摘要
用热电动势法快速测定了铁基合金中硅含量．当冷热端温度差△ｔ＝ｔ１－ｔ０＝２４０℃且铜为参比电极时，热电动势Ｅｔ与待测电极的高炉生铁和硅钢铁基合金中硅含量［％Ｓｉ］关系式为：Ｅｔ＝１０．６９５—０．９７４［％Ｓｉ］生铁和Ｅｔ＝９．５５０—０．３２３［％ＳＩ］硅钢．与化学法相比，其测试精度为±（０．０３％～０．０５％）Ｓｉ．测试一次时间约７ｓ．
Quick thermo-emf method was applied to the determination of Si content in Fe-base alloys. Relationships between the tbermo-emf E, and st content [%Si] are optained as fllows when the temperature difference between cola and hot ends is a constant,i. e. 24o c and the reference electrode is made of on with theelectrodes to be measured made of pig iron and silicon steel respectively:El = 10. 695 - 0. 974[%Si]pland El=9. 550-0. 323[%Si]STCompared with chemical analysis,the determination will provide on accuracy of 1 0. 03% ￣0' 05 K St at a rateabout 7 seconds for each sample.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
1995年第4期372-375,共4页
Journal of Northeastern University(Natural Science)
关键词
热电动势法
铁基合金
硅
炼铁
thermo-emf
iron-bese alloy
silicon content
