Scandium, uas nws cov cim tshuaj yog Sc thiab nws tus lej atomic yog 21, yog ib qho mos, silvery-dawb hloov pauv hlau.Nws yog feem ntau tov nrog gadolinium, erbium, thiab lwm yam, nrog me ntsis tso zis thiab tus nqi siab.Lub ntsiab valence yog oxidation xeev + trivalent.
Scandium muaj nyob rau hauv lub ntiaj teb tsis tshua muaj minerals, tab sis tsuas yog ob peb cov zaub mov scandium tuaj yeem muab rho tawm hauv ntiaj teb.Vim qhov muaj tsawg thiab nyuaj hauv kev npaj scandium, thawj qhov kev rho tawm tau ua tiav hauv xyoo 1937.
Scandium muaj qhov siab melting point, tab sis nws qhov ntom ntom yog ze rau ntawm txhuas.Ntev npaum li ob peb txhiab tus scandium ntxiv rau txhuas, Al3Sc theem tshiab yuav raug tsim, uas yuav hloov kho cov aluminium alloy thiab ua kom pom tseeb cov kev hloov pauv hauv cov qauv thiab cov khoom ntawm cov hlau, yog li koj paub nws lub luag haujlwm.Scandium kuj tseem siv nyob rau hauv siab melting point lub teeb yuag alloys xws li scandium titanium alloy thiab scandium magnesium alloy.
Cia peb saib cov yeeb yaj kiab luv kom paub txog nws tus kheej cov ntaub ntawv
Nqe!Nqe!ExpensiveKuv ntshai tej yam tsis tshua muaj peev xwm tsuas yog siv rau ntawm qhov chaw shuttles thiab foob pob ua ntxaij.
Rau cov neeg noj zaub mov, scandium yog suav tias yog tsis muaj tshuaj lom.Kev kuaj tsiaj ntawm scandium tebchaw tau ua tiav, thiab qhov nruab nrab ntawm cov tshuaj tua kab mob scandium chloride tau raug txiav txim siab raws li 4 mg / kg intraperitoneal thiab 755 mg / kg ntawm qhov ncauj.Los ntawm cov txiaj ntsig no, cov tshuaj scandium yuav tsum tau kho raws li cov tshuaj lom neeg muaj pes tsawg leeg.
Txawm li cas los xij, hauv ntau thaj chaw, cov khoom siv scandium thiab scandium tau siv los ua cov khoom siv yees siv, xws li ntsev, qab zib lossis monosodium glutamate hauv tes ntawm kws ua zaub mov, uas tsuas yog xav tau me ntsis los ua kom tiav.
Post lub sij hawm: Aug-06-2021