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本文应用美国Leco TC-136氧、氮分析仪,法用Ni浴(制成Ni囊)进行了锆合金(zr-2、Zr-4)中氧、氮同时测定法的研究,得到了满意的结果。一仪器及其原理 TC-136氧、氮分析仪采用脉冲加热,试样置于石墨坩埚中,在惰性气氛(He)中熔融。试样中的氢、氧和氮分别以H_2、CO和N_2形式提取,提取气体随同氦气流通过400℃的稀土氧化铜,使H_2氧化成H_2O,CO氧化成CO_2。混合气流进入红外线吸牧室,测得CO_2量,然后再通过钠石棉和无水高氯酸镁吸收管以除去H_2O和CO_2,氦气流(此时只含有N_2)再流经热导池,测得N_2量后排空。红外线吸收室和热导池所测得的参数电讯号经过微处理机数学处理,直接以氧和氮的百分含量表示。
In this paper, the simultaneous determination of oxygen and nitrogen in zirconium alloy (zr-2, Zr-4) was studied by the Leco TC-136 oxygen and nitrogen analyzer in the United States and the Ni bath made by Ni method. result. An instrument and its principle TC-136 oxygen and nitrogen analyzer using pulse heating, the sample is placed in a graphite crucible, in an inert atmosphere (He) in the melt. Hydrogen, oxygen and nitrogen in the sample were extracted in the form of H 2, CO and N 2, respectively. The extracted gas was passed through a rare earth copper oxide with a flow of helium at 400 ° C to oxidize H 2 to H 2 O and CO to CO 2. Mixed gas flow into the infrared grazing room, the measured amount of CO_2, and then through sodium asbestos and anhydrous magnesium perchlorate absorption tube to remove H_2O and CO_2, helium flow (at this time only contains N_2) and then flow through the thermal conductivity cell After N_2 volume was emptied. Infrared absorption chamber and the thermal conductivity of the measured parameters of the signal through the microprocessor mathematical signal processing, directly to the percentage of oxygen and nitrogen expressed.