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- Cerium_hexaboride abstract "Cerium hexaboride (CeB6, also called cerium boride, CeBix, CEBIX, and (incorrectly) CeB) is an inorganic chemical, a boride of cerium. It is a refractory ceramic material. It has low work function and one of the highest electron emissivity known, and is stable in vacuum. The principal use of cerium hexaboride is a coating of hot cathodes, or hot cathodes made of cerium hexaboride crystals. It usually operates at temperature of 1450 °C.Lanthanum hexaboride (LaB6) and cerium hexaboride (CeB6) are used as coating of some high-current hot cathodes. Hexaborides show low work function, around 2.5 eV. They are also somewhat resistant to cathode poisoning. Cerium boride cathodes show lower evaporation rate at 1700 K than lanthanum boride, but it becomes equal at 1850 K and higher above that. Cerium boride cathodes have one and half the lifetime of lanthanum boride, due to its higher resistance to carbon contamination. Boride cathodes are about ten times as \"bright\" than the tungsten ones and have 10–15 times longer lifetime. In some laboratory tests, CeB6 has proven to be more resistant to the negative impact of carbon contamination than LaB6. They are used e.g. in electron microscopes, microwave tubes, electron lithography, electron beam welding, X-Ray tubes, and free electron lasers.Cerium hexaboride, like lanthanum hexaboride, slowly evaporates during the cathode operation. In conditions where CeB6 cathodes are operated under 1850 K, CeB6 should maintain its optimum shape longer and therefore last longer. While the process is about 30% slower than with lanthanum boride, the cerium boride deposits are reported to be more difficult to remove.".
- Cerium_hexaboride thumbnail CaHexaboride.jpg?width=300.
- Cerium_hexaboride wikiPageExternalLink www.a-p-tech.com.
- Cerium_hexaboride wikiPageID "5227275".
- Cerium_hexaboride wikiPageLength "3194".
- Cerium_hexaboride wikiPageOutDegree "26".
- Cerium_hexaboride wikiPageRevisionID "670377752".
- Cerium_hexaboride wikiPageWikiLink Boride.
- Cerium_hexaboride wikiPageWikiLink Boron.
- Cerium_hexaboride wikiPageWikiLink Category:Borides.
- Cerium_hexaboride wikiPageWikiLink Category:Ceramic_materials.
- Cerium_hexaboride wikiPageWikiLink Category:Cerium_compounds.
- Cerium_hexaboride wikiPageWikiLink Category:Refractory_materials.
- Cerium_hexaboride wikiPageWikiLink Ceramic.
- Cerium_hexaboride wikiPageWikiLink Cerium.
- Cerium_hexaboride wikiPageWikiLink Electron.
- Cerium_hexaboride wikiPageWikiLink Electron-beam_lithography.
- Cerium_hexaboride wikiPageWikiLink Electron_beam_welding.
- Cerium_hexaboride wikiPageWikiLink Electron_microscope.
- Cerium_hexaboride wikiPageWikiLink Electronvolt.
- Cerium_hexaboride wikiPageWikiLink Free-electron_laser.
- Cerium_hexaboride wikiPageWikiLink Hot_cathode.
- Cerium_hexaboride wikiPageWikiLink Lanthanum_hexaboride.
- Cerium_hexaboride wikiPageWikiLink Microwave.
- Cerium_hexaboride wikiPageWikiLink Refractory.
- Cerium_hexaboride wikiPageWikiLink Tungsten.
- Cerium_hexaboride wikiPageWikiLink Vacuum.
- Cerium_hexaboride wikiPageWikiLink Work_function.
- Cerium_hexaboride wikiPageWikiLink X-ray_tube.
- Cerium_hexaboride wikiPageWikiLink File:Cebixtophat.JPG.
- Cerium_hexaboride wikiPageWikiLinkText "Cerium hexaboride".
- Cerium_hexaboride wikiPageWikiLinkText "cerium hexaboride".
- Cerium_hexaboride imagefile "CaHexaboride.jpg".
- Cerium_hexaboride othernames "cerium boride, ceBIX, CEBIX".
- Cerium_hexaboride verifiedrevid "413928860".
- Cerium_hexaboride wikiPageUsesTemplate Template:Cascite.
- Cerium_hexaboride wikiPageUsesTemplate Template:Cerium_compounds.
- Cerium_hexaboride wikiPageUsesTemplate Template:Chembox.
- Cerium_hexaboride wikiPageUsesTemplate Template:Chembox_Hazards.
- Cerium_hexaboride wikiPageUsesTemplate Template:Chembox_Identifiers.
- Cerium_hexaboride wikiPageUsesTemplate Template:Chembox_Properties.
- Cerium_hexaboride wikiPageUsesTemplate Template:Chembox_Structure.
- Cerium_hexaboride wikiPageUsesTemplate Template:Reflist.
- Cerium_hexaboride subject Category:Borides.
- Cerium_hexaboride subject Category:Ceramic_materials.
- Cerium_hexaboride subject Category:Cerium_compounds.
- Cerium_hexaboride subject Category:Refractory_materials.
- Cerium_hexaboride hypernym Chemical.
- Cerium_hexaboride type ChemicalCompound.
- Cerium_hexaboride type ChemicalSubstance.
- Cerium_hexaboride type Chemical.
- Cerium_hexaboride type Redirect.
- Cerium_hexaboride type ChemicalObject.
- Cerium_hexaboride type Thing.
- Cerium_hexaboride type Q11173.
- Cerium_hexaboride comment "Cerium hexaboride (CeB6, also called cerium boride, CeBix, CEBIX, and (incorrectly) CeB) is an inorganic chemical, a boride of cerium. It is a refractory ceramic material. It has low work function and one of the highest electron emissivity known, and is stable in vacuum. The principal use of cerium hexaboride is a coating of hot cathodes, or hot cathodes made of cerium hexaboride crystals.".
- Cerium_hexaboride label "Cerium hexaboride".
- Cerium_hexaboride sameAs Q3296907.
- Cerium_hexaboride sameAs سداسي_بوريد_سيريوم.
- Cerium_hexaboride sameAs سریم_هگزابورید.
- Cerium_hexaboride sameAs Hexaborure_de_cérium.
- Cerium_hexaboride sameAs Hexaboreto_de_cério.
- Cerium_hexaboride sameAs m.0d8w8c.
- Cerium_hexaboride sameAs Cerijum_heksaborid.
- Cerium_hexaboride sameAs Cerijum_heksaborid.
- Cerium_hexaboride sameAs Q3296907.
- Cerium_hexaboride wasDerivedFrom Cerium_hexaboride?oldid=670377752.
- Cerium_hexaboride depiction CaHexaboride.jpg.
- Cerium_hexaboride isPrimaryTopicOf Cerium_hexaboride.