Patent ID: 6391254
Filing Date: 2002-05-21
Classification: C22C,H01J

Abstract:
An Feâ€”Crâ€”Ni alloy for electron gun electrodes comprising: 15 to 20% Cr; 9 to 15% Ni; 0.12% or less C; 0.005 to 1.0% Si; 0.005% to 2.5% Mn; 0.03% or less P; 0.0003 to 0.0100% S; 2.0% or less Mo; 0.001 to 0.2% Al; 0.003% or less O; 0.1% or less N; 0.1% or less Ti; 0.1% or less Nb; 0.1% or less V; 0.1% or less Zr; 0.05% or less Ca; 0.02% or less Mg; and the balance Fe and inevitable impurities by weight, and the alloy having a surface roughness satisfying the following formula when kurtosis in the rolling direction and kurtosis in the transverse direction to the rolling direction in surface roughness of the alloy are respectively defined as Kr0 and Kr90 Kr0&lE;4, Kr90&lE;4.