DE1916849A1 - Ultraschallwandler und Verfahren zu seiner Herstellung - Google Patents

Ultraschallwandler und Verfahren zu seiner Herstellung

Info

Publication number
DE1916849A1
DE1916849A1 DE19691916849 DE1916849A DE1916849A1 DE 1916849 A1 DE1916849 A1 DE 1916849A1 DE 19691916849 DE19691916849 DE 19691916849 DE 1916849 A DE1916849 A DE 1916849A DE 1916849 A1 DE1916849 A1 DE 1916849A1
Authority
DE
Germany
Prior art keywords
crystal
powder
plastic
piezoelectric
composite
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
Application number
DE19691916849
Other languages
German (de)
English (en)
Inventor
Henry Woollaston
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.)
United Kingdom Atomic Energy Authority
Original Assignee
United Kingdom Atomic Energy Authority
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 United Kingdom Atomic Energy Authority filed Critical United Kingdom Atomic Energy Authority
Publication of DE1916849A1 publication Critical patent/DE1916849A1/de
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/028—Electrets, i.e. having a permanently-polarised dielectric having a heterogeneous dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
    • H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/852—Composite materials, e.g. having 1-3 or 2-2 type connectivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
DE19691916849 1968-04-03 1969-04-02 Ultraschallwandler und Verfahren zu seiner Herstellung Pending DE1916849A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1604868 1968-04-03

Publications (1)

Publication Number Publication Date
DE1916849A1 true DE1916849A1 (de) 1969-11-06

Family

ID=10070199

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691916849 Pending DE1916849A1 (de) 1968-04-03 1969-04-02 Ultraschallwandler und Verfahren zu seiner Herstellung

Country Status (3)

Country Link
DE (1) DE1916849A1 (cg-RX-API-DMAC10.html)
GB (1) GB1266145A (cg-RX-API-DMAC10.html)
NL (1) NL6905280A (cg-RX-API-DMAC10.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492074A1 (fr) * 1980-10-11 1982-04-16 Pfeiffer Vakuumtechnik Installation pour rechauffer et secher des pieces sous vide par condensation de vapeur et separation d'un second liquide a point d'ebullition plus eleve
DE3208456A1 (de) * 1982-03-09 1983-09-22 Siemens AG, 1000 Berlin und 8000 München Piezoelektrisches schwingsystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124664A (en) 1998-05-01 2000-09-26 Scimed Life Systems, Inc. Transducer backing material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492074A1 (fr) * 1980-10-11 1982-04-16 Pfeiffer Vakuumtechnik Installation pour rechauffer et secher des pieces sous vide par condensation de vapeur et separation d'un second liquide a point d'ebullition plus eleve
DE3208456A1 (de) * 1982-03-09 1983-09-22 Siemens AG, 1000 Berlin und 8000 München Piezoelektrisches schwingsystem

Also Published As

Publication number Publication date
GB1266145A (cg-RX-API-DMAC10.html) 1972-03-08
NL6905280A (cg-RX-API-DMAC10.html) 1969-10-07

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