JP3267055B2 - Pure Au powder excellent gold clay production sinterability - Google Patents

Pure Au powder excellent gold clay production sinterability

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Publication number
JP3267055B2
JP3267055B2 JP14111694A JP14111694A JP3267055B2 JP 3267055 B2 JP3267055 B2 JP 3267055B2 JP 14111694 A JP14111694 A JP 14111694A JP 14111694 A JP14111694 A JP 14111694A JP 3267055 B2 JP3267055 B2 JP 3267055B2
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Prior art keywords
pure
au powder
gold
sinterability
pure au
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JP14111694A
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Japanese (ja)
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JPH07331303A (en )
Inventor
寿一 平澤
利昇 石井
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三菱マテリアル株式会社
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【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】この発明は、純金粘土に混合するための焼結性に優れた純Au粉末に関するものである。 BACKGROUND OF THE INVENTION This invention relates to pure Au powder having excellent sinterability for mixing pure gold clay.

【0002】 [0002]

【従来の技術】高純度Au粉末を含有した可塑性組成物(以下、純金粘土という)を所定の形状に成形し、この成形体と焼成して純金美術工芸品、装飾品等の造形物(以下、純金造形物という)を製造する方法は知られており、上記純金粘土は、高純度Au粉末:50〜90重量%、セルローズ系水溶性バインダー:0.8〜8重量%、界面活性剤:0.03〜3重量%、油脂:0.1〜 BACKGROUND ART High purity Au powder thermoplastic composition containing (hereinafter, referred to as pure gold clay) was formed into a predetermined shape, pure gold arts and crafts and firing the shaped body, the shaped product of ornaments (hereinafter a method of manufacturing a) of pure gold modeled object are known, the pure gold clay, high purity Au powder: 50 to 90 wt%, cellulose-based water-soluble binder: 0.8 to 8 wt%, surfactant: 0.03 to 3% by weight, fat: 0.1
3重量%を含有し、残りが水および不可避不純物からなる組成を有することも知られている(特開平4−267 3 contains% by weight, the remainder is also known to have a composition comprising water and inevitable impurities (Japanese Patent 4-267
07号公報参照)。 See 07 JP).

【0003】 [0003]

【発明が解決しようとする課題】しかし、通常の高純度Au粉末を含む純金粘土が焼き上るには長時間を要し、 [0008] However, the rise baked is pure gold clay containing high purity Au powder usually takes a long time,
得られた純金造形物の強度、伸び、硬さなどが不足するために複雑で薄肉形状を有する純金造形物を作製することができず、上記焼結時間の短縮のために純金粘土に添加する高純度Au粉末の粒径を微細化することも行なわれていたが、高純度Au粉末の粒度を微細化しすぎると焼結時間は短縮するが純金粘土の成形性が低下して好ましくないなどの課題があった。 Strength of the resulting pure gold molded object, stretch, not possible to prepare a gold shaped object having a complex thin shape for lack of such hardness, added to the gold clay to shorten the sintering time Although also it has been performed to refine the grain size of the high purity Au powder, such as sintering time and too fine a particle size of high-purity Au powder shortens but unfavorably decreases the moldability of pure gold clay there is a problem.

【0004】 [0004]

【課題を解決するための手段】そこで、本発明者等は、 Means for Solving the Problems] The present inventors have
通常の粒度のAu粉末であっても、従来より短時間で焼成することができ、かつ焼成して得られた純金造形物の強度が優れている純金粘土を得るべく研究を行った。 Even Au powder of normal particle size, conventionally can be fired in a short time, and the strength of pure gold shaped object obtained by firing is to research obtaining superior gold clay. その結果、純金粘土に含まれる純Au粉末として、Ag: As a result, as a pure Au powder contained in pure gold clay, Ag:
50〜1000ppm を含み純度:99.9%以上の純A Purity includes 50~1000ppm: 99.9% or more of net A
u粉末を用いると、純Au粉末の粒径を極端に微細化しなくても焼結性が向上し、所定の強度を有する純金造形物が得られるという研究結果が得られたのである。 With u powder, without extremely fine the grain size of pure Au powder improves sinterability is the finding that gold shaped object having a predetermined strength can be obtained is obtained.

