Sb distribution in the phases of SiO2 saturated Sb-Fe-O-SiO2-CaO system was determined for first time through hightemperature experiment and quenching techniques, followed by Electron probe X-ray microanalysis (EPMA) air (Ptot = 1 atm, PO2 0.21 atm). The were quantified temperature range 900?C-1200?C effects Fe/SiO2 (mass fraction) CaO/SiO2 on Sb2O3 content investigated at 1200?C. results indic...

A characterization study of chromite ore from South Africa was conducted using bulk assays, X-ray diffraction, optical, scanning electron microscopy (SEM), automated probe microanalysis (EPMA) and quantitative evaluation mineral by (QEMSCAN) mineralogical techniques, EPMA. The aim to identify all major gangue impurities, the degree liberation, possible beneficiation options. material assayed 40...

Abstract

Introduction The U.S. Geological Survey (USGS) has been producing reference materials since the 1950s [1]. Over 50 materials have been developed to cover bulk rock, sediment, and soils for the geological community. These materials are used globally in geochemistry, environmental, and analytical laboratories that perform bulk chemistry and/or microanalysis for instrument calibration and quality ...

The corrosion behaviors of Mg-2Zn-0.2Mn-xCa (denoted as MZM-xCa alloys) in homogenization state have been investigated by immersion test and electrochemical techniques in a simulated physiological condition. The microstructure features were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and electron probe microanalysis (EP...

EPMA has been applied to electron beam evaporated and r.f. sputtered layers of about 200 tig/cm. This includes analysis of trapped argon and oxygen ranging from 0.2 to 10 wt%. For primary electron energies of 5 to 15 keV depth range of X-ray emission may be predicted with an accuracy of ± 10 nm. Errors of quantitative analysis are discussed for various correction models and should not exceed 3....