JP2001335806A - Clay composition and method for producing molding consisting of metal or ceramics using the composition - Google Patents
Clay composition and method for producing molding consisting of metal or ceramics using the compositionInfo
- Publication number
- JP2001335806A JP2001335806A JP2000151073A JP2000151073A JP2001335806A JP 2001335806 A JP2001335806 A JP 2001335806A JP 2000151073 A JP2000151073 A JP 2000151073A JP 2000151073 A JP2000151073 A JP 2000151073A JP 2001335806 A JP2001335806 A JP 2001335806A
- Authority
- JP
- Japan
- Prior art keywords
- clay composition
- composition
- metal
- powder
- ceramic
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 239000004927 clay Substances 0.000 title claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000000465 moulding Methods 0.000 title abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 43
- 239000007864 aqueous solution Substances 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 229910021538 borax Inorganic materials 0.000 claims abstract description 12
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 12
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 12
- 238000005452 bending Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 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
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する分野】本発明は、宝飾品、美術工芸品、
装飾品などの造形物を作製するための素材として有効な
粘土組成物、及び該粘土組成物を用いた金属又はセラミ
ックスからなる造形品の製造方法に関する。The present invention relates to jewelry, arts and crafts,
The present invention relates to a clay composition effective as a material for producing a shaped article such as a decorative article, and a method for producing a shaped article made of metal or ceramics using the clay composition.
【０００２】[0002]
【従来の技術】近年、宝飾品、美術工芸品、装飾品など
の金属造形物の作製法として、誰もが簡単に加工・焼成
できるといった利便性から従来のような金属溶解鋳造法
でなく、金属粘土組成物を加工成形しこれを焼成する方
法が人気を集めている。2. Description of the Related Art In recent years, as a method of manufacturing metal objects such as jewelry, arts and crafts, and ornaments, the conventional method of melting and casting a metal has been adopted because of the convenience that anyone can easily process and fire. A method of processing and molding a metal clay composition and firing it is gaining popularity.
【０００３】このような金属粘土組成物は、一般に、貴
金属粉末と有機系バインダ−樹脂を基本成分としてこれ
に界面活性剤や油脂等の添加剤を加えたものから構成さ
れている。その具体例としては、例えば、「有機系バイ
ンダー樹脂として、特定割合の澱粉と水溶性セルロース
系樹脂（メチルセルロース）を使用するもの」（特開平
８−２６９５０３号公報、特開平９−２２７９０４号公
報、特開平１０−２１５５０６号公報）、「有機系バイ
ンダー樹脂として、セルロース系水溶性バインダー樹脂
（エチルセルロース）を用いると共に貴金属粉末として
特定粒径のものを用いたもの」が知られている。[0003] Such a metal clay composition is generally composed of a precious metal powder and an organic binder resin as basic components, to which additives such as a surfactant and oils and fats are added. Specific examples thereof include, for example, those using a specific ratio of starch and a water-soluble cellulose resin (methylcellulose) as an organic binder resin (JP-A-8-269503, JP-A-9-227904, Japanese Patent Application Laid-Open No. H10-215506), "What uses a cellulose-based water-soluble binder resin (ethylcellulose) as the organic binder resin and uses a noble metal powder having a specific particle size".
【０００４】しかし、前者の粘土組成物は、粘ちょうが
不十分であり脆いため、細く引き延ばしたり、曲げたり
するなどの細かな成形が行い難く、意匠性の高い造形品
や小ロット品の生産には不向きであり、一方後者のもの
は、適切な変形特性の粘度としようとする場合、粘土に
対する金属粉末の分量が相対的に低くなり、焼結時の収
縮が大きくなってしまう等といった問題点があった。However, the former clay composition has insufficient viscosity and is brittle, so that it is difficult to perform fine molding such as stretching or bending finely, and it is difficult to produce a shaped product or a small lot product having high design properties. On the other hand, the latter is problematic in that the amount of metal powder relative to clay becomes relatively low and the shrinkage during sintering becomes large when trying to obtain a viscosity with appropriate deformation characteristics. There was a point.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、充分な粘ち
ょうを示し、細く引き延ばしたり、曲げたりするなどの
細かな成形性に優ればかりでなく、焼結時の加工成形体
の収縮率が相対的に小さく、意匠性の高い造形品や小ロ
ット品を有利に作製できる粘土組成物及びこのものを利
用した金属又はセラミックスからなる造形品の有利な製
造方法を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention not only shows sufficient viscosity and excellent fine formability such as being elongated or bent, but also has a reduced shrinkage rate of a formed product during sintering. It is an object of the present invention to provide a clay composition that can be advantageously used to produce a relatively small shaped article or small lot article having a high design property, and an advantageous method for producing a shaped article made of metal or ceramics using the clay composition.
