US20130302636A1 - Porous metal article and about method for manufacturing same - Google Patents
Porous metal article and about method for manufacturing same Download PDFInfo
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- US20130302636A1 US20130302636A1 US13/942,233 US201313942233A US2013302636A1 US 20130302636 A1 US20130302636 A1 US 20130302636A1 US 201313942233 A US201313942233 A US 201313942233A US 2013302636 A1 US2013302636 A1 US 2013302636A1
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title description 8
- 238000004519 manufacturing process Methods 0.000 title description 7
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 239000011575 calcium Substances 0.000 claims abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 24
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052762 osmium Inorganic materials 0.000 claims description 5
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 31
- 239000011248 coating agent Substances 0.000 description 30
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 239000003792 electrolyte Substances 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- 229910021426 porous silicon Inorganic materials 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 239000001117 sulphuric acid Substances 0.000 description 6
- 235000011149 sulphuric acid Nutrition 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 108091092889 HOTTIP Proteins 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- -1 dirt Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12479—Porous [e.g., foamed, spongy, cracked, etc.]
Definitions
- the exemplary disclosure generally relates to porous metal articles and methods for manufacturing the porous metal articles.
- Noble metals such as ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold, are resistant to corrosion and oxidation in moist air. Therefore these materials can be used as accelerators for purifying exhaust gas.
- the accelerating function of the noble metals is much related to their surfaces.
- a typical way to improve the accelerating function of the noble metals, is introducing porous holes in their surfaces. However, porous holes in noble metals surfaces may still result.
- the FIGURE illustrates a cross-sectional view of an exemplary embodiment of an porous metal article.
- an exemplary method for manufacturing a porous metal article 10 may include the least the following steps.
- the substrate 11 is pretreated.
- the substrate 11 is washed with a solution (e.g., NaOH), and then washed with a deionized water, to remove grease, dirt, and/or impurities, followed by drying.
- a solution e.g., NaOH
- a green coating is formed on the substrate 11 by hot-tip coating process.
- the green coating includes a noble metal and M, wherein M comprises at least one selected from the group consisting of zinc, aluminum, magnesium and calcium.
- the content of M in the green coating is between about 30 wt % and about 70 wt % of the total weight of noble metal, M.
- the noble metal comprises at least one selected from the group consisting of ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold.
- the substrate 11 passes through a molten bath of noble metal and M at a temperature that is above a melting point of a noble metal M alloy about 50 Celsius degree (° C.), for about 1 minute to about 3 minutes.
- the green coating has a thickness between about 5 micrometers and about 10 minutes.
- the green coating on the substrate 11 is electrochemically etched to remove M from an outer surface of the green coating to form a porous silicon layer 15 on the outer surface of the green coating.
- the portion of the green coating in which M is not removed forms a metal layer 13 on the substrate 11 .
- the green coating acts as an anode
- a platinum plate acts as cathode, using hydrochloric acid, formic acid, acetic acid, oxalic acid or sulphuric acid as electrolyte.
- the content of the hydrochloric acid or sulphuric acid is between about 3 wt % and about 15 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage between about 2 volts and about 5 volts, a current density between about 0.5 mA/cm2 and about 4 mA/cm 2 for about 5 minutes to about 20 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness between 2 micrometers and 4 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size between about 50 nanometers (nm) and about 120 nm.
- the porous metal article 10 manufactured by the present method includes a substrate 11 , a metal layer 13 formed on the substrate 11 , and a porous metal layer 15 formed on the metal layer 13 .
- the substrate 11 is made of stainless steel or plastic.
- the metal layer 13 includes a noble metal and M, wherein M comprises at least one selected from the group consisting of aluminum, magnesium and calcium.
- the content of M in the metal layer 13 is between about 30 wt % and about 70 wt % of the total weight of noble metal, M.
- the noble metal is at least one selected from the group consisting of ruthenium, rhodium, palladium, silver, osmium, iridium, platinum and gold.
- the metal layer 13 has a thickness between about 1 micrometer and about 8 micrometers.
- the porous metal layer 15 has a thickness between about 2 micrometers and about 4 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size between about 50 nanometers (nm) and about 120 nm.
- the substrate 11 passes through a molten bath of golden and calcium at a temperature of about 950 V, for about 3 minutes.
