スパーク放電の電極消耗量-4-アルゴン雰囲気中の鉄鋼の消耗量

概要

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Using electrodes made of various kinds of steels, the relations of the erosion rate of the electrodes to the spectral intensity and to the discharge conditions are examined with the low voltage spark discharge. The erosion rate of the cathode depends on the kinds of steels: it is 90μg/coulomb for stainless steel, 73μg/coulomb for tool steel and 70μg/coulomb for low alloy steel.For the same kind of steel, the erosion rates of the cathode linearly depends on the integrated discharge current ∫i dt, which is the results as obtained previously with pure materials. The spectral intensity depends mainly on the erosion rate of the element erupted out from the cathode.The relations between the spectral intensity and the dissipation rate of the elements from the cathode also depend on the kind of steels. Using the relation between the spectral intensities and the erosion rates, calibration curves are able to be drawn, and the spectrochemical analysis is possible only with one standard sample.
社団法人日本分光学会の論文