DE3907902A1 - METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES - Google Patents

METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES

Info

Publication number
DE3907902A1
DE3907902A1 DE19893907902 DE3907902A DE3907902A1 DE 3907902 A1 DE3907902 A1 DE 3907902A1 DE 19893907902 DE19893907902 DE 19893907902 DE 3907902 A DE3907902 A DE 3907902A DE 3907902 A1 DE3907902 A1 DE 3907902A1
Authority
DE
Germany
Prior art keywords
acid
etching
fluoroboric acid
piezoceramic
added
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.)
Withdrawn
Application number
DE19893907902
Other languages
German (de)
Inventor
Eva-Maria Dipl Ing Wenzel
Ursula I Michelsen-Mohammadein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19893907902 priority Critical patent/DE3907902A1/en
Priority to PCT/DE1990/000176 priority patent/WO1990010609A1/en
Publication of DE3907902A1 publication Critical patent/DE3907902A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5338Etching
    • C04B41/5353Wet etching, e.g. with etchants dissolved in organic solvents
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/91After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/1851Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material
    • C23C18/1872Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by chemical pretreatment
    • C23C18/1886Multistep pretreatment
    • C23C18/1893Multistep pretreatment with use of organic or inorganic compounds other than metals, first
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00Piezoelectric or electrostrictive devices
    • H10N30/01Manufacture or treatment
    • H10N30/06Forming electrodes or interconnections, e.g. leads or terminals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

To obtain metallic coatings with high adhesive strength on piezoceramic bodies by chemical metallization, said bodies are etched with fluoroboric acid. Etching can be carried out by exposure to ultarasound, and additives such as boric acid, ammonium hydrogen fluoride or hydrofluoric acid can be added to the fluoroboric acid.

Description

Die Erfindung bezieht sich auf ein Verfahren zum chemischen Metallisieren von Keramikkörpern, bei dem der Keramikkörper zu­ nächst geätzt, danach mit einer Palladium-Lösung aktiviert und anschließend chemisch metallisiert wird.The invention relates to a method for chemical Metallizing ceramic bodies, in which the ceramic body too next etched, then activated with a palladium solution and is then chemically metallized.

Es ist ein Verfahren zum chemischen Metallisieren von Aluminiumoxidkeramiken bekannt (Zeitschrift "Plating and Surface Finishing", September 1987, Seiten 62 bis 67), bei dem mehrere chemische Substanzen zum Ätzen verwendet werden können, von denen einzelne den Vorzug haben, daß sie zu einer verhältnis­ mäßig haftfesten Metallschicht auf dem behandelten Aluminiumoxid- Keramikkörper führen. Versucht man die beim Ätzen von Aluminium­ oxid-Keramikkörpern bewährten Substanzen auch zum Ätzen von piezokeramischen Körpern einzusetzen, dann stellt man in Versuchen fest, daß in derartiger Weise vor dem eigentlichen chemischen Metallisieren vorbehandelte Piezokeramikkörper hinsichtlich der Haftfestigkeit der Metallschicht den gestell­ ten Anforderungen nicht gerecht werden.It is a process for the chemical metallization of Alumina ceramics known (magazine "Plating and Surface Finishing ", September 1987, pages 62 to 67), in which several chemical substances for etching can be used by which individuals prefer to have a relationship moderately adhesive metal layer on the treated aluminum oxide Guide ceramic body. If you try to etch aluminum oxide ceramic bodies also proven substances for etching use piezoceramic bodies, then you put in Try stating that in such a way before the actual chemical metallizing pretreated piezoceramic bodies the frame with regard to the adhesive strength of the metal layer do not meet the requirements.

Gemäß der Erfindung wird daher bei einem Verfahren der eingangs angegebenen Art erfindungsgemäß bei einem Piezokeramikkörper das Ätzen mit Fluoroborsäure vorgenommen. Insbesondere bei Körpern aus Blei-Zirkonat-Titanat sowie aus Zinn-Zirkonat-Titanat als piezokeramischer Werkstoff konnten sehr gut haftende Metallschichten erzielt werden.According to the invention, therefore, in a method of the beginning specified type according to the invention in a piezoceramic body etching with fluoroboric acid. Especially at Bodies made of lead zirconate titanate and tin zirconate titanate as a piezoceramic material could adhere very well Metal layers can be achieved.

Der wesentliche Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß bei einem Ätzen von Piezokeramikkörpern mit Fluoroborsäure in dem ersten von mehreren Vorbehandlungsschritten vor dem eigentlichen chemischen Metallisieren das Aufbringen einer Metallschicht ermöglicht wird, die sich durch eine hohe Haftfestigkeit auf dem Piezokeramikkörper auszeichnet.The main advantage of the method according to the invention is that when etching piezoceramic bodies with Fluoroboric acid in the first of several pretreatment steps before the actual chemical metallization a metal layer that is characterized by a high  Adhesion strength on the piezoceramic body.