- the green coating has a thickness of about 10 micrometers.
- golden-to-calcium mass ratio is about 1:2.
- the green coating is electrochemically etched to form a porous silicon layer 15 .
- the green coating acts as an anode
- a platinum plate acts as cathode
- using sulphuric acid as electrolyte The content of the sulphuric acid is about 15 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage about of about 5 volts, a current density of about 4 mA/cm 2 for about 20 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness of about 4 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 50 nm.
- the substrate 11 passes through a molten bath of palladium and magnesium at a temperature of about 1350° C., for about 2 minutes.
- the green coating has a thickness of about 5 micrometers.
- golden-to-magnesium mass ratio is about 63.7:36.3.
- the green coating is electrochemically etched to form a porous silicon layer 15 .
- the green coating acts as an anode
- a platinum plate acts as cathode
- acetic acid as electrolyte.
- the content of the acetic acid is about 3 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage about 3 volts, a current density of about 0.5 mA/cm 2 for about 5 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness of about 2 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 120 nm.
- the substrate 11 passes through a molten bath of platinum, ruthenium and aluminum at a temperature of about 1127° C., for about 3 minutes.
- the green coating has a thickness of about 10 micrometers.
- platinum-to-ruthenium-to-aluminum mass ratio is about 25:25:50.
- the green coating is electrochemically etched to form a porous silicon layer 15 .
- the green coating acts as an anode
- a platinum plate acts as cathode
- hydrochloric acid as electrolyte.
- the content of the hydrochloric acid is about 10 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage about 3 volts, a current density of about 3.5 mA/cm 2 for about 15 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness of about 6 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 80 nm.
- the substrate 11 passes through a molten bath of iridium, osmium and magnesium at a temperature of about 950° C., for about 2 minutes.
- the green coating has a thickness of about 5 micrometers.
- iridium-to-osmium-to-magnesium mass ratio is about 30:30:40.
- the green coating is electrochemically etched to form a porous silicon layer 15 .
- the green coating acts as an anode
- a platinum plate acts as cathode
- using formic acid and sulphuric acid as electrolyte is about 5 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage about 5 volts, a current density of about 3 mA/cm 2 for about 6 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness of about 3 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 60 nm.
- the substrate 11 passes through a molten bath of platinum, silver and aluminum at a temperature of about 1400° C., for about 3 minutes.
- the green coating has a thickness of about 10 micrometers.
- platinum-to-silver-to-aluminum mass ratio is about 35:35:30.
- the green coating is electrochemically etched to form a porous silicon layer 15 .
- the green coating acts as an anode
- a platinum plate acts as cathode, using hydrochloric acid and oxalic acid as electrolyte.
- the content of the hydrochloric acid and oxalic acid is about 3 wt % of the total weight of the electrolyte.
- a constant power applied between the anode and the cathode may have a voltage about 4 volts, a current density of about 3 mA/cm 2 for about 17 minutes to form the porous metal layer 15 .
- the porous metal layer 15 has a thickness of about 4 micrometers.
- the porous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 80 nm.
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- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
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Abstract
Description
- This application is a divisional application of U.S. Ser. No. 13/217,915, filed Aug. 25, 2011, the contents of which are hereby incorporated by reference. The patent application Ser. No. 13/217,915 in turn claims the benefit of priority under 35 USC 119 from Chinese Patent Application 201110070389.3, filed on Mar. 23, 2011.
- This application is one of the three related co-pending U.S. patent applications listed below. All listed applications have the same assignee. The disclosure of each of the listed applications is incorporated by reference into another listed application.
-
U.S. Ser. No. Title Inventors 13/217,915 POROUS METAL ARTICLE AND HSIN-PEI ABOUT METHOD FOR CHANG et al. MANUFACTURING SAME 13/217,906 POROUS SILICON ARTICLE AND HSIN-PEI ABOUT METHOD FOR CHANG et al. MANUFACTURING SAME 13/217,909 POROUS METAL ARTICLE AND HSIN-PEI ABOUT METHOD FOR CHANG et al. MANUFACTURING SAME - 1. Technical Field
- The exemplary disclosure generally relates to porous metal articles and methods for manufacturing the porous metal articles.
