Kabar Buruk untuk China: Unsur Tanah Jarang Tidaklah Jarang
“The heavy rare earth elements are added as sort of a spice, a doping agent, to maintain the magnetism of the magnet at high temperatures. It also improves corrosion resistance and the longevity of the magnet,” says Seaver Wang, direktur tim iklim dan energi di Breakthrough Institute, sebuah think tank berbasis di Oakland. Beyond magnets, … Baca Selengkapnya