JPH0892669A - Heat treatment of metallic porous body - Google Patents
Heat treatment of metallic porous bodyInfo
- Publication number
- JPH0892669A JPH0892669A JP6235068A JP23506894A JPH0892669A JP H0892669 A JPH0892669 A JP H0892669A JP 6235068 A JP6235068 A JP 6235068A JP 23506894 A JP23506894 A JP 23506894A JP H0892669 A JPH0892669 A JP H0892669A
- Authority
- JP
- Japan
- Prior art keywords
- composite sheet
- base material
- treatment
- water
- heat treatment
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000004071 soot Substances 0.000 claims abstract description 22
- 238000007747 plating Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 6
- 230000000887 hydrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 208000031872 Body Remains Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/808—Foamed, spongy materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Inert Electrodes (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ニッケルカドニウム電
池，リチウム電池，燃料電池などの各種電池の電極に用
いる金属多孔体の製造方法、特に金属多孔体の熱処理方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a porous metal body used for electrodes of various batteries such as nickel-cadmium batteries, lithium batteries and fuel cells, and more particularly to a heat treatment method for the porous metal body.
【０００２】[0002]
【従来の技術】上記目的に使用される金属多孔体は、パ
ンチングメタルによるものを除き、ポリプロピレン，ポ
リウレタン等の合成樹脂を用いた基材の表面に金属メッ
キを施して複合シートとし、その後、複合シートから基
材を除去して製造される。上記基材は、三次元網目組織
の骨格を有しており、金属メッキは、その骨格表面に形
成されるため、得られた金属多孔体は基材の骨格を象っ
た三次元網目組織となる。複合シートからの基材の除去
は、複合シートを熱処理し、基材を消失させることによ
って行われる。2. Description of the Related Art The metal porous body used for the above purpose, except for punching metal, is a composite sheet obtained by metal-plating the surface of a substrate made of a synthetic resin such as polypropylene or polyurethane. It is manufactured by removing the base material from the sheet. The substrate has a three-dimensional network skeleton, and the metal plating is formed on the surface of the skeleton, so that the obtained metal porous body has a three-dimensional network structure imitating the skeleton of the substrate. Become. The removal of the base material from the composite sheet is performed by heat-treating the composite sheet and causing the base material to disappear.
【０００３】従来、金属多孔体の製造に際しては、基材
に導電化処理を施し、該処理後、メッキ液、例えば硫酸
ニッケル浴に浸漬し、真空含浸により基材の三次元網目
組織内にメッキ液を含浸させ、一定厚さにメッキを行っ
た後、得られた複合シートを水洗し、これを乾燥させて
から、まず空気中において６００℃で２０分間加熱して
基材を取り除き、さらに水素中において９００℃で１５
分間加熱して金属多孔体の骨格の強度を増大させて完成
するのが通例である（特開昭５５−３９１８１号参
照）。Conventionally, in the production of a porous metal body, a base material is subjected to a conductive treatment, and after the treatment, it is immersed in a plating solution, for example, a nickel sulfate bath, and vacuum impregnation is performed to plate the three-dimensional network structure of the base material. After the solution is impregnated and plated to a certain thickness, the resulting composite sheet is washed with water and dried, then first heated in air at 600 ° C for 20 minutes to remove the base material, and then hydrogen. 15 at 900 ℃ in
It is customary to heat for a minute to increase the strength of the skeleton of the porous metal body for completion (see JP-A-55-39181).
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記の処理
によって最終的に得られた金属多孔体は、表面が黒ず
み、これが斑模様となって表われることがある。この模
様は炭素（煤）が金属多孔体の表面に付着し、熱処理の
際に、基材の一部が炭素として残留したものであると推
測される。たしかに、ポリウレタンシートを基材に使用
した複合シートの熱処理を行った状況では、加熱炉内に
導入される前に、加熱炉入口のガスの炎に触れて黒煙を
発し、加熱炉内では表面の金属多孔体が赤熱し、その表
面から盛んに黒煙を発していることが観測された。However, the metal porous body finally obtained by the above treatment may have a darkened surface, which may appear as a mottled pattern. This pattern is presumed to be carbon (soot) attached to the surface of the porous metal body, and a part of the base material remained as carbon during the heat treatment. Certainly, in a situation where a composite sheet using a polyurethane sheet as a base material was heat-treated, before it was introduced into the heating furnace, it touched the flame of the gas at the heating furnace inlet, producing black smoke, and in the heating furnace, the surface It was observed that the metallic porous body of No. 2 became red hot and vigorously emitted black smoke from its surface.
