With JACO 3.4m ebert-type spectrograph, the limit of emission spectrographic determination of residual elements (Al, B, Co, Cr, Cu, Mo, Nb, Ni, Pb, Sn, Ta, Ti, V, W, Zr) in iron and steel by point-to-plane technique is studied.
The excitation is by either a high voltage a-c arc or a spark source depending on the concerned element.For preparing the calibration curve, linear scale graph paper is used instead of log-log or semi-log graph paper.This method is found more accurate and reliable than the conventional: the above elements except Ta were determined with errors of less than 10% when the concentration was higher than 0.001%.
抄録全体を表示