Khoom Parameters
| Molecular Luj | 92.9 |
| Qhov tshwm sim | Nyiaj |
| Melting Point | 2468 degree |
| Boiling Point | 4 742 ygo |
| Qhov ntom | 8.57 g / cm²3 |
| Solubility hauv H2O | N/A |
| Hluav taws xob Resistivity | 12.5 microhm-cm @ 0 degree |
| Electronegativity | 1.6 Paulings |
| Kub ntawm Vaporization | N/A |
| Poisson tus ratio | 0.4 |
| Tshwj xeeb kub | 0.064 Cal/g/K @ 25 degree |
| Tensile zog | N/A |
| Thermal conductivity | 0.537 W/cm/K @ 298.2 K |
| Thermal Expansion | 7.3 µm/(m·K) |
| Vickers Hardness | 1320 MPa |
| Young's Modulus | 105 GPa |
Khoom Description
Niobium pas nrig yog cov khoom siv zoo li tus pas nrig ua los ntawm niobium hlau, uas muaj ntau yam zoo ntawm lub cev thiab tshuaj lom neeg, yog li nws tau siv dav hauv ntau lub teb. Niobium rods yog ib qho yooj yim los ua haujlwm txias, xws li forging thiab kos duab, thiab tuaj yeem ua tau raws li qhov xav tau ntawm cov duab sib txawv thiab ntau thiab tsawg. High-purity niobium pas nrig muaj cov cuab yeej zoo dua qub thiab kev ua haujlwm ntev dua, thiab nws cov hluav taws xob conductivity thiab thermal conductivity kuj siab, uas tuaj yeem siv los tsim cov khoom siv hluav taws xob thiab hluav taws xob. Ntxiv zirconium thiab lwm yam ntsiab lus rau niobium tuaj yeem txhim kho oxidation tsis kam thiab lub zog ntawm cov khoom, thiab ua kom nws muaj kev ruaj ntseg zoo dua hauv qhov kub-kub oxidation ib puag ncig.
Niobium rods yog siv los ua cov ntaub ntawv ntawm aero-engines, foob pob ua ntxaij nozzles, reactor sab hauv Cheebtsam thiab lwm yam tseem ceeb Cheebtsam, thiab yog nyiam vim hais tias ntawm lawv zoo heev kub-kub kuj thiab corrosion kuj. Nyob rau hauv lub tshav pob ntawm lub zog nuclear thiab lwm yam khoom siv hluav taws xob, niobium rods yog siv los tsim cov khoom siv hluav taws xob sab hauv thiab cov ntaub ntawv cladding kom ntseeg tau tias muaj kev nyab xeeb ntawm cov chaw siv hluav taws xob. Hauv kev lag luam tshuaj, niobium rods yog siv los ua ntau yam corrosion-resistant qhov chaw nyob rau hauv cov xwm txheej ntawm nitric acid, hydrochloric acid los yog sulfuric acid corrosion kuj, xws li tshuaj reactors thiab pipelines.
Thaum xaiv niobium rods, nws yog thawj zaug uas yuav tsum tau qhia meej lawv cov kev siv tshwj xeeb los xaiv cov khoom uas muaj cov khoom sib xws. Purity muaj kev cuam tshuam zoo rau kev ua haujlwm thiab kev pabcuam lub neej ntawm niobium rods, yog li nws tau hais kom xaiv cov khoom siv siab huv. Txoj kab uas hla thiab ntev ntawm niobium pas nrig tuaj yeem kho raws li qhov xav tau tiag tiag kom tau raws li daim ntawv thov kev xav tau ntawm cov teb sib txawv. Tag nrho hauv tag nrho, raws li cov khoom siv ua haujlwm siab, molybdenum pas nrig muaj qhov kev thov dav dav hauv ntau qhov chaw. Raws li kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis, kev ua haujlwm ntawm molybdenum rods yuav raug txhim kho ntxiv, ua kom muaj txiaj ntsig zoo rau kev vam meej ntawm tib neeg lub neej.
Cim npe nrov: Tuam Tshoj niobium pas nrig manufacturers, lwm tus neeg, Hoobkas