日本金属学会誌

J. Japan Inst. Metals, Vol. 28, No. 12 (1964),
pp. 804-808

Emission Spectrographic Determination of Oxygen in Steel by a D.C.Carbon-Arc Method

Hidehiro Goto1, Shigero Ikeda1, Kichinosuke Hirokawa1 and Mitsuyasu Suzuki1

1The Research Institute for Iron,Steel and Other Metals,Tohoku University, Sendai

Abstract:

The oxygen content of steel could be determined by means of a spectrographic method. A d. c. carbon-arc discharge was used to extract the oxygen as carbon nonoxide from the sample. The intensity ratio of O I 7771.9 Å/Ar I 8006.2 Å was a function of the argon pressure in the excitation chamber, current value and the oxygen content. The oxygen concentration in the range from 0.008 to 0.1 weight percent could be determined from a variant coefficient of 7∼12 percent.


(Received 1964/6/30)

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