Calibrating the linearity between grayscale and element content for X-ray KES imaging of alloys  

作　　者：Xiao-Lu Ju Biao Deng Ke Li Fu-Cheng Yu Hai-Peng Zhang Ming-Wei Xu Guo-Hao Du Hong-Lan Xie Bin Li Ti-Qiao Xiao 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2022年第1期1-12,共12页核技术（英文）

基　　金：supported by the National Key Research and Development Program of China(Nos.2017YFA0403801,2017YFA0206004,2018YFC1200204);the National Natural Science Foundation of China(NSFC)(Nos.81430087,11775297,U1932205).

摘　　要：Doped elements in alloys significantly impact their performance.Conventional methods usually sputter the surface material of the sample,or their performance is limited to the surface of alloys owing to their poor penetration ability.The X-ray K-edge subtraction(KES)method exhibits great potential for the nondestructive in situ detection of element contents in alloys.However,the signal of doped elements usually deteriorates because of the strong absorption of the principal component and scattering of crystal grains.This in turn prevents the extensive application of X-ray KES imaging to alloys.In this study,methods were developed to calibrate the linearity between the grayscale of the KES image and element content.The methods were aimed at the sensitive analysis of elements in alloys.Furthermore,experiments with phantoms and alloys demonstrated that,after elaborate calibration,X-ray KES imaging is capable of nondestructive and sensitive analysis of doped elements in alloys.

关 键 词：X-ray KES imaging Grayscale calibration Element analysis for alloy Nondestructive imaging of elements 

分 类 号：TG115.22[金属学及工艺—物理冶金] O434.19[金属学及工艺—金属学] TP391.41[机械工程—光学工程]