JPS6432799A - Diaphragm for electroacoustic transducer - Google Patents

Diaphragm for electroacoustic transducer

Info

Publication number
JPS6432799A
JPS6432799A JP18956387A JP18956387A JPS6432799A JP S6432799 A JPS6432799 A JP S6432799A JP 18956387 A JP18956387 A JP 18956387A JP 18956387 A JP18956387 A JP 18956387A JP S6432799 A JPS6432799 A JP S6432799A
Authority
JP
Japan
Prior art keywords
diaphragm
film
base substance
hardness
amolphous
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.)
Granted
Application number
JP18956387A
Other languages
Japanese (ja)
Other versions
JPH0648872B2 (en
Inventor
Tetsuo Kawai
Michizo Saeki
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.)
Onkyo Corp
Proterial Ltd
Original Assignee
Onkyo Corp
Hitachi Metals Ltd
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 Onkyo Corp, Hitachi Metals Ltd filed Critical Onkyo Corp
Priority to JP62189563A priority Critical patent/JPH0648872B2/en
Publication of JPS6432799A publication Critical patent/JPS6432799A/en
Publication of JPH0648872B2 publication Critical patent/JPH0648872B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To supply the highly rigid diaphragm of a stable quality, light in weight and a high Young factor by forming the amolphous form nitride film of a high Young's modulus at a lower temperature not to cause a heat deformation to a base substance by a reduced pressure CVD method on a diaphragm base substance. CONSTITUTION:A light weight metal is used for a diaphragm base substance. When the amolphous boron nitride film is formed on the diaphragm base substance surface, the film is formed at a temperature which a residual stress does not remain by the reduced pressure CVS method. The hardness of the said film is Vickers hardness Hv 1000-3500 and a suitable Young's modulus and a peeling hardness are obtained. The thickness of the film is the range of 0.1-5mum.
JP62189563A 1987-07-29 1987-07-29 Vibration plate for electro-acoustic transducer Expired - Lifetime JPH0648872B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62189563A JPH0648872B2 (en) 1987-07-29 1987-07-29 Vibration plate for electro-acoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189563A JPH0648872B2 (en) 1987-07-29 1987-07-29 Vibration plate for electro-acoustic transducer

Publications (2)

Publication Number Publication Date
JPS6432799A true JPS6432799A (en) 1989-02-02
JPH0648872B2 JPH0648872B2 (en) 1994-06-22

Family

ID=16243427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189563A Expired - Lifetime JPH0648872B2 (en) 1987-07-29 1987-07-29 Vibration plate for electro-acoustic transducer

Country Status (1)

Country Link
JP (1) JPH0648872B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047028B2 (en) 2002-11-15 2006-05-16 Telefonaktiebolaget Lm Ericsson (Publ) Optical fiber coupling configurations for a main-remote radio base station and a hybrid radio base station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047028B2 (en) 2002-11-15 2006-05-16 Telefonaktiebolaget Lm Ericsson (Publ) Optical fiber coupling configurations for a main-remote radio base station and a hybrid radio base station

Also Published As

Publication number Publication date
JPH0648872B2 (en) 1994-06-22

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