Kev siv Niobium

Niobium yog siv los ua ib qho ntxiv hauv cov hlau-, nickel- thiab zirconium-based superalloys los txhim kho lawv lub zog. Niobium yog siv nyob rau hauv lub atomic zog kev lag luam raws li ib tug yam ntxwv khoom rau reactors thiab raws li ib tug sheath khoom rau nuclear roj, raws li zoo raws li ib tug thermal tiv thaiv thiab structural khoom nyob rau hauv aviation thiab aerospace industries. Niobium capacitors zoo ib yam li tantalum capacitors, tab sis vim yog qhov me me ntawm niobium, lub capacitance ib chav tsev ntim loj dua. Niobium-titanium, niobium-zirconium alloys thiab niobium-tin, niobium-aluminium-germanium thiab lwm cov khoom sib txuas ntawm cov khoom siv hluav taws xob, ntxiv rau siv rau kev xa hluav taws xob, hluav taws xob tsim hluav taws xob, kev tsim cov hlau nplaum superconducting, kev tswj ntawm nuclear fusion, tab sis kuj siv nyob rau hauv cosmic tsheb nyob rau hauv lub navigation ntaus ntawv, high-speed diving hlab ntsha electromagnetic propulsion khoom thiab superconducting super-chav kawm high-speed tsheb ciav hlau. Niobium muaj cov kua qaub tiv thaiv zoo dua li zirconium, tab sis tsis zoo li tantalum, thiab tuaj yeem siv los ua cov khoom siv hluav taws xob, condensers, lim, stirrers thiab lwm yam. Niobium carbide tuaj yeem siv ib leeg lossis nrog tungsten carbide, molybdenum carbide, rau kub forging pwm, txiav cov cuab yeej, dav hlau cav turbine hniav, li qub, daim tiab thiab foob pob hluav taws nozzle txheej. Alloy steel uas muaj niobium muaj lub zog siab, zoo toughness, tsis kam rau txias quenching, 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 ib hom steel grey luster refractory tsawg hlau, nws melting point ntawm 2467. C, ceev ntawm 8.6 g / cm3. Niobium muaj ib tug zoo low-temperature plasticity, yuav ua tau txias siab ua rau ntau yam. cov khoom semi-tiav lawm. Nws yog qhov kub thiab txias tiv taus thiab muaj zog, thiab tseem muaj lub zog txaus, plasticity thiab thermal conductivity saum 1000.C. Nws yog superconductive ntawm qhov kub thiab txias heev. Superconductivity ntawm qhov kub qis heev yog qhov zoo tshaj plaws, xws li ntawm qhov rho tawm 260.C lossis yog li nws qhov tsis kam yog ze rau xoom. Resistant rau tshuaj corrosion thiab atmospheric corrosion hauv qab 150.C. Nyob rau hauv chav tsev kub rau ntau cov kua qaub thiab ntsev tov yog ruaj khov, tab sis soluble hauv hydrogen brittle. Tsim cov yeeb yaj kiab oxide ruaj khov thaum anodized. Niobium hauv cov zaub mov hauv qhov xwm txheej. Tsim cov yeeb yaj kiab oxide ruaj khov thaum anodized. Nyob rau hauv cov minerals niobium, tantalum symbiosis, muaj niobium thiab tantalum minerals yog: burnt chlorite, niobium-tantalite, xim av yttrium niobium ore, niobium-muaj titanium-hlau rutile, rhodochrosite, as Well as niobium-tantalum ntsev. Qee qhov steelmaking slag thiab tin smelting slag kuj tseem ceeb rau kev rho tawm ntawm niobium. Kev faib tawm ntawm niobium ore lossis tantalum ore feem ntau yog nyob ntawm tus nqi ntawm niobium lossis tantalum muaj nyob hauv cov ntxhia. Niobium peb tin superconducting magnetic zog kom ncav cuag thoob ntiaj teb qib Baoji Tsis tshua muaj Nonferrous Metals Processing Research Institute nrog nws tus kheej tsim cov hlau sim ua tiav ntawm lub puab txoj kab uas hla ntawm 23.5 hli ntxig multi-core niobium peb tin superconducting hlau nplaum. Cov hlau nplaum no thiab cov hlau nplaum ib txwm muaj dua li qhov me me, lub teeb yuag, siab sib nqus lub zog; yog tias lub hwj chim kaw ua haujlwm, kev ua haujlwm mus sij hawm ntev tsis xav tau lub zog hluav taws xob. Tom qab Suav thiab Fab Kis cov neeg ua haujlwm tshawb fawb thiab thev naus laus zis hauv Fab Kis National Center for Scientific Research high-field laboratory ua ke nrog qhov kev sim, hauv -286.96 degree, cov hlau nplaum chaw teb lub zog ntawm 154,000 gauss, qhov kev ua tau zoo tau mus txog qhov thoob ntiaj teb qib.