US20080118385A1 - Method for manufacturing open cell microporous metal - Google Patents
Method for manufacturing open cell microporous metal Download PDFInfo
- Publication number
- US20080118385A1 US20080118385A1 US11/675,574 US67557407A US2008118385A1 US 20080118385 A1 US20080118385 A1 US 20080118385A1 US 67557407 A US67557407 A US 67557407A US 2008118385 A1 US2008118385 A1 US 2008118385A1
- Authority
- US
- United States
- Prior art keywords
- melting point
- open cell
- compact
- metal
- low melting
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1146—After-treatment maintaining the porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Definitions
- the present invention relates to an open cell porous metal, and, more particularly, to a method of manufacturing an open cell porous metal, in which open cell pores are more easily formed in a target metal which is to be prepared for various uses, and in which the shape or structure of the pores can be variously adjusted.
- a porous metal has a plurality of micropores formed therein or thereon.
- Such porous metal includes an open cell porous metal, the pores of which communicate with the exterior, and a closed cell porous metal, the pores of which are sealed, depending on the form of the pore.
- porous metal Since this porous metal has open cell pores or closed cell pores formed therein, the porous metal has been variously used in heat exchangers, aircraft, shock absorbers, fragrance retention, and the like.
- an object of the present invention is to provide a method of manufacturing an open cell porous metal, in which open cell micropores are more easily formed, and in which the shape or structure of the micropores can be more easily adjusted.
- the present invention provides a method of manufacturing an open cell porous metal, including the steps of mixing a target metal with a low melting point material that has a melting point lower than that of the target metal to form a mixture; forming a compact by pressurizing the mixture; forming a sintered compact, in which open cell micropores are formed, by sintering and polishing the compact; and plating the sintered compact.
- the method is characterized in that the mixing ratio of the target metal to the low melting point material ranges from 7:3 to 9.95:0.05.
- the method is characterized in that the low melting point material has a melting point of 200 ⁇ 600° C.
- the method is characterized in that, in the step of sintering, the open cell micropores are formed in the compact by melting only the low melting point material.
- the method is characterized in that, in the step of sintering, the low melting point material is melted at a temperature of 200 ⁇ 3500° C. in an ammonia cracking reductive atmosphere or a vacuum atmosphere.
- the method is characterized in that, in the step of plating, a corrosion inhibition film is formed using a dry plating method.
- the method of manufacturing a porous metal according to the present invention has advantages in that pores are easily formed, porosity is remarkably increased, and the form or structure of the pores can be variously adjusted.
- the open cell porous metal manufactured by the present invention has an advantage in that the open cell porous metal has various effects or characteristics such as durability, sound-absorption, heat resistance, electromagnetic wave blocking, high damping, high strength, ultra-lightweight, fragrance emission, fragrance retention and the like, and can be thus used as a functional metal for realizing various uses or purposes.
- FIG. 1 is a flow chart showing a method of manufacturing an open cell porous metal according to an embodiment of the present invention
- FIG. 2 is a view sequentially showing a method of manufacturing an open cell porous metal according to an embodiment of the present invention.
- FIG. 3 is a photograph and an enlarged view showing the open cell porous metal manufactured by the present invention.
- FIG. 1 is flow chart showing a method of manufacturing a porous metal according to the present invention.
- a target metal 10 such as gold, silver, titanium, stainless steel, aluminum, copper or tungsten
- a low melting point material 15 having a melting point lower than that of the target metal 10 (S 1 ).
- the low melting point material 15 may be uniformly distributed in the target metal 10 .
- the target metal 10 and the low melting point material 15 may be mixed in the form of powder or chips. In this case, it is preferred that the mixing ratio of the target metal to the low melting material be within the range from 7:3 to 9.95:0.05 depending on the desired porosity (S 1 ).
- the mixture obtained in S 1 is formed into a compact having an exterior form corresponding to the use thereof through a pressurization process. It is preferred that this process of forming a compact be performed at room temperature (S 2 ).
- the compact formed in a desired shape in S 2 is solidified to have a desired strength.
- impurities such as carbon etc. may be removed from the compact.
- the solidified compact is sintered in order to form pores by taking advantage of the difference in melting point between the target metal 10 and the low melting point material 20 (S 3 ).
- a plurality of micropores 20 can be variously formed in the form of open cells by melting only the low melting point material 15 in the target metal 10 , as shown in FIGS. 2A and 2B .
- the open cell micropores 20 are formed by discharging the low melting point material 15 through gaps in the target metal 10 during an evaporation process or an extraction process.
