JPH0797602A - Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the same - Google Patents
Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the sameInfo
- Publication number
- JPH0797602A JPH0797602A JP5265767A JP26576793A JPH0797602A JP H0797602 A JPH0797602 A JP H0797602A JP 5265767 A JP5265767 A JP 5265767A JP 26576793 A JP26576793 A JP 26576793A JP H0797602 A JPH0797602 A JP H0797602A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- sheet
- metal fiber
- fiber
- sintered sheet
- 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
Landscapes
- Powder Metallurgy (AREA)
- Paper (AREA)
Abstract
(57)【要約】
【目的】 貴金属類や希少金属類の特性を発揮できる、
異種金属を表面に担持した、多孔性で緻密な網状構造を
した焼結シートおよびその製造方法を提供する。
【構成】 金属繊維含有スラリーから湿式抄紙法により
得られた金属繊維高配合シートを、非酸化性雰囲気下に
金属繊維の融点を超えない温度で繊維間を焼結した多孔
性金属繊維焼結シートの表面に、該金属繊維焼結シート
の金属とは異なる金属類を被覆したことを特徴とする異
種金属被覆多孔性金属繊維焼結シートおよびその製造方
法である。(57) [Summary] [Purpose] To exhibit the characteristics of precious metals and rare metals,
Provided is a sintered sheet having a porous and dense network structure, which carries a dissimilar metal on the surface, and a method for producing the same. [Structure] Porous metal fiber sintered sheet obtained by sintering a high-mixed metal fiber sheet obtained by a wet papermaking method from a metal fiber-containing slurry in a non-oxidizing atmosphere at a temperature not exceeding the melting point of the metal fiber between the fibers. The surface of the metal fiber sintered sheet is coated with a metal different from the metal of the metal fiber sintered sheet, and a dissimilar metal-coated porous metal fiber sintered sheet and a method for producing the same.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フィルター、触媒、導
電性材料等への使用に適した多孔性金属繊維焼結シート
およびその製造方法に関する。さらに詳しくは、多孔性
金属繊維焼結シートの表面に、該シートの金属とは異な
る金属類を単層または複数層被覆した多孔性金属繊維焼
結シート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 porous metal fiber sintered sheet suitable for use in filters, catalysts, conductive materials and the like, and a method for producing the same. More specifically, the present invention relates to a porous metal fiber sintered sheet obtained by coating the surface of a porous metal fiber sintered sheet with a metal different from the metal of the sheet in a single layer or a plurality of layers, and a method for producing the same.
【０００２】[0002]
【従来の技術】従来多孔性の金属シート状物としては、
金網、ウエッブ、織布、焼結体等が知られている。金
網、ウエッブおよび織布は、金属繊維のモノフィラメン
トあるいはマルチフィラメントを用いて、メッシュ状あ
るいは布状に編組、紡織したものである。しかしこれら
は、孔径を小さくできない、繊維のホツレがある、薄い
ものができない、表面積が小さい等の問題があった。一
方焼結体は、金属粉末あるいは短繊維の金属を乾式法で
散布し、これを真空中あるいは不活性ガス中で金属の融
点近くまで加熱融着して作成される。しかしこれは、長
尺シートの製造が困難である、紙のように薄くかつ厚さ
の均一なシートを製造できない等の問題がある。2. Description of the Related Art As a conventional porous metal sheet material,
Wire nets, webs, woven fabrics, sintered bodies and the like are known. The wire net, the web, and the woven cloth are braided and spun into a mesh or cloth using metal fiber monofilaments or multifilaments. However, these have problems that the pore diameter cannot be reduced, fibers are frayed, thin ones cannot be formed, and the surface area is small. On the other hand, the sintered body is prepared by spraying a metal powder or a short fiber metal by a dry method and heating and fusing it in vacuum or in an inert gas to a temperature close to the melting point of the metal. However, this has problems that it is difficult to manufacture a long sheet, and it is impossible to manufacture a thin sheet having a uniform thickness like paper.
