Matches in SemOpenAlex for { <https://semopenalex.org/work/W136622616> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W136622616 abstract "The thermonic-emission current density is studied as a function of the operating time of directly heated rod cathodes made of sintered ZrC-W alloys (20--98 wt. % W) and pure ZrC. The experiments are carried out at pressures below 2 x 10/sup -7/ torr at T=2300/sup 0/K. The emission current becomes stable after approx.40 h of continuous cathode operation. With alloys containing 45--75% W at T=2300/sup 0/K it is possible to obtain emission current densities at the level of 7.5--9 A/cm/sup 2/, while the emission current density for pure ZrC does not exceed 4 A/cm/sup 2/. In the operation of cathodes made from ZrC-W alloys, rings of nearly pure W (with Zr and C impurities) form on the cathode because of the evaporation of ZrC from the peripheral part of the cathode. The results found in measurements of the emission current density at the end of the tests (after 100 h of operation) are used to calculate the effective work function (phi/sub 2300//sub degree/), which passes through a very shallow minimum (reaching 3.56 eV) in the ZrC-W system at a tungsten concentration of 35--85%. For cathodes containing less than 20% or more than 85% W, the value of phi/sub 2300//sub degree/more » is a strong function of the composition. It is suggested that cathodes made from alloys containing 20--85% W are cathodes of the film type (films of Zr and C adatoms on the surface of the tungsten ring); at other compositions these cathodes are patchy. (AIP)« less" @default.
- W136622616 created "2016-06-24" @default.
- W136622616 creator A5028210786 @default.
- W136622616 creator A5042044284 @default.
- W136622616 creator A5067136489 @default.
- W136622616 creator A5078535500 @default.
- W136622616 creator A5079466313 @default.
- W136622616 date "1976-03-01" @default.
- W136622616 modified "2023-09-27" @default.
- W136622616 title "Variation of emission properties with composition of ZrC + W alloys" @default.
- W136622616 hasPublicationYear "1976" @default.
- W136622616 type Work @default.
- W136622616 sameAs 136622616 @default.
- W136622616 citedByCount "0" @default.
- W136622616 crossrefType "journal-article" @default.
- W136622616 hasAuthorship W136622616A5028210786 @default.
- W136622616 hasAuthorship W136622616A5042044284 @default.
- W136622616 hasAuthorship W136622616A5067136489 @default.
- W136622616 hasAuthorship W136622616A5078535500 @default.
- W136622616 hasAuthorship W136622616A5079466313 @default.
- W136622616 hasConcept C113196181 @default.
- W136622616 hasConcept C115235246 @default.
- W136622616 hasConcept C121332964 @default.
- W136622616 hasConcept C147789679 @default.
- W136622616 hasConcept C178790620 @default.
- W136622616 hasConcept C185592680 @default.
- W136622616 hasConcept C191897082 @default.
- W136622616 hasConcept C192562407 @default.
- W136622616 hasConcept C207740977 @default.
- W136622616 hasConcept C43617362 @default.
- W136622616 hasConcept C49110097 @default.
- W136622616 hasConcept C542268612 @default.
- W136622616 hasConcept C544153396 @default.
- W136622616 hasConcept C61441594 @default.
- W136622616 hasConcept C62520636 @default.
- W136622616 hasConcept C71987851 @default.
- W136622616 hasConcept C97355855 @default.
- W136622616 hasConceptScore W136622616C113196181 @default.
- W136622616 hasConceptScore W136622616C115235246 @default.
- W136622616 hasConceptScore W136622616C121332964 @default.
- W136622616 hasConceptScore W136622616C147789679 @default.
- W136622616 hasConceptScore W136622616C178790620 @default.
- W136622616 hasConceptScore W136622616C185592680 @default.
- W136622616 hasConceptScore W136622616C191897082 @default.
- W136622616 hasConceptScore W136622616C192562407 @default.
- W136622616 hasConceptScore W136622616C207740977 @default.
- W136622616 hasConceptScore W136622616C43617362 @default.
- W136622616 hasConceptScore W136622616C49110097 @default.
- W136622616 hasConceptScore W136622616C542268612 @default.
- W136622616 hasConceptScore W136622616C544153396 @default.
- W136622616 hasConceptScore W136622616C61441594 @default.
- W136622616 hasConceptScore W136622616C62520636 @default.
- W136622616 hasConceptScore W136622616C71987851 @default.
- W136622616 hasConceptScore W136622616C97355855 @default.
- W136622616 hasLocation W1366226161 @default.
- W136622616 hasOpenAccess W136622616 @default.
- W136622616 hasPrimaryLocation W1366226161 @default.
- W136622616 hasRelatedWork W153709108 @default.
- W136622616 hasRelatedWork W1558190969 @default.
- W136622616 hasRelatedWork W2226965301 @default.
- W136622616 hasRelatedWork W2915638270 @default.
- W136622616 hasRelatedWork W2952315441 @default.
- W136622616 hasRelatedWork W2986670845 @default.
- W136622616 hasRelatedWork W3192240569 @default.
- W136622616 hasRelatedWork W150588336 @default.
- W136622616 hasRelatedWork W2845536243 @default.
- W136622616 isParatext "false" @default.
- W136622616 isRetracted "false" @default.
- W136622616 magId "136622616" @default.
- W136622616 workType "article" @default.