- micropores 20 can be variously adjusted depending on whether the low melting point material 15 is in chip or powder form, on the state of the low melting point material 15 , and the like.
- a high melting point metal having a relatively high melting point such as gold (melting point: 1063° C.), silver (melting point: 962° C.), titanium (melting point: 2850° C.), stainless steel (melting point: 1400° C.), aluminum (melting point: 659° C.), copper (melting point: 1530° C.), tungsten (melting point: 3500° C.) or the like, is mainly used as the target metal 10 .
- a material having a relatively low melting point from 200° C. to 600° C. such as tin (melting point: 232° C.), zinc (melting point: 419° C.) or the like, is mainly used as the low melting point material.
- the sintering process be performed at a sintering temperature of 200 ⁇ 3500° C. in an ammonia cracking atmosphere or a vacuum atmosphere (S 3 ).
- the sintered compact formed through the sintering process in S 3 is polished in order to smooth the surface of the compact (S 4 ). After this polishing process is performed, the porous metal of the present invention has a porosity of about 5 ⁇ 70%.
- a corrosion inhibition film is plated on the surface of the sintered compact, polished in S 4 and the surface of the micropores (S 5 ).
- This plating process (S 5 ) is characterized in that the micropores are not blocked and the inner walls thereof are precisely plated by employing dry plating, such as vacuum ion plating.
- an ultrasonic cleaning process Prior to the plating process (S 5 ), an ultrasonic cleaning process, an acid cleaning process, a water separation process and a drying process are performed. Then, the corrosion inhibition film is applied on the surface of the porous metal and the inner wall of the micropores through this plating process (S 5 ).
- the plated compact may be immersed in a fragrance emission material which emits a desired fragrance, or the fragrance emission material may be charged between the pores by exposing the plated compact to a high-pressure controlled fragrance emission material-laden atmosphere. Since this process of charging the fragrance emission material can be repeatedly performed after most of the fragrance has been emitted and the concentration thereof is thus low, the fragrance can be emitted semipermanently.
- the low melting point materials, located between the target metals 10 are discharged by evaporation or extraction in the sintering process, thereby forming pores 20 .
- the pores 20 in FIG. 3 unlike conventional technologies, are spaces charged with the low melting point metals, the sizes of the pores are larger than those of pores formed by alloying metals having melting points similar to each other. Accordingly, the porosity of the porous metal is also increased. That is, in the present invention, the pores of porous metal are easily formed in precious metals using the low melting point metals, and the porosity thereof can thus be remarkably increased.
Abstract
Disclosed is a method of manufacturing an open cell porous metal, including the steps of mixing a target metal with a low melting point material, having a melting point lower than that of the target metal, to form a mixture; forming a compact by pressurizing the mixture; forming a sintered compact, which open cell micropores are formed, by sintering and polishing the compact; and plating the sintered compact. The present invention has advantages in that pores are easily formed, and the form of the pores can be variously adjusted. Further, the open cell porous metal manufactured by the present invention has an advantage in that the open cell porous metal has various effects or characteristics such as durability, sound-absorbing property, heat resistance, electromagnetic wave blocking, high damping property, high strength, ultra-lightweight, fragrance emission, and fragrance retention, and can thus be used as a functional metal for various uses.
Description
- Applicant claims foreign priority under Paris Convention and 35 U.S.C. §119 to Korean Patent Application No. 10-2006-0114871, filed on Nov. 21, 2006, and to Korean Patent Application No. 10-2006-0131483, filed on Dec. 21, 2006, each with the Korean Intellectual Property Office.
- The present invention relates to an open cell porous metal, and, more particularly, to a method of manufacturing an open cell porous metal, in which open cell pores are more easily formed in a target metal which is to be prepared for various uses, and in which the shape or structure of the pores can be variously adjusted.
- As commonly known, a porous metal has a plurality of micropores formed therein or thereon. Such porous metal includes an open cell porous metal, the pores of which communicate with the exterior, and a closed cell porous metal, the pores of which are sealed, depending on the form of the pore.
- Since this porous metal has open cell pores or closed cell pores formed therein, the porous metal has been variously used in heat exchangers, aircraft, shock absorbers, fragrance retention, and the like.
- However, conventional methods of manufacturing the porous metal have problems in that it is difficult to adjust the form of pores, and in that the range of metals in which pores can be formed is limited (for example, use of only metal such as stainless steel is allowed).