【０００６】[0006]
【課題を解決するための手段】本発明者は鋭意検討した
結果、金属粉末又はセラミックス粉末にポリビニルアル
コール水溶液を混合したスラリーに硼砂を添加した組成
物が上記課題に対して有効であることを見い出し本発明
を完成するに至ったをすなわち、本発明によれば、第一
に、（１）ポリビルニアルコール水溶液、（２）金属粉
末又はセラミックス粉末、及び（３）硼砂、からなる粘
土組成物が提供される。第二に、（１）ポリビルニアル
コール水溶液、（２）金属粉末又はセラミックス粉末、
及び（３）硼砂、からなる粘土組成物を所望の形状に造
形し、ついで乾燥・焼結させることを特徴とする金属又
はセラミックスからなる造形品の製造方法が提供され
る。As a result of diligent studies, the present inventors have found that a composition obtained by adding borax to a slurry obtained by mixing a polyvinyl alcohol aqueous solution with a metal powder or ceramic powder is effective against the above-mentioned problems. The present invention has been completed. That is, according to the present invention, first, a clay composition comprising (1) an aqueous solution of polyvirni alcohol, (2) a metal powder or a ceramic powder, and (3) borax. Is provided. Secondly, (1) aqueous solution of polyvirni alcohol, (2) metal powder or ceramic powder,
And (3) a method for producing a shaped article made of metal or ceramics, which comprises forming a clay composition comprising borax into a desired shape, followed by drying and sintering.
【０００７】[0007]
【発明の実施の形態】以下、本発明を更に詳細に説明す
る。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.
【０００８】（１）ポリビニルアルコールとしては、従
来公知のものが何れも使用できるが、分子量５０００〜
５０００００で、鹸化度９０％以上のもの使用が望まし
い。また、その水溶液濃度は０．５〜３０wt％好ましく
は１〜２０wt％としておくのが適当である。水溶液濃度
が３０wt％を超えると粘度が高くなりすぎ、また０．５
％未満であると十分な粘度が得られないので好ましくな
い。水溶液の粘度は、濃度と使用するポリビニルアルコ
ールの重合度の関係で変化するので、これらを適宜調製
しておくことが望ましい。(1) As polyvinyl alcohol, any of those conventionally known can be used, but the molecular weight is 5,000 to 5,000.
It is desirable to use those having a saponification degree of at least 500000 and a saponification degree of 90% or more. The concentration of the aqueous solution is suitably 0.5 to 30% by weight, preferably 1 to 20% by weight. If the concentration of the aqueous solution exceeds 30% by weight, the viscosity becomes too high.
% Is not preferred because sufficient viscosity cannot be obtained. Since the viscosity of the aqueous solution changes depending on the relationship between the concentration and the degree of polymerization of the polyvinyl alcohol used, it is desirable to appropriately prepare these.
【０００９】（２）の金属粉末としては、金、白金、パ
ラジウム、銀等の貴金属粉末やそれらの合金粉末、超硬
合金粉末、ステンレス鋼、ニッケル基合金鋼、工具鋼、
高速度鋼粉末の他、水と接触させても急激に変化しない
金属粉末等が挙げられる。また、（２）のセラミックス
粉末として、アルミナ、ジルコニア、ＰＺＴなどのセラ
ミックス粉末が挙げられる。金属粉末およびセラミック
ス粉末の粒径に特別な制限はなく、平均粒径が２００μ
ｍからサブミクロン、好ましくは５０μｍ程度の粉末が
使用される。As the metal powder (2), noble metal powders such as gold, platinum, palladium and silver, alloy powders thereof, cemented carbide powders, stainless steel, nickel base alloy steel, tool steel,
In addition to high-speed steel powder, metal powder that does not change rapidly even when it is brought into contact with water, and the like are listed. Examples of the ceramic powder (2) include ceramic powders such as alumina, zirconia, and PZT. There is no special restriction on the particle size of the metal powder and ceramic powder, and the average particle size is 200μ.
Powders of m to submicron, preferably of the order of 50 μm are used.
【００１０】（１）のポリビニルアルコールと（２）の
金属粉末又はセラミックス粉末との使用割合に特別な制
約はないが、容量比で（１）のポリビニルアルコール溶
液：（２）の金属粉末又はセラミックス粉末＝１：５〜
４：１好ましくは１：３〜３：１である。There is no particular restriction on the ratio of the polyvinyl alcohol (1) and the metal powder or ceramic powder (2), but the volume ratio of the polyvinyl alcohol solution (1): the metal powder or ceramic (2) Powder = 1: 5-
The ratio is 4: 1, preferably 1: 3 to 3: 1.