【０００３】これらの問題を解決するため、本発明者ら
は、特開昭６１−２２３１０５および特開平４−３３７
００７号公報において、湿式抄紙法による金属繊維焼結
シートの製造方法を提案した。しかしながらこの提案
は、主として単一な金属繊維を用いているため、シート
の本質的な特性が、用いた金属繊維固有の特性に支配さ
れるという欠点を有している。このため、電気的特性や
化学的特性で用途が制限されるという問題があった。こ
の問題を解決するため、本発明者らは特願平４−５９２
７６号で複数の異なる金属繊維あるいは金属粉末を用い
た金属繊維焼結シートの製造方法を提案した。この方法
は、金属繊維シートの特性に変化を与える。しかしこの
方法では、用いた金属繊維により焼結条件が制約される
こと、コスト高となり易い等の問題点があった。一方、
電子関係、化学関係等の産業分野では、これらの焼結シ
ートを触媒、導電性材料等に使用するに当たり、白金、
金、銀等の貴金属類、ニッケル、クロム、パラジウム等
の希少金属を使用する必要がある。これらの金属類は、
特異な化学的性質あるいは優れた導電性を有する。しか
しその希少性から、工業材料としては価格が高く、その
用途も制約を受けることとなっている。近年、科学技術
の進歩は、これらの金属類使用の必要性を拡大するもの
となっている。中でも、電子関係、化学関係等の産業界
では、触媒、導電性材料等に使用するため、貴金属類や
希少金属類を担持した表面積の大きい多孔性シートに対
する需要が増加している。しかし、紙のように薄く、孔
径が均一で、かつ耐熱性を具備した多孔性シートはな
く、その開発に対する要求が大きい。In order to solve these problems, the inventors of the present invention have disclosed in JP-A-61-223105 and JP-A-4-337.
In Japanese Patent Publication No. 007, a method for producing a metal fiber sintered sheet by a wet papermaking method was proposed. However, this proposal has the drawback that the essential properties of the sheet are governed by the properties inherent to the metal fibers used, since they mainly use a single metal fiber. For this reason, there is a problem that the application is limited by electrical characteristics and chemical characteristics. In order to solve this problem, the present inventors have filed Japanese Patent Application No. 4-592.
No. 76 proposed a method for producing a metal fiber sintered sheet using a plurality of different metal fibers or metal powders. This method changes the properties of the metal fiber sheet. However, this method has problems that the sintering conditions are restricted by the metal fibers used and that the cost tends to increase. on the other hand,
In the industrial fields such as electronic and chemical fields, platinum, platinum, etc.
It is necessary to use precious metals such as gold and silver and rare metals such as nickel, chromium and palladium. These metals are
It has a unique chemical property or excellent conductivity. However, due to their rarity, they are expensive as industrial materials and their applications are also restricted. In recent years, advances in science and technology have expanded the need to use these metals. In particular, in the industries related to electronics and chemistry, since they are used for catalysts, conductive materials, etc., there is an increasing demand for porous sheets having a large surface area carrying precious metals and rare metals. However, there is no porous sheet that is as thin as paper, has a uniform pore size, and has heat resistance, and there is a great demand for its development.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、触媒、導電
性材料等への使用に適した多孔性金属繊維焼結シートお
よびその製造方法の提供を目的とする。上記目的は、貴
金属類や希少金属類の特性を発揮できる、異種金属を表
面に担持した、多孔性で緻密な網状構造をした焼結シー
トおよびその製造方法の提供により達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a porous metal fiber sintered sheet suitable for use as a catalyst, a conductive material, etc., and a method for producing the same. The above object is achieved by providing a sintered sheet having a porous and dense network structure capable of exhibiting the characteristics of noble metals and rare metals and having different metals supported on the surface thereof, and a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】本発明は、金属繊維含有
スラリーから湿式抄紙法により得られた金属繊維高配合
シートを、非酸化性雰囲気下に金属繊維の融点を超えな
い温度で繊維間を焼結した多孔性金属繊維焼結シートの
表面に、該金属繊維焼結シートの金属とは異なる金属類
を被覆したことを特徴とする異種金属被覆多孔性金属繊
維焼結シートおよびその製造方法を提供する。Means for Solving the Problems The present invention provides a sheet with a high metal fiber content obtained by a wet papermaking method from a metal fiber-containing slurry, in which the interfibers are kept in a non-oxidizing atmosphere at a temperature not exceeding the melting point of the metal fibers. A dissimilar metal-coated porous metal fiber sintered sheet and a method for producing the same, characterized in that the surface of the sintered porous metal fiber sintered sheet is coated with a metal different from the metal of the metal fiber sintered sheet. provide.
