing the solid matter produced by the reaction between the binder and water, and improving the miscibility of the noble metal powder and the binder. It will be done. However, the amount of surfactant added is 0.0
If the surfactant is less than 3% by weight, the effect will not be sufficient, whereas if the surfactant is added in an amount greater than 3% by weight, the viscosity of the gold alloy clay will decrease and the fluidity will increase, making it impossible to shape, so it is preferable. do not have. Therefore, as mentioned above, the amount of surfactant added was 0.03 to 3% by weight.
（ｄ）油脂
油脂を少量添加することにより、造形時、貴金属合金金
粘土が手に付着しないようにすることができる。しかし
、その添加量が０．１重量％未満ではその効果が得られ
ず、一方、３重量％より多く添加すると、合金金粘土が
油っぽくなり、滑りやすくなって、造形時の作業性が悪
くなるので好ましくない。従って、上記の通り、油脂の
含有量は０．１〜３重量％とした。油脂としては、高級
有機酸、例えば、フタル酸、
高級有機酸エステル、例えば、フタル酸−ｎ −ジオク
チル、フタル酸−ｎ−ジブチル、高級アルコール、
高級多価アルコール、例えば、ポリビニルアルコール、
ポリエチレングリコール、エーテル類、等である。(d) Oil and fat By adding a small amount of oil and fat, it is possible to prevent precious metal alloy gold clay from adhering to hands during modeling. However, if the amount added is less than 0.1% by weight, the effect cannot be obtained, while if it is added more than 3% by weight, the alloy gold clay becomes oily and slippery, reducing workability during modeling. I don't like it because it makes it worse. Therefore, as mentioned above, the content of oil and fat was set to 0.1 to 3% by weight. Examples of fats and oils include higher organic acids such as phthalic acid, higher organic acid esters such as n-dioctyl phthalate, n-dibutyl phthalate, higher alcohols, higher polyhydric alcohols such as polyvinyl alcohol,
Polyethylene glycol, ethers, etc.
以上の材料を準備した後、以下説明するようにして合金
金粘土を製造する。すなわち、セルローズ系水溶性バイ
ンダーと水とを混合し、暫く放置して寒天状物質とする
。次いで、この寒天状物質に界面活性剤を添加して混合
し、さらに上記貴金属粉末を添加して混合する。そして
、この貴金属粉末混合体に油脂を添加して混合すること
により、第１図に示すように、金の粒１およびその他の
貴金属合金の粒２がその他の材料と混ざり合った状態の
合金金粘土が得られる。After preparing the above materials, alloyed gold clay is manufactured as described below. That is, a cellulose-based water-soluble binder and water are mixed and left to stand for a while to form an agar-like substance. Next, a surfactant is added to this agar-like material and mixed, and the above-mentioned noble metal powder is further added and mixed. By adding oil and fat to this precious metal powder mixture and mixing it, as shown in FIG. Clay is obtained.
「発明の効果」
以上説明したように本発明によれ、ば、金粉の一粒体の
表面に凹凸が形成されるから、この金粉にバインダ等を
混合することによってきわめて良質な粘土を製造するこ
とができる。"Effects of the Invention" As explained above, according to the present invention, since irregularities are formed on the surface of a single particle of gold powder, extremely high quality clay can be produced by mixing a binder etc. with this gold powder. I can do it.
第１図はこの発明の一実施例による製造方法によって製
造された合金金粘土の状態を示す図である。
１−一金の粒、２−一他の貴金属合金の粒。FIG. 1 is a diagram showing the state of alloyed gold clay produced by a production method according to an embodiment of the present invention. 1 - grains of gold, 2 - grains of other precious metal alloys.
Claims (2)
た小径粒とから構成されることを特徴とする金粉。(1) A gold powder characterized in that one particle is composed of large-diameter particles and small-diameter particles attached to the surface of the large-diameter particles.
