JPS5735497A - Boron processing method for metallic diaphragm - Google Patents

Boron processing method for metallic diaphragm

Info

Publication number
JPS5735497A
JPS5735497A JP11093780A JP11093780A JPS5735497A JP S5735497 A JPS5735497 A JP S5735497A JP 11093780 A JP11093780 A JP 11093780A JP 11093780 A JP11093780 A JP 11093780A JP S5735497 A JPS5735497 A JP S5735497A
Authority
JP
Japan
Prior art keywords
boron
metallic diaphragm
diaphragm
high purity
boron processing
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
JP11093780A
Other languages
Japanese (ja)
Inventor
Tsutomu Hiroki
Yoshiro Shimamune
Minetaro Hirose
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP11093780A priority Critical patent/JPS5735497A/en
Publication of JPS5735497A publication Critical patent/JPS5735497A/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 execute safe and uniform boron processing, by subjecting a metallic diaphragm to the boron processing through heating the metallic diaphragm and high purity boron in a vacuum vessel. CONSTITUTION:A titanium diaphragm 16 is held on a frame 12 located on a dish 13 spreading high purity boron 11 in a heat resistant vessel 14, the vessel 14 is evacuated to a high vacuum (10<-6>-10<-8> Torr.) and it is heated to 900-1,200 deg.C the heater 10 in a furnace 15. In this case, the high purity boron 11 is gasified and reaches a titanium diaphragm 16 through a gas vent 8 to subject the same to boron processing.
JP11093780A 1980-08-11 1980-08-11 Boron processing method for metallic diaphragm Pending JPS5735497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11093780A JPS5735497A (en) 1980-08-11 1980-08-11 Boron processing method for metallic diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11093780A JPS5735497A (en) 1980-08-11 1980-08-11 Boron processing method for metallic diaphragm

Publications (1)

Publication Number Publication Date
JPS5735497A true JPS5735497A (en) 1982-02-26

Family

ID=14548359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11093780A Pending JPS5735497A (en) 1980-08-11 1980-08-11 Boron processing method for metallic diaphragm

Country Status (1)

Country Link
JP (1) JPS5735497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138153U (en) * 1988-03-15 1989-09-21
JPH03232048A (en) * 1989-11-09 1991-10-16 Sharp Corp Portable electronic financial calculator and planner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01138153U (en) * 1988-03-15 1989-09-21
JPH03232048A (en) * 1989-11-09 1991-10-16 Sharp Corp Portable electronic financial calculator and planner

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