EP3488029A1 - Aluminium-kupfer-konnektor aufweisend eine heterostruktur und verfahren zur herstellung der heterostruktur - Google Patents
Aluminium-kupfer-konnektor aufweisend eine heterostruktur und verfahren zur herstellung der heterostrukturInfo
- Publication number
- EP3488029A1 EP3488029A1 EP17742365.4A EP17742365A EP3488029A1 EP 3488029 A1 EP3488029 A1 EP 3488029A1 EP 17742365 A EP17742365 A EP 17742365A EP 3488029 A1 EP3488029 A1 EP 3488029A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum
- copper
- mmol
- heterostructure
- anchoring layer
- 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
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
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- 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
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/38—Pretreatment of metallic surfaces to be electroplated of refractory metals or nickel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0607—Wires
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
-
- 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
- C25F3/04—Etching of light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
Definitions
- Aluminum-copper connector having a heterostructure and method for
- the invention relates to a heterostructure formed from the element metal copper (Cu) and pure aluminum (Al) or an aluminum alloy.
- the invention also relates to a body formed of aluminum or an aluminum alloy which carries on at least part of its surface a thick layer of copper.
- the invention relates to an electrically and thermally conductive, robust Al-Cu connector.
- aluminum is to be used abkrürzend as a collective term for both the pure element metal and for the technically common alloys of predominantly aluminum with manganese, magnesium, copper, silicon, nickel, zinc and beryllium, unless a distinction in the context is not required is. If an example of a concrete alloy is mentioned, then this is expressly named.
- Aluminum is known to oxidize very rapidly on its surface upon contact with atmospheric oxygen.
- copper is chemically stable and an excellent conductor of electricity.
- copper is expensive, allowing for power transmission lines over large
- the in-house power grids are usually made of copper, and usually at the branch of the main line to a house already installed a connector, which passes the current of aluminum in copper. This is not without problems, because a vanishing contact resistance is only to be expected if the two element metals are permanently in close area contact with each other.
- Aluminum and copper do not adhere well to each other, so that even with moderate temperature fluctuations, for example due to the ohmic resistance of the varying current flow, they can come off each other.
- Abrasives e.g. Sand blasting, or by etching, as from the pamphlets
- US Pat. No. 3,335,072 discloses a method for producing lithographic plates, in which copper is deposited on an aluminum surface, with the intention of forming a firmly adhering connection.
- Etching methods are known from the production of electrolytic capacitors which primarily serve to increase the surface area of aluminum and its industrial alloys, for example disclosed in the publications DE 14 96 956 A1, EP 0003125 A1, US Pat. No. 4,588,486, US Pat. No. 6,238,810 B1, US Pat. No. 6,858,126 B1, US 2009 027 38 85 A1, US 2013 026 41 96 A1.
- the achievable structures on the surface of an aluminum body form a rugged landscape of aluminum pillars, interspersed with deep pores with steps and undercuts, which typically appear like negligibly stacked packets and are still firmly attached to the body at their lower ends, for example as shown in Fig. 1 in two magnifications.
- the inventors have dealt more closely with the scientific investigation of the aluminum structures shown in Fig. 1, and have given the attribute "sculptured" to aluminum having such structures due to the appearance of the verticals, which are anything but smooth.
- the invention is now the task of forming a heterostructure of copper and aluminum, which has very good electrical and thermal conductivity and this retains even under high mechanical stress.
- a heterostructure comprising at least one first surface comprising copper alone and at least one second surface opposite the first surface comprising aluminum or an aluminum alloy, characterized by a. an anchoring layer disposed between the first and second surfaces, wherein b. each intersecting surface perpendicular to the anchoring layer comprises at least one of
- Copper-enclosed island made of aluminum or aluminum alloy, and c. at most the previously known mixed crystals of the aluminum alloy in the
- the surfaces mentioned above can generally designate arbitrarily shaped finite surfaces also within a body. It is assumed only that copper is present at each point of the first surface and aluminum or aluminum alloy at each point of the second surface. Usually the two surfaces are flat surfaces, but this is not necessary. Usually, at least one of the surfaces, usually the first surface, coincides with the surface of a body. If
- this copper-plated part surface may be the first surface and a plane inside the body the second surface.
