Determination of hydrogen in titanium alloys by glow discharge spectroscopy
In this paper,a method for the determination of hydrogen in titanium alloys by glow discharge spectrometer was established.The effects of denudation time,power,pressure and integration time on the measurement results were mainly investigated.The speed of the grinding and polishing machine was controlled at 300r·min-1,and the test samples were processed by grinding with 400 mesh sandpaper and polished with 800 mesh sandpaper.Under the best test conditions,the ablation time was 50s,the power was 65W,the pressure was 850Pa,the integration time was 30s,and the working curve was drawn with a certified reference material,and the linear correlation coefficient of the working curve was r ≥ 0.995.The precision and accuracy experiments were carried out using the reference material,and the RSD(n=7)of the hydrogen measurement value was less than 10.0％,and the extended uncertainty of the reference material was satisfied,and the comparison between the inert gas fusion-infrared method and the present method was subsequently carried out,and the results were consistent.The results show that the method has good precision and high accuracy.
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