Cov khoom ntawm Zirconium
| Atomic naj npawb | 40 |
| CAS nr | 7440-67-7 ib |
| Atomic loj | 91.224 ib |
| Melting point | 1852 ℃ |
| Boiling point | 4377 ℃ |
| Atomic ntim | 14.1g / cm³ |
| Qhov ntom | 6.49 g / cm³ |
| Crystal qauv | Dense hexagonal unit cell |
| Kev nplua nuj nyob rau hauv lub ntiaj teb crust | 1900 ppm ib |
| Ceev lub suab | 6000 (m / S) |
| Thermal expansion | 4.5 × 10^-6 K^-1 |
| Thermal conductivity | 22.5 m² / m² |
| Hluav taws xob resistivity | 40m Ω |
| Mohs hardness | 7.5 |
| Vickers hardness | 1200 HV |
Zirconium yog cov khoom siv tshuaj nrog lub cim Zr thiab tus lej atomic ntawm 40. Nws daim ntawv tseem ceeb yog lub siab melting point hlau thiab pom lub teeb grey. Zirconium yog nquag tsim cov oxide zaj duab xis rau ntawm nws qhov chaw, uas muaj qhov ci zoo li cov hlau. Nws muaj kev tiv thaiv corrosion thiab soluble hauv hydrofluoric acid thiab aqua regia. Thaum qhov kub thiab txias, nws tuaj yeem hnov mob nrog cov ntsiab lus tsis yog xim hlau thiab ntau lub ntsiab lus hlau los tsim cov kev daws teeb meem.
Zirconium yooj yim absorbs hydrogen, nitrogen, thiab oxygen; Zirconium muaj kev sib raug zoo rau cov pa oxygen, thiab cov pa oxygen yaj hauv zirconium ntawm 1000 ° C tuaj yeem nce nws qhov ntim ntau. Zirconium yog nquag tsim cov oxide zaj duab xis rau ntawm nws qhov chaw, uas muaj qhov ci zoo li cov hlau. Nws muaj kev tiv thaiv corrosion, tab sis yog soluble hauv hydrofluoric acid thiab aqua regia. Thaum qhov kub thiab txias, nws tuaj yeem hnov mob nrog cov ntsiab lus tsis yog xim hlau thiab ntau yam xim hlau los tsim cov kev daws teeb meem. Zirconium muaj cov yas zoo thiab yooj yim rau txheej txheem rau hauv daim hlau, xov hlau, thiab lwm yam. Zirconium muaj kev tiv thaiv corrosion zoo dua li titanium, nce mus txog niobium thiab tantalum. Zirconium thiab hafnium yog ob lub hlau uas muaj cov tshuaj zoo sib xws, sib koom ua ke thiab muaj cov khoom siv hluav taws xob.
Zirconium yog cov hlau tsis tshua muaj siab corrosion kuj, siab melting point, ultra-siab hardness thiab lub zog, thiab yog dav siv nyob rau hauv aerospace, tub rog, nuclear tshuaj, thiab atomic zog teb. Cov khoom siv tiv thaiv corrosion thiab tiv taus titanium uas siv rau ntawm Shenzhou VI muaj kev tiv thaiv corrosion ntau dua li zirconium, nrog rau qhov kub ntawm ib ncig ntawm 1600 degrees. Zirconium muaj qhov melting point ntawm tshaj 1800 degrees, thiab zirconia muaj ib tug melting point ntawm tshaj 2700 degrees. Yog li ntawd, zirconium, raws li cov khoom siv hauv aerospace, muaj kev ua tau zoo heev hauv txhua qhov piv rau titanium.
Cov khoom kub ntawm Zirconium