【０００６】金属繊維高配合シートは、湿式抄紙法によ
り作成される。すなわち、金属繊維の配合率が７０重量
％以上であり、結着剤の配合率が３０重量％以下である
スラリーを、湿式抄紙法によりシート化し、これをプレ
ス脱水、加熱乾燥して金属繊維高配合シートを作成す
る。金属繊維の繊維形状としては、繊維直径が３０μｍ
以下、好ましくは２０μｍ以下であり、アスペクト比が
２０００以下、好ましくは１０００以下の短繊維が好ま
しく用いられる。金属繊維の金属としては、ステンレ
ス、ニッケル、銅、アルミニウム、インコネル、ハステ
ロイ等の純金属あるいは合金が例示される。金属種とし
ては、特にこれらに限定されるものではなく、湿式抄紙
法により抄紙でき、かつ焼結できる金属であれば、適宜
いずれの金属をも採用できる。金属繊維の配合率が７０
重量％よりも少ないと、焼結の際に、金属繊維間の焼結
が阻害され易いという不利益を生じる。結着剤として
は、セルロースパルプや湿熱溶解性のポリビニルアルコ
ール繊維が好ましく用いられるが、特にこれらに限定さ
れるものではない。The high metal fiber content sheet is prepared by a wet papermaking method. That is, a slurry having a metal fiber content of 70% by weight or more and a binder content of 30% by weight or less is formed into a sheet by a wet papermaking method, press-dehydrated, and heat-dried to increase the metal fiber height. Create a formulation sheet. As the fiber shape of the metal fiber, the fiber diameter is 30 μm
Hereafter, short fibers having an aspect ratio of 2000 or less, preferably 1000 or less, preferably 20 μm or less, are preferably used. Examples of the metal of the metal fiber include pure metals such as stainless steel, nickel, copper, aluminum, Inconel, and Hastelloy, or alloys. The metal species is not particularly limited to these, and any metal can be appropriately used as long as it can be paper-formed by the wet paper-making method and can be sintered. Metal fiber content is 70
If it is less than the weight%, there is a disadvantage that the sintering between the metal fibers is likely to be disturbed during the sintering. Cellulose pulp and polyvinyl alcohol fibers which are soluble in heat and heat are preferably used as the binder, but the binder is not particularly limited thereto.
【０００７】ついで金属繊維高配合シートを、真空中、
不活性ガス雰囲気中あるいは還元性雰囲気中等の非酸化
性雰囲気中で、金属繊維の融点を超えない温度範囲に加
熱し、繊維間を焼結する。このとき、結着剤は熱分解さ
れ、金属繊維が実質的に１００重量％を占める多孔性焼
結シートが作成される。金属繊維間の結合、絡み合い状
態をより安定化あるいは密度調整をするために、焼結の
前、後あるいは焼結中に加圧処理を加えてもよい。得ら
れた多孔性金属繊維焼結シートの片面あるいは両面に、
金属繊維の金属とは異なる金属を被覆する。被覆方法と
しては、電解メッキ法、無電解メッキ法、スパッタリン
グ法、蒸着法、プラズマ溶射法等、各種公知の方法を採
用できる。被覆される金属の種類、厚さ、被覆方法等
は、用途により適宜選択される。焼結シートと表面被覆
金属との接着性を向上させるために、焼結シートの表面
を酸処理して被覆金属との接触面積を増大してもよい。
あるいは表面被覆金属と親和性の高い、例えば化学的に
類似性のある金属、すわわち結晶形態が類似しており、
相互拡散性の高い金属を予め焼結シートの表面に被覆
し、ついで目的とする表面被覆金属を被覆してもよい。
本発明においては、湿式抄紙法により製造された金属繊
維高配合したシートを焼結したシートを基体として用い
るため、焼結シートの表面積が非常に大きいという利点
がある。また焼結シートの金属とは異なる金属を表面に
被覆することとなるため、価格の高い貴金属類や希少金
属類の使用比率を低減できるという利点がある。このた
め、触媒、導電性材料等への使用に適した金属被覆焼結
シートを安価に提供できるという利点がある。以下実施
例に基づいて本発明をより詳細に説明する。Then, the sheet containing a high content of metal fibers was placed in a vacuum,
In a non-oxidizing atmosphere such as an inert gas atmosphere or a reducing atmosphere, the fibers are heated to a temperature range not exceeding the melting point of the metal fibers to sinter the fibers. At this time, the binder is pyrolyzed to form a porous sintered sheet in which the metal fibers account for substantially 100% by weight. A pressure treatment may be performed before, after, or during the sintering in order to further stabilize the state of binding or entanglement between the metal fibers or to adjust the density. On one side or both sides of the obtained porous metal fiber sintered sheet,
A metal different from the metal of the metal fiber is coated. As a coating method, various known methods such as an electrolytic plating method, an electroless plating method, a sputtering method, a vapor deposition method and a plasma spraying method can be adopted. The type, thickness, coating method, etc. of the metal to be coated are appropriately selected depending on the application. In order to improve the adhesion between the sintered sheet and the surface coating metal, the surface of the sintered sheet may be treated with an acid to increase the contact area with the coating metal.
