JPH04165006A - Manufacture of metallic porous body - Google Patents
Manufacture of metallic porous bodyInfo
- Publication number
- JPH04165006A JPH04165006A JP28845690A JP28845690A JPH04165006A JP H04165006 A JPH04165006 A JP H04165006A JP 28845690 A JP28845690 A JP 28845690A JP 28845690 A JP28845690 A JP 28845690A JP H04165006 A JPH04165006 A JP H04165006A
- Authority
- JP
- Japan
- Prior art keywords
- porous body
- pores
- metallic porous
- rolling
- forming
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 229920000914 Metallic fiber Polymers 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 2
- 208000007542 Paresis Diseases 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 208000012318 pareses Diseases 0.000 abstract 1
- 239000000463 material Substances 0.000 description 17
- 239000012530 fluid Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は金属多孔体の製造方法に関し、特に液体及び気
体内の微粒子を除去するフィルタ並びに機能性皮膜を形
成する支持体として、有利に適用しうる同多孔体の製造
法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for producing a porous metal body, and is particularly applicable to a filter for removing particulates in liquids and gases, and a support for forming a functional film. The present invention relates to a method for producing the same porous material.
従来の金属多孔体は金属繊維を板状、又は管状に成形後
焼結、又はその後圧延して製造されていた。しかしなが
ら、このような圧延処理を施しても得られた製品には１
０μｍ程度の大きな表面細孔が存在している。Conventional metal porous bodies have been manufactured by forming metal fibers into a plate or tube shape and then sintering or rolling them. However, even after such rolling treatment, the resulting product has 1
Large surface pores of about 0 μm are present.
ところで従来の金属繊維を板状又は管状に成形後焼結又
はその後圧延して製造した金属多孔体は前述したように
、ｌＯμｍ程度の表面細孔が存在しておシ、その几め圧
延処理を多数回施すことによって表面細孔を全体的に小
さくすることは可能であるが、゛それによって内部の細
孔も小さくなシ、流体などの透過抵抗が増大し、更には
流体などを透過させるに必要な圧力によって形状にもよ
るが金属多孔体を破損する欠点があった。By the way, as mentioned above, conventional porous metal bodies manufactured by forming metal fibers into plate or tube shapes and then sintering or rolling them have surface pores of about 10 μm, and it is necessary to perform a careful rolling process. Although it is possible to make the surface pores smaller overall by applying it multiple times, it also makes the internal pores smaller, increases the resistance to permeation of fluids, and makes it difficult for fluids to pass through. The disadvantage was that the required pressure could damage the porous metal body, depending on the shape.
本発明は上記技術水準に鑑み、従来法におけるような欠
点のない表面細孔の小さい金属多孔体を製造し得る方法
を提供しようとするものである。In view of the above-mentioned state of the art, the present invention aims to provide a method for producing a metal porous body with small surface pores, which does not have the drawbacks of conventional methods.
このため本発明の金属多孔体の製造方法は、ステンレス
鋼などの金属細線の集合体を板状又は管状に成形したの
ち、これを焼結・圧延してなる金属多孔体の表面細孔部
に酸化鉄粉末を充填し、しかる後に水素雰囲気中で還元
処理したこを特徴としている。For this reason, the method for manufacturing a porous metal body of the present invention involves forming an aggregate of thin metal wires such as stainless steel into a plate or tube shape, and then sintering and rolling this to form the pores on the surface of the porous metal body. It is characterized by being filled with iron oxide powder and then subjected to reduction treatment in a hydrogen atmosphere.
液体及び気体内の微粒子を除去するフィルタ並びに機能
性皮膜を形成する支持体として有利に適用できる金属多
孔体は、流体などの透過抵抗の増大を抑制するために、
更には、又機能性皮膜用支持体として有利に使用するた
めには、焼結・圧延にて得たｌＯμｍ程度の細孔径が存
在する金属多孔体の片側外表面のみ即ち、流体などが入
る極く表面細孔のみを小さくすればよいとの知見を得た
ので、上記処理を可能にするためステンレス鋼などの細
い金属繊維を板状又は管状に成形後、これを焼結又はそ
の後の圧延によって製造した金属多孔体の片面のみの細
孔径内に酸化鉄を充填し、この金属多孔体″ｆ：Ｈ，雰
囲気中で還元処理することにより、充填された酸化鉄は
、
ＦｅｅＯｓ 十３Ｈ，−＋ ２Ｆｅ ＋３ＨｔＯの反応
により、Ｆｅに還元され重量割合で約１／３゜体積割合
で約１／２に減少し、この時、酸化鉄内に微小な細孔が
形成される。Porous metal bodies, which can be advantageously applied as filters for removing particulates in liquids and gases, and supports for forming functional films, can suppress increases in permeation resistance of fluids, etc.