- 2. Description of Related Art
- Noble metals, such as ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold, are resistant to corrosion and oxidation in moist air. Therefore these materials can be used as accelerators for purifying exhaust gas. The accelerating function of the noble metals is much related to their surfaces. A typical way to improve the accelerating function of the noble metals, is introducing porous holes in their surfaces. However, porous holes in noble metals surfaces may still result.
- Therefore, there is room for improvement within the art.
- Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the exemplary embodiment of a porous metal article and method for manufacturing the porous metal article. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an exemplary embodiment.
- The FIGURE illustrates a cross-sectional view of an exemplary embodiment of an porous metal article.
- Referring to Figure, an exemplary method for manufacturing a
porous metal article 10 may include the least the following steps. - Providing a
substrate 11 made of plastic or stainless steel. - The
substrate 11 is pretreated. For example, thesubstrate 11 is washed with a solution (e.g., NaOH), and then washed with a deionized water, to remove grease, dirt, and/or impurities, followed by drying. - A green coating is formed on the
substrate 11 by hot-tip coating process. The green coating includes a noble metal and M, wherein M comprises at least one selected from the group consisting of zinc, aluminum, magnesium and calcium. The content of M in the green coating is between about 30 wt % and about 70 wt % of the total weight of noble metal, M. The noble metal comprises at least one selected from the group consisting of ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold. During forming the green coating, thesubstrate 11 passes through a molten bath of noble metal and M at a temperature that is above a melting point of a noble metal M alloy about 50 Celsius degree (° C.), for about 1 minute to about 3 minutes. The green coating has a thickness between about 5 micrometers and about 10 minutes. - The green coating on the
substrate 11 is electrochemically etched to remove M from an outer surface of the green coating to form aporous silicon layer 15 on the outer surface of the green coating. The portion of the green coating in which M is not removed forms ametal layer 13 on thesubstrate 11. During electrochemical etching, the green coating acts as an anode, a platinum plate acts as cathode, using hydrochloric acid, formic acid, acetic acid, oxalic acid or sulphuric acid as electrolyte. The content of the hydrochloric acid or sulphuric acid is between about 3 wt % and about 15 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage between about 2 volts and about 5 volts, a current density between about 0.5 mA/cm2 and about 4 mA/cm2 for about 5 minutes to about 20 minutes to form theporous metal layer 15. Theporous metal layer 15 has a thickness between 2 micrometers and 4 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size between about 50 nanometers (nm) and about 120 nm. - The
porous metal article 10 manufactured by the present method includes asubstrate 11, ametal layer 13 formed on thesubstrate 11, and aporous metal layer 15 formed on themetal layer 13. Thesubstrate 11 is made of stainless steel or plastic. Themetal layer 13 includes a noble metal and M, wherein M comprises at least one selected from the group consisting of aluminum, magnesium and calcium. The content of M in themetal layer 13 is between about 30 wt % and about 70 wt % of the total weight of noble metal, M. The noble metal is at least one selected from the group consisting of ruthenium, rhodium, palladium, silver, osmium, iridium, platinum and gold. Themetal layer 13 has a thickness between about 1 micrometer and about 8 micrometers. Theporous metal layer 15 has a thickness between about 2 micrometers and about 4 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size between about 50 nanometers (nm) and about 120 nm. - Experimental examples of the present disclosure are following.