Alternatively, a metal having a high affinity with the surface coating metal, for example, a chemically similar metal, that is, having a similar crystal morphology,
A metal having a high mutual diffusion property may be coated on the surface of the sintered sheet in advance, and then a target surface-coated metal may be coated.
In the present invention, since a sheet obtained by sintering a sheet containing a high content of metal fibers produced by a wet papermaking method is used as a substrate, there is an advantage that the surface area of the sintered sheet is very large. Further, since a metal different from the metal of the sintered sheet is coated on the surface, there is an advantage that it is possible to reduce the usage ratio of expensive precious metals and rare metals. Therefore, there is an advantage that a metal-coated sintered sheet suitable for use as a catalyst, a conductive material or the like can be provided at low cost. The present invention will be described in more detail based on the following examples.
【０００８】実施例１ 繊維長４ｍｍ、繊維直径８μｍのステンレス繊維９０重
量％と繊維長３ｍｍのポリビニルアルコール繊維（以下
ＰＶＡ繊維という）１０重量％とからなるスラリーを湿
式抄紙法により抄紙して、乾燥後の坪量８４ｇ／ｍ2の
金属繊維高配合シートを作成した。ついで該シートを、
真空焼結炉を用いて、焼結温度１１８０℃、焼結時間１
２０分間の条件で焼結し、密度１．１ｇ／ｃｍ3の多孔
性金属繊維焼結シートを作成した。この焼結シートを、
下記条件で電気メッキし、膜厚０．２μｍに金メッキし
た。 電流密度：５．０Ａ／ｄｍ2 浴液 ：Ｋ２４ＥＡ３０（高純度化学(株)製） 処理温度：４０℃ 陽極 ：白金メッキチタン板 金で表面被覆された多孔性金属焼結シートの空隙率は８
６％、平均孔径は５０μｍであった。Example 1 A slurry composed of 90% by weight of stainless fiber having a fiber length of 4 mm and a fiber diameter of 8 μm and 10% by weight of polyvinyl alcohol fiber (hereinafter referred to as PVA fiber) having a fiber length of 3 mm was prepared by a wet papermaking method and dried. A high metal fiber content sheet having a basis weight of 84 g / m 2 was prepared. Then, the sheet,
Using a vacuum sintering furnace, sintering temperature 1180 ° C, sintering time 1
Sintering was carried out for 20 minutes to prepare a porous metal fiber sintered sheet having a density of 1.1 g / cm 3 . This sintered sheet,
Electroplating was performed under the following conditions, and gold was plated to a thickness of 0.2 μm. Current density: 5.0 A / dm 2 bath liquid: K24EA30 (manufactured by Kojundo Chemical Co., Ltd.) Treatment temperature: 40 ° C. Anode: Platinum plated titanium sheet The porosity of the sintered porous metal sheet is 8
6% and the average pore diameter was 50 μm.
【０００９】実施例２ 繊維長１ｍｍ、繊維直径１μｍのステンレス繊維９５重
量％と繊維長３ｍｍのＰＶＡ繊維５重量％とからなるス
ラリーを湿式抄紙法により抄紙して、乾燥後の坪量１５
０ｇ／ｍ2の金属繊維高配合シートを作成した。ついで
該シートを、常温、線圧１００ｋｇ／ｃｍの条件で圧着
し、密度３ｇ／ｃｍ3のシートを作成した。このシート
を連続還元炉を用いて、焼結温度１０５０℃、焼結速度
２０ｃｍ／分の条件で焼結し、多孔性金属繊維焼結シー
トを作成した。この焼結シートを下記条件で無電解メッ
キし、膜厚０．５μｍに銀メッキした。 無電解メッキ液：Ｓ−８００（高純度化学(株)製） 処理温度 ：２５℃ メッキ時間 ：１０分間 銀で表面被覆された多孔性金属焼結シートの空隙率は６
０％、平均孔径２μｍであった。Example 2 A slurry composed of 95% by weight of stainless fiber having a fiber length of 1 mm and a fiber diameter of 1 μm and 5% by weight of PVA fiber having a fiber length of 3 mm was made into paper by a wet papermaking method, and the basis weight after drying was 15
A sheet with a high metal fiber content of 0 g / m 2 was prepared. Then, the sheet was pressure-bonded at room temperature and a linear pressure of 100 kg / cm to prepare a sheet having a density of 3 g / cm 3 . Using a continuous reduction furnace, this sheet was sintered at a sintering temperature of 1050 ° C. and a sintering rate of 20 cm / min to prepare a porous metal fiber sintered sheet. This sintered sheet was electroless plated under the following conditions and silver-plated to a film thickness of 0.5 μm. Electroless plating solution: S-800 (manufactured by Kojundo Chemical Co., Ltd.) Treatment temperature: 25 ° C. Plating time: 10 minutes Porosity of the porous metal sintered sheet surface-coated with silver is 6
It was 0% and the average pore diameter was 2 μm.