Es hat sich bei dem erfindungsgemäßen Verfahren im Hinblick auf eine möglichst hohe Haftfestigkeit der Metallschicht auf Piezokeramikkörpern als besonders vorteilhaft erwiesen, wenn das Ätzen der Piezokeramikkörper mit Fluoroborsäure mit einer Konzentration von 30 bis 50% bei 20 bis 60°C für eine Zeit­ dauer zwischen 0,5 bis 5 Minuten vorgenommen wird.It has with regard to the method according to the invention the highest possible adhesive strength of the metal layer Piezoceramic bodies have proven to be particularly advantageous if etching the piezoceramic bodies with fluoroboric acid with a Concentration of 30 to 50% at 20 to 60 ° C for a time duration between 0.5 and 5 minutes.

Unter anderem dann, wenn mit dem erfindungsgemäßen Verfahren Piezokeramikkörper mit relativ engen Bohrungen auch im Bereich dieser Bohrungen chemisch metallisiert werden sollen, ist es vorteilhaft, wenn das Ätzen der Piezokeramikkörper unter Ultra­ schall-Beaufschlagung erfolgt.Among other things, when using the method according to the invention Piezoceramic body with relatively narrow holes in the area of these holes are to be chemically metallized, it is advantageous if the etching of the piezoceramic body under Ultra sound is applied.

Eine besonders hohe Haftfestigkeit von Metallschichten auf Piezokeramikkörpern läßt sich dann erzielen, wenn gemäß einer weiteren Ausgestaltung des erfindungsgemäßen Verfahrens der Fluoroborsäure 0,2 bis 35 g/1 Borsäure (H3BO3) zugesetzt werden. Anstelle des Zusatzes von Borsäure haben sich auch weitere Zusätze als sehr vorteilhaft herausgestellt. Dabei handelt es sich um Ammoniumhydrogenfluorid (NH4HF2), das mit 0,2 bis 50 g/l zuzusetzen ist, oder um Ammoniumfluorid (NH4F), das als Zusatz 0,2 bis 50 g/l ausmachen kann; auch ein Zusatz von 40%iger Flußsäure (HF) mit 0,5 bis 100 ml/l ist vorteilhaft.A particularly high adhesive strength of metal layers on piezoceramic bodies can be achieved if, according to a further embodiment of the process according to the invention, 0.2 to 35 g / 1 boric acid (H 3 BO 3 ) is added to the fluoroboric acid. Instead of adding boric acid, other additives have also proven to be very advantageous. These are ammonium hydrogen fluoride (NH 4 HF 2 ), which is to be added at 0.2 to 50 g / l, or ammonium fluoride (NH 4 F), which can make up 0.2 to 50 g / l as an additive; It is also advantageous to add 40% hydrofluoric acid (HF) at 0.5 to 100 ml / l.

Zur Erläuterung der Erfindung wird im folgenden ein besonders vorteilhafter Ätzvorgang beschrieben:In order to explain the invention, a special is given below advantageous etching process described:

Das Ätzen des Piezokeramikkörpers erfolgt mit einer 50%igen Fluoroborsäure (HBF4), der 1 g/l Ammoniumhydrogenfluorid (NH4HF2) zugesetzt worden ist. Die zu ätzenden Piezokeramik­ körper werden bei Raumtemperatur 1 Minute der Ätzflüssigkeit ausgesetzt, wobei während dieser Zeit eine Ultraschall-Beauf­ schlagung erfolgt.The piezoceramic body is etched with a 50% fluoroboric acid (HBF 4 ) to which 1 g / l ammonium hydrogen fluoride (NH 4 HF 2 ) has been added. The piezoceramic bodies to be etched are exposed to the etching liquid at room temperature for 1 minute, during which time ultrasound is applied.