【0005】この発明は、かかる研究結果に基づいてなされたものであって、99.9重量%以上の純度を有し、Agを50〜1000ppm 含む焼結性に優れた純金粘土製造用純Au粉末に特徴を有するものである。 [0005] The present invention was made on the basis of the research results, a purity of more than 99.9 wt%, net for good gold clay manufactured sinterability including 50~1000ppm an Ag Au powder is one having a characteristic in.

【0006】Agの含有量を50〜1000ppm に限定したのは、50ppm 未満では強度および伸びが十分でないために形状の複雑化や薄肉化に対応できず、一方、1 [0006] The reason for limiting the content of Ag in 50~1000ppm, in less than 50ppm can not correspond to the complicated and thinner shape for strength and elongation is not sufficient, whereas, 1
000ppm を越えて含有すると品位が低くなり、純Au Quality is lowered when the content exceeds the 000 ppm, pure Au
粉末と言えなくなるばかりでなく、逆に純金造形物の伸びが小さくなると共に完全に焼き上げるまでの時間が長くなる理由によるものである。 Powder and not only no longer speaking, the time to fully baked with elongation of gold shaped article becomes small conversely is due reason longer. この発明の焼結性に優れた純Au粉末に含まれるAg含有量の一層好ましい範囲は100〜500ppm である。 A more preferred range of Ag content in the pure Au powder having excellent sinterability of the present invention is 100 to 500 ppm.

【0007】 [0007]

【実施例】塩化金酸(HAuCl 4 )水溶液にAg濃度の異なる塩酸溶液を添加し、pH調整したのち過剰の亜硫酸カリウムを用いて還元し、いずれもメジアン径が1 EXAMPLES added different hydrochloric acid solution of Ag concentration in the aqueous solution of chloroauric acid (HAuCl 4), is reduced with an excess of potassium sulfite After pH adjustment, both median diameter 1
0μmである表1に示される量のAgを含有した本発明純Au粉末1〜11、比較純Au粉末1〜3および従来純Au粉末を得た。 The present invention pure Au powder 1 to 11 containing Ag in an amount shown in Table 1 is 0 .mu.m, to obtain comparative pure Au powder 1-3 and a conventional pure Au powder. これら純Au粉末を洗浄したのち、 After washing these pure Au powder,
これら純Au粉末:80重量%に対して、エチルセルローズ:2.0重量%、界面活性剤:0.4重量%、フタル酸−n−ジブチル:0.7重量%、残り:水となるように配合し混練し、純金粘土を作製した。 These pure Au powders: For 80 wt%, ethyl cellulose: 2.0 wt%, surfactant: 0.4% by weight, phthalate -n- dibutyl: 0.7 wt%, the rest: such as the water blended and kneaded, to prepare a pure gold clay. この純金粘土を用いて、縦:3mm、横:3mm、長さ:100mmの棒状成形体を作製し、これら棒状成形体を電気炉に装入し、 Using this pure gold clay, vertical: 3 mm, lateral: 3 mm, length: to prepare a rod-like formed body of 100 mm, was charged with these rod-shaped bodies in an electric furnace,
1000℃、2時間保持して純金焼結体サンプルを作製した。 1000 ° C., to produce a pure gold sintered sample was held for 2 hours. これら純金焼結体サンプルに対し、引張り試験を施し、その破断強度および破断伸びを測定し、その測定結果を表1に示した。 For these pure gold sintered samples, subjected to a tensile test to measure the breaking strength and breaking elongation The measurement results are shown in Table 1.

