Hafnium

Hafnium is a lustrous, silvery, ductile metal generally similar to zirconium. Good corrosion resistance and high strength. E tetee atu i pala ona o le fausiaina o se faigata, le mafai ona ofi i totonu ata tifaga oxide. The metal is unaffected by alkalis and acids, vagana hydrofluoric acid. Hafnium e faigata ona tuueseese fomu zirconium, aua o elemene e lua o loʻo i ai atoms e tutusa le tele. O Hafnium ma ona alloys o loʻo faʻaaogaina mo tootoo faʻatonutonu i meaola faʻanatinati ma vaʻalele nukila aua o le hafnium e sili ona lelei i le faʻaosoina o neutrons ma e maualuga lona faʻaliʻotoʻaga ma e faʻaleagaina. E faʻaaogaina ile alloys ma le keramika e maualuga le vevela o le vevela, talu ai o nisi o ona tuʻufaʻatasiga e matua faʻaola tele: latou te le liusuavai vagana lalo o le sili atu vevela vevela.

Hafnium (faailoga atomika: Hf, numera atomika: 72) o se Block D, Vaega 4, Vaitaimi 6 elemene ma se mamafa atomika o 178.49. The number of electrons in each of Hafnium’s shells is 2, 8, 18, 32, 10, 2 ma o lona seti eletise e [Xe] 4f14 5d2 6s2. The hafnium atom has a radius of 159 pm ma se radius Van der Waals o 212 pm. Hafnium was predicted by Dmitri Mendeleev in 1869 but it was not until 1922 that it was first isolated Dirk Coster and George de Hevesy.

I lona tulaga elemene, hafnium has a lustrous silvery-gray appearance. Hafnium does not exist as a free element in nature. It is found in zirconium compounds such as zircon. Hafnium is often a component of superalloys and circuits used in semiconductor device fabrication. Its name is derived from the Latin word Hafnia, meaning Copenhagen, where it was discovered. Luga o faʻamatalaga e mo naʻo faʻamatalaga faʻamatalaga. Eagle Alloys e le noatia mo le saʻo o nei mea poʻo tusi talosaga. Faʻauma ata tusia mafai ona lafo atu i le lona tolu pati mo outsource.