- 1. Forming the green coating on the
substrate 11 made of stainless steel, such as type 304 stainless. - The
substrate 11 passes through a molten bath of golden and calcium at a temperature of about 950 V, for about 3 minutes. The green coating has a thickness of about 10 micrometers. In this exemplary embodiment, golden-to-calcium mass ratio is about 1:2. - 2. The green coating is electrochemically etched to form a
porous silicon layer 15. - The green coating acts as an anode, a platinum plate acts as cathode, using sulphuric acid as electrolyte. The content of the sulphuric acid is about 15 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage about of about 5 volts, a current density of about 4 mA/cm2 for about 20 minutes to form the
porous metal layer 15. Theporous metal layer 15 has a thickness of about 4 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 50 nm. - 1. Forming the green coating on the
substrate 11 made of ceramic, such as aluminum oxide. - The
substrate 11 passes through a molten bath of palladium and magnesium at a temperature of about 1350° C., for about 2 minutes. The green coating has a thickness of about 5 micrometers. In this exemplary embodiment, golden-to-magnesium mass ratio is about 63.7:36.3. - 2. The green coating is electrochemically etched to form a
porous silicon layer 15. - The green coating acts as an anode, a platinum plate acts as cathode, using acetic acid as electrolyte. The content of the acetic acid is about 3 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage about 3 volts, a current density of about 0.5 mA/cm2 for about 5 minutes to form the
porous metal layer 15. Theporous metal layer 15 has a thickness of about 2 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 120 nm. - 1. Forming the green coating on the
substrate 11 made of ceramic, such as aluminum oxide. - The
substrate 11 passes through a molten bath of platinum, ruthenium and aluminum at a temperature of about 1127° C., for about 3 minutes. The green coating has a thickness of about 10 micrometers. In this exemplary embodiment, platinum-to-ruthenium-to-aluminum mass ratio is about 25:25:50. - 2. The green coating is electrochemically etched to form a
porous silicon layer 15. - The green coating acts as an anode, a platinum plate acts as cathode, using hydrochloric acid as electrolyte. The content of the hydrochloric acid is about 10 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage about 3 volts, a current density of about 3.5 mA/cm2 for about 15 minutes to form the
porous metal layer 15. Theporous metal layer 15 has a thickness of about 6 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 80 nm. - 1. Forming the green coating on the
substrate 11 made of stainless steel, such as type 304 stainless. - The
substrate 11 passes through a molten bath of iridium, osmium and magnesium at a temperature of about 950° C., for about 2 minutes. The green coating has a thickness of about 5 micrometers. In this exemplary embodiment, iridium-to-osmium-to-magnesium mass ratio is about 30:30:40. - 2. The green coating is electrochemically etched to form a
porous silicon layer 15. - The green coating acts as an anode, a platinum plate acts as cathode, using formic acid and sulphuric acid as electrolyte. The content of the formic acid and sulphuric acid is about 5 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage about 5 volts, a current density of about 3 mA/cm2 for about 6 minutes to form the
porous metal layer 15. Theporous metal layer 15 has a thickness of about 3 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 60 nm. - 1. Forming the green coating on the
substrate 11 made of ceramic, such as aluminum oxide. - The
substrate 11 passes through a molten bath of platinum, silver and aluminum at a temperature of about 1400° C., for about 3 minutes. The green coating has a thickness of about 10 micrometers. In this exemplary embodiment, platinum-to-silver-to-aluminum mass ratio is about 35:35:30. - 2. The green coating is electrochemically etched to form a
porous silicon layer 15. - The green coating acts as an anode, a platinum plate acts as cathode, using hydrochloric acid and oxalic acid as electrolyte. The content of the hydrochloric acid and oxalic acid is about 3 wt % of the total weight of the electrolyte. A constant power applied between the anode and the cathode may have a voltage about 4 volts, a current density of about 3 mA/cm2 for about 17 minutes to form the