【００１１】（３）の硼砂は、上記（１）のポリビニル
アルコールと（２）の金属粉末又はセラミックス粉末と
の粘土組成物に適切な粘ちょう性を与え、細く引き延ば
したり、曲げたりするなどの細かな加工成形性を高める
と共に焼結時の加工成形体の収縮率を相対的に小さく
し、意匠性の高い造形品や小ロット品の有利な生産性を
付与するために使用される。その使用量は上記作用・機
能が発現されるように適宜設定すればよいが、通常、
（１）のポリビニルアルコールと（２）の金属粉末又は
セラミックス粉末のスラリー１００重量部に対して、
０．００２〜０．１重量部好ましくは０．０１〜０．０
２重量部とするのがよい。The borax (3) imparts appropriate viscosity to the clay composition of the polyvinyl alcohol (1) and the metal powder or the ceramic powder (2), and is suitable for stretching or bending. It is used to increase the fine workability and to relatively reduce the shrinkage of the work-formed body during sintering, and to provide advantageous productivity of shaped products and small-lot products with high design properties. The amount of use may be appropriately set so that the above-described actions and functions are exhibited.
For 100 parts by weight of a slurry of the polyvinyl alcohol of (1) and the metal powder or ceramic powder of (2),
0.002 to 0.1 part by weight, preferably 0.01 to 0.0
It is preferable to use 2 parts by weight.
【００１２】本発明の粘土組成物は上記（１）乃至
（３）の成分を必須とするものであるが、必要に応じて
この種の粘土組成物に添加される慣用成分例えば界面活
性剤、可塑剤、油脂等を含有することもできる。The clay composition of the present invention essentially comprises the above components (1) to (3). If necessary, conventional components added to this type of clay composition, such as a surfactant, Plasticizers, fats and oils and the like can be contained.
【００１３】本発明の粘土組成物を作製するには、例え
ば所定量の（１）のポリビニルアルコール水溶液と
（２）の金属粉末又はセラミックス粉末との混合物を混
練・脱泡し、スラリー（泥状）化し、つぎに、適宜量の
（３）の硼砂を添加し、必要に応じて、他の慣用成分を
添加すればよい。In order to prepare the clay composition of the present invention, for example, a mixture of a predetermined amount of an aqueous solution of polyvinyl alcohol (1) and a metal powder or ceramic powder of (2) is kneaded and defoamed to obtain a slurry (mud-like). ), And then an appropriate amount of borax (3) is added, and if necessary, other conventional components may be added.
【００１４】本発明の粘土組成物は、適切な粘ちょう性
を示し、細く引き延ばしたり、曲げたりするなどの細か
な加工成形性に優れたものであり、また焼結時の加工成
形体の収縮率を相対的に小さくすることができるもので
ある。従って、このものを成形した後或いは成形しなが
ら乾燥させていくことにより、通常の厚みの成形体はも
ちろんのこと薄いもの更には細い成形体のよいな細かな
加工性を必要とする、意匠性の高い造形品や小ロット品
を簡単に任意の形状に成形することができ、そのまま使
用材料に応じた温度条件、雰囲気下で焼結させることに
より、成形体の形状と相似に収縮した、所望の造形品を
得ることができる。また、特に、本発明に係る上記粘土
組成物により作製された、その形状が薄い成形体或いは
細い成形体は、これを乾燥した後に若干の湿度を与える
ことによって再び塑性を取り戻すので、簡単に所望の形
状に修正することが可能となる。[0014] The clay composition of the present invention exhibits an appropriate consistency, is excellent in fine workability such as stretching or bending, and shrinkage of the worked product during sintering. The rate can be made relatively small. Therefore, by drying the molded product after or while molding it, it is necessary to have good workability of not only a molded product having a normal thickness but also a thin product and a thin molded product. High-quality molded products and small lot products can be easily formed into any desired shape, and by sintering under the temperature conditions and atmosphere according to the materials used, the product shrinks in a similar manner to the shape of the molded product. Can be obtained. Further, in particular, a thin molded article or a thin molded article produced by using the clay composition according to the present invention recovers plasticity again by applying a slight humidity after drying the molded article. It is possible to correct the shape.
【００１５】[0015]
【実施例】以下、本発明を実施例により更に詳細に説明
する。The present invention will be described in more detail with reference to the following examples.