Furthermore, in order to advantageously use it as a support for a functional film, it is necessary to use only the outer surface of one side of the porous metal body obtained by sintering and rolling and having a pore diameter of about 10 μm, that is, the pole where fluid etc. can enter. In order to make the above process possible, thin metal fibers such as stainless steel are formed into a plate or tube shape, which is then sintered or rolled by subsequent rolling. The pore diameter of only one side of the produced metal porous body is filled with iron oxide, and this metal porous body is subjected to a reduction treatment in an atmosphere of "f:H", so that the filled iron oxide becomes FeeOs 13H,-+ By the reaction of 2Fe + 3HtO, it is reduced to Fe, and the weight ratio is reduced to about 1/3 degree, and the volume ratio is reduced to about 1/2. At this time, minute pores are formed in the iron oxide.
その結果表層部にのみ微細な細孔径を有する金属多孔体
が得られる。これにより流体などの透過抵抗の増大を抑
制でき透過圧力による破損を防止できる。As a result, a porous metal body having fine pore diameters only in the surface layer is obtained. This can suppress an increase in resistance to permeation of fluid, etc., and prevent damage due to permeation pressure.
以下本発明の１実施例について説明する。 One embodiment of the present invention will be described below.
線径８μｍ、材質ＳＵＳ ３１６の金属繊維を焼結・圧
延して得た平均１０μｍ程度の細孔を有する金属多孔体
板素材の表面に水との混練り状態の酸化鉄Ｆｅ５ｏｓ
（平均粒径５μｍ）ｔ−すシ込みその後水素中にて還元
処理（６００℃加熱）を行った。Iron oxide Fe5os mixed with water is placed on the surface of a metal porous plate material having pores of an average of about 10 μm obtained by sintering and rolling metal fibers of SUS 316 with a wire diameter of 8 μm.
(Average particle size: 5 μm) After t-sinking, reduction treatment (heating at 600° C.) was performed in hydrogen.
金属多孔体板素材及び本発明による処理材並びに金属多
孔体素材を更に圧延し微細孔とした３種類の材料につい
て、室温での空気の透過流量と圧力降下の関係を測定し
、その結果を第１図に示す。The relationship between air permeation flow rate and pressure drop at room temperature was measured for three types of materials: a porous metal plate material, a treated material according to the present invention, and a porous metal material with micropores formed by further rolling. Shown in Figure 1.
又、上記３種類について走査型電子顕微鏡により表面観
察を実施し求めた表面細孔径分布測定結果を第２図に示
す。第２図（ａ） ｉｄ本発明処理材、（ｂ）は素材に
更に圧延を施したもの、（Ｃ）は素材の場合である。Further, FIG. 2 shows the results of surface pore size distribution measurements obtained by observing the surfaces of the three types mentioned above using a scanning electron microscope. FIG. 2(a) shows a material treated according to the present invention, FIG. 2(b) shows a material obtained by further rolling the material, and FIG. 2(C) shows a material obtained by further rolling.
更には、金属多孔体素材及び本発明による処理材の２種
類の材料についてＮｉ電気めっき処理を行い、表面細孔
が封孔できるめっき厚さを求めた。Furthermore, Ni electroplating was performed on two types of materials, the porous metal material and the treated material according to the present invention, and the plating thickness that could seal the surface pores was determined.
その結果を第３図に示す。The results are shown in FIG.
これらの図から次のようなことが判明した。The following findings were found from these figures.
（１）第１図に示すように、本発明処理材のガス透 ４
過抵抗（圧力降下量）は金属多孔体素材とほぼ同等の値
を示すが、素材十圧延によって得た材料はガス透過抵抗
が非常に大きい。(1) As shown in Fig. 1, the gas permeability of the treated material of the present invention 4
Although the overresistance (pressure drop amount) is almost the same as that of the porous metal material, the material obtained by rolling the material ten times has a very high gas permeation resistance.
（２）第２図に示すように、本発明処理材及び素材十圧
延によって得た材料の表面細孔径は全体的に小さくなっ
ておシ、はぼ同等の値を示す。(2) As shown in FIG. 2, the surface pore diameters of the material treated according to the present invention and the material obtained by rolling the material are generally smaller and have approximately the same value.
（３）第３図に示すように、封孔可能なめっき厚さは金
属多孔体素材では約１６μｍであるのに対し本発明処理
材では約８μｍである。(3) As shown in FIG. 3, the plating thickness that can be sealed is about 16 μm for the porous metal material, whereas it is about 8 μm for the treated material of the present invention.
（４） これらの結果より本発明処理法の適用によシ
表面細孔径のみを小さくシ、同時にガス透過抵抗の増大
を抑制できる効果がある。(4) These results show that by applying the treatment method of the present invention, only the surface pore diameter can be reduced, and at the same time, an increase in gas permeation resistance can be suppressed.
以上述べたように本発明の金属多孔体の製造方法によれ
ば、１０μｍ程度の細孔径が存在する金属多孔体の片側
外表面のみすなわち流体などが入る極く表面細孔のみを
小さくできたことに工す、流体などの透過抵抗の増大を
抑制でき透過圧力による金属多孔体の破損を防止できる
。As described above, according to the method for producing a porous metal body of the present invention, only the outer surface of one side of the porous metal body where pore diameters of about 10 μm exist, that is, only the extremely surface pores into which fluid etc. can be made small. This makes it possible to suppress the increase in permeation resistance of fluids, etc., and prevent damage to the metal porous body due to permeation pressure.
第１図は、本発明の１実施例発明の詳細な説明するため
の空気透過流量と圧力低下の関係図、第２図は走査型電
子顕微鏡よシ求めた表面細孔径分布の測定結果図、第３
図ＦｉＮｉ電気めっきにより求めた封孔可能なめっき厚
さを示す説明図である。
Ｆｆ−力 Ｐ′ケ−２
（ａ、） 制御
イＫｔＤ？ｍｌＬギ＊ｕｔｔ’ｐｔ）FIG. 1 is a diagram showing the relationship between air permeation flow rate and pressure drop for detailed explanation of one embodiment of the present invention, and FIG. 2 is a diagram showing the measurement results of surface pore size distribution obtained using a scanning electron microscope. Third
FIG. 2 is an explanatory diagram showing the plating thickness that can be sealed by FiNi electroplating. Ff-Force P'K-2 (a,) Control I KtD? mlLgi*utt'pt)
Claims (1)
管状に成形したのち、これを焼結・圧延してなる金属多
孔体の表面細孔部に酸化鉄粉末を充填し、しかる後に水
素雰囲気中で還元処理したことを特徴とする金属多孔体
の製造方法。(1) After forming an aggregate of thin metal wires such as stainless steel into a plate or tube shape, sintering and rolling the resulting metal porous body, the surface pores are filled with iron oxide powder, and then hydrogen A method for producing a porous metal body, characterized by carrying out a reduction treatment in an atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28845690A JPH04165006A (en) | 1990-10-29 | 1990-10-29 | Manufacture of metallic porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28845690A JPH04165006A (en) | 1990-10-29 | 1990-10-29 | Manufacture of metallic porous body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04165006A true JPH04165006A (en) | 1992-06-10 |
Family
ID=17730447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28845690A Pending JPH04165006A (en) | 1990-10-29 | 1990-10-29 | Manufacture of metallic porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04165006A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197251B1 (en) | 1996-07-29 | 2001-03-06 | Matsushita Electric Industrial Co., Ltd. | Porous metal material, and method for manufacturing same |
| US6979517B2 (en) | 2000-04-28 | 2005-12-27 | Matsushita Electric Industrial Co., Ltd. | Electrode plate for cell and method for manufacturing the same |
| CN1299808C (en) * | 2005-03-03 | 2007-02-14 | 上海一鸣过滤技术有限公司 | Tubular reducing stainlss steel micro porous film and its preparing method |
| CN110699588A (en) * | 2019-10-11 | 2020-01-17 | 武汉桂坤科技有限公司 | Method for directly preparing thin strip steel from iron oxide |
| CN113618063A (en) * | 2021-08-02 | 2021-11-09 | 武汉理工大学 | Novel metal-based composite foam material with through holes and preparation method thereof |
-
1990
- 1990-10-29 JP JP28845690A patent/JPH04165006A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197251B1 (en) | 1996-07-29 | 2001-03-06 | Matsushita Electric Industrial Co., Ltd. | Porous metal material, and method for manufacturing same |
| US6979517B2 (en) | 2000-04-28 | 2005-12-27 | Matsushita Electric Industrial Co., Ltd. | Electrode plate for cell and method for manufacturing the same |
| CN1299808C (en) * | 2005-03-03 | 2007-02-14 | 上海一鸣过滤技术有限公司 | Tubular reducing stainlss steel micro porous film and its preparing method |
| CN110699588A (en) * | 2019-10-11 | 2020-01-17 | 武汉桂坤科技有限公司 | Method for directly preparing thin strip steel from iron oxide |
| CN113618063A (en) * | 2021-08-02 | 2021-11-09 | 武汉理工大学 | Novel metal-based composite foam material with through holes and preparation method thereof |
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