【０００５】複合シートは、水平姿勢で加熱炉内に導入
されるが、金属多孔体のいずれの面に煤が付着するのか
は必ずしも特定できないようである。いずれにしても金
属多孔体が赤熱する前に発生した煤がその表面に付着
し、赤熱後も除去されなかった結果によるものではない
かと推測される。金属多孔体に付着した煤は、商品とし
て見苦しく、また、機能上に問題を生ずる場合がある。
煤を除去するには、金属多孔体表面の洗浄処理を後処理
として行わなければならないが、三次元の網目組織の表
面に付着した煤を除去することは難しい。The composite sheet is introduced into the heating furnace in a horizontal posture, but it seems that it cannot always be specified which surface of the porous metal body the soot adheres to. In any case, it is speculated that this is because the soot generated before the metallic porous body became red-heated adhered to the surface and was not removed even after red-heated. The soot attached to the metal porous body is unsightly as a product and may cause a functional problem.
To remove the soot, the surface of the porous metal body must be washed as a post-treatment, but it is difficult to remove the soot attached to the surface of the three-dimensional network structure.
【０００６】本発明の目的は、簡単な前処理を行うのみ
で通常の加熱処理を使用して多孔の網目組織の表面に煤
が付着しない金属多孔体の熱処理方法を提供することに
ある。It is an object of the present invention to provide a heat treatment method for a porous metal body in which soot does not adhere to the surface of a porous network structure by using a simple heat treatment and using a conventional heat treatment.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明による金属多孔体の熱処理方法においては、
基材の除去処理を有し、複合シートから金属多孔体を形
成する金属多孔体の熱処理方法であって、基材は、三次
元網状組織を有する熱分解性のシートであり、複合シー
トは、基材の三次元網状組織を骨格としてその表面に金
属メッキが施されたものであり、基材の除去処理は、水
分を含有させた複合シートを加熱処理し、基材の加熱処
理によって発生する煤を金属多孔体に付着させずに基材
を消失させる処理である。In order to achieve the above object, in the heat treatment method for a porous metal body according to the present invention,
A heat treatment method for a porous metal body having a base material removal treatment to form a porous metal body from a composite sheet, wherein the base material is a thermally decomposable sheet having a three-dimensional network, and the composite sheet is The surface of the base material is metal-plated with the three-dimensional network structure as the skeleton. The base material is removed by heat-treating the composite sheet containing water. This is a treatment for removing the base material without attaching soot to the porous metal body.
【０００８】また、基材の除去処理は、前処理として複
合シートに給水して水分を含有させ、引き続いて複合シ
ートの加熱処理を行うものである。Further, the removal treatment of the base material is performed by supplying water to the composite sheet to make it contain water as a pretreatment, and subsequently performing heat treatment of the composite sheet.
【０００９】また、複合シートに含水させる前処理は、
金属メッキ処理後の水洗浄処理であり、水洗浄処理によ
って含水した複合シートの熱処理を行うものである。Further, the pretreatment for hydrating the composite sheet is
This is a water washing treatment after the metal plating treatment, in which the composite sheet hydrated by the water washing treatment is heat treated.
【００１０】[0010]
【作用】本発明による加熱処理は、例えば含水した複合
シートを４００〜８００℃で加熱処理後、８００〜１１
００℃の還元、または不活性雰囲気中で加熱処理して焼
鈍するものである。この結果、可撓性を有し、強度的に
問題のない金属多孔体が得られる。In the heat treatment according to the present invention, for example, a composite sheet containing water is heat treated at 400 to 800 ° C. and then 800 to 11
It is the one that is reduced at 00 ° C. or heat-treated in an inert atmosphere and annealed. As a result, a porous metal body having flexibility and having no problem in strength can be obtained.
