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钛及钛合金中微量钇的测定,一般采用化学法,但该法流程冗长、试剂用量大、工作量也大。若采用光谱法则能克服上述缺点。本文对光谱测定条件如:载体及载体量、电流强度、电极形状,曝光时间等进行了试验。结果表明,用选定方法,对三种钛及钛合金中加50微克钇标准(以溶液形式加入基体中)的试样进行试验,测定8次的回收率为:TC4合金80—108%,TA_2纯钛80—108%,TF_1回收率80—90%;与化学法结果对照尚为满意。另外,用含50微克钇的试样,分三块板摄取31条谱,求得相对标准偏差为:
Determination of trace amounts of yttrium in titanium and titanium alloys, the general use of chemical methods, but the process lengthy, reagent dosage, workload is also large. If the use of spectral law can overcome the above shortcomings. In this paper, spectrometry conditions such as: carrier and carrier volume, current intensity, electrode shape, exposure time were tested. The results show that with the selected method, three kinds of titanium and titanium alloy plus 50 micrograms of yttrium standard (as a solution added to the matrix) of the sample was tested, the recovery rate was determined eight times: TC4 alloy 80-108% TA_2 80-108% pure titanium, TF_1 recovery 80-90%; compared with the results of the chemical method is still satisfactory. In addition, with 50 micrograms of yttrium samples, divided into 31 plates in three plates, the relative standard deviation was found to be: