Hom phaj nyaj, ua ntej sab hauv 1923, lustrous, silvery-gray txoj kev hloov hlau tsis tshua pom muaj dawb nyob rau hauv xwm. Nws yog tus tom ntej-rau-kawg caij uas ruaj khov nuclei yuav muab ntxiv rau lub sij hawm. Cas nws tau txais nws lub npe? Hafnium los ntawm lo lus Latin lo lus rau Copenhagen, uas yog hafnia.
Hafnium Applications
Hnub no hafnium siv nyob rau ntau daim ntaub ntawv, nrog rau qhov uas ua super alloys, As Well as electronics, ceramics, teeb ci ntsa iab, Thiab txawm nyob hauv lub hwj huam nuclear fais fab kev lag luam. Piv txwv, hafnium siv los tswj rods rau nuclear reactors. Tam sim no nyob rau hauv cov minerals zirconium minerals, hafnium yog ua tau tshuaj zoo ib yam li zirconium. Thaum zirconium yog refined, hafnium yog ib tug byproduct uas yuav siv tau rau ntau lub hom phiaj.
Ib qho abundant Industrial hlau
Puas hafnium rank nyob saum toj kawg nkaus 50 abundant hais txog lub ntiaj teb? Muaj. Nws tawm nyob rau ntawm tus xov tooj 45. Thiab vim li cas tib neeg siv nws? Zoo, Nws yog resistant rau corrosion, thiab unaffected los ntawm dej, Cua thiab tag nrho alkalis thiab acids tsuas yog rau hydrogen fluoride, Li ntawd, nws muaj cov khoom zoo.
Lub siab Melting taw tes ntawm ob-element Compounds
Thaum nws tawm los paub ob-lub caij compounds, hafnium carbide muaj lub siab melting taw tes ntawm tej lawv! Xav kwv yees tus melting taw tes? Yog hais tias koj hais nyob ib ncig ntawm 7,000 degrees Fahrenheit, Koj yog lawm. Hom hafnium compounds muaj xws li hafnium dioxide, hafnium hydroxide, thiab hafnium boride.
Yog hais tias koj xav saib hafnium rau lub sij hawm, Tus cim yog Hf thiab nws yog nyob rau hauv pab pawg neeg IVB. Tus atomic naj npawb yog 72. Thiab cov atomic luj yog 178.49.
Uas lub teb chaws ua tus hafnium hnub no? Uas yuav Fabkis, teb chaws USA, Zog ntawm Guj kuj thiab Ukraine.
Thaum muab cia rau tom khw, hafnium yuav tsum tau nyob rau hauv ib lub txias, qhov chaw ventilated, txhob cia hluav taws kub thiab/los yog cua sov. Tej compounds ntawm hafnium yog toxic thiab yuav ua rau muaj teeb meem. Yog li ntawd, Tuav tej chaw uas yuav tsum paub tseeb tias lawv muaj ventilation zoo ventilation thiab uas plua plav raug tshem tawm ntawm tej huab cua.
Eagle Alloys muaj hafnium nyob rau ntau hom ntaub ntawv; xyuas peb cov nplooj ntawv hafnium, No:
