JPS5394760A - Manufacture of electron tube chthode - Google Patents

Manufacture of electron tube chthode

Info

Publication number
JPS5394760A
JPS5394760A JP865977A JP865977A JPS5394760A JP S5394760 A JPS5394760 A JP S5394760A JP 865977 A JP865977 A JP 865977A JP 865977 A JP865977 A JP 865977A JP S5394760 A JPS5394760 A JP S5394760A
Authority
JP
Japan
Prior art keywords
chthode
manufacture
electron tube
cathode
oxide
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
JP865977A
Other languages
Japanese (ja)
Inventor
Toshiyuki Aida
Isamu Yuhito
Sanehiro Kudo
Hiroshi Okano
Akira Misumi
Seiji Kumada
Shigeo Shimomura
Misao Ishikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP865977A priority Critical patent/JPS5394760A/en
Publication of JPS5394760A publication Critical patent/JPS5394760A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: Carbonyl Ni powder is treated in the unoxidizing atmosphere by a ball mill to be adhered to the cathode surface and the coating with alkaline earth oxide is done at the fixed density, thereby preventing the deformation of the cathode by breaking of the oxide.
COPYRIGHT: (C)1978,JPO&Japio
JP865977A 1977-01-31 1977-01-31 Manufacture of electron tube chthode Pending JPS5394760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP865977A JPS5394760A (en) 1977-01-31 1977-01-31 Manufacture of electron tube chthode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP865977A JPS5394760A (en) 1977-01-31 1977-01-31 Manufacture of electron tube chthode

Publications (1)

Publication Number Publication Date
JPS5394760A true JPS5394760A (en) 1978-08-19

Family

ID=11699049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP865977A Pending JPS5394760A (en) 1977-01-31 1977-01-31 Manufacture of electron tube chthode

Country Status (1)

Country Link
JP (1) JPS5394760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219310A (en) * 1991-03-13 1993-06-15 Sony Corporation Method for producing planar electron radiating device
US5713775A (en) * 1995-05-02 1998-02-03 Massachusetts Institute Of Technology Field emitters of wide-bandgap materials and methods for their fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219310A (en) * 1991-03-13 1993-06-15 Sony Corporation Method for producing planar electron radiating device
US5713775A (en) * 1995-05-02 1998-02-03 Massachusetts Institute Of Technology Field emitters of wide-bandgap materials and methods for their fabrication

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