EP0562977A1 - Verfahren zum Herstellen von keramischen Durchführungsisolatoren durch den Aufbau von mehreren Schichten - Google Patents

Verfahren zum Herstellen von keramischen Durchführungsisolatoren durch den Aufbau von mehreren Schichten Download PDF

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Publication number
EP0562977A1
EP0562977A1 EP93420119A EP93420119A EP0562977A1 EP 0562977 A1 EP0562977 A1 EP 0562977A1 EP 93420119 A EP93420119 A EP 93420119A EP 93420119 A EP93420119 A EP 93420119A EP 0562977 A1 EP0562977 A1 EP 0562977A1
Authority
EP
European Patent Office
Prior art keywords
sheets
screen
bore
ceramic
end faces
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
Application number
EP93420119A
Other languages
English (en)
French (fr)
Other versions
EP0562977B1 (de
Inventor
Armand Bettinelli
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.)
XERAM
Original Assignee
XERAM
N Xeram SA
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 XERAM, N Xeram SA filed Critical XERAM
Publication of EP0562977A1 publication Critical patent/EP0562977A1/de
Application granted granted Critical
Publication of EP0562977B1 publication Critical patent/EP0562977B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/901—Printed circuit
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24926—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including ceramic, glass, porcelain or quartz layer

Definitions

  • the invention relates to a method for obtaining insulating ceramic inserts (for example, beads) serving as a sealed passage for electrically conductive wires or pins through an electrically conductive wall, generally metallic.
  • Insulating ceramic beads are generally in the form of cylindrical parts having an axial bore.
  • the external side wall of the ceramic part and that of the axial bore are metallized separately from one another.
  • FIG. 1 illustrates such a method of the prior art: (1) represents the pearl shaped with its external lateral wall (2), the axial passage (3) comprising for example a central cylindrical part (3a) terminated at each end by a flare (3b); (4) represents the planar ends of the pearl; (5) represents the metallized pearl in part with the metallization layer of the lateral surface (6) and that of the axial bore (7b), separated from each other by the end surfaces (4) not metallic.
  • the whole metallized pearl is shown; this pearl then undergoes a running-in intended to remove the metallization on the end faces (4) so as to obtain a pearl (9) identical to the pearl (5) where the metallization of the lateral surface (6, 10) is isolated that of the axial bore (7.11).
  • Metallization is generally done using metallization inks or pastes having a rheology adapted to the ceramic material and to the device for depositing said ink or paste.
  • the applicant has sought a process for manufacturing pearls, or more generally insulating inserts of any shape, which is more productive while also making it possible to avoid rejects by loss of hermeticity at the solder of the wire. crossing the pearl and increasing the breakdown tension between said wire and the metal wall in which the pearl is brazed, without increasing the dimension of the pearl.
  • the invention is a method of manufacturing insulating ceramic inserts (pieces or beads) comprising a ceramic body delimited by two plane end faces, an external lateral surface of any shape and at least one bore joining the two faces of end, said parts or beads being used as hermetic insulating passages of at least one electrically conductive wire or pin through a wall that is also electrically conductive.
  • This process is characterized in that at least two flat sheets are poured from a slip of insulating ceramic powder to obtain at least two raw sheets, screen-shaped patterns are screen-printed on at least one side of a sheets using a conductive metallization ink or paste, the screen-printed sheet is pressed, then all the sheets are punched to obtain a plurality of holes (corresponding to as many bores), the holes of the screen-printed sheet agreeing with the inside of the crown and having a diameter smaller than that of the holes of the other sheets, the different sheets are stacked by making the axes of the different holes coincide and thus obtaining said bores, we press to agglomerate the sheets between they are cut around at least one bore to obtain the external lateral surface of desired shape and thus make pieces or beads c in the streets, the raw parts or pearls are metallized either only on their external lateral surface or totally and in this case a lapping is then carried out to remove the metallization from the end faces, then heat treatment is carried out to cook and sinter.
  • FIG. 2 is an illustration of the invention which will make it easier to understand it.
  • marks 1, 2 and 3 represent raw sheets poured, for example from a slip typically comprising a 94 to 96% pure alumina powder, a binder and a plasticizer, according to the known techniques of one skilled in the art. Each of these sheets may consist of a stack of elementary sheets.
  • the sheet (2) which, as will be seen below, comprises the cylindrical part of the axial bore and the screen-printed patterns, can advantageously be thicker than the others.
  • the screen printed sheet is then subjected to pressing in order to perfect the adhesion of the metallic paste to the raw ceramic.
  • the screen-printed sheet comprising the cylindrical part of the bore is thus sandwiched between the two non-screen-printed sheets forming the end faces and comprising the openings.
  • the non-screen-printed sheets partially cover the metallized shoulders (9).
  • Said cutout may include one or more bores; it can have any shape.
  • it can be circular and coaxial with said bore to obtain a pearl; it can be rectangular and include a row of bores to finally obtain an insulating insert comprising as many hermetic electrical passages (for wires or pins), said insert possibly constituting a part of an encapsulation box.
  • a ceramic insulating piece or pearl according to the invention therefore comprises a sintered ceramic body (10), two end faces (6) which are not metallized, an external lateral surface (5) metallized (7) and of any shape, at least a bore (4) connecting the two end faces (6), which bore comprises a cylindrical central part (4a), preferably non-metallized, at least one metallized shoulder (9), on which a conductor will be brazed electric crossing the piece or pearl, and at least one ceramic opening, generally not metallized, giving access to said shoulder.
  • This opening giving access to the shoulder and to said cylindrical part is delimited by one of the end faces (6) of the pearl, and the vertical cylindrical wall (4b).
  • this wall (4b) is not metallized, which has an undeniable advantage.
  • the fact that it is not metallized increases the insulating distance separating the metallized shoulder (9) from the metallized external surface (7), which will cause a reduction in leakage currents, and a notable increase in the breakdown voltage between these two metallized parts intended to be brought to different potentials.
  • the method according to the invention makes it possible to obtain a marked improvement in the seal at the level of the subsequent soldering of the conductor (wire or pin) on the metallized shoulder (9) thanks to very good adhesion of the metallization layer obtained during the compression phase of the metallization paste on the raw sheet carried out before punching, and at the burial between two ceramic layers of the metallized ring on part of its surface.
  • This configuration improves the peel strength of the metallization and consequently increases its resistance to tensile-bending exerted on the brazed wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Products (AREA)
  • Insulating Bodies (AREA)
  • Inorganic Insulating Materials (AREA)
EP93420119A 1992-03-23 1993-03-16 Verfahren zum Herstellen von keramischen Durchführungsisolatoren durch den Aufbau von mehreren Schichten Expired - Lifetime EP0562977B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204257 1992-03-23
FR9204257A FR2688929B1 (fr) 1992-03-23 1992-03-23 Procede d'obtention d'inserts ceramiques isolants par empilement multicouches.

