JPS5291642A - Direct-heated cathode structure - Google Patents

Direct-heated cathode structure

Info

Publication number
JPS5291642A
JPS5291642A JP749776A JP749776A JPS5291642A JP S5291642 A JPS5291642 A JP S5291642A JP 749776 A JP749776 A JP 749776A JP 749776 A JP749776 A JP 749776A JP S5291642 A JPS5291642 A JP S5291642A
Authority
JP
Japan
Prior art keywords
direct
cathode structure
heated cathode
substrate
bao
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
JP749776A
Other languages
Japanese (ja)
Inventor
Akira Misumi
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 JP749776A priority Critical patent/JPS5291642A/en
Publication of JPS5291642A publication Critical patent/JPS5291642A/en
Pending legal-status Critical Current

Links

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE: To prevent oxides such as BaO from peeling-off from a substrate by the provision of a Zr metal layer on the carbonate coated surface of a substrate composed of W-containing Ni alloy.
COPYRIGHT: (C)1977,JPO&Japio
JP749776A 1976-01-28 1976-01-28 Direct-heated cathode structure Pending JPS5291642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP749776A JPS5291642A (en) 1976-01-28 1976-01-28 Direct-heated cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP749776A JPS5291642A (en) 1976-01-28 1976-01-28 Direct-heated cathode structure

Publications (1)

Publication Number Publication Date
JPS5291642A true JPS5291642A (en) 1977-08-02

Family

ID=11667401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP749776A Pending JPS5291642A (en) 1976-01-28 1976-01-28 Direct-heated cathode structure

Country Status (1)

Country Link
JP (1) JPS5291642A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149566A (en) * 1978-05-17 1979-11-22 Hitachi Ltd Manufacture of directly-heated oxide cathode
JPS5537755A (en) * 1978-09-11 1980-03-15 Hitachi Ltd Production method of direct heating oxcide cathode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149566A (en) * 1978-05-17 1979-11-22 Hitachi Ltd Manufacture of directly-heated oxide cathode
JPS6243298B2 (en) * 1978-05-17 1987-09-12 Hitachi Ltd
JPS5537755A (en) * 1978-09-11 1980-03-15 Hitachi Ltd Production method of direct heating oxcide cathode

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