Mtengo Wa Cerium Boride 99% Min Purity Yopangidwa ku China

Munda wa ntchito:

Ndizitsulo zokanirira za ceramic Cerium boride zimagwiritsidwa ntchito makamaka ngati zokutira kwa ma cathode otentha, kapena cathode yotentha imapangidwa mwachindunji ndi makristasi a cerium hexaboride.Cerium hexaboride (CeB6) ndi lanthanum hexaboride (LaB6) nthawi zambiri amagwiritsidwa ntchito ngati zokutira zapakali pano za cathode zotentha kwambiri.Hexaboride ili ndi ntchito yotsika, pafupifupi 2.5 eV, ndipo imakhala ndi kulolerana kwina kwa kuipitsidwa kwa cathode.Cerium boride cathodes ali ndi milingo yotsika ya evaporation kuposa lanthanum boride pa 1700 K, koma amakhala yunifolomu pa 1850 K komanso milingo yayikulu ya evaporation pamwamba pa kutentha.Ma cathodes a Cerium boride amakhala ndi moyo wautali 50% kuposa lanthanum boride chifukwa cha kukana kwawo kuwononga mpweya.Kuwala kwa boride cathode ndi kakhumi kuposa kwa tungsten cathode ndipo moyo wake ndi 10-15 nthawi ya tungsten cathode.Mayeso ena a labotale awonetsa kuti CeB6 imalekerera kwambiri zoyipa zakuwonongeka kwa kaboni kuposa LaB6.Amagwiritsidwa ntchito kwambiri, mwachitsanzo, ma electron microscopy, machubu a microwave, electron beam etching, electron beam welding, X-ray chubu, ndi ma electron lasers aulere.