【００１１】基材には、ポリエステル，ポリプロピレ
ン，ポリウレタンなどの合成樹脂発泡体，ナイロン，ポ
リエステルなどの合成樹脂不織布、あるいは天然繊維，
セルロース，紙などの有機物などの三次元網目組織を有
し、且つ金属多孔体の溶融点以下の温度で熱分解が可能
な組成物のシートを用いる。もっとも、加熱処理後、残
宰を残さないことが必要である。As the base material, synthetic resin foam such as polyester, polypropylene and polyurethane, synthetic resin nonwoven fabric such as nylon and polyester, or natural fiber,
A sheet of a composition having a three-dimensional network structure of an organic substance such as cellulose or paper and capable of being thermally decomposed at a temperature below the melting point of the metal porous body is used. However, it is necessary to leave no residue after the heat treatment.
【００１２】金属多孔体を形成する金属は、主としてニ
ッケルである。金属多孔体は、基材に導電化処理を施
し、金属メッキ処理を施すことによって基材の三次元網
目組織の骨格表面にニッケルを付着させる。基材に金属
メッキ処理を施したシートが複合シートである。The metal forming the porous metal body is mainly nickel. In the metal porous body, nickel is attached to the skeleton surface of the three-dimensional network structure of the base material by subjecting the base material to a conductive treatment and a metal plating treatment. A sheet obtained by subjecting a base material to a metal plating treatment is a composite sheet.
【００１３】基材の除去処理は、複合シートを加熱して
基材を消失させる熱処理である。本発明ではその前処理
として複合シートを含水させる。基材がウレタン発泡体
であるときには、凡そ６００℃の温度でウレタンが熱分
解し、金属多孔体が基材の網目組織を骨格とする三次元
の網目組織となって残る。複合シートの水分は、基材の
消失自体には殆ど影響を与えないと考えられる。The base material removing treatment is a heat treatment for heating the composite sheet to remove the base material. In the present invention, the composite sheet is made to contain water as its pretreatment. When the base material is a urethane foam, the urethane is thermally decomposed at a temperature of about 600 ° C., and the metal porous body remains as a three-dimensional network structure having the network structure of the base material as a skeleton. It is considered that the water content of the composite sheet has little effect on the disappearance of the base material itself.
【００１４】基材の加熱処理に際しては、加熱炉内の高
温雰囲気に晒すことによって行う。例えば、加熱炉内に
空気の流入を防ぐため、入口にガスの炎を発生させた加
熱炉では、複合シートを水平姿勢で加熱炉内に搬入する
に際し、複合シートはまず、その下面が加熱炉の入口に
噴出するガス炎に触れ、引き続き加熱炉内の高温雰囲気
に晒されて基材が消失する。複合シートは、金属メッキ
処理後、水洗浄を施し、そのまま、あるいは半乾燥で水
分を含んだままの状態で加熱炉内に導入すれば、あえて
前処理として格別に給水処理を行うまでもない。もっと
も、乾燥した複合シートを加熱炉処理するときには、加
熱炉内への導入の前処理として給水処理を行うことにな
る。The heat treatment of the substrate is performed by exposing it to a high temperature atmosphere in a heating furnace. For example, in a heating furnace in which a gas flame is generated at the inlet to prevent the inflow of air into the heating furnace, when the composite sheet is loaded into the heating furnace in a horizontal posture, the bottom surface of the composite sheet is the heating furnace first. The base material disappears by being exposed to the high temperature atmosphere in the heating furnace while coming into contact with the gas flame ejected at the inlet of the. If the composite sheet is washed with water after the metal plating treatment and then introduced into the heating furnace as it is or in a state of containing semi-dried water, it is not necessary to perform a water supply treatment as a pretreatment. However, when the dried composite sheet is subjected to the heating furnace treatment, the water supply treatment is performed as a pretreatment before being introduced into the heating furnace.
