Lanthanum hexaboride LaB6 foda

Takaitaccen bayani:

Lanthanum hexaboratewani fili ne wanda ba na ƙarfe ba wanda ya ƙunshi ƙananan valence boron da ƙarancin ƙarfe na lanthanum, wanda ke da tsari na musamman na crystal da halayen asali na borides. Daga hangen abubuwan kaddarorin kayan, lanthanum hexaborate LaB6 na cikin wani fili mai jujjuyawar ƙarfe tare da tsarin kristal mai siffar sukari. Yana da kyawawan kaddarorin irin su babban tauri, babban aiki mai ƙarfi, babban wurin narkewa, ƙarancin haɓakar haɓakar thermal, da kwanciyar hankali mai kyau na sinadarai. A lokaci guda kuma, lanthanum hexaborate yana fitar da babban adadin halin yanzu da ƙarancin ƙanƙara a yanayin zafi mai yawa, kuma yana da ƙarfin juriya ga bam ɗin ion, filin lantarki mai ƙarfi, da radiation. An yi amfani da shi a cikin kayan cathode, microscopy na lantarki, aikace-aikacen walda na katako na lantarki a cikin filayen da ke buƙatar matsanancin iska, kamar tubes masu fitarwa.

 Lanthanum hexaborateyana da ingantaccen kaddarorin sinadarai kuma baya amsawa da ruwa, oxygen, ko ma hydrochloric acid; A cikin zafin jiki, yana amsawa kawai tare da nitric acid da aqua regia; Oxidation yana faruwa ne kawai a 600-700 ℃ a cikin yanayin iska. A cikin yanayi mara kyau, kayan LaB6 yana da saurin amsawa tare da wasu abubuwa ko gas don samar da ƙananan abubuwa masu narkewa; A yanayin zafi mai zafi, abubuwan da aka kafa za su ci gaba da ƙafe, suna fallasa ƙarancin aikin tserewa na lanthanum hexaborate crystal zuwa farfajiyar fitarwa, ta haka yana ba da kyakkyawan ikon hana guba.

Thelanthanum hexaboratecathode yana da ƙarancin ƙashin ƙura da kuma tsawon rayuwar sabis a babban yanayin zafi. Lokacin da aka yi zafi zuwa mafi girma, zarra na lanthanum na ƙarfe na saman yana haifar da guraben aiki saboda asarar ƙashi, yayin da ƙwayoyin lanthanum na ƙarfe na ciki suma suna yaduwa don ƙarin guraben aiki, suna kiyaye tsarin tsarin boron bai canza ba. Wannan kadarorin yana rage asarar ƙafewar LaB6 cathode kuma yana kiyaye saman cathode mai aiki a lokaci guda. A daidai wannan yawan hayaƙi na yanzu, ƙimar ƙawancen kayan katode na LaB6 a yanayin zafi ya yi ƙasa da na kayan cathode na gabaɗaya, kuma ƙarancin ƙanƙara mai mahimmanci abu ne mai mahimmanci wajen tsawaita rayuwar cathodes.

Aikace-aikace:

1. Lanthanum hexaborate LaB6 cathode abu

A high watsi halin yanzu yawa da kuma low evaporation kudi a high yanayin zafi naLaB6 lanthanum hexaboratesanya shi kayan cathode tare da ingantaccen aiki, a hankali ya maye gurbin wasu cathodes tungsten a aikace-aikacen masana'antu. A halin yanzu, manyan wuraren aikace-aikacen kayan LaB6 cathode tare da lanthanum hexaborate sune kamar haka:

1.1 Sabbin masana'antun fasaha irin su microwave vacuum electronics da ion thrusters a fagen soja da fasahar sararin samaniya, nuni da na'urori masu hoto tare da babban ma'ana da haɓakar haɓakar da ake buƙata ta masana'antu na farar hula da na soja, da na'urorin lantarki na lantarki. A cikin waɗannan manyan masana'antu na fasaha, buƙatun kayan cathode tare da ƙarancin zafin jiki, haɓakar haɓakar daidaituwa, yawan iska mai yawa a halin yanzu, da tsawon rayuwa koyaushe yana da ƙarfi sosai.

1.2 Masana'antar walƙiya ta lantarki, tare da haɓakar tattalin arziƙin, na buƙatar injin walƙiya na katako na lantarki, narkewar katako na lantarki, da kayan yankan kayan aiki tare da cathodes waɗanda zasu iya biyan buƙatun babban ƙarfin halin yanzu da ƙarancin guduwa. Koyaya, kayan aikin gargajiya galibi suna amfani da tungsten cathodes (tare da babban aikin tserewa da ƙarancin hayaƙi na yanzu) waɗanda ba za su iya biyan buƙatun aikace-aikacen ba. Saboda haka, LaB6 cathodes sun maye gurbin tungsten cathodes tare da kyakkyawan aikinsu kuma an yi amfani da su sosai a masana'antar walda ta lantarki.

1.3 A cikin masana'antar kayan aikin gwaji na fasaha,LaB6cathode yana amfani da babban haskensa, tsawon rayuwarsa da sauran halaye don maye gurbin kayan aikin cathode na gargajiya kamar tungsten cathode a cikin kayan lantarki kamar microscopes na lantarki, na'urorin gani na Auger, da na'urorin lantarki.

1.4A cikin masana'antar haɓakawa, LaB6 yana da kwanciyar hankali mafi girma akan bama-bamai na ion idan aka kwatanta da tungsten na gargajiya da tantalum. Saboda,LaB6Ana amfani da cathodes da yawa a cikin masu haɓakawa tare da sassa daban-daban kamar synchrotron da cyclotron accelerators.

1.5LaB6Ana iya amfani da cathode a cikin bututun fitar da iskar gas, bututun Laser, da nau'in amplifiers na nau'in magnetron a cikin masana'antar fitarwa ta 1.5.

2. LaB6, a matsayin kayan lantarki a cikin fasahar zamani, ana amfani da shi sosai a masana'antun farar hula da na tsaro:

2.1 Electron watsi cathode. Saboda ƙananan aikin tserewa na lantarki, ana iya samun kayan cathode tare da mafi girman watsi da halin yanzu a matsakaicin yanayin zafi, musamman maɗaukakin lu'ulu'u guda ɗaya, waɗanda suke da kayan aiki masu kyau don babban ƙarfin wutar lantarki.

2.2 Madogarar haske mai haske. Mahimman abubuwan da aka yi amfani da su don shirya microscopes na lantarki, kamar masu tacewa na gani, monochromators na X-ray mai laushi, da sauran hanyoyin hasken wutar lantarki.

2.3 Babban kwanciyar hankali da manyan abubuwan tsarin rayuwa. Kyakkyawan ingantaccen aikin sa yana ba da damar aikace-aikacen sa a cikin nau'ikan katako na lantarki daban-daban, kamar zanen katako na lantarki, tushen zafi na lantarki, bindigogin walda na katako, da na'urori masu haɓakawa, don samar da abubuwan da suka dace a fagen injiniya.

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