Scandium Oxide

Scandium oxide
Cov tshuaj formula ntawm scandium oxide yog Sc2O3. Xwm: dawb khoom. Nws muaj cubic qauv ntawm tsawg lub ntiaj teb sesquioxide. Qhov ceev 3.864. Melting point 2403 degree ± 20 degree. Insoluble hauv dej, soluble 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 qhov sib txawv wavelength solid-state lasers, high-txhais TV electron phom, hlau halide teeb, thiab lwm yam.
Scandium oxide (Sc2O3) yog ib qho ntawm cov khoom tseem ceeb tshaj plaws hauv cov khoom lag luam scandium. Nws cov khoom siv lub cev thiab tshuaj lom neeg zoo ib yam li cov oxides uas tsis tshua muaj hauv ntiaj teb (xws li La2O3, Y2O3 thiab Lu2O3), yog li cov txheej txheem tsim khoom siv hauv kev tsim khoom zoo sib xws. Sc2O3 tuaj yeem tsim cov hlau scandium (Sc), cov khoom ntawm 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 cov txiaj ntsig kev lag luam zoo. Vim qee tus yam ntxwv ntawm Sc2O3, nws tau siv dav hauv aluminium alloys, hluav taws xob lub teeb qhov chaw, lasers, catalysts, activators, ceramics thiab aerospace, thiab nws txoj kev vam meej yog dav heev.
Nyob rau xyoo 1970, Tuam Tshoj pib tsim cov khoom lag luam Sc2O3, thiab cov khoom hnyav hnyav nkag mus rau hauv khw. Nyob rau xyoo 1980, Tuam Tshoj txoj kev tsim khoom ntawm Sc2O3 tau nce mus txog qhov kawg, nrog rau cov khoom tawm mus txog ntau tshaj 100 kg, feem ntau xa tawm mus rau Nyiv thiab Tebchaws Meskas. Txij li thaum xyoo 1990, Russia tau tsim cov khoom lag luam Sc2O3 ntau thiab muab pov rau hauv kev lag luam thoob ntiaj teb ntawm tus nqi qis, uas tau cuam tshuam loj heev rau kev tsim cov khoom lag luam scandium oxide hauv Suav teb, ua rau cov khoom ntawm Sc2O3 ntawm qhov qis, thiab ntau lawm. cov kab tau poob qis, ua rau Tuam Tshoj lub peev xwm thiab cov khoom tsim tawm hauv lub xeev poob qis. Txawm li cas los xij, nyob rau xyoo tas los no, kev txhim kho ntawm Sc-Al alloy thiab cov khoom siv hluav taws xob hluav taws xob hauv Suav teb tau txhawb nqa kev tsim khoom ntawm Sc2O3. Tuam Tshoj yog nplua nuj nyob rau hauv scandium peev txheej. Nws tau tshaj tawm tias kev lag luam khaws cia ntawm scandium hauv ntiaj teb yog kwv yees li 2 lab tons ntawm tam sim no, thiab muaj li ntawm 600000-650000 tons hauv Suav teb, suav txog li 30 feem pua ​​​​ntawm lub ntiaj teb cov ntsiab lus tag nrho.