Patent ID: 6172453
Filing Date: 2001-01-09
Classification: C04B,H01J

Abstract:
An electrode material for a discharge lamp, comprising:a first component of 0.5 to 1.5 mols selected from a group consisting of BaO, CaO and SrO;a second component of 0.05 mol to less than 0.3 mol or of more than 0.7 mol to 0.95 mol selected from a group consisting of ZrO.sub.2 and TiO.sub.2 ; anda third component of 0.025 to less than 0.3 mol selected from a group consisting of V.sub.2 O.sub.5, Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, Sc.sub.2 O.sub.3, Y.sub.2 O.sub.3, La.sub.2 O.sub.3, Dy.sub.2 O.sub.3 and Ho.sub.2 O.sub.3, or 0.05 to less than 0.15 mol or more than 0.35 to 0.95 mol selected from a group consisting of HfO.sub.2, CrO.sub.3, MoO.sub.3 and WO.sub.3.