【００１６】実施例１ 金属粉末として、平均粒径６．３μｍのＳＵＳ３０４Ｌ
ステンレス粉（太平洋金属株式会社PF10）を用いた。ポ
リビニールアルコールの10％水溶液（洗濯糊として使用
されている一般的なもの）とこのステンレス粉を体積比
１１：９で混合しスラリーとした。このスラリーに硼砂
1.2重量％水溶液を、スラリー１００ｇに対して２gの割
合で加えて混合し、ステンレス鋼造形用粘土組成物を得
た。この粘土組成物は適度な粘ちょう性を示すもべたつ
きの小さいものであった。ついで、この粘土組成物を成
形し、乾燥した後、水素雰囲気、１３５０℃の温度で２
時間焼結することによりステンレンレス鋼造形品を得
た。この造形品は５０μｍのシート状の薄い部位も正確
に形成されており、また焼結後の収縮率も小さいもので
あった。Example 1 SUS304L having an average particle diameter of 6.3 μm was used as a metal powder.
Stainless steel powder (PF10 of Taiheiyo Metal Co., Ltd.) was used. A 10% aqueous solution of polyvinyl alcohol (commonly used as laundry paste) and this stainless steel powder were mixed at a volume ratio of 11: 9 to form a slurry. Borax in this slurry
A 1.2% by weight aqueous solution was added and mixed in a ratio of 2 g to 100 g of the slurry to obtain a clay composition for forming a stainless steel. This clay composition had moderate stickiness and was less sticky. Then, after molding and drying this clay composition, a hydrogen atmosphere was applied at a temperature of 1350 ° C. for 2 hours.
By sintering for a time, a stainless steel shaped article was obtained. In this molded article, a 50 μm thin sheet-like portion was accurately formed, and the shrinkage after sintering was small.
【００１７】比較例１ 実施例１において、硼砂を除いた以外は同様にして粘土
組成物を得た。このものは粘ちょう性が極めて小さく成
形加工性に劣るものであった。また、その薄い部位を正
確に成形加工することができないため、実施例１のよう
な薄い造形品を得ることはできなかった。Comparative Example 1 A clay composition was obtained in the same manner as in Example 1 except that borax was omitted. This product had extremely low viscosity and was inferior in moldability. In addition, since the thin portion cannot be formed accurately, a thin shaped product as in Example 1 could not be obtained.
【００１８】実施例２ 金属粉として、平均粒径40μｍの銀粉（福田箔粉株式会
社Ag-E-200）を用いた。ポリビニールアルコールの10％
水溶液（洗濯糊として使用されている一般的なもの）と
この銀粉を体積比８：７で混合しスラリーとした。この
スラリーに硼砂1.2重量％水溶液を、スラリー１００ｇ
に対して２gの割合で加えて混合すし、銀造形用粘土組
成物を得た。ついで、この粘土組成物を成形し、乾燥し
た後、水素雰囲気、８５０℃の温度で２時間焼結するこ
とによりステンレンレス鋼造形品を得た。この造形品は
１００μｍの薄い部位も正確に形成されており、また焼
結後の収縮率も小さいものであった。Example 2 Silver powder (Ag-E-200, Fukuda Foil Powder Co., Ltd.) having an average particle size of 40 μm was used as the metal powder. 10% of polyvinyl alcohol
An aqueous solution (a general one used as a washing paste) and this silver powder were mixed at a volume ratio of 8: 7 to form a slurry. A 1.2% by weight aqueous solution of borax is added to this slurry, and the slurry is 100 g.
And mixed at a ratio of 2 g to give a clay composition for silver shaping. Then, the clay composition was molded and dried, and then sintered at a temperature of 850 ° C. for 2 hours in a hydrogen atmosphere to obtain a shaped stainless steel product. This molded product had a thin portion of 100 μm accurately formed, and had a small shrinkage after sintering.
【００１９】実施例３ アルミナ粉として、平均粒径0.2μｍのアルミナ粉（タ
イミクロン）を用いた。ポリビニールアルコールの10％
水溶液（洗濯糊として使用されている一般的なもの）と
このアルミナ粉を体積比１：で混合しスラリーとした。
このスラリーに硼砂1.2重量％水溶液を、スラリー１０
０ｇに対して８gの割合で加えて混合し、アルミナ造形
用粘土組成物を得た。ついで、この粘土組成物を成形
し、乾燥した後、水素雰囲気、１３００℃の温度で２時
間焼結することによりステンレンレス鋼造形品を得た。
この造形品は２０μｍの薄い部位も正確に形成されてお
り、また焼結後の収縮率も小さいものであった。Example 3 Alumina powder (Tymicron) having an average particle size of 0.2 μm was used as the alumina powder. 10% of polyvinyl alcohol
An aqueous solution (a general one used as a laundry paste) and this alumina powder were mixed at a volume ratio of 1: to form a slurry.