【００１０】実施例３ 繊維長４ｍｍ、繊維直径８μｍのステンレス繊維９５重
量％と繊維長３ｍｍのＰＶＡ繊維５重量％とからなるス
ラリーを湿式抄紙法により抄紙して、乾燥後の坪量８０
ｇ／ｍ2の金属繊維高配合シートを作成した。このシー
トを連続還元炉を用いて、焼結温度１１８０℃、焼結速
度２０ｃｍ／分の条件で焼結し、密度１．０ｇ／ｃｍ3
の多孔性金属繊維焼結シートを作成した。この焼結シー
トにイオンコーター機（エイコーエンジニアリング(株)
製、１Ｂ−３型）を用い、真空度１０-1ｔｏｒｒで金を
膜厚０．１μｍに形成し、さらにその表面に上記と同条
件で白金を膜厚０．４μｍに積層形成した。白金で表面
被覆された多孔性金属焼結シートの空隙率は８７％、平
均孔径は８０μｍであった。この表面被覆焼結シートの
電子顕微鏡による表面写真（倍率×３５０）を図１に示
す。シートの表面は、多孔質状の金属繊維焼結シートで
あり、Ｘ線マイクロアナライザーによる元素分析の結
果、図２に示すように、白金の存在が確認された。Example 3 A slurry composed of 95% by weight of stainless fiber having a fiber length of 4 mm and a fiber diameter of 8 μm and 5% by weight of PVA fiber having a fiber length of 3 mm was paper-made by a wet paper making method, and the basis weight after drying was 80.
A sheet with a high metal fiber content of g / m 2 was prepared. This sheet was sintered using a continuous reduction furnace at a sintering temperature of 1180 ° C. and a sintering rate of 20 cm / min to give a density of 1.0 g / cm 3.
A porous metal fiber sintered sheet was prepared. Ion coater machine (Eiko Engineering Co., Ltd.)
1B-3 type), gold was formed to a film thickness of 0.1 μm at a vacuum degree of 10 −1 torr, and platinum was laminated on the surface to a film thickness of 0.4 μm under the same conditions as above. The porous metal sintered sheet surface-coated with platinum had a porosity of 87% and an average pore diameter of 80 μm. An electron micrograph (magnification: 350) of this surface-coated sintered sheet is shown in FIG. The surface of the sheet was a porous metal fiber sintered sheet, and as a result of elemental analysis by an X-ray microanalyzer, the presence of platinum was confirmed as shown in FIG.
【００１１】比較例１ １００メッシュのステンレス製金網に、実施例１と同一
条件で電気メッキし、膜厚０．２μｍに金メッキした。
金で表面被覆されたステンレス製金網の空隙率は７４
％、平均孔径は１３０μｍであった。また繊維のホツレ
があり、品質維持に問題があった。Comparative Example 1 A 100-mesh stainless steel wire net was electroplated under the same conditions as in Example 1 to give a thickness of 0.2 μm.
The porosity of stainless steel wire mesh coated with gold is 74
%, And the average pore diameter was 130 μm. Moreover, there was a fray of the fiber, and there was a problem in maintaining the quality.
【００１２】比較例２ 繊維長４ｍｍ、繊維直径５０μｍの白金繊維４０重量％
と、繊維長４ｍｍ、繊維直径８μｍのステンレス繊維５
５重量％と、繊維長３ｍｍのＰＶＡ繊維５重量％とから
なるスラリーを湿式抄紙法により抄紙して、乾燥後の坪
量８０ｇ／ｍ2の金属繊維高配合シートを作成した。こ
のシートを連続還元炉を用いて、焼結温度１１８０℃、
焼結速度２０ｃｍ／分の条件で焼結し、密度１．５ｇ／
ｃｍ3の多孔性金属繊維焼結シートを作成した。このシ
ートは空隙率９０％、平均孔径６０μｍであったが、白
金繊維が焼結していないため、繊維の脱落があり、問題
を生ずるものであった。実施例１〜３および比較例１〜
２で得られたシートについての各種物性測定結果を表１
にまとめて示す。Comparative Example 2 40% by weight of platinum fiber having a fiber length of 4 mm and a fiber diameter of 50 μm
And a stainless fiber 5 having a fiber length of 4 mm and a fiber diameter of 8 μm
A slurry composed of 5% by weight and 5% by weight of PVA fiber having a fiber length of 3 mm was subjected to papermaking by a wet papermaking method to prepare a sheet having a high basis weight of 80 g / m 2 of metal fiber after drying. Using a continuous reduction furnace, this sheet was sintered at a temperature of 1180 ° C.
