DE467594C - Method of manufacturing piezo-electric plates - Google Patents

Method of manufacturing piezo-electric plates

Info

Publication number
DE467594C
DE467594C DET33819D DET0033819D DE467594C DE 467594 C DE467594 C DE 467594C DE T33819 D DET33819 D DE T33819D DE T0033819 D DET0033819 D DE T0033819D DE 467594 C DE467594 C DE 467594C
Authority
DE
Germany
Prior art keywords
electric plates
plates
piezo
manufacturing piezo
manufacturing
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
DET33819D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken 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 Telefunken AG filed Critical Telefunken AG
Priority to DET33819D priority Critical patent/DE467594C/en
Priority claimed from US277017A external-priority patent/US1869160A/en
Application granted granted Critical
Publication of DE467594C publication Critical patent/DE467594C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Description

Verfahren zur Herstellung piezo-elektrischer Platten Es hat sich herausgestellt. daß bei der Herstellung von- Quarzplatten für piezoelektrische Zwecke (Schwingungserzeugung oder Schwingungskontrolle) sehr oft aus dem Ouarzkristall geschnittenePlatten nicht piezoelektrisch einwandfrei sind bz«-. zu große Dämpfung zeigen. Diese Fehler der Quarzplatten sind darauf zurückzuführen, daß bei dem Ausschneiden der Platten einzelne Siliziummoleküle bei der Sprengung der einzelnen Zellen an den Oberflächen der \ achbarzellen haften geblieben sind und dadurch die Zellen an ihrer pnezo-elektrischen Wirkung behindern. Behandelt man die Platten' min mit Flußsäure, so «-erden alle die Moleküle, welche nicht fest im Verband der Ouarzstruktur sind, durch die Flußsäure abgelöst, Solche 'Moleküle dagegen, die zu einer vollständigen Strukturzelle gehören - und das sind diejenigen, die für die piezo-elektrische Wirkung gerade in Betracht kommen -, sind so im Verband der Strukturzellen festgehalten. daß sie durch Flußsäure gar nicht oder nur schwer abgelöst werden können.Method of Making Piezo-Electric Plates It has been found. that in the manufacture of quartz plates for piezoelectric purposes (vibration generation or vibration control) very often plates cut from the quartz crystal do not piezoelectrically flawless are bz «-. show too much attenuation. These errors of the Quartz plates are due to the fact that when the plates are cut out individual Silicon molecules when the individual cells explode on the surfaces of the \ Neighboring cells have stuck and thereby the cells at their pnezo-electric Hinder effect. If the plates are treated with hydrofluoric acid, they all earth the molecules, which are not firmly in the association of the orange structure, by the hydrofluoric acid replaced by 'such' molecules, on the other hand, which belong to a complete structural cell - and these are the ones that are just being considered for the piezo-electric effect come - are thus recorded in the association of structural cells. that they by hydrofluoric acid cannot be removed or can only be removed with difficulty.

Claims (1)

PATLNNTANSPKUCli: Verfahren zur Herstellung piezo-elektrischer Platten, dadurch gekennzeichnet, daß die Platten nach dem Schneiden mit Fluß:äure.behandelt werden.PATLNNTANSPKUCli: method of making piezo-electric plates, characterized in that, after cutting, the panels are treated with flux: aure will.
DET33819D 1927-07-28 1927-07-28 Method of manufacturing piezo-electric plates Expired DE467594C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET33819D DE467594C (en) 1927-07-28 1927-07-28 Method of manufacturing piezo-electric plates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET33819D DE467594C (en) 1927-07-28 1927-07-28 Method of manufacturing piezo-electric plates
US277017A US1869160A (en) 1928-05-11 1928-05-11 Piezo-electric resonator

Publications (1)

Publication Number Publication Date
DE467594C true DE467594C (en) 1928-10-26

Family

ID=26000333

Family Applications (1)

Application Number Title Priority Date Filing Date
DET33819D Expired DE467594C (en) 1927-07-28 1927-07-28 Method of manufacturing piezo-electric plates

Country Status (1)

Country Link
DE (1) DE467594C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479286A (en) * 1944-11-21 1949-08-16 Bliley Electric Company Production of piezoelectric crystals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479286A (en) * 1944-11-21 1949-08-16 Bliley Electric Company Production of piezoelectric crystals

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