Claims (8)

1. Verfahren zum chemischen Metallisieren von Keramikkörpern, bei dem
  • a) der Keramikkörper zunächst geätzt,
  • b) danach mit einer Palladium-Lösung aktiviert und
  • c) anschließend chemisch metallisiert wird,
1. A process for the chemical metallization of ceramic bodies, in which
  • a) the ceramic body is first etched,
  • b) then activated with a palladium solution and
  • c) is then chemically metallized,
dadurch gekennzeichnet, daß
  • d) bei einem Piezokeramikkörper das Ätzen mit Fluoroborsäure vorgenommen wird.
characterized in that
  • d) in the case of a piezoceramic body, the etching is carried out with fluoroboric acid.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß
  • e) das Ätzen mit Fluoroborsäure mit einer Konzentration von 30 bis 50% bei 20 bis 60°C für eine Zeitdauer zwischen 0,5 bis 5 Minuten vorgenommen wird.
2. The method according to claim 1, characterized in that
  • e) the etching with fluoroboric acid is carried out at a concentration of 30 to 50% at 20 to 60 ° C for a period of between 0.5 to 5 minutes.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß
  • f) das Ätzen der Piezokeramikkörper unter Ultraschall-Beaufschlagung erfolgt.
3. The method according to claim 1 or 2, characterized in that
  • f) the etching of the piezoceramic body is carried out under ultrasound.
4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß
  • g) der Fluoroborsäure 0,2 bis 35 g/l Borsäure zugesetzt wird.
4. The method according to any one of the preceding claims, characterized in that
  • g) 0.2 to 35 g / l boric acid is added to the fluoroboric acid.
5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß
  • h) der Fluoroborsäure 0,2 bis 50 g/l Ammoniumhydrogenfluorid zugesetzt wird.
5. The method according to any one of claims 1 to 3, characterized in that
  • h) 0.2 to 50 g / l of ammonium hydrogen fluoride is added to the fluoroboric acid.
6. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß
  • i) der Fluoroborsäure 0,2 bis 50 g/l Ammoniumfluorid zugesetzt wird.
6. The method according to any one of claims 1 to 3, characterized in that
  • i) 0.2 to 50 g / l of ammonium fluoride is added to the fluoroboric acid.
7. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß
  • j) der Fluoroborsäure 0,5 bis 100 ml/l 40%ige Flußsäure zugesetzt wird.
7. The method according to any one of claims 1 to 3, characterized in that
  • j) 0.5 to 100 ml / l of 40% hydrofluoric acid is added to the fluoroboric acid.
DE19893907902 1989-03-08 1989-03-08 METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES Withdrawn DE3907902A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19893907902 DE3907902A1 (en) 1989-03-08 1989-03-08 METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES
PCT/DE1990/000176 WO1990010609A1 (en) 1989-03-08 1990-03-07 Process for chemical metallization of ceramic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893907902 DE3907902A1 (en) 1989-03-08 1989-03-08 METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES

Publications (1)

Publication Number Publication Date
DE3907902A1 true DE3907902A1 (en) 1990-09-13

Family

ID=6376082

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893907902 Withdrawn DE3907902A1 (en) 1989-03-08 1989-03-08 METHOD FOR CHEMICALLY METALLIZING CERAMIC BODIES

Country Status (2)

Country Link
DE (1) DE3907902A1 (en)
WO (1) WO1990010609A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945267C1 (en) * 1999-09-21 2001-04-19 Bosch Gmbh Robert Method for applying flat external electrodes on a piezoceramic multilayer actuator
CN113088289A (en) * 2021-03-30 2021-07-09 华中科技大学 Etching solution, application thereof and preparation method of high-bonding-strength metal layer on ceramic surface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045007A (en) * 1990-11-19 1991-09-03 Thomson Consumer Electronics, Inc. Method of salvaging a color selection electrode for a CRT
DE69210910T2 (en) * 1991-07-05 1996-12-05 Murata Manufacturing Co Piezoelectric element

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1515566A (en) * 1967-03-23 1968-03-01 Slip Pruf Service Corp Process for increasing the slip resistance of glazed surfaces and concrete
DE1690054A1 (en) * 1967-09-26 1971-04-22 Siemens Ag Electrical component, in particular polarized piezoelectric element with solderable assignments and method for producing the assignments
US4428986A (en) * 1982-11-18 1984-01-31 Eaton Corporation Method of preparing a beryllia substrate for subsequent autocatalytic deposition of a metallized film directly thereon
DE3523956A1 (en) * 1985-07-04 1987-01-08 Licentia Gmbh METHOD FOR CHEMICALLY METALLIZING AN ELECTRICALLY POOR CONDUCTING BODY FROM AN INORGANIC MATERIAL
DE3731167A1 (en) * 1987-09-14 1989-05-11 Schering Ag METHOD FOR ADHESIVE METALIZATION OF EMAILS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945267C1 (en) * 1999-09-21 2001-04-19 Bosch Gmbh Robert Method for applying flat external electrodes on a piezoceramic multilayer actuator
CN113088289A (en) * 2021-03-30 2021-07-09 华中科技大学 Etching solution, application thereof and preparation method of high-bonding-strength metal layer on ceramic surface

Also Published As

Publication number Publication date
WO1990010609A1 (en) 1990-09-20

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