Daim ntawv thov ntawm scandium oxide Sc2O3 hmoov

Kev siv ntawm scandium oxide

Cov tshuaj formula ntawm scandium oxide yog Sc2O3. Khoom: Dawb khoom. Nrog cubic qauv ntawm tsawg ntiaj teb sesquioxide. Qhov siab 3.864. Melting point 2403 ℃ 20 ℃. Insoluble nyob rau hauv dej, soluble nyob rau hauv kub acid. Nws yog npaj los ntawm thermal decomposition ntawm scandium ntsev. Nws tuaj yeem siv los ua cov khoom evaporation rau semiconductor txheej. Ua cov khoom laser nrog qhov sib txawv wavelength, siab txhais TV electron phom, hlau halide teeb, thiab lwm yam.

Scandium oxide (Sc2O3) yog ib qho tseem ceeb tshaj plaws ntawm cov khoom lag luam scandium. Nws lub cev thiab tshuaj muaj zog zoo ib yam li cov oxides uas tsis tshua muaj hauv ntiaj teb (xws li La2O3, Y2O3 thiab Lu2O3, thiab lwm yam), yog li cov txheej txheem tsim khoom siv hauv kev tsim khoom zoo sib xws. Sc2O3 tuaj yeem tsim cov hlau Scandium (sc), cov ntsev sib txawv (ScCl3, ScF3, ScI3, Sc2 (C2O4) 3, thiab lwm yam) thiab ntau yam scandium alloys (Al-Sc, Al-Zr-Sc series). Cov khoom lag luam scandium no muaj cov txiaj ntsig zoo thiab kev lag luam zoo.Sc2O3 tau siv dav hauv aluminium alloy, hluav taws xob lub teeb ci, laser, catalyst, activator, ceramics, aerospace thiab lwm yam vim nws cov yam ntxwv. Tam sim no, daim ntawv thov txheej xwm ntawm Sc2O3 nyob rau hauv lub teb ntawm alloy, hluav taws xob lub teeb qhov chaw, catalyst, activator thiab ceramics nyob rau hauv Tuam Tshoj thiab lub ntiaj teb no yog piav tom qab.

(1) kev siv cov alloy

Tam sim no, Al-Sc alloy ua los ntawm Sc thiab Al muaj qhov zoo ntawm qhov ntom ntom (SC = 3.0g / cm3, Al = 2.7g / cm3, siab zog, siab hardness, zoo plasticity, muaj zog corrosion kuj thiab thermal stability, thiab lwm yam. Yog li ntawd, nws tau siv zoo nyob rau hauv cov qauv ntawm cov foob pob hluav taws, aerospace, aviation, tsheb thiab nkoj, thiab maj mam tig mus rau pej xeem siv, xws li cov tes tuav. Cov khoom siv ua kis las (hockey thiab baseball) Nws muaj cov yam ntxwv ntawm lub zog siab, siab rigidity thiab lub teeb yuag, thiab muaj txiaj ntsig zoo.

Scandium feem ntau plays lub luag hauj lwm ntawm kev hloov kho thiab grain refinement nyob rau hauv lub alloy, uas ua rau lub tsim ntawm tshiab theem Al3Sc hom nrog zoo heev zog. Al-Sc alloy tau tsim ib tug series ntawm alloy series, piv txwv li, Russia tau mus txog 17 hom Al-Sc series, thiab Tuam Tshoj kuj muaj ob peb alloys (xws li Al-Mg-Sc-Zr thiab Al-Zn-Mg-Sc alloy). Cov yam ntxwv ntawm hom alloy no tsis tuaj yeem hloov pauv los ntawm lwm cov ntaub ntawv, yog li los ntawm kev txhim kho kev pom, Nws daim ntawv thov kev loj hlob thiab muaj peev xwm yog qhov zoo, thiab xav tias yuav dhau los ua daim ntawv thov loj rau yav tom ntej. Piv txwv li, Russia tau muaj kev tsim khoom thiab tsim kho sai rau cov qauv teeb pom kev zoo, thiab Tuam Tshoj tau nrawm nrawm rau nws cov kev tshawb fawb thiab kev siv, tshwj xeeb tshaj yog nyob rau hauv aerospace thiab aviation.