- Accordingly, the present invention has been made in order to solve the above problems occurring in the prior art, and an object of the present invention is to provide a method of manufacturing an open cell porous metal, in which open cell micropores are more easily formed, and in which the shape or structure of the micropores can be more easily adjusted.
- In order to accomplish the above object, the present invention provides a method of manufacturing an open cell porous metal, including the steps of mixing a target metal with a low melting point material that has a melting point lower than that of the target metal to form a mixture; forming a compact by pressurizing the mixture; forming a sintered compact, in which open cell micropores are formed, by sintering and polishing the compact; and plating the sintered compact.
- The method is characterized in that the mixing ratio of the target metal to the low melting point material ranges from 7:3 to 9.95:0.05.
- The method is characterized in that the low melting point material has a melting point of 200˜600° C.
- The method is characterized in that, in the step of sintering, the open cell micropores are formed in the compact by melting only the low melting point material.
- The method is characterized in that, in the step of sintering, the low melting point material is melted at a temperature of 200˜3500° C. in an ammonia cracking reductive atmosphere or a vacuum atmosphere.
- The method is characterized in that, in the step of plating, a corrosion inhibition film is formed using a dry plating method.
- As described above, the method of manufacturing a porous metal according to the present invention has advantages in that pores are easily formed, porosity is remarkably increased, and the form or structure of the pores can be variously adjusted.
- Further, the open cell porous metal manufactured by the present invention has an advantage in that the open cell porous metal has various effects or characteristics such as durability, sound-absorption, heat resistance, electromagnetic wave blocking, high damping, high strength, ultra-lightweight, fragrance emission, fragrance retention and the like, and can be thus used as a functional metal for realizing various uses or purposes.
-
FIG. 1 is a flow chart showing a method of manufacturing an open cell porous metal according to an embodiment of the present invention; -
FIG. 2 is a view sequentially showing a method of manufacturing an open cell porous metal according to an embodiment of the present invention; and -
FIG. 3 is a photograph and an enlarged view showing the open cell porous metal manufactured by the present invention. - Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
-
FIG. 1 is flow chart showing a method of manufacturing a porous metal according to the present invention. - As shown in
FIG. 1 , in the method of manufacturing a porous metal according to the present invention, atarget metal 10, such as gold, silver, titanium, stainless steel, aluminum, copper or tungsten, is suitably mixed with a lowmelting point material 15 having a melting point lower than that of the target metal 10 (S1). Particularly, the lowmelting point material 15 may be uniformly distributed in thetarget metal 10. Here, thetarget metal 10 and the lowmelting point material 15 may be mixed in the form of powder or chips. In this case, it is preferred that the mixing ratio of the target metal to the low melting material be within the range from 7:3 to 9.95:0.05 depending on the desired porosity (S1). - Next, the mixture obtained in S1 is formed into a compact having an exterior form corresponding to the use thereof through a pressurization process. It is preferred that this process of forming a compact be performed at room temperature (S2).
- The compact formed in a desired shape in S2 is solidified to have a desired strength. Here, impurities such as carbon etc. may be removed from the compact.
- Then, the solidified compact is sintered in order to form pores by taking advantage of the difference in melting point between the
target metal 10 and the low melting point material 20 (S3). - In this sintering process, a plurality of
micropores 20 can be variously formed in the form of open cells by melting only the lowmelting point material 15 in thetarget metal 10, as shown inFIGS. 2A and 2B . - That is, as shown in
FIG. 2A , when only the lowmelting point material 15 is melted in a state in which the lowmelting point material 15 is mixed in thetarget metal 10 in the form of powder or chips, as shown inFIG. 2B , theopen cell micropores 20 are formed by discharging the lowmelting point material 15 through gaps in thetarget metal 10 during an evaporation process or an extraction process. - The shape or structure of
such micropores 20 can be variously adjusted depending on whether the lowmelting point material 15 is in chip or powder form, on the state of the lowmelting point material 15, and the like. - Meanwhile, a high melting point metal having a relatively high melting point, such as gold (melting point: 1063° C.), silver (melting point: 962° C.), titanium (melting point: 2850° C.), stainless steel (melting point: 1400° C.), aluminum (melting point: 659° C.), copper (melting point: 1530° C.), tungsten (melting point: 3500° C.) or the like, is mainly used as the
target metal 10. Further, a material having a relatively low melting point from 200° C. to 600° C., such as tin (melting point: 232° C.), zinc (melting point: 419° C.) or the like, is mainly used as the low melting point material. - Accordingly, it is preferred that the sintering process be performed at a sintering temperature of 200˜3500° C. in an ammonia cracking atmosphere or a vacuum atmosphere (S3).
