摘要
制得多晶La_(0.95)Ca_(0.05)F_(2.95)固体电解质管,以纯La作为参比电极,组成La传感器电池形式为:Mo|La(1)of(s)|La_(0.95)Ca_(0.05)F_(2.95)|[La]Fe|Mo金属陶瓷。于1573K测定了碳饱和铁液中不同La浓度下熔解态La的活度,与同时用氧传感器测得的氧的变化规律相符合追踪测定了1623K碳饱和铁液凝固过程中溶解态La活度随温度的变化,结果呈现规律性La传感探头在降温和升温过程中可连续使用。
The La sensor was composed of polycrystalline La0.95Ca0.05Fz.gs as solid electrolyte, pure La as reference electrode and Mo wire as lead wire. It can be expressed as:Mo|La(1)or (s) |La0.95 Ca0.05F2.95|[La]Fe Mo ceramal. The activity of dissolve La in C-saturated melted iron (1300℃) with different La concentration was detennined. The result was in agreement with that of O2 concentration cell e.m.f determined by O2 probe. The activity change of La with temperature in the solidified process (from 1350℃) was also determined and shows regularity. With the temperature changing from 1350℃ to 600℃, the activity of La varied from 10 ̄(-4) to 10 ̄(-20)
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第9期B394-B398,共5页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
传感器
活度
碳饱和铁
凝固
镧
sensor, activity, La, carbon saturated melted iron