【００１５】水分を含んだままの複合シートを熱処理し
たときに、金属多孔体の表面に煤が付着しない理由は必
ずしも明らかではないが、いくつかの理由は考えられ
る。例えば、熱力学的には、複合シートに含まれた水分
が、高温に触れて急激に加熱され、基材の熱分解時に発
生する煤，炭素系導電塗料の煤等に作用し、金属多孔体
への付着，凝集を妨げるものと考えられる。It is not always clear why soot does not adhere to the surface of the porous metal body when the composite sheet containing water is heat-treated, but some reasons are conceivable. For example, thermodynamically, the moisture contained in the composite sheet is exposed to a high temperature and rapidly heated to act on the soot generated during the thermal decomposition of the base material, the soot of the carbon-based conductive coating material, and the like. It is thought that this will prevent the adhesion and aggregation to.
【００１６】一方、水の物性から考えたときには、表面
張力，粘性と、熱膨張による作用効果が考えられる。水
は、他の液体と比べて表面張力は大きいが、その表面張
力，粘性はいずれも温度上昇とともに低下することが知
られている。参考までに純水の温度と表面張力の関係を
図１に、純水の温度と粘性率の関係を図２に示す（おも
しろい水のはなし 久保田昌治 日刊工業新聞社 １９
９４ ｐ２０６，２０９）。On the other hand, considering the physical properties of water, the surface tension, the viscosity, and the effect of thermal expansion can be considered. It is known that the surface tension of water is higher than that of other liquids, but both the surface tension and the viscosity of water decrease with increasing temperature. For reference, the relationship between the temperature of pure water and the surface tension is shown in Fig. 1, and the relationship between the temperature of pure water and the viscosity is shown in Fig. 2 (Interesting interesting water Masaharu Kubota Nikkan Kogyo Shimbun 19
94 p206, 209).
【００１７】水の表面張力や粘性が温度上昇によって低
下するとすれば、加熱の初期に複合シートの水分が加熱
されて金属多孔体の表面の微細孔内に深く浸透し、次い
で急激な加熱によって爆発的に膨張して気化し、発生し
た煤を爆発的に飛散させてその後に発生した煤の凝集を
阻止するということで説明できる。If the surface tension and viscosity of water decrease due to temperature rise, the water content of the composite sheet is heated in the initial stage of heating and deeply penetrates into the fine pores on the surface of the porous metal body, and then explodes due to rapid heating. It can be explained by the fact that the soot is expanded and vaporized, the generated soot is explosively scattered, and the soot generated thereafter is prevented from coagulating.
【００１８】いずれにしても、複合シートに水を含有さ
せて熱処理を行ったときには、現実には基材の熱分解に
よって煤が発生しても金属多孔体の表面には付着しな
い。少なくとも、熱処理後の金属多孔体表面には目視に
よって煤は観察されなかった。In any case, when water is contained in the composite sheet and heat treatment is performed, in reality, even if soot is generated due to thermal decomposition of the base material, it does not adhere to the surface of the porous metal body. At least, soot was not visually observed on the surface of the metal porous body after the heat treatment.
【００１９】[0019]
【実施例】以下に本発明の実施例を図によって説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００２０】多孔度約９５％，厚さ２．０ｍｍの発泡ポ
リウレタン樹脂シートを基材に用い、次に基材に導電塗
料を均一に塗布した後、硫酸ニッケル浴に含浸させ、電
流密度６０ｍＡ／ｃｍ2で１時間メッキを行い、基材表
面に厚さ約２５μｍのニッケルがメッキされた複合シー
トを得た。A foamed polyurethane resin sheet having a porosity of about 95% and a thickness of 2.0 mm was used as a base material, and then a conductive coating material was uniformly applied to the base material, which was then impregnated in a nickel sulfate bath to obtain a current density of 60 mA / Plating was performed at cm 2 for 1 hour to obtain a composite sheet in which the surface of the base material was plated with nickel having a thickness of about 25 μm.
