Quantitative Analysis of FeMo Alloys by X-Ray Fluorescence Spectrometry

Sung-Mo Jung

Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, Korea.

DOI: 10.4236/ajac.2014.512085                

Abstract

A quantitative analysis method of molybdenum in FeMo alloys by X-ray spectrometry using borate fusion technique was compared with that with pressed pellet. The complete pre-oxidation of FeMo alloys for the preparation of homogeneous fused discs was achieved by employing an automated fusion machine equipped with specially designed O₂-blowing nozzles, which used lithium tetra-borate as flux with the addition of lithium nitrate (LiNO₃) as oxidizer. The calibration curves of Mo and Fe were used in the quantitative analysis of standard materials and unknown plant samples with satisfactory accuracy and precision, utilizing the corrections of the matrix effects and line overlap. It was confirmed that the newly proposed method of preparing fused glass discs of FeMo alloys can replace the conventional wet chemical analyses requiring the labor intensive and time consuming procedure.

Keywords

FeMo Alloys, X-Ray Fluorescence Spectrometry, Borate Fusion, Pre-Oxidation, Calibration Standard, Quantification

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Bhadeshia, H.K.D.H. (2010) Nanostructured Bainite. Proceedings of the Royal Society A, 466, 3-18. http://dx.doi.org/10.1098/rspa.2009.0407
[2]	Fan, D.W., Kim, H.S. and De Cooman, B.C. (2009) A Review of the Physical Metallurgy Related to the Hot Press Forming of Advanced High Strength Steel. Steel Research International, 80, 241-248.
[3]	ASM International Handbook Committee (1990) Metals Handbook. Vol. 1, 10th Edition, ASM International, Materials Park, 126-137,140-159.
[4]	JIS (1982) Methods for Chemical Analysis of Ferromolybdenum (JISG 1317). Tokyo, 704-705.
[5]	Automated Fusion Technology Inc. (2001) A Handbook of Fusion Methods. Bayswater, 1-12.
[6]	Buhrke, V.E., Jenkins, R. and Smith, D.K. (1998) A Practical Guide for the Preparation of Specimens for X-Ray Fluorescence and X-Ray Diffraction Analysis. John Wiley & Sons, New York, 41-44.
[7]	Jenkins, R., Gould, R.W. and Gedcke, D. (1995) Quantitative X-Ray Spectrometry. Marcel Dekker, New York, 372-387.
[8]	Claisse, F. and Samson, C. (1962) Heterogeneity Effects in X-Ray Analysis. Springer, 335-354.
[9]	Hunter, C.B. and Rhodes, J.R. (1972) Particle Size Effects in X-Ray Emission Analysis: Formulae for Continuous Size Distributions. X-Ray Spec, 1, 107-111.
[10]	Kamitsos, E.I. Patsis, A.P., Karakassides, M.A. and Chryssikos, G.D. (1990) Infrared Reflectance Spectra of Lithium Borate Glasses. Journal of Non-Crystalline Solids, 126, 52-67. http://dx.doi.org/10.1016/0022-3093(90)91023-K
[11]	Verhoef, A.H. and den Hartog, H.W. (1995) Infrared Spectroscopy of Network and Cation Dynamics in Binary and Mixed Alkali Borate Glasses. Journal of Non-Crystalline Solids, 182, 221-234. http://dx.doi.org/10.1016/0022-3093(94)00555-9
[12]	Jung, S.-M., Sohn, I. and Min, D.-J. (2010) Chemical Analysis of Argon-Oxygen Decarburization Slags in Stainless Steelmaking Process by X-Ray Fluorescence Spectrometry. X-Ray Spec, 39, 311-317.