- a heterostructure of copper and pure aluminum according to the invention has no mixed crystals whatsoever, while heterostructures of copper and an aluminum alloy merely show the mixed crystals already present in the alloy. In other words, the heterostructure itself does not form new mixed crystals, either during their production or at a later date.
- the heterostructure according to the invention can be produced in arbitrary aluminum bodies. Their preparation can be carried out by an etching attack to produce "sculptured" aluminum and subsequent electrodeposition of copper from an aqueous solution to the etched region.
- a two-stage process is proposed in which the production of the etched structures is separate from the coating of the " sculptured "aluminum surface with copper. This is advantageous for the reproducibility and cost-effectiveness of the production process.
- the thickness of the deposited copper layer can be chosen freely.
- an aluminum body can be provided on a part of its surface with a thick copper layer, which can be detached neither by mechanical deformation nor by thermal cycling.
- An aluminum body with copper coating Having the heterostructure according to the invention is an excellent Al-Cu connector. The copper layer can be contacted just as electrically and thermally as a
- the heterostructure according to the invention comprises an anchoring layer between the first surface (copper layer) and the second surface (in the aluminum body) with a layer thickness preferably between 0.5 and 100 micrometers, particularly preferably between 10 and 50 micrometers.
- the anchoring layer itself makes only a negligible contribution to the ohmic resistance because copper and aluminum are in perfect contact throughout the anchoring layer.
- FIG. 2 shows a picture of a sectional area perpendicular to the anchoring layer
- FIGS. 2 to 4 different sectional areas are shown by heterostructures recorded with an electron microscope.
- the heterostructures consist here for example of rectangular strips of the technical alloy AIMg3 (> 94% Al content) and
- the sectional images each show the surroundings of the copper-bearing surface and represent bright copper (upper part of the image) and dark AIMg3 (lower part of the image).
- the anchoring layer is recognizable by the fact that it has both bright and dark parts of the image and thereby shows the course of the copper-plated partial surface of the aluminum Strip follows. It is particularly noticeable that in each of the sections of copper completely enclosed islands of aluminum (here: AIMg3) can be seen - highlighted in the pictures by dashed borders. This initially gives the impression that aluminum fragments, such as grains, have somehow been mixed into the copper. However, all visible in FIGS.
- AIMg3 is first pretreated and then covered with a galvanically deposited copper layer.
- the samples can be seen in Fig. 6, wherein the
- Aluminum strip in a) polished, b) sandblasted in accordance with US 1457149 and c) according to the invention have been etched "sculptured.”
- Fig. 6 d) is a coating of copper on aluminum according to the teaching of US 2,495,941 to see.
- Fig. 7 shows the test results.
- the strip with the heterostructure according to the invention in FIG. 7 c) retains a perfectly adherent copper layer even during stretching; this is stretched together with the aluminum. There are no signs of damage to the coating integrity.
- the copper layer also stretches with the strip, however, the layer ruptures. It can be concluded that the force application of the expanding aluminum to the copper layer has not been uniform everywhere, i. there were areas of better and worse adhesion under the copper layer. This is also supported by the visible delamination of parts of the copper layer. In the cracks of the copper layer the aluminum background is visible, i. there was a partial replacement.
- the inventive heterostructure avoids mechanical, electrical and
- an aluminum-copper connector by providing a body of aluminum or an aluminum alloy having at least one copper-plated
- Partial surface having a heterostructure according to the invention produced.
- the anchoring layer should follow the course of the copper-plated partial surface in one
- the Al-Cu connector is formed as an aluminum cable - with any cross-section, possibly surrounded by insulation - with at least one copper-plated cable end. If insulation completely covers all non-coppered aluminum surfaces, the cable behaves virtually like a full copper cable and can be used as well.
- a further advantageous embodiment of an Al-Cu connector is the equipment of a commercially available aluminum heat sink, preferably a filled with water or other cooling liquid heat sink, with at least one copper-plated part surface. Pure copper is too heavy and too expensive as a heat sink, but the rapid removal of heat from the place of origin into the heat sink is thus promoted.
- a salt water solution is used as the etching electrolyte, the common salt (NaCl) with a concentration from the interval of 200 mmol / l to 800 mmol / l and Sodium sulfate (Na 2 SO 4) at a concentration of 5 mmol / 1 to 100 mmol / l.