温度−１０℃ないし５℃に設定し、両者を混合すること
によって金粉を得ることを特徴とする金粉の製造方法。(2) A method for producing gold powder, which comprises obtaining gold powder by mixing an AuCl_3 aqueous solution and a K_2SO_3 aqueous solution at a temperature of -10°C to 5°C.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2270938A JP2836232B2 (en) | 1990-10-09 | 1990-10-09 | Alloy gold clay |
| AU77097/91A AU638832B2 (en) | 1990-05-18 | 1991-05-15 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| DE69113859T DE69113859T2 (en) | 1990-05-18 | 1991-05-17 | Precious metal moldings, process for their preparation, moldable mixture for their preparation and method for producing this moldable mixture. |
| EP91108050A EP0457350B1 (en) | 1990-05-18 | 1991-05-17 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| CA002042845A CA2042845C (en) | 1990-05-18 | 1991-05-17 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
| AT91108050T ATE129130T1 (en) | 1990-05-18 | 1991-05-17 | PRECIOUS METAL MOLDED BODY, METHOD FOR THE PRODUCTION THEREOF, MOLDABLE MIXTURE FOR THE PRODUCTION THEREOF AND METHOD FOR PRODUCING THIS MOLDABLE MIXTURE. |
| KR1019910008117A KR0179371B1 (en) | 1990-05-18 | 1991-05-18 | Precious metal products, methods for producing precious metals, molded mixtures used for the production of precious metals, and methods for producing molded mixtures |
| US07/978,507 US5328775A (en) | 1990-05-18 | 1992-11-18 | Moldable mixture for use in the manufacturing of precious metal articles |
| US08/231,101 US5376328A (en) | 1990-05-18 | 1994-04-22 | Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2270938A JP2836232B2 (en) | 1990-10-09 | 1990-10-09 | Alloy gold clay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04147902A true JPH04147902A (en) | 1992-05-21 |
| JP2836232B2 JP2836232B2 (en) | 1998-12-14 |
Family
ID=17493096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2270938A Expired - Lifetime JP2836232B2 (en) | 1990-05-18 | 1990-10-09 | Alloy gold clay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2836232B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081149B2 (en) | 2001-09-28 | 2006-07-25 | Mitsubishi Materials Corporation | Silver powder for silver clay and silver clay containing this silver powder |
| WO2010066529A1 (en) * | 2008-12-11 | 2010-06-17 | H.C. Starck Gmbh | Pre-product for the production of sintered metallic components, a method for producing the pre-product and the production of components |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4855119A (en) * | 1971-11-08 | 1973-08-02 | ||
| JPS61204906A (en) * | 1985-03-08 | 1986-09-11 | Fujitsu Ltd | Manufacture of sintered magnetic substance |
| JPS63241101A (en) * | 1987-03-27 | 1988-10-06 | Sumitomo Metal Ind Ltd | Production of metal powder for powder metallurgy |
| JPH02225678A (en) * | 1989-02-23 | 1990-09-07 | Toyota Motor Corp | Powder for laser beam treatment |
-
1990
- 1990-10-09 JP JP2270938A patent/JP2836232B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4855119A (en) * | 1971-11-08 | 1973-08-02 | ||
| JPS61204906A (en) * | 1985-03-08 | 1986-09-11 | Fujitsu Ltd | Manufacture of sintered magnetic substance |
| JPS63241101A (en) * | 1987-03-27 | 1988-10-06 | Sumitomo Metal Ind Ltd | Production of metal powder for powder metallurgy |
| JPH02225678A (en) * | 1989-02-23 | 1990-09-07 | Toyota Motor Corp | Powder for laser beam treatment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081149B2 (en) | 2001-09-28 | 2006-07-25 | Mitsubishi Materials Corporation | Silver powder for silver clay and silver clay containing this silver powder |
| EP1442811A4 (en) * | 2001-09-28 | 2007-01-10 | Mitsubishi Materials Corp | Silver powder for silver clay and silver clay comprising the silver powder |
| WO2010066529A1 (en) * | 2008-12-11 | 2010-06-17 | H.C. Starck Gmbh | Pre-product for the production of sintered metallic components, a method for producing the pre-product and the production of components |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2836232B2 (en) | 1998-12-14 |
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