GB706993A - Method of improving the polarization of piezoelectric materials - Google Patents

Method of improving the polarization of piezoelectric materials

Info

Publication number
GB706993A
GB706993A GB12215/51A GB1221551A GB706993A GB 706993 A GB706993 A GB 706993A GB 12215/51 A GB12215/51 A GB 12215/51A GB 1221551 A GB1221551 A GB 1221551A GB 706993 A GB706993 A GB 706993A
Authority
GB
United Kingdom
Prior art keywords
batch
ceramic
polarizing field
piezo
electric
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.)
Expired
Application number
GB12215/51A
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.)
Globe Union Inc
Original Assignee
Globe Union Inc
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 Globe Union Inc filed Critical Globe Union Inc
Priority to GB12215/51A priority Critical patent/GB706993A/en
Publication of GB706993A publication Critical patent/GB706993A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

706,993. Piezo-electric crystals. DEHN, F. B. (Globe-Union, Inc.). May 24, 1951, No. 12215/51. Drawings to Specification. Class 40 (8) In treating a metallic titanate ceramic to give it piezo-electric properties by raising its temperature above its Curie point and then applying a unidirectional electric polarizing field while the ceramic cools to a temperature below the Curie point, a number of samples from each batch of ceramic preparation are treated, each under a different polarizing voltage to determine the optimum polarizing field for each particular batch and cooling time. The voltage used with the sample that shows the best effect after treatment is then used for the treatment of the remainder of the batch. A barium titanate may be used and the polarizing field may be between 15 and 50 volts over one thousandth of an inch. Specification 673,729 is referred to.
GB12215/51A 1951-05-24 1951-05-24 Method of improving the polarization of piezoelectric materials Expired GB706993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB12215/51A GB706993A (en) 1951-05-24 1951-05-24 Method of improving the polarization of piezoelectric materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12215/51A GB706993A (en) 1951-05-24 1951-05-24 Method of improving the polarization of piezoelectric materials

Publications (1)

Publication Number Publication Date
GB706993A true GB706993A (en) 1954-04-07

Family

ID=10000462

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12215/51A Expired GB706993A (en) 1951-05-24 1951-05-24 Method of improving the polarization of piezoelectric materials

Country Status (1)

Country Link
GB (1) GB706993A (en)

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