The effect of composition on Cr2+/Cr3+ in silicate melts

Abstract

Chromium K-edge X-ray absorption near-edge structure (XANES) spectra were recorded at room temperature for 27 CaO-MgO- Al2O3-SiO2 (CMAS) glass compositions quenched from melts equilibrated at various oxygen fugacities (fo2 ) at 1400 °C. Values of Cr2+/