Lanthanated tungsten o se oxidized lanthanum doped tungsten alloy, faavasegaina o oxidized tungsten eleele seasea (W-REO).Pe a faʻaopoopoina le lanthanum oxide faʻasalalau, faʻaalia e le tungsten lanthanated le faʻaleleia o le vevela, faʻafefeteina, faʻafefete, ma le maualuga o le vevela.