METHOD FOR QUANTIFICATION ANALYSIS OF IRON OXIDES ON STEEL SURFACE USING GLOW DISCHARGE OPTICAL EMISSION SPECTROMETRY WITH MULTIVARIATE ANALYSIS

摘要

The first step of obtaining two or more steel samples, the quantitative analysis of the surface iron oxide of each steel sample to obtain a learning label; A second step of obtaining the learning data by measuring the concentration profile of Fe element in the depth direction from the surface of the base material including the surface oxide layer for each of the steel samples; A third step of establishing a predictive model formula showing a correlation between the surface iron oxide content of the steel sample and the Fe element concentration profile using multivariate analysis based on the learning label and the learning data; And a fourth step of measuring the Fe element concentration profile in the depth direction from the surface of the steel to be measured and substituting the measured Fe element concentration profile into the prediction model formula to calculate the predicted value of the surface iron oxide amount. It provides a method for quantitative analysis of iron oxide on the surface of steel.