溶液法によるチタンおよびジルコニウム基合金中の鉄，ニッケルおよび銅のケイ光X線分析

Abstract

A simple, rapid, and accurate method is described for the determination of iron, nickel, and copper in samples which contain some refractory matals. Samples are dissolved in a nitric and hydrofluoric acid mixture, and saturated boric acid solution is added to the solution to mask the excess of hydrofluoric acid. Iron, nickel, and copper are determined directly in the final sample solution by X-ray fluorescence analysis. The effect of the element of interest was negligible below 2 normal. The interelement effects of iron, nickel, and copper, however, were considerably large, so that a correction had to be considered for the diverse element. This proposed method is so rapid that it took only about 10 minutes for the analysis of one sample. The relative errors of analytical results were below 3 per cent. This method, moreover, may have a broad applicability in the analysis of refractory metals in alloy steels and other alloys.