Tantalum (Tantalum) yog ib hom hlau uas muaj tus lej atomic ntawm 73, ib qho
Lub cim tshuaj lom neeg Ta, lub ntsiab lus yaj ntawm 2996 ° C, lub ntsiab lus kub ntawm 5425 ° C,
thiab qhov ceev ntawm 16.6 g / cm³. Lub ntsiab lus sib raug rau lub ntsiab lus yog
hlau grey hlau, uas muaj kev tiv thaiv corrosion siab heev. Nws tsis
tsis txhob cuam tshuam rau hydrochloric acid, concentrated nitric acid thiab aqua regia txawm tias muaj teeb meem dab tsi los xij
nyob rau hauv qhov txias lossis kub.
Tantalum feem ntau muaj nyob rau hauv tantalite thiab nyob ua ke nrog niobium. Tantalum yog
nruab nrab tawv thiab ductile, thiab tuaj yeem rub mus rau hauv cov filaments nyias kom ua
cov ntawv ci nyias nyias. Nws cov coefficient ntawm thermal expansion yog me me. Tantalum muaj heev
cov tshuaj lom neeg zoo thiab tiv taus xeb heev. Nws tuaj yeem ua tau
siv los ua cov hlab dej evaporation, thiab lwm yam, thiab kuj siv tau ua electrodes,
rectifiers, thiab electrolytic capacitors ntawm electron tubes. Kho mob, nws yog siv los
ua cov ntawv nyias nyias lossis xov los kho cov ntaub so ntswg puas. Txawm hais tias tantalum yog
Nws cov khoom siv yog resistant rau corrosion, yog li nws yog ib qho tseem ceeb heev rau kev tsim cov khoom siv.
ntawm ib daim zaj duab xis tiv thaiv ruaj khov ntawm tantalum pentoxide (Ta2O5) rau ntawm qhov chaw.
Lub sijhawm tshaj tawm: Lub Ib Hlis-06-2023