【００２１】図３において、得られた複合シート１を洗
浄槽２内に浸漬し、メッキ液の水洗浄を行い、シャワー
３によって散水したままの水分を含む複合シート１を水
平姿勢に保持して加熱炉４に導入した。なお、加熱炉４
には、その入口にガス炎を発生して、炉内への空気の流
入を防止している。加熱炉４の炉内の温度は、７５０℃
程度に保った。加熱炉４内で基材を熱分解した後の金属
多孔体を引き続き、窒素ガス還元雰囲気で炉内温度８０
０℃〜１１００℃の焼鈍炉５内に導入し、さらに冷却炉
６にて金属多孔体が酸化しないように徐冷しつつ巻取り
装置７に巻き取ってシート状の金属多孔体８を得た。得
られた金属多孔体８のいずれの面にも目視によって観察
した限りでは煤の付着は全く認められなかった。また、
加熱炉に代え、図４に示すバーナ９を用い、プロパンガ
スなどの燃焼による還元炎で複合シート１を焙って基材
を焼却した例においても、得られた金属多孔体８のいず
れの面にも煤は目視では観測されなかった。In FIG. 3, the obtained composite sheet 1 is dipped in a washing tank 2 to wash the plating solution with water, and the shower head 3 holds the composite sheet 1 containing water which has been sprayed in a horizontal posture. It was introduced into the heating furnace 4. The heating furnace 4
In addition, a gas flame is generated at the inlet to prevent the inflow of air into the furnace. The temperature inside the heating furnace 4 is 750 ° C.
Kept to a degree. The porous metal body after the base material is thermally decomposed in the heating furnace 4 is continuously heated in a nitrogen gas reducing atmosphere at a furnace temperature of 80
The sheet was introduced into the annealing furnace 5 at 0 ° C to 1100 ° C, and further wound in the winding device 7 while being gradually cooled in the cooling furnace 6 so as not to oxidize the porous metal body to obtain a sheet-shaped porous metal body 8. . Soot adhesion was not observed at all on the surface of the obtained porous metal 8 as a result of visual observation. Also,
Even in an example in which the burner 9 shown in FIG. 4 is used instead of the heating furnace and the composite sheet 1 is roasted by a reducing flame by combustion of propane gas or the like to incinerate the base material, any surface of the obtained porous metal body 8 is No soot was visually observed.
【００２２】[0022]
【発明の効果】以上のように本発明によるときには、基
材に金属メッキを施した複合シートに水分を保有させた
状態で熱処理を行うことによって、煤の付着がない高品
位の金属多孔体が得られ、電池の極板の機能を充分に発
揮できる。As described above, according to the present invention, a heat treatment is carried out in a state where water is retained in a composite sheet having a base material plated with metal, whereby a high-quality porous metal body free from soot is obtained. Thus, the function of the battery electrode plate can be fully exhibited.
【００２３】また、本発明は、加熱処理の前処理として
複合シートを含水させるのみでよく、厄介な後処理は不
要となり、さらに、メッキ液の水洗浄処理を給水処理に
利用して工程をより簡略化できる効果を有する。Further, according to the present invention, it is only necessary to hydrate the composite sheet as a pretreatment for the heat treatment, and a troublesome posttreatment is not required. Furthermore, a water washing treatment of the plating solution is used for the water supply treatment to further improve the process. It has the effect of being simplified.
【図１】純水の温度と表面張力との関係を示す図であ
る。FIG. 1 is a diagram showing the relationship between the temperature of pure water and the surface tension.
【図２】純水の温度と粘性率との関係を示す図である。FIG. 2 is a diagram showing the relationship between the temperature of pure water and the viscosity.
【図３】本発明方法を実施する装置の一例を示す図であ
る。FIG. 3 is a diagram showing an example of an apparatus for carrying out the method of the present invention.
【図４】本発明方法を実施する装置の他の例を示す図で
ある。FIG. 4 is a diagram showing another example of an apparatus for carrying out the method of the present invention.
