Lub cev muaj zog ntawm Tantalum

Chemical cim Ta, steel grey hlau, belongs rau VB pab pawg neeg nyob rau hauv lub periodic rooj, atomic tooj 73, atomic hnyav 180.9479, lub cev-centered cubic siv lead ua, ntau valence yog ntxiv rau 5. Lub hardness ntawm tantalum yog kuj tsawg thiab muaj feem xyuam rau cov pa. cov ntsiab lus. Rau cov ntshiab ntshiab tantalum, Vickers hardness nyob rau hauv lub xeev annealed tsuas yog 140HV. Nws cov ntsiab lus melting yog siab li 2995 degree, qeb thib tsib ntawm cov ntsiab lus tom qab carbon, tungsten, rhenium thiab osmium. Tantalum yog ductile thiab tuaj yeem kos rau hauv filaments los ua nyias foils. Nws thermal expansion coefficient yog me me. Nws tsuas yog swells los ntawm 6.6 labths ntawm ib degree ib degree Celsius. Tsis tas li ntawd, nws qhov toughness yog qhov muaj zog heev, txawm tias zoo dua li tooj liab.