- The sintered compact formed through the sintering process in S3 is polished in order to smooth the surface of the compact (S4). After this polishing process is performed, the porous metal of the present invention has a porosity of about 5˜70%.
- Meanwhile, metals corrode due to the diffusion of oxygen contacting the surface of the metal or the diffusion of the metal itself. Open cell micropores can be blocked due to this corrosion of metal. Accordingly, in the present invention, a corrosion inhibition film is plated on the surface of the sintered compact, polished in S4 and the surface of the micropores (S5).
- This plating process (S5) is characterized in that the micropores are not blocked and the inner walls thereof are precisely plated by employing dry plating, such as vacuum ion plating.
- Prior to the plating process (S5), an ultrasonic cleaning process, an acid cleaning process, a water separation process and a drying process are performed. Then, the corrosion inhibition film is applied on the surface of the porous metal and the inner wall of the micropores through this plating process (S5).
- After this plating process (S5) is completed, various post-treatments may be performed according to the use of the porous metal. In these post-treatments, the plated compact may be immersed in a fragrance emission material which emits a desired fragrance, or the fragrance emission material may be charged between the pores by exposing the plated compact to a high-pressure controlled fragrance emission material-laden atmosphere. Since this process of charging the fragrance emission material can be repeatedly performed after most of the fragrance has been emitted and the concentration thereof is thus low, the fragrance can be emitted semipermanently.
- As shown in
FIG. 3 , in the present invention, it can be seen that the low melting point materials, located between thetarget metals 10, are discharged by evaporation or extraction in the sintering process, thereby formingpores 20. - Since the
pores 20 inFIG. 3 , unlike conventional technologies, are spaces charged with the low melting point metals, the sizes of the pores are larger than those of pores formed by alloying metals having melting points similar to each other. Accordingly, the porosity of the porous metal is also increased. That is, in the present invention, the pores of porous metal are easily formed in precious metals using the low melting point metals, and the porosity thereof can thus be remarkably increased.
Claims (6)
1. A method of manufacturing an open cell porous metal, comprising the steps of:
mixing a target metal with a low melting point material having a melting point lower than that of the target metal to form a mixture;
forming a compact by pressurizing the mixture;
forming a sintered compact, in which open cell micropores are formed, by sintering and polishing the compact; and
plating the sintered compact.
2. The method according to claim 1 , wherein a mixing ratio of the target metal to the low melting point material ranges from 7:3 to 9.95:0.05.
3. The method according to claim 1 , wherein the low melting point material has a melting point of 200˜600° C.
4. The method according to claim 1 , wherein, in the step of sintering, the open cell micropores are formed in the compact by melting only the low melting point material.
5. The method according to claim 4 , wherein, in the step of sintering, the low melting point material is melted at a temperature of 200˜3500° C. in an ammonia cracking reductive atmosphere or a vacuum atmosphere.
6. The method according to claim 1 , wherein, in the step of plating, a corrosion inhibition film is plated using a dry plating method.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0114871 | 2006-11-21 | ||
KR20060114871 | 2006-11-21 | ||
KR10-2006-0131483 | 2006-12-21 | ||
KR20060131483 | 2006-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080118385A1 true US20080118385A1 (en) | 2008-05-22 |
Family
ID=39417138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/675,574 Abandoned US20080118385A1 (en) | 2006-11-21 | 2007-02-15 | Method for manufacturing open cell microporous metal |
Country Status (2)
Country | Link |
---|---|
US (1) | US20080118385A1 (en) |
WO (1) | WO2008062925A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120141670A1 (en) * | 2010-08-10 | 2012-06-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Open-porous metal foam body and a method for fabricating the same |
US20120168713A1 (en) * | 2009-09-03 | 2012-07-05 | Korea Research Institute Of Standards And Science | Method for manufacturing a silicon nanowire array using a porous metal film |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112662908B (en) * | 2021-01-04 | 2023-09-12 | 云南迈特力医疗技术有限公司 | Preparation device and method of porous low-melting-point metal exoskeleton |
