Nuclear fusion reactor’s ‘first wall’ gets ‘sun-proof’ boost with ultra-resistant alloys

German researchers at the Karlsruhe Institute of Technology developed ultra-resistant alloys to protect fusion reactors' "first walls" - the innermost surfaces that directly face superheated plasma hotter than the sun. These advanced materials, including specialized steels and tungsten alloys, could significantly extend reactor lifespans and make commercial fusion power economically viable.