Sometimes they have an iron core and concentric layers, surrounded by a silicate mantle and crust. Iron meteorites are mainly made of an iron-nickel alloy with a distinctive crystalline structure ...

Iron, the second most abundant metal in the Earth's crust after aluminum, is significantly more sustainable than nickel and ...

senior author Ju Li laid out a method for drawing away problematic helium atoms that could wreak havoc on the inner walls of the tokamak — by dispersing iron silicate into the bulk metal.