Kev siv ntawmniobiumRaws li ib qho ntxiv rau cov hlau-raws li, nickel-based thiab zirconium-based superalloys, niobium tuaj yeem txhim kho lawv lub zog. Hauv kev lag luam atomic zog, niobium yog tsim los siv los ua cov khoom siv ntawm cov reactor thiab cladding khoom ntawm nuclear roj, nrog rau kev tiv thaiv thermal thiab cov khoom siv hauv kev lag luam aviation thiab aerospace. Niobium capacitance zoo ib yam li tantalum capacitance, tab sis vim yog qhov me me ntawm niobium, lub capacitance ib chav tsev ntim loj dua. Niobium titanium, niobium zirconium alloy, niobium tin, niobium aluminium germanium thiab lwm yam khoom siv superconductive tsis yog siv rau kev xa hluav taws xob, lub zog tsim hluav taws xob, kev tsim cov hlau nplaum superconducting, thiab kev tswj ntawm nuclear fusion, tab sis kuj siv rau cov khoom siv navigation hauv spacecraft, electromagnetic. propulsion khoom rau high-speed diving nkoj, thiab superconducting superclass high-speed tsheb ciav hlau. Cov kua qaub corrosion kuj ntawm niobium zoo dua li ntawm zirconium, tab sis tsis zoo li ntawm tantalum. Nws tuaj yeem siv los ua cov khoom siv hluav taws xob, condenser, lim, agitator, thiab lwm yam. Niobium carbide tuaj yeem siv ib leeg lossis ua ke nrog tungsten carbide thiab molybdenum carbide li kub forging tuag, txiav cov cuab yeej, dav hlau cav turbine hniav, li qub, tail skirts thiab foob pob ua ntxaij. nozzle txheej. Niobium-muaj hlau alloy muaj lub zog siab, zoo toughness thiab txias quenching kuj, thiab yog dav siv nyob rau hauv cov roj pipelines. Lithium niobate ib leeg siv lead ua yog siv hauv cov xim TV. Qhov xwm ntawm niobium niobium yog cov hlau tsis tshua muaj hlau nrog cov hlau grey luster, thiab nws cov ntsiab lus melting yog 2467. C. Qhov ceev yog 8.6 g / cm3. Niobium muaj qhov kub thiab txias zoo plasticity thiab tuaj yeem ua tiav rau hauv ntau yam khoom siv ua tiav los ntawm lub zog txias. Kev kub siab ua haujlwm, siab zog, ntawm 1000. C thiab siab dua tseem muaj lub zog txaus, plasticity thiab thermal conductivity. Superconductivity yog qhov zoo tshaj plaws ntawm qhov kub tsis tshua muaj siab, xws li rho tawm 260. Qhov kev tiv thaiv yog zero ntawm C. Ntawm 150. Hauv qab C, nws yog resistant rau tshuaj corrosion thiab atmospheric corrosion. Nws ruaj khov rau ntau cov kua qaub thiab ntsev hauv chav sov, tab sis soluble hauv hydrogen embrittlement. Lub oxide zaj duab xis ruaj khov yog tsim thaum lub sij hawm anodization. Nyob rau hauv tej yam ntuj tso minerals, niobium. Lub oxide zaj duab xis ruaj khov yog tsim thaum lub sij hawm anodization. Nyob rau hauv tej yam ntuj tso minerals, niobium thiab tantalum coexist. Cov minerals uas muaj niobium thiab tantalum muaj xws li pyrochlore, niobium-tantalite, limonite, niobium-titanium-cov kabmob rutile, rutile thiab niobium-tantalate placer. Qee qhov steelmaking slag thiab tin smelting slag kuj tseem ceeb cov kev pab cuam rau refining niobium. Kev faib tawm ntawm niobium ore lossis tantalum ore yog txiav txim siab los ntawm cov nyiaj niobium lossis tantalum hauv cov ntxhia. Nb-Tn superconducting magnetic zog tau mus txog qib thoob ntiaj teb. Baoji tshawb fawb lub koom haum ntawm Rare Nonferrous Hlau Ua tiav tau ua tiav kev sim-tsim ib qho kev ntxig ntau-ntxhais Nb-Tn superconducting hlau nplaum nrog ib txoj kab uas hla ntawm 23.5 hli siv nws tus kheej xaim. Piv nrog cov pa hlau nplaum, cov hlau nplaum zoo li no muaj qhov ntim me me, lub teeb yuag thiab siab sib nqus lub zog; Tom qab lub hwj chim qhib thiab kaw, lub hwj huam mov tsis tas yuav tsum tau ua haujlwm ntev. Raws li kev sim ua los ntawm Suav thiab Fab Kis cov neeg ua haujlwm tshawb fawb thiab thev naus laus zis hauv qhov chaw kuaj mob siab ntawm National Research Center ntawm Fabkis, ntawm - 286.96 ℃, lub zog nruab nrab ntawm cov hlau nplaum nce mus txog 154000 Gauss, thiab nws qhov kev ua tau zoo mus txog qib thoob ntiaj teb. .
Post lub sij hawm: Mar-09-2023