
Rigaku's NEX CG is a Cartesian geometry energy dispersive X-ray fluorescence Spectrometer (EDXRF) for rapid qualitative and quantitative elemental analysis – with minimal standards and trace level sensitivity.
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Industrial large-scale metal alloy production houses have a crucial need for immediate analytical results. These applications include both failure analysis for production issues and general quality/process control. The need for fast, accurate, and precise analyses for industrial metallic applications is met with the Rigaku Simultix, a simultaneous wavelength-dispersive X-ray fluorescence (WDXRF) spectrometer. The total analysis time for the high-temperature alloy application below was less than one minute due to the speed-minded geometry in the dedicated analysis channels on a simultaneous WDXRF spectrometer.
The standards listed in Table 1 were used to generate a quantitative calibration method, based on Rigaku's Fundamental Parameters, to analyze a high temperature alloy metallic product.
High-temperature alloys: NBS(NIST) | 1184, 1185, 1187, 1189 |
High-temperature alloys: NBS(NIST) | 1207-1, 1207-2, 1208-1, 1208-2 |
High-temperature alloys: JAERI | R2, R5, R6, R7 |
High-temperature alloys: Stainless steels: JSS | JSS650-11, JSS651-11, JSS652-11, JSS653-11, JSS654-11, JSS655-11 |
High-temperature alloys: Stainless steels: NBS(NIST) | D845, D846, D847, D848, D849, D850 |
High-temperature alloys: Austenite stainless steel: BAS | BAS61, BAS62, BAS63, BAS64, BAS65, BAS66, BAS67, BAS68 |
(σ d mass%) |
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The analytical precision has also been calculated based upon a 10 run repeatability routine, and displayed in Table 3 for all 15 elements.
(mass %) | deviation (σ d Mass%) | variance (C.V. %) | |
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In summation, the high degree of accuracy (down to 200 ppm) and the stability demonstrated in the precision statistics (not greater than 1.6 % C.V. except in extreme traces like Ta) efficiently demonstrates the superior ability to get a fast (under 1 minute total analysis time), reliable high-temperature metal alloy analysis on a simultaneous WDXRF spectrometer like the Rigaku Simultix, through a fundamental parameters-based quantitative calibration routine.