Application of X-ray Fluorescence Spectroscopy Analysis Technology in the Detection of Small-sized High-temperature Alloys
X-ray fluorescence spectroscopy was used to determine 13 elements including P,Si,Mn,Cr,Ni,Mo,Cu,Fe,Co,Al,Nb,Ti,and W in small-sized high-temperature alloy samples.When analyzing elements with low excitation intensity such as P,Si,Ti,and Al,adjusting the measurement power of the corresponding channel of the instrument to 30 mA/120 kV(3.6 kW)can effectively improve the accuracy of the measurement.Measure low alloy steel,stainless steel,high-temperature alloy standard materials and quality control samples in a ø6 mm sample cup,establish calibration curves,and use basic parameter method combined with empirical coefficient method to eliminate spectral line interference between elements.At the same time,for welding wire samples with a diameter of not less than 1.5 mm,a hydraulic press can be used to press them into thin sheets with a diameter greater than ø8 mm and a thickness of 0.5 mm,and the surface can be polished flat on a grinding machine for measurement.The accuracy and precision of the measurement meet the quality control requirements.The use of this method not only solves the analysis problem of small-sized samples,greatly improves detection efficiency,but also provides an important detection method for in-situ statistical distribution analysis of small-sized samples.
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