- sodium fluoride (NaF) with a concentration in the interval from 5 mmol / l to 100 mmol / l can additionally be added to the etching electrolyte.
- the etching electrolyte has a chemical composition similar to seawater and contains no critical environmental toxins. It can be easily and inexpensively manufactured and disposed of again.
- the passivation takes place by the addition of at least one Passiviticiansspezies to the vulnerable surface, which slows down the etching in the attachment or even prevented.
- Passivation species can be very different, for example chlorine-containing molecules or phosphate or sulfate ions can have a passivating effect.
- the document US 2013/0264196 A1 proposes u. a. the addition of sodium nitrate (NaNO 3) as Passivi mecanicsspezies using high concentrations that stabilize the pore walls.
- etch current densities of 100 to 1000 mA / cm 2 are used there, so that etching still takes place at the pore tips because the passivation species pass through
- Diffusion limitation does not reach in sufficient quantity to the pore tips. This then leads to drilling (drilling) deeper, tunnel-like pores in aluminum.
- the etching electrolyte of the present invention relies primarily on chlorine ion-containing molecules as the passivation species.
- an inventively low ⁇ tzstrom disguise in the range between 10 mA / cm 2 and 100 mA / cm 2 and an etch bath temperature between 10 ° C and 40 ° C, a favorable reaction kinetics can be achieved with the etching electrolyte, ie that favorable for structuring ratio between passivation and resolution of
- Aluminum surface is set up. In particular, there is nowhere a diffusion limitation of the passivation species, in particular it is uniformly slowly etched everywhere.
- a galvanic electrolyte which comprises an aqueous solution containing copper sulfate (CuSO 4) with a concentration in the interval from 40 mmol / l to 120 mmol / l, boric acid (H 3 B03) with a concentration in the interval from 10 mmol / l to 30 mmol / l and Polyethylene glycol (PEG) with a concentration in the interval from 0.15 mmol / l to 0.55 mmol / l.
- CuSO 4 copper sulfate
- H 3 B03 boric acid
- PEG Polyethylene glycol
- Aluminum surface structures are completely enclosed by copper and in the copper deposition no voids are formed in the heterostructure.
- Copper deposition on the "sculptured" aluminum surface also makes it important to dissolve the naturally formed aluminum oxide layer in the copper electrolyte while at the same time not destroying the etched aluminum surface structures by chemical dissolution.
- the deposition current density should be set in the range between 1 mA / cm 2 and 30 mA / cm 2 . At a higher current density, voids may form in the heterostructure, while at too low a current density, copper deposition may be too slow.
- Anchoring layer which is the essential feature of the heterostructure of copper and aluminum according to the invention.
- an etching bath comprising an aqueous etching electrolyte containing between 200 mmol / l and 800 mmol / l of sodium chloride and between 5 mmol / l and 100 mmol / l of sodium sulphate;
- the procedure is as follows: First, a polycrystalline, rolled strip of an aluminum alloy (eg.
- AA5754 is patterned on its surface by electrochemical etching.
- the etching electrolyte for this is water containing 500 mmol / l NaCl and 56 mmol / l Na 2 SO 4.
- Aluminum structuring is carried out galvanostatically at a constant current density of about 50 mA / cm 2 .
- the etching time depends on the selected ⁇ tzstrom Why, the composition and temperature of the ⁇ tzelektrolyten and the desired structural depth in the aluminum; it is here for example 30 min.
- the person skilled in electrochemistry is familiar with the fact that when changing an etching parameter, he has to adapt the etching time to the new conditions, which he can easily accomplish by means of simple preliminary experiments.
- the galvanic copper deposition takes place in an aqueous electroplating electrolyte containing 72.1 mmol / l copper sulfate, 17.8 mmol / l boric acid and 0.33 mmol / l polyethylene glycol 3350. Deposition takes place
- the electrolyte temperature here is 20 ° C in both baths.
- Electrolyte baths is that the electrolytic plating bath for the copper deposition is not contaminated with Aluminiumiser extran. This will ensure that the
- Copper layer are high, which also control the electrical resistance of the
- the division into an etching bath and a deposition bath also advantageously increases the service lives of the electrolytes.