【0008】また、これとは別に、上記棒状成形体を1 [0008] Separately, the rod shaped molded body 1
000℃にて焼結し、焼結体がそれ以上焼き縮まらない状態(以下、完全焼結状態という)に至るまでの焼結時間を測定し、それらの測定結果も表1に示して焼結性を評価した。 Sintered at 000 ° C., a state in which the sintered body is not Chijimara baked more (hereinafter, entirely referred to sintering conditions) to measure the sintering time up to the sintering also shown in Table 1 the measurement results It was evaluated sex.

【0009】 [0009]

【表1】 [Table 1]

【0010】 [0010]

【発明の効果】表1に示される結果から、本発明純Au From the results shown in Table 1 according to the present invention, the present invention pure Au
粉末1〜11を含む純金粘土を用いて作製した純金焼結体サンプルは、従来純Au粉末を含む純金粘土を用いて作製した純金焼結体サンプルに比べて破断強度および破断伸びに優れ、さらに粉末の粒度が同じであっても本発明純粉末1〜11を含む純金粘土で作製した成形体が完全焼結状態になるまでの時間が短く、焼結性に優れていることがわかる。 Gold sintered samples prepared by using a gold clay containing powder 1-11 is excellent in breaking strength and breaking elongation than the pure gold sintered samples prepared by using a gold clay containing conventional pure Au powder, further short time to be a particle size of the powder is the same to prepare pure gold clay containing the present invention pure powder 1-11 molded body is completely sintered state, it is excellent in sintering property.

【0011】しかし、Ag含有量が1000ppm を越えて含有する比較純Au粉末2〜3を含む純金粘土を用いて作製した金焼結体サンプルは破断伸びが低下するので好ましくないこともわかる。 [0011] However, gold sintered samples prepared by using a gold clay comprising comparing pure Au powder 2-3 of Ag content is content exceeds 1000ppm is understood not preferable because elongation at break is lowered.

【0012】上述のように、この発明の純Au粉末を用いると、従来よりも優れた純金粘土を提供することができる。 [0012] As described above, the use of pure Au powder of the present invention, it is possible to provide an excellent gold clay than before.

Claims (1)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 99.9重量%以上の純度を有し、Ag 1. A has a 99.9 wt% pure, Ag
    を50〜1000ppm 含むことを特徴とする焼結性に優れた純金粘土製造用純Au粉末。 Sintering excellent in pure gold clay producing pure Au powder which comprises 50~1000ppm a.
JP14111694A 1994-05-31 1994-05-31 Pure Au powder excellent gold clay production sinterability Expired - Lifetime JP3267055B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14111694A JP3267055B2 (en) 1994-05-31 1994-05-31 Pure Au powder excellent gold clay production sinterability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14111694A JP3267055B2 (en) 1994-05-31 1994-05-31 Pure Au powder excellent gold clay production sinterability

Publications (2)

Publication Number Publication Date
JPH07331303A true JPH07331303A (en) 1995-12-19
JP3267055B2 true JP3267055B2 (en) 2002-03-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9301845B2 (en) 2005-06-15 2016-04-05 P Tech, Llc Implant for knee replacement
US9592127B2 (en) 2005-12-15 2017-03-14 Zimmer, Inc. Distal femoral knee prostheses
US9867708B2 (en) 2010-09-10 2018-01-16 Zimmer Gmbh Femoral prosthesis with lateralized patellar groove

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9301845B2 (en) 2005-06-15 2016-04-05 P Tech, Llc Implant for knee replacement
US9750612B2 (en) 2005-06-15 2017-09-05 P Tech, Llc Methods and systems for providing gender specific pharmaceuticals
US9592127B2 (en) 2005-12-15 2017-03-14 Zimmer, Inc. Distal femoral knee prostheses
US9867708B2 (en) 2010-09-10 2018-01-16 Zimmer Gmbh Femoral prosthesis with lateralized patellar groove

Also Published As

Publication number Publication date Type
JPH07331303A (en) 1995-12-19 application

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