Cov khoom
| Niobium | |
| Theem ntawm STP | khov kho |
| Qhov kub yaj | 2750 K (2477 °C, 4491 °F) |
| Kub taw tes | 5017 K (4744 °C, 8571 °F) |
| Qhov Ceev (nyob ze rt) | 8.57 g/cm3 |
| Kub ntawm kev sib xyaw | 30 kJ/mol |
| Kub ntawm kev ua pa | 689.9 kJ/mol |
| Lub peev xwm cua sov Molar | 24.60 J/(mol·K) |
| Qhov tsos | grey metallic, xiav thaum oxidized |
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Niobium Hmoov
Hmoov Niobium (CAS No. 7440-03-1) yog xim grey daj nrog lub ntsiab lus melting siab thiab tiv thaiv xeb. Nws yuav siv xim xiav thaum raug cua ntawm chav sov rau lub sijhawm ntev. Niobium yog ib qho hlau tsis tshua muaj, mos, malleable, ductile, grey-dawb. Nws muaj lub cev-centered cubic crystalline qauv thiab hauv nws lub cev thiab tshuaj lom neeg nws zoo li tantalum. Cov hlau oxidation hauv huab cua pib ntawm 200 ° C. Niobium, thaum siv rau hauv alloying, txhim kho lub zog. Nws cov khoom superconductive raug txhim kho thaum ua ke nrog zirconium. Niobium micron hmoov pom nws tus kheej hauv ntau yam kev siv xws li electronics, alloy-ua, thiab kev kho mob vim nws cov tshuaj lom neeg, hluav taws xob, thiab cov khoom siv kho tshuab.