- the electrolytic electrolyte depletes of copper, it can easily be reconstituted with copper in situ - e.g. be enriched by copper counter electrode - or ex-situ.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016113641.7A DE102016113641A1 (de) | 2016-07-25 | 2016-07-25 | Aluminium-Kupfer-Konnektor aufweisend eine Heterostruktur und Verfahren zur Herstellung der Heterostruktur |
PCT/DE2017/100472 WO2018019321A1 (de) | 2016-07-25 | 2017-06-03 | Aluminium-kupfer-konnektor aufweisend eine heterostruktur und verfahren zur herstellung der heterostruktur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3488029A1 true EP3488029A1 (de) | 2019-05-29 |
Family
ID=59383388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17742365.4A Pending EP3488029A1 (de) | 2016-07-25 | 2017-06-03 | Aluminium-kupfer-konnektor aufweisend eine heterostruktur und verfahren zur herstellung der heterostruktur |
Country Status (4)
Country | Link |
---|---|
US (1) | US10870924B2 (de) |
EP (1) | EP3488029A1 (de) |
DE (1) | DE102016113641A1 (de) |
WO (1) | WO2018019321A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017118940A1 (de) | 2017-08-18 | 2019-02-21 | Christian-Albrechts-Universität Zu Kiel | Kunststofffaserverbundwerkstoff-Aluminium-Laminat sowie Verwendung |
US20210164120A1 (en) * | 2018-04-06 | 2021-06-03 | Furukawa Electric Co., Ltd. | Plated wire rod |
DE102018109531A1 (de) | 2018-04-20 | 2019-10-24 | Christian-Albrechts-Universität Zu Kiel | Klebe-Fügevorrichtung sowie Klebe-Fügeverfahren für eine metallische Oberfläche |
DE102021111149A1 (de) | 2021-04-29 | 2022-11-03 | Christian-Albrechts-Universität zu Kiel, Körperschaft des öffentlichen Rechts | Polymer-kompositstruktur aufweisend eine aluminium-polymer verankerungsschicht sowie ätzverfahren |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1457149A (en) | 1920-05-10 | 1923-05-29 | Cunningham Harry Douglas | Preparing aluminium or its alloys for electroplating |
DE606850C (de) | 1930-11-07 | 1934-12-12 | Siemens Ag | Verfahren zur Erzeugung festhaftender galvanischer Niederschlaege auf Aluminium und dessen Legierungen |
US2495941A (en) | 1946-12-18 | 1950-01-31 | Reynolds Metals Co | Electroplating copper on aluminum |
US3335072A (en) * | 1964-06-01 | 1967-08-08 | Martin Marietta Corp | Process of preparing lithographic plates |
DE1496956A1 (de) | 1965-03-15 | 1969-11-27 | Paehr Dr Hans Werner | Verfahren zur AEtzung von Metallbaendern |
US3684666A (en) | 1970-03-19 | 1972-08-15 | Pfizer & Co C | Copper electroplating in a citric acid bath |
CH588567A5 (de) | 1971-03-29 | 1977-06-15 | Ericsson Telefon Ab L M | |
JPS5123266B2 (de) | 1972-04-21 | 1976-07-15 | ||
JPS56520B2 (de) * | 1974-06-19 | 1981-01-08 | ||
DE2801218C3 (de) | 1978-01-12 | 1980-11-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zum elektrolytischen Ätzen einer rekristallisierten Aluminiumfolie und deren Verwendung |
US4588486A (en) | 1985-04-19 | 1986-05-13 | Sprague Electric Company | Etching of aluminum capacitor foil |
JPH02232390A (ja) | 1988-12-21 | 1990-09-14 | Internatl Business Mach Corp <Ibm> | 難鍍金性金属のための銅鍍金方法 |
TWI223678B (en) * | 1998-03-20 | 2004-11-11 | Semitool Inc | Process for applying a metal structure to a workpiece, the treated workpiece and a solution for electroplating copper |
US6238810B1 (en) | 1999-04-07 | 2001-05-29 | Pacesetter, Inc. | Process for using surface active agents to produce high etch gains for electrolytic capacitor manufacturing |
US6858126B1 (en) | 2002-11-06 | 2005-02-22 | Pacesetter, Inc. | High capacitance anode and system and method for making same |
US7578924B1 (en) | 2004-07-29 | 2009-08-25 | Pacesetter, Inc. | Process for producing high etch gains for electrolytic capacitor manufacturing |
