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本工作对于氚在不锈钢表面的吸附和解吸行为进行了初步研究。样品在n(D):n(T)=1:1,230℃时,15MPa下恒温8h后,接着在27MPa下恒温6h的情况下进行了氚的吸附,测量了室温下和加热到1173K时的解吸氚量和总吸附量。其结果如下:不锈钢的总吸附氚量是857.4MBq·cm~(-2),不锈钢的解吸氚量是722.2MBq·cm~(-2);在本实验的条件下,在室温和加热条件下,不锈钢所释放的氚中,化学成分主要是HTO和HT两部分,大部分以HT形式存在;不锈钢的自由氚占吸附总氚量的7.34%;不锈钢的热解吸谱存在三个解吸峰,其解吸温度分别为439、530和843K。
In this work, the adsorption and desorption behaviors of tritium on stainless steel were studied. Tritium adsorption was performed at a constant temperature of 15 MPa for 8 h at n (D): n (T) = 1: 1,230 ° C. and then at a constant temperature of 6 MPa for 6 h at 27 MPa. Desorption was measured at room temperature and at 1173 K Tritium volume and total adsorption capacity. The results are as follows: The total amount of adsorbed tritium in stainless steel is 857.4MBq · cm -2, the amount of desorbed tritium in stainless steel is 722.2MBq · cm -2. Under the conditions of this experiment, , The tritium released from stainless steel is mainly composed of two parts, HTO and HT, most of which are in the form of HT. The free tritium in stainless steel accounts for 7.34% of the total tritium absorbed. There are three desorption peaks in the thermal desorption spectrum of stainless steel, The desorption temperatures were 439, 530 and 843K, respectively.