JPS5660195A - Diaphragm for electroacoustic transducer and its manufacture - Google Patents
Diaphragm for electroacoustic transducer and its manufactureInfo
- Publication number
- JPS5660195A JPS5660195A JP13611179A JP13611179A JPS5660195A JP S5660195 A JPS5660195 A JP S5660195A JP 13611179 A JP13611179 A JP 13611179A JP 13611179 A JP13611179 A JP 13611179A JP S5660195 A JPS5660195 A JP S5660195A
- Authority
- JP
- Japan
- Prior art keywords
- boron
- amorphous
- titanium
- coating layer
- layer
- 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
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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
PURPOSE:To make it possible to obtain sufficient performance by relatively-low- temperature and short-time procession without the need for power removal by changing an amorphous boron coating layer, applied to the surface of a diaphragm base made of titanium, into a hard film. CONSTITUTION:The surface of diaphragm base 4 made of titanium is applied with amorphous boron to form a coating layer of it. Diaphragm base 4 having the amorphous boron coating layer like this is contained in vacuum container 7. Alkali earth metal powder 6 is also placed in vacuum container 7, which is evacuated and heated. When magnesium powder is used as earth metal powder 6, container 7 is filled with magnesium vapor at a heating temperature of about 1,000 deg.C. Then, the amorphous coating layer has the gap of amorphous boron powder filled with boron atoms carried by the magnesium vapor and changes into boron film 15 of glass. In titanium layer 1, boron atoms are diffused and boron diffused layer 3 is formed on the surface of titanium layer 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13611179A JPS5660195A (en) | 1979-10-22 | 1979-10-22 | Diaphragm for electroacoustic transducer and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13611179A JPS5660195A (en) | 1979-10-22 | 1979-10-22 | Diaphragm for electroacoustic transducer and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5660195A true JPS5660195A (en) | 1981-05-23 |
Family
ID=15167542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13611179A Pending JPS5660195A (en) | 1979-10-22 | 1979-10-22 | Diaphragm for electroacoustic transducer and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5660195A (en) |
-
1979
- 1979-10-22 JP JP13611179A patent/JPS5660195A/en active Pending
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