US8535507B1 (en) | 2008-01-11 | 2013-09-17 | Pacesetter, Inc. | Electrochemical drilling system and process for improving electrical porosity of etched anode foil |
AU2012229161A1 (en) * | 2011-03-11 | 2013-09-26 | Avery Dennison Corporation | Sheet assembly with aluminum based electrodes |
-
2016
- 2016-07-25 DE DE102016113641.7A patent/DE102016113641A1/de active Pending
-
2017
- 2017-06-03 US US16/320,204 patent/US10870924B2/en active Active
- 2017-06-03 EP EP17742365.4A patent/EP3488029A1/de active Pending
- 2017-06-03 WO PCT/DE2017/100472 patent/WO2018019321A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
US10870924B2 (en) | 2020-12-22 |
DE102016113641A1 (de) | 2018-01-25 |
WO2018019321A1 (de) | 2018-02-01 |
US20190264346A1 (en) | 2019-08-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112015001594B4 (de) | Anschlusspaar und Steckverbinderpaar, das das Anschlusspaar einschließt | |
WO2018019321A1 (de) | Aluminium-kupfer-konnektor aufweisend eine heterostruktur und verfahren zur herstellung der heterostruktur | |
EP1430489B1 (de) | Elektrokeramisches bauelement mit mehreren kontaktflächen | |
WO2009006988A1 (de) | Kontakt-struktur für euin halbleiter-bauelement sowie verfahren zur herstellung desselben | |
DE60131338T2 (de) | Oberflächenbehandelte kupferfolie und ihre herstellung und kupferkaschiertes laminat daraus | |
DE112010003143T5 (de) | Halbleitervorrichtung, Verfahren zum Herstellen einer Halbleitervorrichtung, und Anzeigevorrichtung | |
EP0780871B1 (de) | Strukturierte Oberfläche mit spitzenförmigen Elementen | |
DE4433097A1 (de) | Verfahren zum Herstellen einer lichtabsorbierenden Schicht einer Solarzelle | |
DE69935333T2 (de) | Verbessertes verfahren zur herstellung leitender spuren und so hergestellte gedruckte leiterplatten | |
DE3029171A1 (de) | Verfahren zur herstellung von poroesen metallfilmen | |
DE2631904A1 (de) | Zuleitungsstreifen fuer integrierte schaltungsplatten und verfahren zu dessen herstellung | |
DE10340615B4 (de) | Verfahren zum Herstellen einer biaxial strukturierten metallischen Schicht und nach dem Verfahren hergestellte Schicht | |
DE2313106A1 (de) | Verfahren zum herstellen eines elektrischen verbindungssystems | |
DE102014222749B3 (de) | Verfahren zur Herstellung einer Kontaktstruktur zwischen einem Kantenabschnitt eines 2D-Materials und einem Metall | |
DE2017858A1 (de) | Verfahren zum Herstellen von mit einer Zinnlegierung beschichtetem Aluminium oder Aluminium-Legierungen | |
DE2438870C3 (de) | Elektolytkondensator | |
DE3724614C2 (de) | Verfahren zur elektrolytischen Herstellung einer Aluminiumoxidschicht an der Oberfläche eines Aluminiumverbundgegenstandes | |
DE4104325C2 (de) | Verfahren zur Herstellung eines widerstandsfähigen elektrisch isolierenden Überzugs auf Kupfermaterialoberflächen | |
DE112017005326B4 (de) | Verbindungsanschluss und Verfahren zum Herstellen eines Verbindungsanschlusses | |
DE69728547T2 (de) | Korrosionsfeste dauermagnet und herstellungsverfahren | |
DE495751C (de) | Verfahren zum UEberziehen eines Koerpers mit Platin | |
DE102009040632B4 (de) | Halbleiter-Bauelement und Verfahren zum Herstellen eines Halbleiter-Bauelements und damit hergestelltes Halbleiter-Bauelement | |
WO2013091751A2 (de) | Elektrisch leitfähiges bauelement, und verfahren zur herstellung eines solchen bauelements | |
DE102014221584B4 (de) | Elektrochemisches Sintern von Metallpartikelschichten | |
DE102021134524A1 (de) | Gekoppeltes Ätz- und Abscheideverfahren |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190212 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20200423 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |