Niobium Foil
Ntawv Nyiaj - nyias daim ntawv ntawm cov hlau ntshiab thiab hlau alloys. Vim lawv qhov xwm txheej tsis yooj yim, qee cov ntawv ci yog coated ntawm ib sab nrog acrylic lossis polyester txhawb.
Hauj lwm lawm
Nrhiav tau los ntawm C. Hatchett hauv 1801 hauv London, England. Niobium yog cov xim nyiaj xim uas feem ntau pom nrog tantalum, thiab ob lub ntsiab lus tau sib cais los ntawm fractional crystallization los ntawm lawv cov fluorine complexes. Niobium muaj nyob rau hauv lub ntiaj teb crust nyob rau hauv seem ib lab (ppm). Raws li ib tug ntshiab hlau, niobium yog heev reactive thiab cov ntaub ntawv tsis tshua muaj neeg ruaj khov oxides thaum raug rau huab cua, uas txhim khu nws tsis kam mus corrosion. Niobium reacts nrog ntau yam tsis-hlau ntawm qhov kub thiab txias.
Khoom Description
Niobium thiab nws cov alloys muaj cov ntsiab lus melting siab heev thiab yog li siv hauv cov khoom siv hluav taws xob kub siab (kub tshaj 1200 degrees Celsius). Niobium kuj tseem siv los ua tus neeg sawv cev alloying rau qee cov hlau, ua kom lub zog ntawm cov khoom siv zoo heev. Niobium kuj tseem siv rau hauv atomic reactors vim nws cov corrosion kuj thiab, thaum ua ke nrog tin (Nb₃Sn) los yog zirconium, nws yog superconductive.
Cov khoom siv hlau zoo tshaj plaws
Niobium Foil Properties (Theoretical)
| Molecular Luj | 92.9 |
|---|---|
| Qhov tshwm sim | khov kho |
| 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 rau |
| Young's Modulus | 105 GPa |
Loj-scale Hoobkas ntau lawm
FAQ
Q: Koj puas muab cov qauv dawb?
A: Yog, peb tuaj yeem muab cov qauv dawb rau kev kuaj, tus neeg yuav khoom yuav tsum tau them tag nrho cov nqi xa khoom.
Q: Koj puas kam txais cov xaj me me?
A: Koj tsis tas yuav txhawj txog qhov teeb meem no, tsuas yog sab laj.
Q: Koj puas lees txais qhov kev tshuaj xyuas thib peb?
A: Yog lawm peb lees txais.
Q: Dab tsi yog qhov zoo ntawm koj lub tuam txhab?
A:
(1): Prime zoo thiab tus nqi tsim nyog.
(2): Kev paub zoo heev nrog kev pab cuam tom qab muag.
(3): Txhua tus txheej txheem yuav raug tshuaj xyuas los ntawm lub luag haujlwm QC uas lav txhua yam khoom zoo.
(4): Pab pawg kws tshaj lij uas khaws txhua qhov kev ntim khoom kom zoo.
(5): Kev txiav txim mus sib hais tuaj yeem ua tiav hauv ib lub lis piam.
(6): Cov qauv tuaj yeem muab tau raws li koj xav tau.
Cim npe nrov: Tuam Tshoj niobium ntawv ci manufacturers, lwm tus neeg, Hoobkas
