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- W2020056503 abstract "In the accurate elemental analysis of ceramic powders by X-ray fluorescence spectrometry with few or no available standards, the glass bead technique combined with the fundamental parameter (FP) method has been found to be suitable. As an example of ceramic powder analysis, we determined the amounts of Y2O3, BaO, and CuO contained in a superconductor YBa2Cu3O7-δ with this combined method.The results were as follows:(1) Satisfactory glass beads with near-infinite thickness to both incident and fluorescent X-rays were found to be prepared from 10 g of Na2B4O7, 1 g of YBa2Cu3O7-δ, and 0.20 g of KI.(2) Absorption enhancement effects for YKα, BaKα, and CuKα as below were taken into account in the analysis. YKα is more absorbed by substituting Y2O3 in the mixed reagents (Y2O3-BaO-CuO) with either BaO or CuO. BaKα is enhanced or a little more absorbed depending on the substitution of BaO in the mixed reagents with CuO or Y2O3. CuKα is more absorbed or a little enhanced depending on the substitution of CuO in the mixed reagents with BaO or Y2O3.(3) The amounts of Y2O3, BaO, and CuO in the superconductor were determined with the good accuracies (σd's) of 0.11, 0.18, and 0.19wt%, respectively by this combined method." @default.
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- W2020056503 date "1990-01-01" @default.
- W2020056503 modified "2023-09-23" @default.
- W2020056503 title "X-ray fluorescence analysis of superconductor YBa2Cu3O7-.DELTA. by glass bead - FP method." @default.
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- W2020056503 doi "https://doi.org/10.2355/isijinternational.30.786" @default.
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