Sintered at a sintering rate of 20 cm / min and a density of 1.5 g /
A cm 3 porous metal fiber sintered sheet was prepared. This sheet had a porosity of 90% and an average pore diameter of 60 μm, but since the platinum fibers were not sintered, the fibers fell off, which caused a problem. Examples 1-3 and Comparative Examples 1-
Table 1 shows the results of measuring various physical properties of the sheet obtained in 2 above.
Are shown together.
【００１３】 表１ 表面被覆 坪量 空隙率 平均孔径 電気抵抗 繊維の の有無 (g/m2) (%) (μｍ) 値（ｍΩ） 脱落性 実施例１ 未被覆 ８４ ８６ ５０ １４０ − 金被覆 ８４ ８６ ５０ ８０ ○ 実施例２ 未被覆 １５０ ６０ ２ １１０ − 銀被覆 １５０ ６０ ２ ６０ ○ 実施例３ 未被覆 ８０ ８７ ８０ １５０ − （Au+Pt)被覆 ８０ ８７ ８０ ７０ ○ 比較例１ 金被覆 ５３２ ７４ １３０ ９０ × 比較例２ なし １５０ ９０ ６０ １００ × 注：繊維の脱落性；○ なし、 × あり 空隙率（％）＝（１−シートの見掛け密度／構成材料の
真密度）×１００ 平均孔径：ＡＳＴＭ−Ｆ−３１６−８６に従いＰＯＲＯ
ＵＳ ＭＡＴＥＲＩＡＬＳ，ＩＮＣ．製のＰｅｒｍ Ｐ
ｏｒｏｍｅｔｅｒを用いて測定した。 電気抵抗値：三菱油化(株)製表面抵抗計ＭＣＰ−ＴＥＳ
ＴＥＲ（Ｌｏｒｅｓｔａ−ＦＰ）を用いて測定した。Table 1 Surface coating Basis weight Porosity Average pore size Electric resistance Presence or absence of fiber (g / m 2 ) (%) (μm) Value (mΩ) Falling off Example 1 Uncoated 84 86 50 140-Gold coated 84 86 50 80 ○ Example 2 Uncoated 150 60 2 110-Silver coating 150 60 260 60 Example 3 Uncoated 80 87 80 150- (Au + Pt) coating 80 87 80 70 ○ Comparative Example 1 Gold coating 532 74 130 90 × Comparative Example 2 None 150 90 60 100 × Note: Fiber drop-off property: ○ None, × Yes Porosity (%) = (1-apparent density of sheet / true density of constituent material) × 100 Average pore diameter: ASTM− According to F-316-86, PORO
US MATERIALS, INC. Made of Perm P
It was measured using an orometer. Electric resistance: Mitsubishi Yuka Co., Ltd. surface resistance meter MCP-TES
It was measured using TER (Loresta-FP).
【００１４】[0014]
【発明の効果】本発明によれば、触媒、導電性材料等へ
の使用に適した異種金属被覆多孔性金属繊維焼結シート
およびその製造方法が提供される。本発明によれば、貴
金属類や希少金属類の特性を発揮できる、異種金属を表
面に担持した、多孔性で緻密な網状構造をした、厚さの
均一な異種金属被覆多孔性金属繊維焼結シートおよびそ
の製造方法が提供される。さらに本発明によれば、比較
的価格の高い希少金属の消費を少なくできるため、製造
時の原料費用を低減できる。また、シートの厚みが薄
く、多孔性で高空隙率のシートを提供できるため、比表
面積が大きく、切断、打ち抜き等の２次加工性に優れた
異種金属被覆多孔性金属繊維焼結シートおよびその製造
方法が提供される。EFFECTS OF THE INVENTION According to the present invention, there is provided a different metal-coated porous metal fiber sintered sheet suitable for use as a catalyst, a conductive material and the like, and a method for producing the same. According to the present invention, it is possible to exhibit the characteristics of noble metals and rare metals, to carry a heterogeneous metal on the surface, to form a porous and dense network structure, to dispose a heterogeneous metal-coated porous metal fiber having a uniform thickness. A sheet and a method of manufacturing the sheet are provided. Further, according to the present invention, the consumption of rare metal, which is relatively expensive, can be reduced, so that the raw material cost at the time of manufacturing can be reduced. Further, since a thin sheet, a porous sheet having a high porosity can be provided, a specific surface area is large, and a dissimilar metal-coated porous metal fiber sintered sheet excellent in secondary workability such as cutting and punching, and the same are provided. A manufacturing method is provided.
