EP1228266A1 - Procede de metallisation d'un substrat isolant par voie electrochimique - Google Patents
Procede de metallisation d'un substrat isolant par voie electrochimiqueInfo
- Publication number
- EP1228266A1 EP1228266A1 EP00966282A EP00966282A EP1228266A1 EP 1228266 A1 EP1228266 A1 EP 1228266A1 EP 00966282 A EP00966282 A EP 00966282A EP 00966282 A EP00966282 A EP 00966282A EP 1228266 A1 EP1228266 A1 EP 1228266A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- substrate
- electrochemical cell
- cathode
- insulating substrate
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- 239000010408 film Substances 0.000 claims abstract description 36
- 238000000151 deposition Methods 0.000 claims abstract description 20
- 239000003792 electrolyte Substances 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 230000012010 growth Effects 0.000 claims abstract description 11
- 239000010409 thin film Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 11
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Chemical group 0.000 claims description 5
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Chemical group 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 24
- 230000008021 deposition Effects 0.000 description 10
- 238000001465 metallisation Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 150000001450 anions Chemical class 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 210000001787 dendrite Anatomy 0.000 description 3
- 238000004070 electrodeposition Methods 0.000 description 3
- 150000001879 copper Chemical class 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000002659 electrodeposit Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
Definitions
- the present invention relates to a method of metallizing an insulating substrate by electrochemical means.
- the oldest methods consist in bringing the insulating plate to be metallized in contact with a solution of a salt of the metal and of a reducing solution which causes precipitation.
- the contacting can be done by watering or by immersion.
- These processes require the use of a mixture of salts and optionally additives.
- they do not make it possible to control either the deposition speed or the texture, that is to say the quality of the deposit obtained.
- the substrate is then placed in a solution of a copper salt and it is connected to an anode constituted by copper and a cathode constituted by a gold film, the two electrodes being connected to a current generator.
- the deposition on the surface of the insulating substrate is obtained by reduction of copper at the cathode.
- the reduced metal begins by depositing at the cathode, then the deposit continues on the surface to be metallized covered with the thin film which does not conduct gold. But in this case also, one results in a dendritic growth which does not form a regular thin film completely covering. On the contrary, the structure of the deposit is extremely tree-like and tortuous.
- the research carried out by the inventor has made it possible to show that, when an electrochemical process is implemented to grow powders along the surface of a substrate, by applying to the electrochemical cell a clearly current density higher than the current densities beyond which it was possible, according to the prior art, to obtain only three-dimensional powders, a deposit was obtained on the substrate in which the grains are arranged so as to form a uniform film covering and no longer dendrites.
- the method of metallizing an insulating substrate by depositing a uniform thin film of a metal M on said insulating substrate consists in placing said substrate in an electrochemical cell which contains as electrolyte a solution of a salt of metal M in a solvent and which comprises an anode constituted by the metal M and a cathode in direct contact with said insulating substrate, then in carrying out an electrolysis at constant current, said method being characterized in that: a conductive film is initially applied to one end of the substrate which will constitute the cathode; - The substrate is placed in the electrochemical cell so that the surface to be metallized is vertical, and the cathode located at the top; the current imposelectrochi ⁇ .i ⁇ ue is imposed on a current having an intensity such that it creates a current density of between 1 and 50 mA / cm 2 in the horizontal section of the electrochemical cell at the height of the growth front of the film which deposit.
- the current can vary within the aforementioned interval. It is however preferable to operate in galvanostatic mode by imposing a constant current to improve the homogeneity of the deposited film.
- the growth speed V of the film which is deposited on the substrate is proportional to the intensity of the electric field.
- the powders formed are deposited on the surface of the substrate, forming a continuous film.
- the deposit begins to form at the top of the substrate in contact with the thin conductive film deposited as a cathode, then the front of the deposit progresses uniformly and evenly downward along the surface of the substrate to be metallized, in the direction of the 'anode.
- the method of the invention can be implemented for metallizing very varied insulating substrates, such as for example plates or glass fibers, plates or
- Different metals M can be used for metallization. Mention may in particular be made of copper, silver, cobalt, iron and tin.
- the metal M is introduced into the solvent in the form of a cation associated with an anion in a simple salt, which must have a solubility greater than 10 ⁇ 3 mol.l ⁇ 1 in the solvent.
- the solvent for the electrolyte may or may not be aqueous. Aqueous solutions are particularly preferred for the simplicity of their implementation.
- the salt concentration of the electrolyte is preferably between 0.02 and 0.05 mol.l -1 .
- it is preferable to pretreat the surface of the substrate to be metallized by depositing a thin, non-percolating, and therefore non-conductive, film of an air-stable metal M ′ in the metallic form.