(2) kev siv cov khoom siv hluav taws xob tshiab

Ntshiab Sc2O3 tau hloov dua siab tshiab rau hauv ScI3, thiab tom qab ntawd ua rau cov khoom siv hluav taws xob tshiab thib peb nrog NaI, uas tau ua tiav rau hauv scandium-sodium halogen teeb rau teeb pom kev zoo (li 0.1mg ~ 10mg ntawm Sc2O3≥99% cov khoom siv rau txhua lub teeb. Nyob rau hauv qhov kev txiav txim ntawm high voltage, lub scandium spectral kab yog xiav thiab sodium spectral kab yog daj, thiab ob xim koom tes nrog. ib leeg los tsim lub teeb ze rau lub hnub ci.Lub teeb muaj qhov zoo ntawm cov luminosity siab, zoo lub teeb xim, txuag lub zog, lub neej ntev thiab muaj zog pos huab tawg.

(3) Kev siv cov ntaub ntawv laser

Gadolinium gallium scandium garnet (GGSG) tuaj yeem npaj tau los ntawm kev ntxiv cov ntshiab Sc2O3≥ 99.9% rau GGG, thiab nws muaj pes tsawg leeg yog Gd3Sc2Ga3O12 hom. Lub zog emission ntawm lub thib peb tiam laser ua los ntawm nws yog 3.0 lub sij hawm siab tshaj ntawm lub laser nrog tib lub ntim, uas tau mus txog ib tug high-power thiab miniaturized laser ntaus ntawv, nce lub zog tso zis ntawm laser oscillation thiab txhim kho cov kev ua tau zoo ntawm laser. . Thaum npaj ib qho siv lead ua, Txhua tus nqi yog 3kg ~ 5kg, thiab txog 1.0kg ntawm raw khoom nrog Sc2O3≥99.9% ntxiv. Tam sim no, hom laser no tau siv dav hauv kev siv tub rog, thiab nws kuj tseem maj mam thawb mus rau kev lag luam pej xeem. Los ntawm txoj kev xav ntawm txoj kev loj hlob, nws muaj peev xwm loj hauv kev ua tub rog thiab kev siv pej xeem yav tom ntej.

(4) kev siv cov khoom siv hluav taws xob

Ntshiab Sc2O3 tuaj yeem siv los ua oxidation cathode activator rau cathode electron phom ntawm xim TV duab raj nrog cov nyhuv zoo. Txau ib txheej ntawm Ba, Sr thiab Ca oxide nrog lub thickness ntawm ib millimeter ntawm lub cathode ntawm cov xim raj, thiab ces disperse ib txheej ntawm Sc2O3 nrog ib tug tuab ntawm 0.1 millimeter rau nws. Nyob rau hauv lub cathode ntawm oxide txheej, Mg thiab Sr react nrog Ba, uas txhawb nqa qhov txo qis ntawm Ba, thiab cov electrons tso tawm muaj zog dua, muab cov hluav taws xob loj tam sim no, uas ua rau cov phosphor emit teeb.Piv nrog cov cathode tsis muaj Sc2O3 txheej. , nws tuaj yeem nce qhov ceev tam sim no los ntawm 4 zaug, ua rau cov duab hauv TV kom pom tseeb thiab ntev lub neej cathode los ntawm 3 zaug. Tus nqi ntawm Sc2O3 siv rau txhua 21-nti tsim cathode yog 0.1mg Tam sim no, cov cathode no tau siv nyob rau qee lub tebchaws hauv ntiaj teb, xws li Nyiv, uas tuaj yeem txhim kho kev lag luam kev sib tw thiab txhawb kev muag khoom ntawm TV.