図１は、実施例３で得られた異種金属被覆多孔性金属繊
維焼結シートの表面組織を示す電子顕微鏡写真である。
図２は、実施例３で得られた異種金属被覆多孔性金属繊
維焼結シートの表面分析結果を示す。FIG. 1 is an electron micrograph showing the surface texture of the dissimilar metal-coated porous metal fiber sintered sheet obtained in Example 3.
FIG. 2 shows the surface analysis result of the dissimilar metal-coated porous metal fiber sintered sheet obtained in Example 3.
Claims (3)
より得られた金属繊維高配合シートを、非酸化性雰囲気
下に金属繊維の融点を超えない温度で繊維間を焼結した
多孔性金属繊維焼結シートの表面に、該金属繊維焼結シ
ートの金属とは異なる金属類を被覆したことを特徴とす
る異種金属被覆多孔性金属繊維焼結シート。1. A porous metal fiber fired product obtained by sintering a metal fiber-rich sheet obtained by a wet papermaking method from a metal fiber-containing slurry in a non-oxidizing atmosphere at a temperature not exceeding the melting point of the metal fibers and between the fibers. A dissimilar metal-coated porous metal fiber sintered sheet, characterized in that the surface of the binding sheet is coated with a metal different from the metal of the metal fiber sintered sheet.
繊維焼結シートにおいて、異種金属が、単層または複数
層からなることを特徴とする異種金属被覆多孔性金属繊
維焼結シート。2. The dissimilar metal-coated porous metal fiber sintered sheet according to claim 1, wherein the dissimilar metal comprises a single layer or a plurality of layers.
金属被覆多孔性金属繊維焼結シートの製造方法、 ａ． 金属繊維含有スラリーから湿式抄紙法により金属
繊維高配合シートを製造する工程、 ｂ． 金属繊維高配合シートを、非酸化性雰囲気下で金
属繊維の融点を超えない温度で繊維間を焼結することか
らなる多孔性金属繊維焼結シートを製造する工程、 ｃ． 多孔性金属繊維焼結シートを、該シートの金属と
は異なる金属で被覆することからなる異種金属被覆多孔
性金属繊維焼結シートを製造する工程。3. A method for producing a dissimilar metal-coated porous metal fiber sintered sheet, which comprises the following steps a, b and c: a. A step of producing a metal fiber-rich sheet by a wet papermaking method from a metal fiber-containing slurry, b. A step of producing a porous metal fiber sintered sheet, which comprises sintering a metal-fiber-highly mixed sheet between fibers at a temperature not exceeding the melting point of the metal fibers in a non-oxidizing atmosphere, c. A step of producing a dissimilar metal-coated porous metal fiber sintered sheet, which comprises coating a porous metal fiber sintered sheet with a metal different from the metal of the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5265767A JPH0797602A (en) | 1993-09-29 | 1993-09-29 | Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5265767A JPH0797602A (en) | 1993-09-29 | 1993-09-29 | Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0797602A true JPH0797602A (en) | 1995-04-11 |
Family
ID=17421747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5265767A Pending JPH0797602A (en) | 1993-09-29 | 1993-09-29 | Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0797602A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000078692A1 (en) * | 1999-06-23 | 2000-12-28 | Abb Lummus Global, Inc. | Method for producing a shaped sintered porous body, body so produced and uses thereof |
| US6228509B1 (en) * | 1998-01-30 | 2001-05-08 | Tomoegawa Paper Co., Ltd | Electromagnetic wave shielding sheet |
| CN102861912A (en) * | 2012-09-23 | 2013-01-09 | 西北有色金属研究院 | Preparation method of metal fiber sintering felt |
| CN103042216A (en) * | 2012-11-29 | 2013-04-17 | 西安菲尔特金属过滤材料有限公司 | Sintering method of aluminum fiber mat |
| US20180162098A1 (en) * | 2015-09-07 | 2018-06-14 | Hak Sik JOO | Fused sheet for electromagnetic wave absorption-extinction and shielding, and for electronic equipment high heat dissipation, and method of manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61223105A (en) * | 1985-03-29 | 1986-10-03 | Tomoegawa Paper Co Ltd | Sintered metallic fiber sheet and its production |
| JPH04337007A (en) * | 1991-05-14 | 1992-11-25 | Tomoegawa Paper Co Ltd | Production of sintered sheet of metallic fiber |
| JPH05230799A (en) * | 1992-02-14 | 1993-09-07 | Tomoegawa Paper Co Ltd | Metal fiber sintered sheet and manufacturing method thereof |
-
