Tuam Tshoj Supplier Cerium Hexaboride Powder CAS 12008-02-5 CeB6 Hmoov Nqe Cerium Boride
Cov ntaub ntawv luv luv:
Nta ntawmCerium Boride hmoov:
Khoom: Cerium hexaborate (CeB6, tseem hu ua cerium borate, CeBix, CEBIX, qee zaum sau ua CeB) yog ib qho inorganic compound. Cerium hexaborate (CeB6) muaj cov qauv CsCl (uas yog ib qho yooj yim cubic crystal system, nrog loj spheres sawv cev rau Ce keeb). Qhov txawv yog tias pawg B6 octahedral tuav txoj haujlwm ntawm Cl, thaum Ce tuav txoj haujlwm ntawm Cs.
Nws yog cov khoom siv refractory ceramic nrog kev ua haujlwm qis, ua rau nws yog ib qho ntawm cov khoom siv cathode paub nrog lub siab tshaj plaws electron emissivity, thiab nws kuj tseem ruaj khov hauv lub tshuab nqus tsev. Qhov kub thiab txias ua haujlwm ntawm cerium hexaborate yog 1450 ° C. Cerium hexaborate, zoo li lanthanum hexaborate, yuav maj mam evaporate thaum lub sijhawm ua haujlwm cathode.
CeB6 cathode tuaj yeem tswj tau nws cov duab zoo rau lub sijhawm ntev ntawm kev ua haujlwm kub ntawm 1850 K, ua rau lub neej ntev dua. Lub caij no, vim nws cov evaporation tus nqi yog kwv yees li 30% qeeb dua li ntawm lanthanum borate, thermal cathode txheej ntawm cerium borate kuj nyuaj rau tshem tawm dua li lanthanum borate.
Cov ntaub ntawv technical ntawm Cerium Boride:
| Yam khoom | Test tau% |
| B | 31.6 ib |
| Ce | 67.9 ib |
| Si | 0.0004 |
| Mg | 0.0001 |
| Mn | 0.0001 |
| Fe | 0.01 ib |
| Ca | 0.003 ib |
| Cu | 0.0002 |
| Cr | 0.0001 |
Kev siv Cerium Boride:
Cerium boride feem ntau yog siv los ua txheej rau kub cathodes, los yog kub cathodes ncaj qha los ntawm cerium hexaborate crystals. Cerium hexaboride (CeB6) thiab lanthanum hexaboride (LaB6) feem ntau yog siv los ua cov txheej txheem cathode tam sim no. Hexaborides muaj qhov ua haujlwm qis dua, nyob ib puag ncig 2.5 eV, thiab muaj qee qhov kev kam rau cathode paug. Cerium boride cathodes muaj qis evaporation tus nqi tshaj lanthanum boride ntawm 1700 K, tab sis lawv ua zoo ib yam ntawm 1850 K thiab txawm tias muaj evaporation tus nqi siab tshaj qhov kub.
Cerium boride cathode muaj 50% lub neej ntev dua li lanthanum boride vim nws muaj kev tiv thaiv ntau dua rau cov pa phem. Lub ci ci ntawm boride cathode yog kaum npaug ntawm tungsten cathode, thiab nws lub neej ntev yog 10-15 npaug ntawm tungsten cathode. Qee qhov kev sim hauv chav sim tau pom tias CeB6 muaj kev tiv thaiv ntau dua rau qhov tsis zoo ntawm cov pa roj carbon ntau dua li LaB6. Lawv feem ntau siv nyob rau hauv cov teb xws li electron microscopes, microwave tubes, electron beam etching, electron beam welding, X-ray tubes, thiab free electron lasers.
Cerium hexaboride (CeB6) yog cov khoom siv cathode nrog cov hluav taws xob siab heev vim nws txoj haujlwm qis dua. Nws tiv taus cov pa roj carbon ntau dua thiab muaj lub neej ntev dua li lanthanum borate cathodes. Nws yog dav siv nyob rau hauv cov teb xws li electron microscopy, microwave tubes, electron beam etching, electron beam welding, X-ray tubes, thiab dawb electron lasers. Cerium hexaborate crystals tau ua tiav hauv cov duab scanning electron microscopes, ua cov ntaub ntawv zoo heev thiab ruaj khov.
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