To this slurry was added a 1.2% by weight aqueous solution of borax,
8 g was added to and mixed with 0 g to obtain an alumina molding clay composition. Next, the clay composition was molded and dried, and then sintered at a temperature of 1300 ° C. for 2 hours in a hydrogen atmosphere to obtain a shaped stainless steel product.
This shaped article had a thin portion of 20 μm accurately formed, and had a small shrinkage after sintering.
【００２０】[0020]
【発明の効果】本発明の粘土組成物は、適切な粘ちょう
性を示し、細く引き延ばしたり、曲げたりするなどの細
かな加工成形性に優れたものであり、また焼結時の加工
成形体の収縮率を相対的に小さくすることができるもの
である。従って、このものを成形した後或いは成形しな
がら乾燥させていくことにより、通常の厚みの成形体は
もちろんのこと薄いもの更には細い成形体のような細か
な加工性を必要とする、意匠性の高い造形品や小ロット
品を簡単に任意の形状に成形することができ、そのまま
使用材料に応じた温度条件、雰囲気下で焼結させること
により、成形体の形状と相似に収縮した、所望の造形品
を得ることができる。また、特に、本発明に係る上記粘
土組成物により作製された、その形状が薄い成形体或い
は細い成形体は、これを乾燥した後に若干の湿度を与え
ることによって再び塑性を取り戻すので、簡単に所望の
形状に修正することが可能となる。Industrial Applicability The clay composition of the present invention exhibits appropriate viscous properties, is excellent in fine workability such as being elongated or bent, and has a workability during sintering. Can be relatively reduced. Therefore, after molding or drying while molding, it is necessary to have fine workability such as a thin molded article as well as a molded article having a normal thickness. High-quality molded products and small lot products can be easily formed into any desired shape, and by sintering under the temperature conditions and atmosphere according to the materials used, the product shrinks in a similar manner to the shape of the molded product. Can be obtained. Further, in particular, a thin molded article or a thin molded article produced by using the clay composition according to the present invention recovers plasticity again by applying a slight humidity after drying the molded article. It is possible to correct the shape.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 33/13 Ｃ０４Ｂ 33/13 Ｐ Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) C04B 33/13 C04B 33/13 P
Claims (2)
（２）金属粉末又はセラミックス粉末、及び（３）硼
砂、からなる粘土組成物。(1) an aqueous solution of polyvirni alcohol;
A clay composition comprising (2) a metal powder or a ceramic powder, and (3) borax.
（２）金属粉末又はセラミックス粉末、及び（３）硼
砂、からなる粘土組成物を所望の形状に造形し、ついで
乾燥・焼結させることを特徴とする金属又はセラミック
スからなる造形品の製造方法。2. An aqueous polyvirni alcohol solution,
A method for producing a shaped article made of metal or ceramics, which comprises shaping a clay composition comprising (2) metal powder or ceramic powder and (3) borax into a desired shape, followed by drying and sintering.
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|---|---|---|---|
| JP2000151073A JP3435508B2 (en) | 2000-05-23 | 2000-05-23 | Clay composition and method for producing shaped article made of metal or ceramic using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000151073A JP3435508B2 (en) | 2000-05-23 | 2000-05-23 | Clay composition and method for producing shaped article made of metal or ceramic using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001335806A true JP2001335806A (en) | 2001-12-04 |
| JP3435508B2 JP3435508B2 (en) | 2003-08-11 |
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ID=18656689
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006307295A (en) * | 2005-04-28 | 2006-11-09 | National Institute Of Advanced Industrial & Technology | Clay composition for porous metal or porous ceramic, and method for producing porous metal or porous ceramic using it |
| JP2010236042A (en) * | 2009-03-31 | 2010-10-21 | Nippon Piston Ring Co Ltd | Method of joining metal powder injection moldings, and method of producing metal composite sintered material |
-
2000
- 2000-05-23 JP JP2000151073A patent/JP3435508B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006307295A (en) * | 2005-04-28 | 2006-11-09 | National Institute Of Advanced Industrial & Technology | Clay composition for porous metal or porous ceramic, and method for producing porous metal or porous ceramic using it |
| JP4565155B2 (en) * | 2005-04-28 | 2010-10-20 | 独立行政法人産業技術総合研究所 | Clay composition for porous metal or porous ceramics, and method for producing porous metal or porous ceramics using the same |
| JP2010236042A (en) * | 2009-03-31 | 2010-10-21 | Nippon Piston Ring Co Ltd | Method of joining metal powder injection moldings, and method of producing metal composite sintered material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3435508B2 (en) | 2003-08-11 |
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