1993
- 1993-09-29 JP JP5265767A patent/JPH0797602A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61223105A (en) * | 1985-03-29 | 1986-10-03 | Tomoegawa Paper Co Ltd | Sintered metallic fiber sheet and its production |
| JPH04337007A (en) * | 1991-05-14 | 1992-11-25 | Tomoegawa Paper Co Ltd | Production of sintered sheet of metallic fiber |
| JPH05230799A (en) * | 1992-02-14 | 1993-09-07 | Tomoegawa Paper Co Ltd | Metal fiber sintered sheet and manufacturing method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228509B1 (en) * | 1998-01-30 | 2001-05-08 | Tomoegawa Paper Co., Ltd | Electromagnetic wave shielding sheet |
| WO2000078692A1 (en) * | 1999-06-23 | 2000-12-28 | Abb Lummus Global, Inc. | Method for producing a shaped sintered porous body, body so produced and uses thereof |
| US6365092B1 (en) | 1999-06-23 | 2002-04-02 | Abb Lummus Global, Inc. | Method for producing a sintered porous body |
| CN102861912A (en) * | 2012-09-23 | 2013-01-09 | 西北有色金属研究院 | Preparation method of metal fiber sintering felt |
| CN103042216A (en) * | 2012-11-29 | 2013-04-17 | 西安菲尔特金属过滤材料有限公司 | Sintering method of aluminum fiber mat |
| US20180162098A1 (en) * | 2015-09-07 | 2018-06-14 | Hak Sik JOO | Fused sheet for electromagnetic wave absorption-extinction and shielding, and for electronic equipment high heat dissipation, and method of manufacturing the same |
| US11052636B2 (en) * | 2015-09-07 | 2021-07-06 | Hak Sik JOO | Fused sheet for electromagnetic wave absorption-extinction and shielding, and for electronic equipment high heat dissipation, and method of manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0721994B1 (en) | Process for preparing metallic porous body, electrode substrate for battery and process for preparing the same | |
| US5304330A (en) | Preparation of mixed fiber composite structures | |
| US5102745A (en) | Mixed fiber composite structures | |
| JP3567488B2 (en) | Method for producing porous metal body with high corrosion resistance | |
| EP1807185B1 (en) | Preparation method of palladium alloy composite membrane for hydrogen separation | |
| WO2011010697A1 (en) | Electromagnetic shielding sheet | |
| US5643684A (en) | Unwoven metal fabric | |
| JPH06505543A (en) | Turbomachinery coating and its manufacturing method | |
| JPH0797602A (en) | Dissimilar metal-coated porous metal fiber sintered sheet and method for producing the same | |
| US2872312A (en) | Electroless plating of non-conductors | |
| EP0750360B1 (en) | Electrode substrate for battery and process for preparing the same | |
| JP2562761B2 (en) | Manufacturing method of sintered metal fiber sheet | |
| JPH08225865A (en) | Method for producing three-dimensional network metal porous body | |
| JP6076249B2 (en) | Coated fibrous copper fine particles, and conductive coating agent and conductive film containing the coated fibrous copper fine particles | |
| JP2767738B2 (en) | Manufacturing method of metal fiber sintered sheet | |
| EP0686718B1 (en) | Unwoven metal fabric and method of manufacturing the same | |
| JP2003286588A (en) | Process for preparing composite conductive material | |
| JPH0641603B2 (en) | Manufacturing method of sintered metal fiber sheet | |
| JPH08193232A (en) | Method for producing metal porous body | |
| JPS6227035B2 (en) | ||
| JP2005032527A (en) | Current collector for solid oxide fuel cell and solid oxide fuel cell using the same | |
| JPH04337007A (en) | Production of sintered sheet of metallic fiber | |
| JPH08222226A (en) | Method for manufacturing three-dimensional network electrode carrier | |
| WO2024134893A1 (en) | Metal sheet, battery, nickel-zinc battery, and method for producing metal sheet | |
| JP2006086007A (en) | Fuel electrode for solid oxide fuel cell and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020827 |