CN114055343A (en) * | 2021-10-29 | 2022-02-18 | 南京旭羽睿材料科技有限公司 | Intelligent manufacturing equipment and manufacturing method for metal material surface microporous structure |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3052967A (en) * | 1959-09-14 | 1962-09-11 | Gen Electric | Porous metallic material and method |
US3087807A (en) * | 1959-12-04 | 1963-04-30 | United Aircraft Corp | Method of making foamed metal |
US3852045A (en) * | 1972-08-14 | 1974-12-03 | Battelle Memorial Institute | Void metal composite material and method |
US20030165731A1 (en) * | 2002-03-01 | 2003-09-04 | Gayatri Vyas | Coated fuel cell electrical contact element |
US6660224B2 (en) * | 2001-08-16 | 2003-12-09 | National Research Council Of Canada | Method of making open cell material |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0699771B2 (en) * | 1986-02-14 | 1994-12-07 | 本田技研工業株式会社 | Aluminum alloy porous member and method for manufacturing the same |
JPS6362802A (en) * | 1986-09-03 | 1988-03-19 | Nippon Tungsten Co Ltd | Porous metallic sintered body |
JPH1046209A (en) * | 1996-07-25 | 1998-02-17 | Ndc Co Ltd | Production of porous aluminum green compact |
JP2003171703A (en) * | 2001-12-03 | 2003-06-20 | Toyota Industries Corp | Porous sintered compact and its manufacturing method |
-
2007
- 2007-01-04 WO PCT/KR2007/000060 patent/WO2008062925A1/en active Application Filing
- 2007-02-15 US US11/675,574 patent/US20080118385A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3052967A (en) * | 1959-09-14 | 1962-09-11 | Gen Electric | Porous metallic material and method |
US3087807A (en) * | 1959-12-04 | 1963-04-30 | United Aircraft Corp | Method of making foamed metal |
US3852045A (en) * | 1972-08-14 | 1974-12-03 | Battelle Memorial Institute | Void metal composite material and method |
US6660224B2 (en) * | 2001-08-16 | 2003-12-09 | National Research Council Of Canada | Method of making open cell material |
US20030165731A1 (en) * | 2002-03-01 | 2003-09-04 | Gayatri Vyas | Coated fuel cell electrical contact element |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120168713A1 (en) * | 2009-09-03 | 2012-07-05 | Korea Research Institute Of Standards And Science | Method for manufacturing a silicon nanowire array using a porous metal film |
US20120141670A1 (en) * | 2010-08-10 | 2012-06-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Open-porous metal foam body and a method for fabricating the same |
Also Published As
Publication number | Publication date |
---|---|
WO2008062925A1 (en) | 2008-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1759025B1 (en) | method for manufacturing an open porous metallic foam body | |
US7531215B2 (en) | Hydrogen transport membrane fabrication method | |
US20080118385A1 (en) | Method for manufacturing open cell microporous metal | |
CZ2002904A3 (en) | Mixture of two powder phases for producing half-finished products that can be sintered at higher temperatures | |
JPS6020868B2 (en) | Method for manufacturing porous electrodes for chemical batteries | |
US8226861B2 (en) | Filter casting nanoscale porous materials | |
CN109989049A (en) | A kind of porous metal material and preparation method thereof with hole-closing structure | |
Chen et al. | Effect of the particle size of 316L stainless steel on the corrosion characteristics of the steel fabricated by selective laser melting | |
KR101061981B1 (en) | Metal porous body, porous insoluble electrode for water treatment and electroplating, and preparation method thereof | |
EP1917116B1 (en) | Calcinated or sintered hollow body comprising a spherically curved surface | |
CN108883997B (en) | Monolithic substrate and method for producing same | |
JPH07106289B2 (en) | Metal filter manufacturing method | |
US7968207B2 (en) | Method of producing and joining superalloy balls by means of brazing and objects produced with such joints | |
JP4705222B2 (en) | Method for producing porous plate material | |
WO2015028738A1 (en) | Material for priming a metal substrate of a ceramic catalyst material | |
RU2006100783A (en) | METHOD FOR PRODUCING HIGH POROUS NICKEL AND ITS ALLOYS | |
JP2001329380A5 (en) | ||
JPS5819407A (en) | Manufacture of porous sintered body | |
CN108479411B (en) | Porous film blank, precursor and preparation method | |
US20100151224A1 (en) | Method for partially coating open cell porous materials | |
JP2018053312A (en) | Porous aluminum sintered compact and method for producing the same | |
JP2008007811A (en) | Method for manufacturing metal porous body | |
JP2006224114A (en) | Member for molten metal and producing method therefor | |
KR101689387B1 (en) | Method for manufacturing metallic substrate having metal foam layer on the surface and metallic substrate manufactured thereby | |
JP2004183055A (en) | Porous liquid absorbing-holding member, and alcohol absorbing-holding member |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |