JPS5442970A - Manufactue of thermionic cathode for electron tube - Google Patents

Manufactue of thermionic cathode for electron tube

Info

Publication number
JPS5442970A
JPS5442970A JP10913577A JP10913577A JPS5442970A JP S5442970 A JPS5442970 A JP S5442970A JP 10913577 A JP10913577 A JP 10913577A JP 10913577 A JP10913577 A JP 10913577A JP S5442970 A JPS5442970 A JP S5442970A
Authority
JP
Japan
Prior art keywords
manufactue
electron tube
thermionic cathode
thermionic
cathode
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
JP10913577A
Other languages
Japanese (ja)
Other versions
JPS5719546B2 (en
Inventor
Hideo Koizumi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10913577A priority Critical patent/JPS5442970A/en
Publication of JPS5442970A publication Critical patent/JPS5442970A/en
Publication of JPS5719546B2 publication Critical patent/JPS5719546B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To increase the intensity as well as to prevent occurrence of cracks by applying the etching treatment to the porous cylindrical substance of W which is formed with a comparatively high density of 16.0 - 17.5g/cm2 and then impregnating Th.
COPYRIGHT: (C)1979,JPO&Japio
JP10913577A 1977-09-10 1977-09-10 Manufactue of thermionic cathode for electron tube Granted JPS5442970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10913577A JPS5442970A (en) 1977-09-10 1977-09-10 Manufactue of thermionic cathode for electron tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10913577A JPS5442970A (en) 1977-09-10 1977-09-10 Manufactue of thermionic cathode for electron tube

Publications (2)

Publication Number Publication Date
JPS5442970A true JPS5442970A (en) 1979-04-05
JPS5719546B2 JPS5719546B2 (en) 1982-04-23

Family

ID=14502461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10913577A Granted JPS5442970A (en) 1977-09-10 1977-09-10 Manufactue of thermionic cathode for electron tube

Country Status (1)

Country Link
JP (1) JPS5442970A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180621A (en) * 1984-09-28 1986-04-24 Matsushita Electric Ind Co Ltd Tape recorder

Also Published As

Publication number Publication date
JPS5719546B2 (en) 1982-04-23

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