けい光 X 線による鋼板の表面分析について

概要

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A quantitative analysis of sticking materials on steel sheet surface was made possible by fluorescent X-ray according to a following method. 1. Preparation of standard samples : A known quantity of standard solution of element to be analyzed was placed on steel sheet in area where X-ray irradiated and then dried. The quantity of the placed element divided by the area was called "sticking density". 2. Drawing of calibration curves : Differences of X-ray counting rates after and before placing standard solution were plotted against sticking densities and calibration curves were drawn. 3. Precisions and lower limits of determination : For example, standard deviation was 0.0148μg/cm^2 for Na at 0.566μg/cm^2 and 0.0048μg/cm^2 for Cl at 0.252μg/cm^2. Lower limit was 0.121μg/cm^2 for Na and 0.038μg/cm^2 for Cl. Conclusively, determination of sticking soil-materials on steel sheet surface which caused to rust initiation and films produced by chemical treatments were made possible without establishment of a chemical analysis method.
社団法人日本鉄鋼協会の論文
1977-06-01