- Such pretreatment can consist of depositing gold islands forming a non-continuous film having a thickness of the order of 10 to 30 ⁇ . It is also possible to pretreat the surface of the substrate to be metallized with a so-called activating solution containing palladium chloride which produces islets of palladium.
- the anode consists of a sheet or wire of metal M, and serves as a source of metal M.
- the cathode can be a thin film of metal M or of another metal, for example M '.
- the metal forming the cathode is gold
- a film of about 1000 ⁇ is suitable.
- FIG. 1 represents a device for depositing a continuous layer of metal M on a substrate.
- the device comprises an electrochemical cell 1 connected to a generator 2.
- the cell 1 consists of two rectangular glass slides 3 and 4 placed vertically. Lely and parallel to each other, one of the sides (of length L) of the blades being placed horizontally.
- the substrate to be metallized is the face of the strip 3 oriented towards the interior of the cell.
- the blades 3 and 4 are kept spaced apart by a distance h by a separator 5.
- the separator 5 can be a blade or a wire of the metal M or of another metal stable with respect to the electrolyte, it is ie a metal which has a standard oxidation potential greater than that of the metal M, so as to avoid deposition of the electroless type.
- the distance h is preferably between approximately 50 ⁇ m and a few mm.
- a cathode 6, located at the upper part of the blade 3, can be constituted by a simple metal paint (of the "silver lacquer" type) deposited on the upper edge of the blade 3.
- An anode 7, located at the lower part of the blade 3, may consist of a wire or a sheet of metal M.
- the separator 5 also serves as contact between the generator 2 and the electrode 6.
- the anode 7 also serves as a separator. In this embodiment, the anode is connected directly to the substrate.
- Metal islands M 'in a layer 8 sufficiently thin to be non-piercing, are deposited on the surface to be metallized of the blade 3.
- the intensity of the current applied to the cell which makes it possible to obtain a uniform and covering metal film " M is between 100 and 2000 ⁇ A, when the salt concentration C of the metal M in the electrolyte is of the order of 0.05 mole / liter.
- This current intensity applied to the electrochemical cell causes a current intensity between 2.5 and 50 mA per cm 2 of surface in the horizontal section of the cell at the growth front of the deposit.
- e 2h x C / C M.
- FIG. 2 shows another embodiment, in which the cell 1 ′ is constituted by a cylindrical tube 10 of radius R 2 bent in a U and placed vertically.
- the substrate to be metallized is a wire 9 of radius R lr such as a glass fiber for example.
- the wire 9 is very cleanly cleaned, possibly covered with a film of metal M ', for example a non-percolating gold film.
- a metal M ' for example a non-percolating gold film.
- the wire 9 is covered at one of its ends, with a metal deposit forming the cathode 6 ', which is connected to a generator not shown.
- the other end of the wire 9 is introduced into one of the openings of the U-shaped tube which contains the electrolyte.
- a metal wire M is introduced into the U-shaped tube through the other opening and forms a soluble anode 7 '.
- the wire 9 is not directly connected to the anode. Its length could however be such that it meets the end of the wire serving as anode.
- the metal deposit M begins to grow along the cathode, on the surface of the substrate to be metallized.
- the thin film that forms gradually invades the surface to be metallized, as the growth front of the deposit moves away from the cathode. If the substrate is a glass plate, we obtain a mirror.
- the electrochemical cell can be adapted in such a way that the deposition of the metal M takes place continuously.
- the substrate is then pulled vertically upward through the cell, as the part immersed in the electrolyte is covered with metal.
- Example 1 The metallization of one face of a glass plate was carried out using a device as shown in FIG. 1.
- a uniform covering film was thus obtained having a thickness of the order of 0.1 ⁇ m.
- Example 2 The metallization of a glass fiber was carried out in a device as shown in FIG. 2.
- the cell consists of a segment of capillary glass tube, with an internal diameter of 1 mm and a length of 3 cm, bent in a U shape, so that the two openings are located in the high position, to prevent the electrolyte from disperses by gravity.
- the tube was filled with a solution silver nitrate.
- the glass fiber which has a diameter 200 ⁇ m, was coated with a primer of silver lacquer and introduced vertically into one of the openings, until the cathode part serving as primer is immersed in the electrolyte to a depth of about 2 mm.
- a silver wire serving as a counter electrode (anode) was introduced into the other opening.
