Molybdenum News Center

Study on Determination of Molybdenum in High Impurity Ferromolybdenum Alloy by EDX

The energy dispersive x-ray spectroscopy(EDX) was applied to the analysis of ferromolybdenum alloy with higher impurities contents.The determined values for Mo and impurities like P,S,V,Ni and so on were compared with the analysis results obtained with x-ray fluorescence spectroscopy(XRF). The powder sample of the ferromolybdenum alloy was pressed into thinner disc using the(hydraulic) universal testing machine,and the disc sample's morphology is observed with scanning electron microscope(SEM).The results shows that the analysis results of element Mo and Si in(molybdenum) alloy are satisfied while the analysis results of element P,S,Cu are less satisfied.

Energy-dispersive X-ray spectroscopy (EDS, EDX, or XEDS), sometimes called energy dispersive X-ray analysis (EDXA) or energy dispersive X-ray microanalysis (EDXMA), is an analytical technique used for the elemental analysis or chemical characterization of a sample. It relies on an interaction of some source of X-ray excitation and a sample. Its characterization capabilities are due in large part to the fundamental principle that each element has a unique atomic structure allowing unique set of peaks on its X-ray emission spectrum. To stimulate the emission of characteristic X-rays from a specimen, a high-energy beam of charged particles such as electrons or protons (see PIXE), or a beam of X-rays, is focused into the sample being studied. At rest, an atom within the sample contains ground state (or unexcited) electrons in discrete energy levels or electron shells bound to the nucleus. The incident beam may excite an electron in an inner shell, ejecting it from the shell while creating an electron hole where the electron was. An electron from an outer, higher-energy shell then fills the hole, and the difference in energy between the higher-energy shell and the lower energy shell may be released in the form of an X-ray. The number and energy of the X-rays emitted from a specimen can be measured by an energy-dispersive spectrometer. As the energies of the X-rays are characteristic of the difference in energy between the two shells and of the atomic structure of the emitting element, EDS allows the elemental composition of the specimen to be measured.

 

More molybdenum product: http://www.molybdenum.com.cn
Tel: 0592-5129696 Fax：0592-5129797
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Price: http://www.chinatungsten.com

• < Prev
• Next >