１ 複合シート ２ 洗浄槽 ３ シャワー ４ 加熱炉 ５ 焼鈍炉 ６ 冷却炉 ７ 巻取り装置 ８ 金属多孔体 ９ バーナ DESCRIPTION OF SYMBOLS 1 Composite sheet 2 Cleaning tank 3 Shower 4 Heating furnace 5 Annealing furnace 6 Cooling furnace 7 Winding device 8 Metal porous body 9 Burner
Claims (3)
金属多孔体を形成する金属多孔体の熱処理方法であっ
て、 基材は、三次元網状組織を有する熱分解性のシートであ
り、 複合シートは、基材の三次元網状組織を骨格としてその
表面に金属メッキが施されたものであり、 基材の除去処理は、水分を含有させた複合シートを加熱
処理し、基材の加熱処理によって発生する煤を金属多孔
体に付着させずに基材を消失させる処理であることを特
徴とする金属多孔体の熱処理方法。1. A method for heat-treating a porous metal body, which comprises removing a base material and forming a porous metal body from a composite sheet, wherein the base material is a thermally decomposable sheet having a three-dimensional network structure. The composite sheet has a three-dimensional network structure of the base material as a skeleton, and its surface is metal-plated. The base material is removed by heat-treating the composite sheet containing water. A heat treatment method for a porous metal body, which is a treatment for removing the base material without allowing soot generated by the heat treatment to adhere to the porous metal body.
ートに給水して水分を含有させ、引き続いて複合シート
の加熱処理を行うものであることを特徴とする請求項１
に記載の金属多孔体の熱処理方法。2. The removal treatment of the base material is performed by supplying water to the composite sheet so as to contain water as a pretreatment, and subsequently performing heat treatment of the composite sheet.
The heat treatment method for a porous metal body according to.
メッキ処理後の水洗浄処理であり、水洗浄処理によって
含水した複合シートの熱処理を行うことを特徴とする請
求項２に記載の金属多孔体の熱処理方法。3. The metal porous body according to claim 2, wherein the pretreatment for hydrating the composite sheet is a water washing treatment after the metal plating treatment, and the composite sheet hydrated by the water washing treatment is heat-treated. How to heat your body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6235068A JPH0892669A (en) | 1994-09-29 | 1994-09-29 | Heat treatment of metallic porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6235068A JPH0892669A (en) | 1994-09-29 | 1994-09-29 | Heat treatment of metallic porous body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0892669A true JPH0892669A (en) | 1996-04-09 |
Family
ID=16980599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6235068A Pending JPH0892669A (en) | 1994-09-29 | 1994-09-29 | Heat treatment of metallic porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0892669A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011241457A (en) * | 2010-05-20 | 2011-12-01 | Sumitomo Electric Ind Ltd | Highly corrosion-resistant metal porous body |
| WO2014192645A1 (en) * | 2013-05-31 | 2014-12-04 | 住友電気工業株式会社 | Production method for porous aluminum body, porous aluminum body, current collector, electrode, and electrochemical device |
| WO2015087948A1 (en) * | 2013-12-12 | 2015-06-18 | 住友電気工業株式会社 | Carbon material-coated metal porous body, collector, electrode, and power storage device |
| DE112012004821B4 (en) | 2011-12-06 | 2019-02-28 | Hitachi High-Technologies Corporation | Scanning ion microscope and secondary particle control method |
-
1994
- 1994-09-29 JP JP6235068A patent/JPH0892669A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011241457A (en) * | 2010-05-20 | 2011-12-01 | Sumitomo Electric Ind Ltd | Highly corrosion-resistant metal porous body |
| US8377567B2 (en) | 2010-05-20 | 2013-02-19 | Sumitomo Electric Industries, Ltd. | Highly corrosion-resistant porous metal member |
| DE112012004821B4 (en) | 2011-12-06 | 2019-02-28 | Hitachi High-Technologies Corporation | Scanning ion microscope and secondary particle control method |
| WO2014192645A1 (en) * | 2013-05-31 | 2014-12-04 | 住友電気工業株式会社 | Production method for porous aluminum body, porous aluminum body, current collector, electrode, and electrochemical device |
| JP2014234531A (en) * | 2013-05-31 | 2014-12-15 | 住友電気工業株式会社 | Production method of aluminum porous body, aluminum porous body, collector, electrode, and electrochemical device |
| CN105247084A (en) * | 2013-05-31 | 2016-01-13 | 住友电气工业株式会社 | Method for producing aluminum porous body, aluminum porous body, current collector, electrode, and electrochemical device |
| WO2015087948A1 (en) * | 2013-12-12 | 2015-06-18 | 住友電気工業株式会社 | Carbon material-coated metal porous body, collector, electrode, and power storage device |
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