cov khoom xov xwm

  • Kev siv dysprosium oxide yog dab tsi?

    Dysprosium oxide, tseem hu ua dysprosium (III) oxide, yog ntau yam thiab tseem ceeb compound nrog ntau yam kev siv. Lub ntiaj teb tsis tshua muaj hlau oxide no yog tsim los ntawm dysprosium thiab oxygen atoms thiab muaj cov tshuaj formula Dy2O3. Vim nws qhov kev ua tau zoo thiab cov yam ntxwv, nws yog dav ...
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  • Barium hlau: Kev tshuaj xyuas ntawm kev phom sij thiab ceev faj

    Barium yog silvery-dawb, lustrous alkaline ntiaj teb hlau paub txog nws cov khoom tshwj xeeb thiab ntau yam kev siv hauv ntau yam lag luam. Barium, nrog tus lej atomic 56 thiab cim Ba, yog siv dav hauv kev tsim cov khoom sib txuas, suav nrog barium sulfate thiab barium carbonate. Txawm li cas los xij...
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  • Nano europium oxide Eu2O3

    Khoom npe: Europium oxide Eu2O3 Specification: 50-100nm, 100-200nm Xim: Pink Dawb Dawb (Different particle loj thiab xim yuav txawv) Crystal form: cubic Melting point: 2350 ℃ Bulk ntom: 0.66 g / cm3 Tej thaj chaw deb: 5 -10m2 / gEuropium oxide, melting point 2350 ℃, insoluble hauv dej, ...
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  • Lanthanum keeb los daws Eutrophication ntawm lub cev dej

    Lanthanum, element 57 ntawm lub sijhawm teem sijhawm. Txhawm rau ua kom lub sij hawm lub sij hawm ntawm cov ntsiab lus zoo sib haum xeeb, tib neeg tau tawm 15 yam ntawm cov ntsiab lus, suav nrog lanthanum, uas nws tus lej Atomic nce ntxiv, thiab muab lawv cais hauv qab lub sijhawm. Lawv cov khoom chemical yog si...
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  • Thulium laser hauv Minimally invasive txheej txheem

    Thulium, element 69 ntawm lub sijhawm teem sijhawm. Thulium, lub caij nrog cov ntsiab lus tsawg tshaj plaws ntawm lub ntiaj teb tsis tshua muaj, feem ntau yog coexist nrog lwm cov ntsiab lus hauv Gadolinite, Xenotime, dub tsawg kub ore thiab monazite. Thulium thiab lanthanide hlau ntsiab lus coexist nyob rau hauv tsis tshua muaj complex ores nyob rau hauv nat ...
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  • Gadolinium: Cov hlau txias tshaj plaws hauv ntiaj teb

    Gadolinium, lub caij 64 ntawm lub sijhawm teem sijhawm. Lanthanide nyob rau hauv lub sij hawm lub sij hawm yog ib tsev neeg loj, thiab lawv cov tshuaj muaj pes tsawg leeg zoo sib xws, yog li nws yog ib qho nyuaj rau cais lawv. Xyoo 1789, Finnish chemist John Gadolin tau txais cov hlau oxide thiab pom thawj lub ntiaj teb tsis tshua muaj o ...
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  • Qhov cuam tshuam ntawm Lub Ntiaj Teb Tsis tshua muaj rau Aluminium thiab Aluminium Alloys

    Daim ntawv thov ntawm lub ntiaj teb tsis tshua muaj nyob rau hauv casting aluminium alloy tau nqa tawm ua ntej txawv teb chaws. Txawm hais tias Tuam Tshoj tau pib tshawb fawb thiab siv cov nam no tsuas yog nyob rau xyoo 1960, nws tau tsim sai heev. Muaj ntau txoj haujlwm tau ua los ntawm kev tshawb fawb txog kev siv tshuab mus rau kev siv tswv yim, thiab qee qhov kev ua tiav ...
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  • Dysprosium: Ua rau lub teeb ci los txhawb kev cog qoob loo

    Dysprosium: Ua rau lub teeb ci los txhawb kev cog qoob loo

    Dysprosium, lub caij 66 ntawm lub sij hawm Jia Yi ntawm Han Dynasty tau sau nyob rau hauv "Rau Kaum Qhov Kev Txhaum Cai ntawm Qin" tias "peb yuav tsum sau tag nrho cov tub rog los ntawm lub ntiaj teb, sau lawv hauv Xianyang, thiab muag lawv". Ntawm no, 'dysprosium' yog hais txog qhov kawg ntawm tus xub. Nyob rau hauv 1842, tom qab Mossander cais ib tug ...
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  • Daim ntawv thov thiab kev siv tshuab ntawm Rare Earth Nanomaterials

    Tsis tshua muaj ntiaj teb cov ntsiab lus lawv tus kheej muaj cov khoom siv hluav taws xob nplua nuj thiab nthuav tawm ntau yam khoom siv kho qhov muag, hluav taws xob, thiab sib nqus. Tom qab lub ntiaj teb tsis tshua muaj nanomaterialization, nws nthuav tawm ntau yam ntxwv, xws li cov nyhuv me me, cov nyhuv tshwj xeeb saum npoo, cov nyhuv quantum, muaj zog kho qhov muag, ...
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  • Magical Rare Earth Compound: Praseodymium Oxide

    Praseodymium oxide, molecular mis Pr6O11, molecular hnyav 1021.44. Nws tuaj yeem siv rau hauv iav, metallurgy, thiab ua ib qho ntxiv rau cov hmoov fluorescent. Praseodymium oxide yog ib qho ntawm cov khoom tseem ceeb hauv cov khoom siv hluav taws xob tsawg hauv ntiaj teb. Vim nws qhov tshwj xeeb lub cev thiab tshuaj lom neeg, nws muaj ...
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  • Txoj kev teb thaum muaj xwm ceev rau zirconium tetrachloride Zrcl4

    Zirconium tetrachloride yog ib qho dawb, ci siv lead ua los yog hmoov uas ua rau deliquescence. Feem ntau siv rau hauv kev tsim cov hlau zirconium, pigments, textile waterproofing agents, tawv tanning agents, thiab lwm yam., nws muaj tej yam txaus ntshai. Hauv qab no, cia kuv qhia cov txheej txheem teb xwm txheej ceev ntawm z ...
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  • Zirconium tetrachloride Zrcl4

    Zirconium tetrachloride Zrcl4

    1, Kev taw qhia luv luv: Nyob rau hauv chav tsev kub, Zirconium tetrachloride yog cov hmoov dawb crystalline nrog cov qauv lattice uas yog cov khoom siv lead ua cubic. Lub sublimation kub yog 331 ℃ thiab lub melting point yog 434 ℃. Lub gaseous zirconium tetrachloride molecule muaj tetrahedral stru...
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