Publications (2)

Publication Number Publication Date
EP0562977A1 true EP0562977A1 (de) 1993-09-29
EP0562977B1 EP0562977B1 (de) 1995-11-29

Family

ID=9428597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420119A Expired - Lifetime EP0562977B1 (de) 1992-03-23 1993-03-16 Verfahren zum Herstellen von keramischen Durchführungsisolatoren durch den Aufbau von mehreren Schichten

Country Status (6)

Country Link
US (1) US5346749A (de)
EP (1) EP0562977B1 (de)
JP (1) JP3500162B2 (de)
DE (1) DE69300885T2 (de)
FR (1) FR2688929B1 (de)
IL (1) IL105130A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924520C1 (de) * 1999-05-28 2000-06-21 Schott Glas Kurzflintsondergläser
JP4570576B2 (ja) 2005-03-30 2010-10-27 Ｈｏｙａ株式会社 光学ガラス、プレス成形用プリフォームとその製造方法、および光学素子とその製造方法
US20170013715A1 (en) * 2015-07-10 2017-01-12 Rohde & Schwarz Gmbh & Co. Kg Printed circuit board and corresponding method for producing a printed circuit board
US11258325B2 (en) 2018-10-23 2022-02-22 General Electric Company Articles including insulated conductors and systems thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR942907A (fr) * 1943-10-25 1949-02-22 Thomson Houston Comp Francaise Perfectionnements aux méthodes permettant de déposer des couches métalliques sur de la porcelaine ou du verre
FR1485221A (fr) * 1966-06-30 1967-06-16 Gen Electric Traversée en matière plastique pour appareil électrique et son procédé de fabrication
DE1615033A1 (de) * 1965-09-09 1970-05-27 Siemens Ag Anordnung von Durchfuehrungsisolatoren aus Giessharz
DE2157388A1 (de) * 1971-11-19 1973-05-24 Kabel & Lackdrahtfab Gmbh Isolierstuetzer fuer rohrgaskabel
FR2585181A1 (fr) * 1985-07-16 1987-01-23 Interconnexions Ceramiques Procede de fabrication d'un substrat d'interconnexion pour composants electroniques, et substrat obtenu par sa mise en oeuvre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829981B2 (ja) * 1977-11-09 1983-06-25 株式会社日立製作所 顔料付着けい光体の製造方法
JPS6038868B2 (ja) * 1981-11-06 1985-09-03 富士通株式会社 半導体パツケ−ジ
FR2564826B1 (fr) * 1984-05-25 1986-08-22 Thomson Csf Procede d'assemblage d'au moins deux pieces en ceramique, presentant chacune au moins une surface plane
US4766671A (en) * 1985-10-29 1988-08-30 Nec Corporation Method of manufacturing ceramic electronic device
US4830704A (en) * 1988-01-29 1989-05-16 Rockwell International Corporation Method of manufacture of a wiring board
JP2615151B2 (ja) * 1988-08-19 1997-05-28 株式会社村田製作所 チップ型コイル及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR942907A (fr) * 1943-10-25 1949-02-22 Thomson Houston Comp Francaise Perfectionnements aux méthodes permettant de déposer des couches métalliques sur de la porcelaine ou du verre
DE1615033A1 (de) * 1965-09-09 1970-05-27 Siemens Ag Anordnung von Durchfuehrungsisolatoren aus Giessharz
FR1485221A (fr) * 1966-06-30 1967-06-16 Gen Electric Traversée en matière plastique pour appareil électrique et son procédé de fabrication
DE2157388A1 (de) * 1971-11-19 1973-05-24 Kabel & Lackdrahtfab Gmbh Isolierstuetzer fuer rohrgaskabel
FR2585181A1 (fr) * 1985-07-16 1987-01-23 Interconnexions Ceramiques Procede de fabrication d'un substrat d'interconnexion pour composants electroniques, et substrat obtenu par sa mise en oeuvre

Also Published As

Publication number Publication date
IL105130A (en) 1996-01-19
IL105130A0 (en) 1993-07-08
FR2688929B1 (fr) 1994-05-20
JP3500162B2 (ja) 2004-02-23
DE69300885T2 (de) 1996-05-23
JPH06176618A (ja) 1994-06-24
DE69300885D1 (de) 1996-01-11
US5346749A (en) 1994-09-13
EP0562977B1 (de) 1995-11-29
FR2688929A1 (fr) 1993-09-24

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