- the current was circulated through the tube by imposing a constant current of 100 ⁇ A between the primer on the fiber and the anode. There was thus obtained a uniform deposition of a metallic film on the fiber. The fiber was then removed by pulling it from the top, taking care not to scrape the metallized fiber from the edges of the glass tube.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrolytic Production Of Metals (AREA)
- Insulated Metal Substrates For Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Chemically Coating (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9912644 | 1999-10-11 | ||
| FR9912644A FR2799475B1 (fr) | 1999-10-11 | 1999-10-11 | Procede de metallisation d'un substrat isolant par voie electrochimique |
| PCT/FR2000/002757 WO2001027356A1 (fr) | 1999-10-11 | 2000-10-04 | Procédé de métallisation d'un substrat isolant par voie électrochimique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1228266A1 true EP1228266A1 (fr) | 2002-08-07 |
| EP1228266B1 EP1228266B1 (fr) | 2004-02-04 |
Family
ID=9550779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00966282A Expired - Lifetime EP1228266B1 (fr) | 1999-10-11 | 2000-10-04 | Procede de metallisation d'un substrat isolant par voie electrochimique |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6764586B1 (fr) |
| EP (1) | EP1228266B1 (fr) |
| JP (1) | JP4637429B2 (fr) |
| AT (1) | ATE259006T1 (fr) |
| AU (1) | AU7672900A (fr) |
| CA (1) | CA2387109C (fr) |
| DE (1) | DE60008134T2 (fr) |
| ES (1) | ES2213047T3 (fr) |
| FR (1) | FR2799475B1 (fr) |
| WO (1) | WO2001027356A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2812723B1 (fr) * | 2000-08-01 | 2002-11-15 | Centre Nat Rech Scient | Capteur de molecules gazeuses reductrices |
| DE10240921B4 (de) * | 2002-09-02 | 2007-12-13 | Qimonda Ag | Verfahren und Anordnung zum selektiven Metallisieren von 3-D-Strukturen |
| US20170105287A1 (en) * | 2015-10-12 | 2017-04-13 | Tyco Electronics Corporation | Process of Producing Electronic Component and an Electronic Component |
| US10184189B2 (en) * | 2016-07-18 | 2019-01-22 | ECSI Fibrotools, Inc. | Apparatus and method of contact electroplating of isolated structures |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596515A (en) * | 1946-03-14 | 1952-05-13 | Libbey Owens Ford Glass Co | Coating vitreous substances |
| JP2829304B2 (ja) * | 1992-11-05 | 1998-11-25 | 誠 河瀬 | セラミック上へのZr合金めっき方法 |
| FR2707673B1 (fr) * | 1993-07-16 | 1995-08-18 | Trefimetaux | Procédé de métallisation de substrats non-conducteurs. |
| FR2746116B1 (fr) * | 1996-03-15 | 1998-06-05 | Galvanoplastie sous champ | |
| US6572743B2 (en) * | 2001-08-23 | 2003-06-03 | 3M Innovative Properties Company | Electroplating assembly for metal plated optical fibers |
-
1999
- 1999-10-11 FR FR9912644A patent/FR2799475B1/fr not_active Expired - Lifetime
-
2000
- 2000-10-04 US US10/110,126 patent/US6764586B1/en not_active Expired - Lifetime
- 2000-10-04 DE DE60008134T patent/DE60008134T2/de not_active Expired - Lifetime
- 2000-10-04 CA CA2387109A patent/CA2387109C/fr not_active Expired - Lifetime
- 2000-10-04 ES ES00966282T patent/ES2213047T3/es not_active Expired - Lifetime
- 2000-10-04 WO PCT/FR2000/002757 patent/WO2001027356A1/fr not_active Ceased
- 2000-10-04 EP EP00966282A patent/EP1228266B1/fr not_active Expired - Lifetime
- 2000-10-04 JP JP2001529484A patent/JP4637429B2/ja not_active Expired - Lifetime
- 2000-10-04 AU AU76729/00A patent/AU7672900A/en not_active Abandoned
- 2000-10-04 AT AT00966282T patent/ATE259006T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0127356A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60008134D1 (de) | 2004-03-11 |
| AU7672900A (en) | 2001-04-23 |
| ES2213047T3 (es) | 2004-08-16 |
| EP1228266B1 (fr) | 2004-02-04 |
| CA2387109C (fr) | 2011-05-24 |
| WO2001027356A1 (fr) | 2001-04-19 |
| FR2799475B1 (fr) | 2002-02-01 |
| JP2003511564A (ja) | 2003-03-25 |
| DE60008134T2 (de) | 2004-09-02 |
| US6764586B1 (en) | 2004-07-20 |
| CA2387109A1 (fr) | 2001-04-19 |
| FR2799475A1 (fr) | 2001-04-13 |
| JP4637429B2 (ja) | 2011-02-23 |
| ATE259006T1 (de) | 2004-02-15 |
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