Y_2O_3 内標準 X 線回折法による鋼中析出物の簡易定量法(析出物分析)(<特集>分析評価・解析)

概要

論文の詳細を見る
The simply quantitative state analysis method of precipitates in steels has been established by X-ray diffraction technique with adding constant amount of Y_2O_3 as internal standard material. The procedure is as follows : (1) The residues extracted from steels by potentiostatic electrolysis are dispersed in methanol with 100 ml beaker. (2) 5.0 ml of Y_2O_3 dispersing solution (50 mg/250 ml methanol) is added in above mentioned solution and after that this solution is dispersed by ultrasonic vibration. (3) This solution is filtrated and the residues are collected on filter. (4) The X-ray diffraction pattern of residues is measured and its peak intensity ratios of precipitates to Y_2O_3 are calculated. The amount of precipitates are determined from these peak intensity ratios by calibration curves, which are preliminaly made from relation between peak intensity ratio and the amount of precipitates. This method can simply estimate state of precipitates quantitatively compared with conventional extracted residues decomposition method.
社団法人日本鉄鋼協会の論文
1991-11-01