porous metal layer 15. Theporous metal layer 15 has a thickness of about 4 micrometers. Theporous metal layer 15 defines a plurality of nano-pores, and each nano-pore has a pore opening size of about 80 nm. - It is to be understood, however, that even through numerous characteristics and advantages of the exemplary disclosure have been set forth in the foregoing description, together with details of the system and function of the disclosure, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/942,233 US20130302636A1 (en) | 2011-03-23 | 2013-07-15 | Porous metal article and about method for manufacturing same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011100703893A CN102691092A (en) | 2011-03-23 | 2011-03-23 | Preparation method of metal porous material and metal porous material obtained by it |
CN2011100703893 | 2011-03-23 | ||
US13/217,915 US8512545B2 (en) | 2011-03-23 | 2011-08-25 | Porous metal article and about method for manufacturing same |
US13/942,233 US20130302636A1 (en) | 2011-03-23 | 2013-07-15 | Porous metal article and about method for manufacturing same |
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US13/942,233 Abandoned US20130302636A1 (en) | 2011-03-23 | 2013-07-15 | Porous metal article and about method for manufacturing same |
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CN106887424B (en) * | 2017-03-17 | 2020-11-24 | 京东方科技集团股份有限公司 | Conductive pattern structure, preparation method thereof, array substrate and display device |
CN109016778B (en) * | 2017-06-09 | 2020-09-08 | 清华大学 | Method for preparing porous metal composite structure |
KR102594660B1 (en) * | 2021-02-22 | 2023-10-27 | 한국과학기술연구원 | Method for preparation of nanoporous alloy film |
Citations (5)
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US20060121080A1 (en) * | 2002-11-13 | 2006-06-08 | Lye Whye K | Medical devices having nanoporous layers and methods for making the same |
US20060191327A1 (en) * | 2004-12-23 | 2006-08-31 | Dehua Yang | Method of measuring interfacial adhesion properties of stents |
US20080086198A1 (en) * | 2002-11-13 | 2008-04-10 | Gary Owens | Nanoporous stents with enhanced cellular adhesion and reduced neointimal formation |
US20080147177A1 (en) * | 2006-11-09 | 2008-06-19 | Torsten Scheuermann | Endoprosthesis with coatings |
US20100057197A1 (en) * | 2008-08-27 | 2010-03-04 | Boston Scientific Scimed, Inc. | Medical devices having inorganic coatings for therapeutic agent delivery |
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US2994951A (en) * | 1946-02-07 | 1961-08-08 | Lowell D Eubank | Method of applying metallic coatings |
US3190749A (en) * | 1963-07-23 | 1965-06-22 | Du Pont | Alloy article having a porous outer surface and process of making same |
JPS5751283A (en) * | 1980-09-12 | 1982-03-26 | Nippon Steel Corp | Electroplating method for zinc-iron alloy |
JPS5925986A (en) * | 1982-07-16 | 1984-02-10 | Asahi Glass Co Ltd | Cathode with high durability and low hydrogen over-voltage and its manufacture |
US4977038A (en) * | 1989-04-14 | 1990-12-11 | Karl Sieradzki | Micro- and nano-porous metallic structures |
US5378330A (en) * | 1993-05-07 | 1995-01-03 | Panasonic Technologies, Inc. | Method for polishing micro-sized structures |
JP4091728B2 (en) * | 2000-03-27 | 2008-05-28 | 京セラ株式会社 | Bioimplant material and its manufacturing method |
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KR100969209B1 (en) * | 2002-01-31 | 2010-07-09 | 후지필름 가부시키가이샤 | Producing method of unit for biochemical analysis |
CA2503625A1 (en) * | 2002-11-13 | 2004-05-27 | Setagon, Inc. | Medical devices having porous layers and methods for making same |
CN1887418A (en) * | 2006-07-17 | 2007-01-03 | 山东大学 | Nanometer porous metal catalyst and its prepn |
CN101337193B (en) * | 2008-08-04 | 2010-07-14 | 山东大学 | Method of surface nano-crystallization of noble metal catalyst |
CN102485959A (en) * | 2010-12-01 | 2012-06-06 | 鸿富锦精密工业(深圳)有限公司 | Metal porous material and preparation method of the metal porous material |
-
2011
- 2011-03-23 CN CN2011100703893A patent/CN102691092A/en active Pending
- 2011-08-25 US US13/217,915 patent/US8512545B2/en not_active Expired - Fee Related
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2013
- 2013-07-15 US US13/942,233 patent/US20130302636A1/en not_active Abandoned
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US20060121080A1 (en) * | 2002-11-13 | 2006-06-08 | Lye Whye K | Medical devices having nanoporous layers and methods for making the same |
US20080086198A1 (en) * | 2002-11-13 | 2008-04-10 | Gary Owens | Nanoporous stents with enhanced cellular adhesion and reduced neointimal formation |
US20060191327A1 (en) * | 2004-12-23 | 2006-08-31 | Dehua Yang | Method of measuring interfacial adhesion properties of stents |
US20080147177A1 (en) * | 2006-11-09 | 2008-06-19 | Torsten Scheuermann | Endoprosthesis with coatings |
US20100057197A1 (en) * | 2008-08-27 | 2010-03-04 | Boston Scientific Scimed, Inc. | Medical devices having inorganic coatings for therapeutic agent delivery |
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CN102691092A (en) | 2012-09-26 |
US20120244377A1 (en) | 2012-09-27 |
US8512545B2 (en) | 2013-08-20 |
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