JPS5755698A - Manufacture of acoustic vibrating material - Google Patents

Manufacture of acoustic vibrating material

Info

Publication number
JPS5755698A
JPS5755698A JP13106980A JP13106980A JPS5755698A JP S5755698 A JPS5755698 A JP S5755698A JP 13106980 A JP13106980 A JP 13106980A JP 13106980 A JP13106980 A JP 13106980A JP S5755698 A JPS5755698 A JP S5755698A
Authority
JP
Japan
Prior art keywords
boron
film
plasma
electric field
produce
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
JP13106980A
Other languages
Japanese (ja)
Inventor
Akio Kawasaki
Masato Yamamura
Masakata Ugaji
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP13106980A priority Critical patent/JPS5755698A/en
Publication of JPS5755698A publication Critical patent/JPS5755698A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To produce an acoustic vibrating material of B4C by forming a B4C film adhered to a substrate by accelerating synthetic B4C in a high electric field. CONSTITUTION:A boron single element 3 is vaporized and hydrocarbon gas, such as acetylene and methane, is made into plasma. In the plasma, the boron element and a carbon element are made to react on each other chemically (vapor-phase reaction) to produce B4C, which is accelerated in a high electric field to be deposited on the surface of a titanium base material 4, thus forming a B4C film. In this case, reaction conditions, such as the vaporing speed of boron and hydrocarbon gas pressure (gas concn.) are selected properly to obtain the B4C film close to stoichiometric composition (78.3wt% B and 21.7wt% C).
JP13106980A 1980-09-20 1980-09-20 Manufacture of acoustic vibrating material Pending JPS5755698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13106980A JPS5755698A (en) 1980-09-20 1980-09-20 Manufacture of acoustic vibrating material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13106980A JPS5755698A (en) 1980-09-20 1980-09-20 Manufacture of acoustic vibrating material

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP3704787A Division JPS62271598A (en) 1987-02-20 1987-02-20 Acoustic vibrating material
JP3704887A Division JPS62271599A (en) 1987-02-20 1987-02-20 Acoustic vibrating material and its manufacture

Publications (1)

Publication Number Publication Date
JPS5755698A true JPS5755698A (en) 1982-04-02

Family

ID=15049267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13106980A Pending JPS5755698A (en) 1980-09-20 1980-09-20 Manufacture of acoustic vibrating material

Country Status (1)

Country Link
JP (1) JPS5755698A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185489A (en) * 1984-03-02 1985-09-20 Onkyo Corp Diaphragm for electroacoustic transducer
JPS60186196A (en) * 1984-03-05 1985-09-21 Onkyo Corp Diaphragm for electroacoustic transducer and its manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5265419A (en) * 1975-11-26 1977-05-30 Denki Kagaku Kogyo Kk Method of producing speaker vibrator plate
JPS5469425A (en) * 1977-11-12 1979-06-04 Mitsubishi Metal Corp Acoustic converter double layer vibrator and method of fabricating same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5265419A (en) * 1975-11-26 1977-05-30 Denki Kagaku Kogyo Kk Method of producing speaker vibrator plate
JPS5469425A (en) * 1977-11-12 1979-06-04 Mitsubishi Metal Corp Acoustic converter double layer vibrator and method of fabricating same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185489A (en) * 1984-03-02 1985-09-20 Onkyo Corp Diaphragm for electroacoustic transducer
JPS60186196A (en) * 1984-03-05 1985-09-21 Onkyo Corp Diaphragm for electroacoustic transducer and its manufacture

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