The determination of oxygen content in steel by the fast neutron activation method was investigated.
The results are as follows.
(1) The characters of this method are the rappidity and non-destructivity in the determination of oxygen content in steel.
(2) The analytical values for the oxygen content between 0.1-0.001% by this method were in good agreement with those by the vaccum fusion method.
(3) The reproducibility of this method was about ±7% in the standard deviation.
(4) In the analysis of the oxygen content in molten steel, “the direct sampling method” was determined as the most reliable from the results of the test in which the values of sampling errors were compared between various sampling methods. It is neccesary that the oxide film formed on the sample surface is ground off before shaping it.
